Copyright

© ANPEC Electronics Corp.

Rev. A.3 - Jan., 2013

APW8802

www.anpec.com.tw

1

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.

High Input Voltage 8A PWM DC/DC Converter

Features

General Description

•

Operates from An Input Battery Voltage Range of

+3V to +25V

•

±1.6% 0.75V Reference

- Over Line, Load Regulation, and Operating Temp.

•

High Efficiency all Over 90% at V

Condition

•

Power-On-Reset Monitoring on PVCC and VCC Pins

•

Excellent Line and Load Transient Responses

•

Integrated 12m

Ω @ VCC=5V N-Channel MOSFET

For High Side

•

Integrated 12m

Ω @ VCC=5V N-Channel MOSFET

For Low Side

•

Programmable PWM Frequency from 100kHz to

500kHz

•

Built-in 1.2ms Digital Soft-Start & Soft-Stop

•

Built-in COT Mode Control for Fast Response and

MLCC Supports

•

Power Good Monitoring

•

70% Under-Voltage Protection

•

125% Over-Voltage Protection

•

Adjustable Current-Limit Protection

- Using Built-in Low-Side MOSFET’s R

DS(ON)

•

Over-Temperature Protection

•

TQFN5x6-28 (Power PAK) Package

•

Lead Free and Green Devices Available

(RoHS Compliant)

Applications

•

Notebook

•

Table PC

•

Hand-Held Portable

•

AIO PC

The APW8802 is a 8A, synchronous, step-down converter

with integrated 12m

Ω N-channel High-Side MOSFET and

12m

Ω Low-Side MOSFET. The APW8802 steps down

high voltage to generate low-voltage chipset or RAM sup-

plies in notebook computers.

The APW8802 provides excellent transient response and

accurate DC voltage output in either PFM or PWM Mode.

In Pulse Frequency Mode (PFM), the APW8802 provides

very high efficiency over light to heavy loads with loading-

modulated switching frequencies. In PWM Mode, the con-

verter works nearly at constant frequency for low-noise

requirements.

The APW8802 is equipped with accurate current-limit,

output under-voltage, and output over-voltage protections,

perfect for NB applications. A Power-On-Reset function

monitors the voltage on V

operation during power-on. The APW8802 has a 1.2ms

digital soft-start and built-in an integrated output discharge

device for soft-stop. An internal integrated soft-start ramps

up the output voltage with programmable slew rate to

reduce the start-up current. A soft-stop function actively

discharges the output capacitors.

The APW8802 is available in TQFN5x6-28 (Power PAK)

package.

Simplified Application Circuit

V

OUT

L

OUT

EN

APW8802

V

IN

R

OCSET

OCSET

R

TON

TON

5V

LX

BOOT

VCC

FB

PVCC