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BD71L4L 데이터시트 PDF




ROHM Semiconductor에서 제조한 전자 부품 BD71L4L은 전자 산업 및 응용 분야에서
광범위하게 사용되는 반도체 소자입니다.


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부품번호 BD71L4L 기능
기능 CMOS Over Voltage Detector IC
제조업체 ROHM Semiconductor
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BD71L4L 데이터시트, 핀배열, 회로
Datasheet
Voltage Detector IC Series
CMOS
Over Voltage Detector IC
BD71L4L-1 series
General Descriptions
ROHM’s BD71L4L-1 series is highly accurate and low
current Over Voltage Detector IC. It is an N-Channel
Open-Drain output type with detection voltage of 4.05V
and hysteresis voltage of 30mV. It is most suitable for
monitoring the charge of a lithium-ion battery.
Key Specifications
Detection Voltage:
High Accuracy Detection Voltage:
Ultra-Low Current Consumption:
Operating Temperature Range:
4.05V (Typ.)
±0.8%
0.8μA (Typ.)
-40°C to +85°C
Features
High Accuracy Detection Voltage
Low Current Consumption
N-Channel Open Drain Output
Wide Operating Temperature Range
Very Small and Low Height Package
Package SSOP5 is similar to SOT-23-5 (JEDEC)
Typical Application Circuit
VDD1
BD71L4L-1
CIN
VDD2
RL
Microcontroller
RST
CL
(Capacitor for
noise filtering)
GND
Package
SSOP5:
HVSOF5:
W(typ) x D(typ) x H(max)
2.90mm x 2.80mm x 1.25mm
1.60mm x 1.60mm x 0.60mm
Applications
All electronics equipment with lithium-ion battery
All electronics equipment that needs over-voltage
protection
Product structureSilicon monolithic integrated circuit
.www.rohm.com
© 2016 ROHM Co., Ltd. All rights reserved.
TSZ2211114001
This product has no designed protection against radioactive rays
1/14
TSZ02201-0R7R0G300030-1-2
08.Jun.2016.Rev.005




BD71L4L pdf, 반도체, 판매, 대치품
BD71L4L-1 series
Typical Performance Curves
5.0
BD71L4LG-1-1
4.0
3.0
2.0 Ta=60°C
Ta=25°C
1.0 Ta=0°C
0.0
0
123456
Supply Voltage : VDD[V]
Figure 2. Detection Voltage
7
1.0
0.9
0.8
0.7
0.6
0.5
0.4
0.3
0.2
0.1
0.0
0
BD71L4L-1
Ta=60°C
Ta=0°C
Ta=25°C
123456
Supply Voltage : VDD[V]
Figure 3. Circuit Current
7
110
100
90
80
70
60
50
40
30
20
10
0
0
BD71L4L-1
Ta=60°C
Ta=25°C
Ta=0°C
5 10 15
Isink[mA]
Figure 4. Low Output Voltage
VDD=4.0V
20
1.0
BD71L4L-1
0.8 Ta=0°C
Ta=25°C
0.6 Ta=60°C
0.4
0.2
0.0
0.2
0.3 0.4 0.5 0.6 0.7
Supply Voltage:VDD[V]
Figure 5. Operating Voltage Range
0.8
www.rohm.com
© 2016 ROHM Co., Ltd. All rights reserved.
TSZ2211115001
4/14
TSZ02201-0R7R0G300030-1-2
08.Jun.2016.Rev.005

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BD71L4L 전자부품, 판매, 대치품
BD71L4L-1 series
Application Information
1. Explanation of Operation
The detection and release voltages are used as threshold voltages. When the voltage applied to VDD pin reaches
the appropriate threshold voltage, OUT pin voltage switches from either “High” to “Low” or from “Low” to “High”.
Please refer to the Timing Waveform and Electrical Characteristics for information on hysteresis.
Because the BD71L4L-1 uses an open drain output type, it is necessary to connect a pull-up resistor to VDD or
another power supply if needed [The output “High” voltage (VOUT) in this case becomes VDD or the voltage of the
other power supply].
VDD
R1 RL
Vref
R2
VOUT
Q1
R3
GND
Figure 14. Internal Block Diagram
2. Timing Waveform
Example: the following shows the relationship between the input voltage (VDD) and the output voltage (VOUT) when
the input power supply voltage (VDD) swept up and down (the circuit is shown in Figure 14).
VDD
VDET
VDET -ΔVDET
VOPL
0V
VOUT
VOH
VOL
tPLH
tPHL
tPLH
tPHL
Figure 15. Timing Waveform
1 When the power supply is turned on, the output is unstable from
after over the operating limit voltage (VOPL) until tPLH. Therefore it is
possible that the reset signal is not outputted when the rise time of
VDD is faster than tPLH.
2 When VDD is greater than VOPL but less than the reset
detection voltage (VDET), the output voltage will switch to High.
3 If VDD exceeds the reset detection voltage (VDET) when the
power supply is powered up, VOUT switches from H to L (with a
delay of tPHL).
4 If VDD drops below the release voltage (VDET - VDET) when the
power supply is powered down, VOUT switches to H (with a delay of
tPLH).
5 The potential difference between the detection voltage and the
release voltage is known as the hysteresis width (∆VDET).
www.rohm.com
© 2016 ROHM Co., Ltd. All rights reserved.
TSZ2211115001
7/14
TSZ02201-0R7R0G300030-1-2
08.Jun.2016.Rev.005

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