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ROHM Semiconductor |
Regulators
Battery Backup IC
BD4201FV
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.
zApplications
Portable video, Digital camera
zFeatures
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.
zExternal dimensions (Unit : mm)
3.0±0.2
85
14
0.15±0.1
(0.52)
0.1
0.22±0.1
0.65
SSOP-B8
zAbsolute maximum ratings (Ta=25°C)
Parameter
Symbol
Limits
Main power supply input Voltage
Vin
15
Back up power supply input Voltage Vbat
15
CS output Voltage
Vcs 15
RESRT output Voltage
Power dissipation
VRES
Pd
15
350 ∗
Operating temperature
Topr −30 to +85
Storage temperature
Tstg −40 to +125
∗70mm 70mm 1.6mm Glass fiber basis subtract 3.5mW / C when over 25 C
Unit
V
V
V
V
mW
C
C
zCommendable operating status (Ta=25°C)
Parameter
Power supply range
Backup power supply range
Load current range1
Load current range2
Load current range3
Symbol Min. Typ. Max. Unit
Vin 2.0 - 15.0 V
Vbat
2.0
- 15.0 V
Iro 0 - 20.0 mA
Iout 0 - 60.0 mA
Ich 0 - 20.0 mA
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Regulators
zBlock diagram
BD4201FV
Fig. 1
2/8
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