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)
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
Typical Application Circuit
V
DD1
R
L
BD71L4L-1
C
IN
C
L
(
Capacitor for
noise filtering)
V
DD2
Microcontroller
RST
GND
○Product
structure：Silicon monolithic integrated circuit
.
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© 2016 ROHM Co., Ltd. All rights reserved.
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○This
product has no designed protection against radioactive rays
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BD71L4L-1 series
Connection Diagram
SSOP5
N.C.
N.C.
HVSOF5
GND VDD
4
5
AR
Marking
Marking
OUT VDD GND
TOP VIEW
Lot. No
1 2 3
OUT SUB VDD
TOP VIEW
Lot. No
Pin Descriptions
SSOP5
PIN No.
1
2
3
4
5
Symbol
OUT
VDD
GND
N.C.
N.C.
Function
Output pin
Power Supply Voltage
GND
No connection pin
No connection pin
PIN No.
1
2
3
4
5
be wired together.
L1
HVSOF5
Symbol
OUT
SUB *
VDD *
VDD *
GND
Function
Output pin
Substrate
Power Supply Voltage
Power Supply Voltage
GND
N.C. pin is electrically open and can be connected to either VDD
or GND.
* The SUB pin (pin no. 2) and VDD pins (pin no. 3 and 4) must
Ordering Information
B
Part
Number
D
x
x
x
Output logic
L : Active
Low
x
x
x
-
1
T
R
Function
71 : Over Voltage
Detector
Detection Voltage Value Package
4L : 4.05V
G : SSOP5
HFV : HVSOF5
Packaging and
forming specification
Embossed tape and reel
TR : The pin number 1 is the upper right
: SSOP5
: HVSOF5
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BD71L4L-1 series
Absolute Maximum Ratings
Parameter
Power Supply Voltage
Output Voltage N-Channel Open Drain Output
Output Current
*1*3
SSOP5
Power
*2*3
Dissipation
HVSOF5
Operating Temperature
Ambient Storage Temperature
Symbol
V
DD
-GND
V
OUT
I
O
Pd
Topr
Tstg
Limits
-0.3 to +7
GND-0.3 to +7
70
0.54
0.53
-40 to +85
-55 to +125
Unit
V
V
mA
W
°C
°C
*1 Reduced by 0.0054W/°C when used over 25°C.
*2 Reduced by 0.0053W/°C when used over 25°C.
*3 When mounted on ROHM standard circuit board (70mm×70mm×1.6mm, glass epoxy board).
Caution:
Operating the IC over the absolute maximum ratings may damage the IC. The damage can either be a short circuit between pins or an open circuit between
pins and the internal circuitry. Therefore, it is important to consider circuit protection measures, such as adding a fuse, in case the IC is operated over the absolute
maximum ratings.
Electrical Characteristics (Unless Otherwise Specified, Ta=0°C to 60°C, V
DD
=1.2V to 6.0V)
Parameter
Detection Voltage
Hysteresis Voltage
Output Delay Time “L→H”
Output Delay Time “H→L”
Supply Current 1
Supply Current 2
Operating Voltage Range
‘Low’ Output Voltage(Nch)
Output Leak Current
Symbol
V
DET
Δ
V
DET
Conditions
R
L
=470kΩ
V
DD
=L→H
Ta=25°C
Ta =0°C to 60°C
V
DD
=L→H→L, R
L
=470kΩ
*4
R
L
=100kΩ, C
L
=100pF
V
OUT
＝GND→50%
*5
R
L
=100kΩ, C
L
=100pF
V
OUT
＝V
DD
→50%
V
DD
= V
DET
+ 0.2V
V
DD
= V
DET
- 0.2V
V
OUT
≧0.8V,
R
L
=470kΩ
V
DD
= V
DET
+0.2 V, I
SINK
=4.0mA
V
DD
=V
DS
=3.8V
Min
4.034
4.018
-
-
-
-
-
1.20
-
-
Limit
Typ
4.05
-
30
-
-
0.60
0.70
-
-
-
Max
4.066
4.083
40
100
100
2.40
2.80
-
0.3
1.0
Unit
V
mV
µs
µs
µA
µA
V
V
uA
t
PLH
t
PHL
I
DD1
I
DD2
V
OPL
V
OL
I
LEAK
V
DET
：Standard
Detection Voltage（4.05V）
R
L
：Pull-up
Resistor between VOUT and VDD.
C
L
：Capacitor
to be connected between VOUT and GND.
Design Guarantee. (Outgoing inspection is not done on all products.)
*4 t
PLH
：V
DD
＝（V
DET
typ. + 0.5V） to
（V
DET
typ.- 0.5V）
*5 t
PHL
：V
DD
＝（V
DET
typ - 0.5V） to
（V
DET
typ.+ 0.5V）
Block Diagram
VDD
VOUT
Vref
GND
Figure 1. BD71L4L-1
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TSZ02201-0R7R0G300030-1-2
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BD71L4L-1 series
Typical Performance Curves
5.0
【BD71L4L-1】
【BD71L4LG-1】
Detection Voltage : V
DET
[V]
Circuit Current : I
DD
[µA]
1.0
0.9
0.8
0.7
0.6
0.5
0.4
0.3
Ta=25°C
Ta=0°C
Ta=60°C
【BD71L4L-1】
4.0
3.0
2.0
1.0
0.0
0
1
2
3
4
5
6
7
Supply Voltage : V
DD
[V]
Figure 2. Detection Voltage
Ta=60°C
Ta=25°C
Ta=0°C
0.2
0.1
0.0
0
1
2
3
4
5
6
7
Supply Voltage : V
DD
[V]
Figure 3. Circuit Current
110
100
90
80
70
60
50
40
30
20
10
0
0
1.0
【BD71L4L-1】
Operating Voltage Range :V
OPL
[V]
【BD71L4L-1】
Low Output Voltage : V
OL
[mV]
0.8
0.6
0.4
0.2
0.0
Ta=0°C
Ta=25°C
Ta=60°C
Ta=60°C
Ta=25°C
Ta=0°C
5
10
Isink[mA]
15
20
0.2
0.3
0.4
0.5
0.6
0.7
0.8
Supply Voltage:V
DD
[V]
Figure 5. Operating Voltage Range
Figure 4. Low Output Voltage
V
DD
=4.0V
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TSZ02201-0R7R0G300030-1-2
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BD71L4L-1 series
Typical Performance Curves
–
continued
4.20
Operating Voltage Range : V
OPL
[V]
Detection Voltage : V
DET
[V]
1.0
【BD71L4L-1】
High to Low (VDET)
4.15
0.9
0.8
0.7
0.6
0.5
0.4
0.3
0.2
0.1
【BD71L4L-1】
4.10
4.05
4.00
3.95
3.90
3.85
3.80
0
10
Low to High (VDET-ΔVDET)
0.0
20
30
40
50
60
0
10
20
30
40
50
60
Temperature : Ta[°C]
Figure 6. Detection Voltage vs. Temperature
3.0
Temperature : Ta[°C]
Figure 7. Operating Voltage Range vs. Temperature
1.0
Circuit Current when Off : I
DD
[µA]
【BD71L4L-1】
Circuit Current when On : I
DD
[µA]
1.0
0.9
0.8
0.7
0.6
0.5
0.4
0.3
0.2
0.1
0.0
0
10
20
30
40
50
60
0
10
20
30
40
50
60
Temperature : Ta[°C]
Figure 9. Supply Current when On vs. Temperature
V
DD
=V
DET
+0.2V
V
DD
=4.25V
【BD71L4L-1】
0.9
0.8
0.7
0.6
0.5
0.4
0.3
0.2
0.1
0.0
Temperature : Ta[°C]
Figure 8. Supply Current when Off vs. Temperature
V
DD
=V
DET
-0.2V
V
DD
=
3.85V
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© 2016 ROHM Co., Ltd. All rights reserved.
TSZ22111・15・001
5/14
TSZ02201-0R7R0G300030-1-2
08.Jun.2016.Rev.005
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