LP3923_15 Datasheet, PDF (27/37 Pages) Texas Instruments – Cellular Phone Power Management Unit

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VBATT
10
µF
10 µF
LP3923
SNVS567B – APRIL 2010 – REVISED MAY 2013
BUCK OUT/VIN1
10 µF
AC Adapter or USB
ACOK_N
CHG_IN
1 µF
28V OVP & Rev.
Current Blocking
LDO3
IMON
R3
C3
LDO3
VBATT
1.5k
1.5k
SEL
SDA
SCL
VBATT
PON_N
PS_HOLD
RESET_N
PWR_ON
HF_PWR
Charger
LDO3
Serial Interface
&
Control
BUCK OUT/VIN1
1.7V...VINB
@700 mA
C1
10 µF
C2
SW
2.2 µH
R1
FB
R2
GNDB
VBATT
10 µF
VINB
Buck
LP3923
Thermal
Shutdown
Voltage
Reference
UVLO
LDO1
LILO
LDO2
LILO
LDO3
D-type
LDO4
A-type
LDO5
A-type
LDO6
A-type
LDO7
A-type
LDO8
D-type
LDO1
1 µF
CORE
1.8V/3.0V
@300 mA
LDO2
1 µF
FLASH
1.8V/3.0V
@300 mA
LDO3
1 µF
DIGI
3.0V
@300 mA
TCXO_EN
LDO4
1 µF
TCXO
3.0V
@80 mA
RX_EN
LDO5
1 µF
RX
3.0V
@150 mA
TX_EN
LDO6
1 µF
TX
3.0V
@150 mA
LDO7
1 µF
GP
3.0V
@150 mA
LDO8
1 µF
VIBRATOR
3.0V
@150 mA
Figure 7. Typical Application Circuit
(Buck Output used as input for LILOs)
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