APW8822/A/B/C
System Power PWM Controller for Notebook Computers with Charge Pump
Features
Simplified Application Circuit
• Wide Input voltage Range from 6V to 25V • Provide 5 Independent Outputs with ±1.
0% Accu-
racy Over-Temperature
- PWM1 Controller with Adjustable (2V to 5.
5V) Output
- PWM2 Controller with Adjustable (2V to 5.
5V) Output
VIN 6V~25V
VLDO5
VOUT1
ENILIM1 EN LDO ENILIM2
Q1
LDO5 LDO3
VLDO3 Q3
L1 PWM1 PWM2
L2 VOUT2
Q2
Q4
Charge Pump
- 100mA Low Dropout
Regulator (LDO5) with Fixed
C1 D2
D3 C3 D4
VCP
5V Output - 100mA Low Dropout
Regulator (LDO3) with Fixed
D1
C2
C4
3.
3V Output
- 270kHz Clock Signal for 15V Charge Pump (Used General Description
VOUT1 as I...