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产品型号B340L的Datasheet PDF文件预览

MP1591  
2A, 32V, 330KHz  
Step-Down Converter  
The Future of Analog IC Technology  
DESCRIPTION  
FEATURES  
The MP1591 is a high voltage step-down  
converter ideal for automotive power adapter  
battery chargers. Its wide 6.5V to 32V input  
voltage range covers the automotive battery’s  
requirements and it achieves 2A continuous  
output for quick charge capability.  
Wide 6.5V to 32V Input Operating Range  
34V Absolute Maximum Input  
2A Output Current  
120mInternal Power MOSFET Switch  
Stable with Low ESR Output Ceramic  
Capacitors  
Up to 95% Efficiency  
20µA Shutdown Mode  
Fixed 330KHz Frequency  
Thermal Shutdown  
Cycle-by-Cycle Over Current Protection  
Output Adjustable From 1.23V to 21V  
Under Voltage Lockout  
Reference Voltage Output  
Available in 8-Pin SOIC Packages  
Current mode operation provides fast transient  
response and eases loop stabilization. Fault  
protection includes cycle-by-cycle current  
limiting and thermal shutdown. In shutdown  
mode, the converter draws only 20µA of supply  
current.  
The MP1591 requires a minimum number of  
readily available external components to  
complete a 2A step-down DC to DC converter  
solution.  
APPLICATIONS  
EVALUATION BOARD REFERENCE  
Automotive Power Adapters  
PDA and Cellular Phone Battery Chargers  
Distributed Power Systems  
Board Number  
Dimensions  
EV0020  
2.1”X x 1.4”Y x 0.5”Z  
Automotive Aftermarket Electronics  
“MPS” and “The Future of Analog IC Technology” are Registered Trademarks of  
Monolithic Power Systems, Inc.  
TYPICAL APPLICATION  
C2  
10nF  
Efficiency vs  
INPUT  
6.5V to 32V  
Load Current  
100  
V
=5V  
OUT  
90  
80  
70  
60  
50  
40  
30  
20  
2
1
V
=3.3V  
OUT  
IN  
BS  
OUTPUT  
2.5V  
2A  
7
8
3
EN  
SW  
OFF ON  
MP1591  
D1  
5
OPEN  
NOT USED  
REF  
GND  
FB  
COMP  
4
6
C4  
4.7nF  
C3  
V
=12V  
IN  
OPEN  
0
0.5  
1
1.5  
2
LOAD CURRENT (A)  
MP1591 Rev. 2.3  
9/27/2006  
www.MonolithicPower.com  
MPS Proprietary Information. Unauthorized Photocopy and Duplication Prohibited.  
© 2006 MPS. All Rights Reserved.  
1
MP1591 – 2A, 32V, 330KHz STEP-DOWN CONVERTER  
PACKAGE REFERENCE  
ABSOLUTE MAXIMUM RATINGS (1)  
IN Supply Voltage........................0.3V to +34V  
SW Voltage............................. –1V to VIN + 0.3V  
BS Voltage ....................VSW – 0.3V to VSW + 6V  
All Other Pins.................................0.3V to +6V  
Junction Temperature...............................150°C  
Lead Temperature....................................260°C  
Storage Temperature ..............–65°C to +150°C  
Recommended Operating Conditions (2)  
Input Voltage ................................... 6.5V to 32V  
Operating Temperature .............–40°C to +85°C  
TOP VIEW  
BS  
IN  
1
2
3
4
8
7
6
5
REF  
EN  
SW  
GND  
COMP  
FB  
EXPOSED PAD  
ON BACKSIDE  
(SOIC8N ONLY)  
CONNECT TO PIN 4  
Thermal Resistance (3)  
θJA  
θJC  
SOIC8 (w/ Exposed Pad) .......50...... 10... °C/W  
SOIC8.....................................90...... 45... °C/W  
Part Number*  
Package  
Temperature  
–40°C to +85°C  
–40°C to +85°C  
MP1591DN  
MP1591DS  
SOIC8E  
SOIC8  
Notes:  
1) Exceeding these ratings may damage the device.  
2) The device is not guaranteed to function outside of its  
operating conditions.  
For Tape & Reel, add suffix –Z (eg. MP1591DN–Z)  
For RoHS Compliant Packaging, add suffix –LF  
(eg. MP1591DN–LF–Z)  
*
3) Measured on approximately 1” square of 1 oz copper.  
ELECTRICAL CHARACTERISTICS  
VIN = 12V, TA = +25°C, unless otherwise noted.  
Parameter  
Symbol Condition  
Min  
Typ  
20  
Max  
35  
Units  
µA  
Shutdown Supply Current  
Supply Current  
VEN = 0V  
VEN = 5V, VFB = 1.4V  
6.5V VIN 32V, VCOMP < 2V  
1.0  
1.2  
mA  
V
Feedback Voltage  
1.202 1.230 1.258  
400  
Error Amplifier Voltage Gain  
Error Amplifier Transconductance  
High-Side Switch On Resistance (4)  
Low-Side Switch On Resistance (4)  
High-Side Switch Leakage Current  
Current Limit (5)  
V/V  
µA/V  
m  
500  
700  
120  
8.5  
0
1100  
IC = ±10µA  
VEN = 0V, VSW = 0V  
10  
µA  
2.5  
3.6  
4.9  
A
Current Sense to COMP  
Transconductance  
3.5  
A/V  
Oscillation Frequency  
280  
330  
35  
380  
KHz  
KHz  
%
Short Circuit Oscillation Frequency  
Maximum Duty Cycle (4)  
Minimum Duty Cycle (4)  
VFB = 0V  
VFB = 1.0V  
VFB = 1.5V  
90  
0
%
EN Shutdown Threshold Voltage  
Enable Pull-Up Current  
0.8  
2.4  
1.2  
1.8  
2.6  
250  
1.6  
V
VEN = 0V  
µA  
V
EN UVLO Threshold  
VEN Rising  
2.8  
EN UVLO Threshold Hysteresis  
mV  
MP1591 Rev. 2.3  
9/27/2006  
www.MonolithicPower.com  
MPS Proprietary Information. Unauthorized Photocopy and Duplication Prohibited.  
© 2006 MPS. All Rights Reserved.  
2
MP1591 – 2A, 32V, 330KHz STEP-DOWN CONVERTER  
ELECTRICAL CHARACTERISTICS (continued)  
VIN = 12V, TA = +25°C, unless otherwise noted.  
Parameter  
Symbol Condition  
Min  
Typ  
160  
5.0  
100  
30  
Max  
Units  
°C  
Thermal Shutdown (4)  
REF Voltage  
IREF = 0  
V
REF Load Regulation (4)  
REF Line Regulation (4)  
Notes:  
IREF = 0 to 1mA  
IREF = 100µA, VIN = 6.5 to 32V  
mV  
mV  
4) These parameters are guaranteed by design, not production tested.  
5) Equivalent output current = 1.5A 50% Duty Cycle  
2.0A 50% Duty Cycle  
Assumes ripple current = 30% of load current.  
Slope compensation changes current limit.  
PIN FUNCTIONS  
Pin # Name Description  
1
2
BS  
IN  
High-Side Gate Drive Boost Input. BS supplies the drive for the high-side N-Channel MOSFET  
switch. Connect a 10nF or greater capacitor from SW to BS to power the high-side switch.  
Power Input. IN supplies the power to the IC, as well as the step-down converter switches.  
Drive IN with a 6.5V to 32V power source. Bypass IN to GND with a suitably large capacitor to  
eliminate noise on the input to the IC. See Input Capacitor.  
3
SW  
Power Switching Output. SW is the switching node that supplies power to the output. Connect  
the output LC filter from SW to the output load. Note that a capacitor is required from SW to BS  
to power the high-side switch.  
4
5
GND Ground. For the MP1591DN, connect the Exposed Pad to pin 4.  
FB  
Feedback Input. FB senses the output voltage to regulate that voltage. Drive FB with a resistive  
voltage divider from the output voltage. The feedback threshold is 1.230V. See Setting the  
Output Voltage.  
6
COMP Compensation Node. COMP is used to compensate the regulation control loop. Connect a  
series RC network from COMP to GND to compensate the regulation control loop. In some  
cases, an additional capacitor from COMP to GND is required. See Compensation.  
7
8
EN  
Enable/UVLO. A voltage greater than 2.8V enables operation. For complete low current  
shutdown the EN pin voltage needs to be less than 800mV.  
REF Reference Output. REF is the 5V reference voltage output. It can supply up to 1mA to external  
circuitry. If used, bypass REF to GND with 10nF or greater capacitor. Leave REF unconnected  
if not used.  
MP1591 Rev. 2.3  
9/27/2006  
www.MonolithicPower.com  
MPS Proprietary Information. Unauthorized Photocopy and Duplication Prohibited.  
© 2006 MPS. All Rights Reserved.  
3
MP1591 – 2A, 32V, 330KHz STEP-DOWN CONVERTER  
OPERATION  
The MP1591 is a current mode step-down  
regulator. It regulates input voltages from 6.5V  
to 32V down to an output voltage as low as  
1.230V and is able to supply up to 2A of load  
current.  
The voltage at COMP is compared to the switch  
current measured internally to control the output  
voltage. The converter uses an internal  
N-Channel MOSFET switch to step-down the  
input voltage to the regulated output voltage.  
Since the MOSFET requires a gate voltage  
greater than the input voltage, a boost capacitor  
connected between SW and BS drives the gate.  
The capacitor is internally charged while SW is  
low. An internal 10switch from SW to GND is  
used to insure that SW is pulled to GND when  
the switch is off to fully charge the BS capacitor  
The MP1591 uses current-mode control to  
regulate the output voltage. The output voltage  
is measured at FB through a resistive voltage  
divider and amplified through the internal error  
amplifier. The output current of the  
transconductance error amplifier is presented at  
COMP where a network compensates the  
regulation control system.  
2
8
IN  
CURRENT  
SENSE  
AMPLIFIER  
5V  
INTERNAL  
REF  
REGULATORS  
+
--  
OSCILLATOR  
SLOPE  
COMP  
1
3
BS  
35/330KHz  
CLK  
M1  
M2  
+
--  
+
S
R
Q
Q
SW  
CURRENT  
COMPARATOR  
SHUTDOWN  
COMPARATOR  
--  
1.2V  
7
EN  
LOCKOUT  
COMPARATOR  
--  
+
1.8V  
2.60V/  
2.35V  
4
GND  
THERMAL  
PROTECTION  
ERROR  
AMPLIFIER  
+
--  
+
0.7V 1.230V  
--  
FREQUENCY  
FOLDBACK  
COMPARATOR  
5
6
FB  
COMP  
Figure 1—Functional Block Diagram  
MP1591 Rev. 2.3  
9/27/2006  
www.MonolithicPower.com  
MPS Proprietary Information. Unauthorized Photocopy and Duplication Prohibited.  
© 2006 MPS. All Rights Reserved.  
4
MP1591 – 2A, 32V, 330KHz STEP-DOWN CONVERTER  
APPLICATION INFORMATION  
The inductance value can be calculated by the  
equation:  
COMPONENT SELECTION  
Setting the Output Voltage  
The output voltage is set using a resistive  
voltage divider from the output voltage to FB.  
The voltage divider divides the output voltage  
down by the ratio:  
(VIN VOUT  
)
L1 = VOUT  
×
(VIN × f × ∆I)  
Where VIN is the input voltage, f is the switching  
frequency and I is the peak-to-peak inductor  
ripple current.  
R2  
VFB = VOUT  
×
(R1+ R2)  
Table 1 lists a number of suitable inductors  
from various manufacturers.  
Where VFB is the feedback voltage and VOUT is  
the output voltage.  
Table 1—Inductor Selection Guide  
Thus the output voltage is:  
Package  
Dimensions  
(R1+ R2)  
VOUT = 1.230 ×  
(mm)  
Vendor/  
Model  
Core  
Type  
Core  
Material  
R2  
W
L
H
A typical value for R2 can be as high as 100k,  
but 10kis recommended. Using that value, R1  
is determined by:  
Sumida  
CR75  
Open  
Open  
Ferrite  
Ferrite  
7.0 7.8 5.5  
7.3 8.0 5.2  
5.5 5.7 5.5  
5.5 5.7 5.5  
6.7 6.7 3.0  
CDH74  
R1 8.18 × (VOUT 1.230)  
CDRH5D28 Shielded Ferrite  
CDRH5D28 Shielded Ferrite  
CDRH6D28 Shielded Ferrite  
For example, for a 3.3V output voltage, R2 is  
10k, and R1 is 17k.  
Inductor (L1)  
CDRH104R Shielded Ferrite 10.1 10.0 3.0  
The inductor is required to supply constant  
current to the output load while being driven by  
the switched input voltage. A larger value  
inductor results in less ripple current that results  
in lower output ripple voltage. However, the  
larger value inductor has a larger physical size,  
higher series resistance, and/or lower  
saturation current. Choose an inductor that  
does not saturate under the worst-case load  
conditions. A good rule to use for determining  
the inductance is to allow the peak-to-peak  
ripple current in the inductor to be  
approximately 30% of the maximum load  
current that the IC can provide. Also, make sure  
that the peak inductor current (the load current  
plus half the peak-to-peak inductor ripple  
current) is below the 2.3A minimum current  
limit.  
Toko  
D53LC  
Type A  
Shielded Ferrite  
Shielded Ferrite  
5.0 5.0 3.0  
7.6 7.6 5.1  
D75C  
D104C  
Shielded Ferrite 10.0 10.0 4.3  
D10FL  
Open  
Ferrite  
9.7 1.5 4.0  
Coilcraft  
DO3308  
DO3316  
Open  
Open  
Ferrite  
Ferrite  
9.4 13.0 3.0  
9.4 13.0 5.1  
Input Capacitor (C1)  
The input current to the step-down converter is  
discontinuous, and so a capacitor is required to  
supply the AC current to the step-down  
converter while maintaining the DC input  
voltage. A low ESR capacitor is required to  
keep the noise at the IC to a minimum. Ceramic  
capacitors are preferred, but tantalum or low  
ESR electrolytic capacitors may also suffice.  
MP1591 Rev. 2.3  
9/27/2006  
www.MonolithicPower.com  
MPS Proprietary Information. Unauthorized Photocopy and Duplication Prohibited.  
© 2006 MPS. All Rights Reserved.  
5
MP1591 – 2A, 32V, 330KHz STEP-DOWN CONVERTER  
The input capacitor value should be greater  
than 10µF. The capacitor can be electrolytic,  
tantalum or ceramic. However, since it absorbs  
the input switching current it requires an  
adequate ripple current rating. Its RMS current  
rating should be greater than approximately 1/2  
of the DC load current.  
Output Rectifier Diode (D1)  
The output rectifier diode supplies the current to  
the inductor when the high-side switch is off. To  
reduce losses due to the diode forward voltage  
and recovery times, use a Schottky rectifier.  
Table 2 provides some recommended Schottky  
rectifiers based on the maximum input voltage  
and current rating.  
For insuring stable operation C1 should be  
placed as close to the IC as possible.  
Alternately, a smaller high quality ceramic  
0.1µF capacitor may be placed closer to the IC  
and a larger capacitor placed farther away. If  
using this technique, it is recommended that the  
larger capacitor be a tantalum or electrolytic  
type. All ceramic capacitors should be placed  
close to the MP1591.  
Table 2—Diode Selection Guide  
2A Load Current  
3A Load Current  
VIN  
(Max)  
Part  
Part  
Vendor  
Vendor  
Number  
Number  
30BQ15  
B220  
15V  
20V  
4
1
B320  
SK33  
1
1, 6  
3
SK23  
6
SR22  
6
SS32  
20BQ030  
B230  
4
B330  
1
Output Capacitor (C5)  
1
B340L  
MBRD330  
SK33  
1
The output capacitor is required to maintain the  
DC output voltage. Low ESR capacitors are  
preferred to keep the output voltage ripple low.  
The characteristics of the output capacitor also  
affect the stability of the regulation control  
system. Ceramic, tantalum or low ESR  
electrolytic capacitors are recommended. In the  
case of ceramic capacitors, the impedance at  
the switching frequency is dominated by the  
capacitance, and so the output voltage ripple is  
mostly independent of the ESR. The output  
voltage ripple is estimated to be:  
30V  
34V  
SK23  
6
4, 5  
1, 6  
2, 3  
1
SR23  
3, 6  
2, 3  
4
SS23  
SS33  
21DQ04  
MBRS240L  
SK24  
B340L  
MBRS340  
SK34  
5
4
6
1, 6  
2, 3  
SS24  
2, 3  
SS34  
Table 3 lists manufacturer’s websites.  
Table 3—Schottky Diode Manufacturers  
#
1
2
3
4
5
6
Vendor  
Web Site  
Diodes, Inc.  
www.diodes.com  
2
fLC  
VRIPPLE 1.4 × VIN  
×
Fairchild Semiconductor www.fairchildsemi.com  
General Semiconductor www.gensemi.com  
fSW  
Where VRIPPLE is the output ripple voltage, fLC is  
the resonant frequency of the LC filter, fSW is the  
switching frequency.  
International Rectifier  
On Semiconductor  
Pan Jit International  
www.irf.com  
www.onsemi.com  
www.panjit.com.tw  
In the case of tantalum or low-ESR electrolytic  
capacitors, the ESR dominates the impedance  
at the switching frequency, and so the output  
ripple is calculated as:  
Choose a rectifier whose maximum reverse  
voltage rating is greater than the maximum  
input voltage, and whose current rating is  
greater than the maximum load current.  
VRIPPLE ≅ ∆I× RESR  
Where VRIPPLE is the output voltage ripple and  
RESR is the equivalent series resistance of the  
output capacitors.  
MP1591 Rev. 2.3  
9/27/2006  
www.MonolithicPower.com  
MPS Proprietary Information. Unauthorized Photocopy and Duplication Prohibited.  
© 2006 MPS. All Rights Reserved.  
6
MP1591 – 2A, 32V, 330KHz STEP-DOWN CONVERTER  
Compensation  
The system crossover frequency fC, (the  
frequency where the loop gain drops to 1, or  
0dB) is important. A good rule of thumb is to set  
the crossover frequency to approximately one  
tenth of the switching frequency. In this case,  
the switching frequency is 330KHz, so use a  
crossover frequency of 33KHz. Lower  
crossover frequencies result in slower response  
and worse transient load recovery. Higher  
crossover frequencies can result in instability.  
The system stability is controlled through the  
COMP pin. COMP is the output of the internal  
transconductance error amplifier. A series  
capacitor-resistor combination sets a pole-zero  
combination to control the characteristics of the  
control system. The DC loop gain is:  
VREF  
AVDC  
=
× AVEA × GCS × RLOAD  
VOUT  
Where VREF is the feedback threshold voltage,  
1.230V, AVEA is the transconductance error  
amplifier voltage gain, 400 V/V, and GCS is the  
current sense gain (roughly the output current  
divided by the voltage at COMP), 3.5 A/V.  
Choosing the Compensation Components  
The values of the compensation components  
given in Table 4 yield a stable control loop for  
the output voltage and given capacitor.  
Table 4—Compensation Values for Typical  
Output Voltage/Capacitor Combinations  
The system has 2 poles of importance; one is  
due to the compensation capacitor (C4) and the  
other is due to the output capacitor (C5). These  
are:  
VOUT  
2.5V  
3.3V  
5V  
C5  
R3  
C3  
C4  
22µF Ceramic  
22µF Ceramic  
22µF Ceramic  
22µF Ceramic  
47µF SP-Cap  
47µF SP-Cap  
47µF SP-Cap  
47µF SP-Cap  
3.9k  
5.1kꢀ  
7.5kꢀ  
18kꢀ  
8.2kꢀ  
10kꢀ  
16kꢀ  
36kꢀ  
None  
None  
None  
None  
None  
None  
None  
None  
4.7nF  
3.9nF  
2.7nF  
1.2nF  
2.2nF  
2.2nF  
1.5nF  
1nF  
GMEA  
fP1  
=
(2π × AVEA × C4)  
12V  
2.5V  
3.3V  
5V  
Where fP1 is the first pole, and GMEA is the error  
amplifier transconductance (770µS) and  
1
fP2  
=
(2π × RLOAD × C5)  
12V  
The system has one zero of importance due to  
the compensation capacitor (C4) and the  
compensation resistor (R3) which is  
560µF/6.3V, AL  
30mESR  
2.5V  
3.3V  
5V  
100kꢀ  
120kꢀ  
150kꢀ  
180kꢀ  
150pF  
120pF  
82pF  
1nF  
1nF  
1nF  
1nF  
560µF/6.3V, AL  
30mESR  
1
fZ1  
=
470µF/10V, AL  
30mESR  
(2π × R3 × C4)  
220µF/25V, AL  
30mESR  
If large value capacitors with relatively high  
equivalent-series-resistance (ESR) are used,  
the zero due to the capacitance and ESR of the  
output capacitor can be compensated by a third  
pole set by R3 and C3  
12V  
33pF  
Note: “AL” = Electrolytic  
1
fP3  
=
(2π × R3 × C3)  
MP1591 Rev. 2.3  
9/27/2006  
www.MonolithicPower.com  
MPS Proprietary Information. Unauthorized Photocopy and Duplication Prohibited.  
© 2006 MPS. All Rights Reserved.  
7
MP1591 – 2A, 32V, 330KHz STEP-DOWN CONVERTER  
To optimize the compensation components that  
are not listed in Table 4, use the following  
procedure.  
Example:  
VOUT = 5V, C5 = 22µF Ceramic (ESR = 10m)  
R3 6.88x107 (22x10-6) (5) = 7568ꢀ  
Use the nearest standard value of 7.5k.  
C4 > 1.93x10-5 / 7.5K = 2.57nF  
Use standard value of 2.7nF.  
Choose the compensation resistor to set the  
desired crossover frequency. Determine the  
value by the following equation:  
2π × C5 × VOUT × fC  
R3 =  
GEA × GCS × VREF  
8π x C5 x RESR x fC = 0.22, which is less than 1.  
Therefore, no second compensation capacitor  
(C3) is required.  
Putting in the know constants and setting the  
crossover frequency to the desired 33KHz:  
R3 6.88 ×107 × C5 × VOUT  
External Bootstrap Diode  
It is recommended that an external bootstrap  
diode be added when the system has a 5V  
fixed input or the power supply generates a 5V  
output. This helps improve the efficiency of the  
regulator. The bootstrap diode can be a low  
cost one such as IN4148 or BAT54.  
Choose the compensation capacitor to set the  
zero below one fourth of the crossover  
frequency. Determine the value by the following  
equation:  
2
1.93 ×105  
C4 >  
5V  
π × R3 × fC  
R3  
Determine if the second compensation  
capacitor, C3, is required. It is required if the  
ESR zero of the output capacitor occurs at less  
than four times the crossover frequency, or  
1
BS  
10nF  
MP1591  
3
SW  
8π × C5 × RESR × fC 1  
Figure 2—External Bootstrap Diode  
If this is the case, then add the second  
compensation resistor. Determine the value by  
the equation:  
This diode is also recommended for high duty  
VOUT  
cycle operation (when  
>65%) and high  
VIN  
C5 × RESR(MAX)  
C3 =  
output voltage (VOUT>12V) applications.  
R3  
Where RESR(MAX) is the maximum ESR of the  
output capacitor.  
MP1591 Rev. 2.3  
9/27/2006  
www.MonolithicPower.com  
MPS Proprietary Information. Unauthorized Photocopy and Duplication Prohibited.  
© 2006 MPS. All Rights Reserved.  
8
MP1591 – 2A, 32V, 330KHz STEP-DOWN CONVERTER  
TYPICAL APPLICATION CIRCUITS  
C2  
10nF  
INPUT  
6.5V to 32V  
2
1
IN  
BS  
OUTPUT  
2.5V  
2A  
7
3
EN  
SW  
OFF ON  
MP1591  
D1  
8
5
OPEN  
REF  
FB  
NOT USED  
GND  
COMP  
4
6
C4  
4.7nF  
C3  
OPEN  
Figure 3—MP1591 with Murata 22µF / 10V Ceramic Output Capacitor  
C2  
10nF  
INPUT  
6.5V to 32V  
2
1
IN  
BS  
OUTPUT  
2.5V  
2A  
7
8
3
5
EN  
SW  
OFF ON  
MP1591  
D1  
OPEN  
NOT USED  
REF  
GND  
FB  
COMP  
4
6
C4  
2.2nF  
C3  
OPEN  
Figure 4—MP1591 with Panasonic 47µF / 6.3V Special Polymer Output Capacitor  
MP1591 Rev. 2.3  
9/27/2006  
www.MonolithicPower.com  
MPS Proprietary Information. Unauthorized Photocopy and Duplication Prohibited.  
© 2006 MPS. All Rights Reserved.  
9
MP1591 – 2A, 32V, 330KHz STEP-DOWN CONVERTER  
PACKAGE INFORMATION  
SOIC8  
0.189(4.80)  
0.197(5.00)  
0.050(1.27)  
0.024(0.61)  
0.063(1.60)  
8
5
0.150(3.80)  
0.157(4.00)  
0.228(5.80)  
0.244(6.20)  
0.213(5.40)  
PIN 1 ID  
1
4
TOP VIEW  
RECOMMENDED LAND PATTERN  
0.053(1.35)  
0.069(1.75)  
SEATING PLANE  
0.004(0.10)  
0.010(0.25)  
0.0075(0.19)  
0.0098(0.25)  
0.013(0.33)  
0.020(0.51)  
SEE DETAIL "A"  
0.050(1.27)  
BSC  
SIDE VIEW  
FRONT VIEW  
0.010(0.25)  
0.020(0.50)  
x 45o  
NOTE:  
1) CONTROL DIMENSION IS IN INCHES. DIMENSION IN  
BRACKET IS IN MILLIMETERS.  
GAUGE PLANE  
0.010(0.25) BSC  
2) PACKAGE LENGTH DOES NOT INCLUDE MOLD FLASH,  
PROTRUSIONS OR GATE BURRS.  
3) PACKAGE WIDTH DOES NOT INCLUDE INTERLEAD FLASH  
OR PROTRUSIONS.  
4) LEAD COPLANARITY (BOTTOM OF LEADS AFTER FORMING)  
SHALL BE 0.004" INCHES MAX.  
0.016(0.41)  
0.050(1.27)  
0o-8o  
5) DRAWING CONFORMS TO JEDEC MS-012, VARIATION AA.  
6) DRAWING IS NOT TO SCALE.  
DETAIL "A"  
MP1591 Rev. 2.3  
9/27/2006  
www.MonolithicPower.com  
MPS Proprietary Information. Unauthorized Photocopy and Duplication Prohibited.  
© 2006 MPS. All Rights Reserved.  
10  
MP1591 – 2A, 32V, 330KHz STEP-DOWN CONVERTER  
SOIC8E (WITH EXPOSED PAD)  
0.189(4.80)  
0.197(5.00)  
0.124(3.15)  
0.136(3.45)  
8
5
0.150(3.80)  
0.157(4.00)  
0.228(5.80)  
0.244(6.20)  
0.089(2.26)  
0.101(2.56)  
PIN 1 ID  
1
4
TOP VIEW  
BOTTOM VIEW  
SEE DETAIL "A"  
0.051(1.30)  
0.067(1.70)  
SEATING PLANE  
0.000(0.00)  
0.006(0.15)  
0.0075(0.19)  
0.0098(0.25)  
0.013(0.33)  
0.020(0.51)  
SIDE VIEW  
0.050(1.27)  
BSC  
FRONT VIEW  
0.010(0.25)  
0.020(0.50)  
x 45o  
GAUGE PLANE  
0.010(0.25) BSC  
0.050(1.27)  
0.024(0.61)  
0.063(1.60)  
0.016(0.41)  
0.050(1.27)  
0o-8o  
DETAIL "A"  
0.103(2.62)  
0.213(5.40)  
NOTE:  
1) CONTROL DIMENSION IS IN INCHES. DIMENSION IN  
BRACKET IS IN MILLIMETERS.  
2) PACKAGE LENGTH DOES NOT INCLUDE MOLD FLASH,  
PROTRUSIONS OR GATE BURRS.  
3) PACKAGE WIDTH DOES NOT INCLUDE INTERLEAD FLASH  
OR PROTRUSIONS.  
0.138(3.51)  
4) LEAD COPLANARITY (BOTTOM OF LEADS AFTER FORMING)  
SHALL BE 0.004" INCHES MAX.  
5) DRAWING CONFORMS TO JEDEC MS-012, VARIATION BA.  
6) DRAWING IS NOT TO SCALE.  
RECOMMENDED LAND PATTERN  
NOTICE: The information in this document is subject to change without notice. Users should warrant and guarantee that third  
party Intellectual Property rights are not infringed upon when integrating MPS products into any application. MPS will not  
assume any legal responsibility for any said applications.  
MP1591 Rev. 2.3  
9/27/2006  
www.MonolithicPower.com  
MPS Proprietary Information. Unauthorized Photocopy and Duplication Prohibited.  
© 2006 MPS. All Rights Reserved.  
11  
配单直通车
B340HA产品参数
型号:B340HA
是否Rohs认证: 符合
生命周期:Active
包装说明:PLASTIC, SMA, 2 PIN
针数:2
Reach Compliance Code:compliant
ECCN代码:EAR99
HTS代码:8541.10.00.80
风险等级:5.62
其他特性:FREE WHEELING DIODE
应用:GENERAL PURPOSE
配置:SINGLE
二极管元件材料:SILICON
二极管类型:RECTIFIER DIODE
JESD-30 代码:R-PDSO-C2
最大非重复峰值正向电流:80 A
元件数量:1
相数:1
端子数量:2
最高工作温度:150 °C
最低工作温度:-55 °C
最大输出电流:3 A
封装主体材料:PLASTIC/EPOXY
封装形状:RECTANGULAR
封装形式:SMALL OUTLINE
峰值回流温度(摄氏度):NOT SPECIFIED
认证状态:Not Qualified
最大重复峰值反向电压:40 V
表面贴装:YES
技术:SCHOTTKY
端子形式:C BEND
端子位置:DUAL
处于峰值回流温度下的最长时间:NOT SPECIFIED
Base Number Matches:1
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