BD4201FV
Regulators
Battery Backup IC
BD4201FV
BD4201FV is a battery backup IC. Switch that detect battery voltage and switch into back up power supply and
3-channel regulator are incorporated into a single chip.
Current consumption is 15µA (Max.). This IC is perfect for portable appliances.
Applications
Portable video, Digital camera
External dimensions
(Unit : mm)
3.0±0.2
8
5
Features
1) Low quiescent current
Normal operation < 15.0µA Max.
Backup mode < 2.1µA Max.
2) 3 high accurate voltage regulators
3) Low dropout voltage, and high accurate voltage
detectors (CS, RESET)
4) Control circuit; Backup
5) Special sequence;
For shifting to the backup mode. It need to make
main battery over +Vdet1 once.
6.4±0.3
4.4±0.2
1
4
0.15±0.1
0.1
1.15±0.1
0.1
0.22±0.1
0.65
(0.52)
SSOP-B8
Absolute maximum ratings
(Ta=25°C)
Parameter
Main power supply input Voltage
Back up power supply input Voltage
CS output Voltage
RESRT output Voltage
Power dissipation
Operating temperature
Storage temperature
+
+
Symbol
Vin
Vbat
Vcs
VRES
Pd
Topr
Tstg
Limits
15
15
15
15
350
∗
−30
to
+85
−40
to
+125
Unit
V
V
V
V
mW
C
C
∗
70mm 70mm 1.6mm Glass fiber basis subtract 3.5mW / C when over 25 C
Commendable operating status
(Ta=25°C)
Parameter
Power supply range
Backup power supply range
Load current range1
Load current range2
Load current range3
Symbol
Vin
Vbat
Iro
Iout
Ich
Min.
2.0
2.0
0
0
0
Typ.
-
-
-
-
-
Max.
15.0
15.0
20.0
60.0
20.0
Unit
V
V
mA
mA
mA
0.3Min.
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BD4201FV
Regulators
Electrical characteristics
(Unless otherwise specified Vin=6V, Ta=25°C)
Parameter
Symbol
lin1
lbat1
lbat2
Vro
Vdif1
Vlo1
Vli1
Vout
Vdif2
Vlo2
Vli2
Vch
Vdif3
Vlo3
Vli3
−Vdet1
+Vdet1
−Vdet2
+Vdet2
+Tdet2
Vopr
lcss
lcst
lres
lrel
Vsw1
Vsw2
IIek
Rsw
Min.
−
−
−
2.93
−
−
−
2.93
−
−
−
3.32
−
−
−
3.235
3.320
2.156
2.232
200
2.0
250
−
150
−
2.822
2.79
−
−
Typ.
10
0.0
1.5
3.00
0.1
30
50
3.00
0.25
30
60
3.30
0.1
30
50
3.300
3.400
2.200
2.312
300
−
500
−
300
−
2.89
2.85
−
30
−
−
0.1
−
0.1
2.958
2.91
1
60
Max.
15
0.5
2.1
3.07
0.35
100
100
3.07
0.35
110
110
3.38
0.35
110
110
3.365
3.480
2.244
2.391
Units
µA
µA
µA
V
V
mV
mV
V
V
mV
mV
V
V
mV
mV
V
V
V
V
µS
V
µA
µA
µA
µA
V
V
µA
Ω
Vin or Vbat
Vcs=0.5V, Vin=Vbat=2.0V
Vcs=15V, Vin=15V
Vreset=0.5V, Vin=Vbat=2.0V
Vreset=15V, Vin=15V
Vbat=2.8V
Vbat=3V
Vin=3.6V, Vbat=0V
Vin=OPEN, Vbat=3V, Iout=10~500µA
Vout voltage detection
Vin=3.6V
Conditions
No load
No load
No load
[General spec]
Main circuit current1
Backup circuit current1
Backup circuit current2
Vin=3.6V Vbat=3V
Vin : Open Vbat=3V
Vin=7.2V, lro=3mA
lro=3mA
Vin=7.2V, lro=100µA∼20mA
Vin=4∼10V, lro=3mA
Vin=7.2V, lout=23mA
lout=23mA
Vin=7.2V, lout=100µA∼60mA
Vin=4∼10V, lout=23mA
Vin=7.2V, lch=3mA
lch=3mA
Vin=7.2, Ich=100µA∼20mA
Vin=4∼10V, lch=3mA
Vin voltage detection
[Regulator1]
Output voltage 1
Dropout voltage 1
Load regulation 1
Linc regulation 1
[Regulator2]
Output voltage 2
Dropout voltage 2
Load regulation 2
Linc regulation 2
[Regulator3]
Output voltage 3
Dropout voltage 3
Load regulation 3
Linc regulation 3
[Voltage detect block]
CS detect voltatge
CS release voltage
RESET detect voltage
RESET release voltage
RESET release delay time
Low operating voltage
CS sink current
CS leak current
RESET sink current
RESET leak curent
[Switch control block]
Switch voltage
CS no output voltage
Vbat switch leak current
Vbat switch resistor
This product is not designed for protection against radioactive rays.
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