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PDF BD4201FV Data sheet ( Hoja de datos )
| Número de pieza | BD4201FV | |
| Descripción | Battery Backup IC | |
| Fabricantes | ROHM Semiconductor | |
| Logotipo |  |
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Hay una vista previa y un enlace de descarga de BD4201FV (archivo pdf) en la parte inferior de esta página. Total 9 Páginas | ||
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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
1/8
1 page  
Regulators
zMeasurement circuit
BD4201FV
1 Vss
SW1
a
Ich
b V V1 10µF
2 Vch
SW2 b
a
3
A I2
4
SW3
V V2
ba
A I3
Vbat
CS
Vro 8
10µF
Vin 7
SW6
ab
A I1
V V5
a
SW7
b
Iro
Vout 6 10µF
SW5
V V4
a bcd
RESET
5
V3 V a b
A
I4
SW4
Iout
A I6
zApplication circuit
Fig.2
Vch
Vout
100kΩ
CS
1 Vss
2 Vch
10µF
3 Vbat
3V
4 CS
0.01µF
Vro 8
Vin 7
Vout 6
RESET 5
10µF
Vro
6V
Vout
22µF
100kΩ
0.01µF
RESET
Fig.3
5/8
5 Page | ||
| Páginas | Total 9 Páginas | |
| PDF Descargar | [ Datasheet BD4201FV.PDF ] | |
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