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  • 北京元坤伟业科技有限公司

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产品型号BL8095CB6TR的Datasheet PDF文件预览

BL8095  
24V/1.2A Asynchronous Buck Converter in SOT23-6  
FEATURES  
DESCRIPTION  
Adjustable Output Voltage, Vfb=0.810V  
Output current is up to 1.2A  
The BL8095 is a high efficiency current-mode  
asynchronous, 24V/1.2A buck converter. Its input  
voltage ranges from 4V to 24V and it provides an  
adjustable regulated output voltage from 0.810V  
to 5.5V while delivering up to 1.2A of output  
current.  
Range of operation input voltage: 4-24V  
Input voltage UVLO: 3.7V (voltage decreasing)  
Input Overvoltage Protection @26V  
Withstand input voltage spike >30V  
Operating current at zero load: 0.8mA (typ.)  
Line regulation: 0.1%/V (typ.)  
Load regulation: 10mV (typ.)  
High efficiency, up to 90%  
Environment Temperature: -20C~85C  
The switching frequency is set to 1.4MHz, which  
works with a inductor as small as 4.7uH. And the  
BL8095 will automatically switch between PFM  
and PWM mode based on the load current, thus  
to enhance the converter efficiency at light load.  
APPLICATIONS  
BL8095 consists of many protection blocks such  
as UVLO, input voltage over voltage protection to  
stand much higher input voltage spike, thermal  
protection and output short circuit protection.  
Security Camera  
Consumer Electronic Device for automobile  
Portable DVD  
ADSL Modem, WLAN router  
Other 12V or double cell Li-ion battery  
powered device  
The BL8095 is available in the tiny SOT23-6  
package.  
TYPICAL APPLICATION and PIN OUT  
LOW CURRENT CONSUMPTION  
BST  
1
VIN 12V  
10nF  
VOUT  
5V/1.2A  
VIN  
4.7μH  
5
4
6
3
SW  
LC2325  
BL8095  
EN  
82K  
16K  
6.3V  
22μF  
25V  
10μF  
FB  
GND  
2
SW VIN  
EN  
4
6
5
YW: Date code,  
Year and Week  
being assembled  
YW  
CA  
1
2
3
BST  
FB  
GND  
SOT23-6  
www.belling.com.cn  
1
BL8095  
MARK and ORDERING INFORMATION  
SW VIN  
EN  
4
Mark Explanation  
Ordering Information  
6
5
Product ID  
BL8095CB6TR  
3000  
YW  
CA  
CA: Product Code  
YW: Date code  
1
2
3
Devices per reel  
BST  
FB  
GND  
PINOUT DESCRIPTION  
PIN # NAME  
DESCRIPTION  
1
2
3
BST  
GND  
FB  
High side power transistor gate drive boost input  
Ground.  
Feedback input with reference voltage set to 0.810V  
Enable input. Setting it to high level or connecting to Vin via a resistor may turn on the chip,  
while setting it to ground level will turn off the chip.  
4
EN  
5
6
VIN  
SW  
Power input, the input capacitor should be placed as close to VIN and GND pin as possible  
Power switching node to connect inductor  
BLOCK DIAGRAM  
EN  
BST  
VIN  
+
UVLO &  
Thermal  
shutdown  
Current  
Sense  
REG  
&REF  
-
+
-
EA  
+
-
FB  
PWM  
Logic  
Σ
COMP  
network  
SW  
DRIVER  
OSC  
Slope Comp  
GND  
www.belling.com.cn  
2
BL8095  
ABSOLUTE MAXIMUM RATING  
Parameter  
Max Input Voltage  
Value  
30V  
Max Operating Junction Temperature(Tj)  
Ambient Temperature(Ta)  
125C  
-20C 85C  
110C / W  
220C / W  
-40C - 150C  
260C, 10S  
>2000V  
SOT23-6 (JC)  
SOT23-6 (JA)  
Package Thermal Resistance  
Storage Temperature(Ts)  
Lead Temperature & Time  
ESD (HBM)  
Note: Exceed these limits to damage to the device. Exposure to absolute maximum rating conditions may affect  
device reliability.  
RECOMMENDED WORK CONDITIONS  
Parameter  
Value  
4V - 24V  
0.81 5.5V  
Input Voltage Range  
Output Voltage Range  
Operating Junction Temperature(Tj)  
-20C 125C  
ELECTRICAL CHARACTERISTICS  
(VIN=12V, TA=25C)  
Symbol  
Parameter  
Conditions  
Min  
Typ  
Max  
Unit  
VDD  
Input Voltage Range  
4
24  
V
VOUT  
Vref  
VUVLO  
Ifb  
Output Voltage Range  
Feedback Voltage  
0.81  
5.5  
V
V
Vin=12V, Ven=5V  
0.790  
0.810  
3.7  
0.1  
0.6  
6
0.830  
UVLO Voltage  
Vin H-->L, Iout=0.5A  
V
Feedback Leakage current  
0.4  
1.0  
10  
uA  
mA  
uA  
%/V  
%/A  
MHz  
mohm  
A
Active, Vfb=1V, No Switching  
Shutdown, Vin=8V  
Vin=5V to 12V  
Iq  
Quiescent Current  
LnReg  
LdReg  
Fsoc  
Line Regulation  
0.1  
0.02  
1.4  
250  
2
Load Regulation  
Iout=0.1 to 1.2A  
Switching Frequency  
High side Switch Rdson  
Peak Inductor Current Limit  
EN High Threshold  
Ven=3V, Vin=12V  
Isw=200mA  
1.0  
1.8  
RdsonH  
Ilimit  
Venh  
Venl  
350  
Vin=12V, Vout=5V  
1.5  
1
1.5  
3
V
EN Low Threshold  
0.5  
V
Vovp  
TSD  
Input Over-Voltage Protection  
Over Temperature Proection  
Ven=3V  
26  
V
150  
Hystersis=40C  
C  
www.belling.com.cn  
3
BL8095  
TYPICAL PERFORMANCE CHARACTERISTICS  
(Vin=12V, Vout=5.0V, L=4.7uH, Cin=10uF, Cout=22uF, TA=25C, unless otherwise stated)  
Switching waveform Vin=12V, Iout=0.5A  
Switching waveform Vin=12V, Iout=1A  
(CH1=Vin, CH2=Vout, CH3=SW, CH4=Isw)  
(CH1=Vin, CH2=Vout, CH3=SW, CH4=Isw)  
www.belling.com.cn  
4
BL8095  
Switching waveform Vin=24V, Iout=0.5A  
Switching waveform Vin=24V, Iout=1A  
(CH1=Vin, CH2=Vout, CH3=SW, CH4=Isw)  
(CH1=Vin, CH2=Vout, CH3=SW, CH4=Isw)  
Load Transient Response  
Load Transient Response  
Vin=24V, Iout=0.12 - 1A  
Vin=12V, Iout=0.12 - 1A  
(CH1=Vin, CH2=Vout, CH4=Isw)  
(CH1=Vin, CH2=Vout, CH4=Isw)  
FUNCTIONAL DECRIPTIONS  
Loop Operation  
The BL8095 is a wide input range, high-efficiency, DC-to-DC step-down switching regulator, capable of delivering up to  
1.2A of output current, integrated with a 250mMOSFET, with external schottky diode. It uses a PWM current-mode  
control scheme. An error amplifier integrates error between the FB signal and the internal reference voltage. The output  
of the integrator is then compared to the sum of a current-sense signal and the slope compensation ramp. This  
operation generates a PWM signal that modulates the duty cycle of the power MOSFETs to achieve regulation for output  
voltage.  
Current Limit  
There is a cycle-by-cycle current limit on the high-side MOSFET of 1.5A(typ). When the current flowing out of SW  
exceeds this limit, the high-side MOSFET turns off and the external schottky diode rectifier turns on. Unlike the  
traditional method of current limiting by limiting the voltage at the internal compensation node, which usually has large  
variation due to duty cycle variance, this type of peak current limiting scheme provides a relatively more accurate limit  
for output current, thereby lowering the requirements for system design.  
Light Load Operation  
Traditionally, a fixed current mode constant frequency PWM DC-DC regulator always switches even when the output  
load is small. When energy is shuffling back and forth through the power MOSFETs, power is lost due to the finite  
www.belling.com.cn  
5
BL8095  
RDSONs of the MOSFETs and parasitic capacitances. At light load, this loss is prominent and efficiency is therefore very  
low. BL8095 employs a proprietary control scheme that improves efficiency in this situation by enabling the device into a  
power save mode during light load, thereby extending the range of high efficiency operation.  
COMPONENT SELECTRION  
When setting up the BL8095 for different output voltage, please use following recommended component value for the  
best performance.  
VOUT (V)  
5
3.3  
COUT (F)  
L (H)  
6.8 - 10  
4.7 - 10  
3.3 - 10  
22  
22  
22  
2.5  
THERMAL CONSIDERATION  
BL8095 is high efficiency Buck converter, which means it consumes very few power when converting the high voltage to  
low voltage. However, when output power is very large, like 5V/1.2A, the output power is as high as 6W, a heat  
dissipation path is strongly recommended to be routed on PCB. BL8095 is in SOT23-6 package. The heat is conducted out  
via Pin 2 (GND), so the heat dissipation route on PCB should be connected to the Pin 2 of the chip.  
PACKAGE OUTLINE  
Package  
SOT23-6  
Devices per reel  
3000  
Unit  
mm  
Package specification  
www.belling.com.cn  
6
配单直通车
BL80N075产品参数
型号:BL80N075
生命周期:Active
Reach Compliance Code:unknown
Base Number Matches:1
类别:Diodes
配置:Single
Channel Polarity:N
ESD:N
Max PD(W):125
Min PD(W):75
Max VGS (V):±25
Max ID(A):80
Max IGSS(uA):±0.1
Max VGS(th) (V):4
RDS(on)(mΩ) @ 25℃ 10V Typ:/
RDS(on)(mΩ) @ 25℃ 10V Max:8
AEC Qualified:NO
最高工作温度:150
最低工作温度:-55
MSL等级:/
生命周期:Active
是否无铅:Yes
符合Reach:Yes
符合RoHS:Yes
ECCN代码:EAR99
Package Outlines:TO-220AB
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