PWM Controller. APW8823 Datasheet

APW8823 Controller. Datasheet pdf. Equivalent

Part APW8823
Description System Power PWM Controller
Feature APW8823 System Power PWM Controller with Economy Standby Mode Features Simplified Application Cir.
Manufacture ANPEC
Datasheet
Download APW8823 Datasheet



APW8823
APW8823
System Power PWM Controller with Economy Standby Mode
Features
Simplified Application Circuit
Wide Input voltage Range from 5.5V to 25V
VIN
Provide 5 Independent Outputs with ±1.0% Accu- 5.5V~25V
racy Over-Temperature
VLDO5
Q1
EN1
EN2
LDO5 LDO3
- PWM1 Controller with Adjustable (2V to 5.5V) Out-
put
- PWM2 Controller with Adjustable (2V to 5.5V) Out-
put
VOUT1
L1
Q2
PWM1 PWM2
Charge Pump
- 100mA Low Dropout Regulator (LDO5) with Fixed
5V Output
C1 D2
D3 C3
Q3
L2
VLDO3
VOUT2
Q4
D4 VCP
- 100mA Low Dropout Regulator (LDO3) with Fixed
3.3V Output
D1 C2
C4
- 250kHz Clock Signal for 15V Charge Pump (Used General Description
PWM1 as Its Power Supply)
The APW8823 integrates dual step-down, constant-on-
Excellent Line/Load Regulations about ±1.5% over time, synchronous PWM controllers (that drives dual N-
temperature range at PWM Channels
channel MOSFETs for each channel) and two low drop-
Low Consumption in Standby Mode
out regulators as well as various protections into a chip.
2Cells Input Battery Support
The PWM controllers step down high voltage of a battery
Built in POR Control Scheme Implemented
to generate low-voltage for NB applications. The output
Constant On-Time Control Scheme
of PWM1 and PWM2 can be adjusted from 2V to 5.5V by
Built in Soft Start for PWM Outputs and Soft Stop setting a resistive voltage-divider from VOUTx to GND.
for PWM Outputs and LDO Outputs
The linear regulators provide 5V and 3.3V output for
Integrated Bootstrap Forward P-CH MOSFET
standby power supply. The linear regulators provide up
High Efficiency over Light to Full Load Range to 100mA output current. When the PWMx output voltage
(PWMs)
is higher than LDOx bypass threshold, the related LDOx
Built in Power Good Indicators (PWMs)
regulator is shut off and its output is connected to VOUTx
60% Under-Voltage and 115% Over-Voltage Protec- by internal switchover MOSFET. It can save power
tions (PWM)
Adjustable Current-Limit Protection (PWMs)
dissipation. The charge pump circuit with 250kHz clock
driver uses VOUT1 as its power supply to generate ap-
- Using Sense Low-Side MOSFETs R
DS(ON)
Over-Temperature Protection
proximately 15V DC voltage.
The APW8823 provides excellent transient response and
3mmx3mm Thin QFN-20 (TQFN3x3-20) package
accurate DC output voltage in either PFM or PWM Mode.
Lead Free and Green Device Available (RoHS In Pulse-Frequency Mode (PFM), the APW8823 provides
Compliant)
very high efficiency over light to heavy loads with loading-
modulated switching frequencies. The Forced-PWM
Mode works nearly at constant frequency for low-noise
requirements. The unique ultrasonic mode maintains the
switching frequency above 25kHz, which eliminates noise
in audio application.
ANPEC reserves the right to make changes to improve reliability or manufacturability without notice, and
advise customers to obtain the latest version of relevant information to verify before placing orders.
Copyright © ANPEC Electronics Corp.
Rev. A.3 - Sep., 2016
1
www.anpec.com.tw



APW8823
APW8823
General Description (Cont.)
Applications
The APW8823 has individual enable controls for each Notebook and Sub-Notebook Computers
PWM channels. Pulling both EN1/2 pin of APW8823A/ Portable Devices
C/G low shuts down the all of outputs unless LDO3 output. DDR1, DDR2, and DDR3 Power Supplies
The LDO3 and LDO5 of APW8823B/D/E/F/H are always 3-Cell and 4-Cell Li+ Battery-Powered Devices
on standby power.The APW 8823 is available in a Graphic Cards
TQFN3x3-20 package.
Game Consoles
Telecommunications
Ordering and Marking Information
APW8823A
APW8823B
APW8823C
APW8823D
APW8823E
APW8823F
APW8823G
APW8823H
APW8823A QB :
APW
8823A
XXXXX
APW8823B QB :
APW
8823B
XXXXX
APW
APW8823C QB : 8823C
XXXXX
APW
APW8823D QB : 8823D
XXXXX
APW8823E QB :
APW
8823E
XXXXX
APW8823F QB :
APW
8823F
XXXXX
APW
APW8823G QB : 8823G
XXXXX
APW
APW8823H QB : 8823H
XXXXX
Assembly Material
Handling Code
Temperature Range
Package Code
Package Code
QB: TQFN3x3-20
Operating Ambient Temperature Range
I : -40 to 85 °C
Handling Code
TR : Tape & Reel
Lead Free Code
L : Lead Free Device G : Halogen and Lead Free Device
XXXXX - Date Code
XXXXX - Date Code
XXXXX - Date Code
XXXXX - Date Code
XXXXX - Date Code
XXXXX - Date Code
XXXXX - Date Code
XXXXX - Date Code
Copyright © ANPEC Electronics Corp.
Rev. A.3 - Sep., 2016
2
www.anpec.com.tw







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