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APW8802QBI-TRL

Description
High Input Voltage 8A PWM DC/DC Converter
File Size496KB,25 Pages
ManufacturerAnpec
Websitehttp://www.anpec.com.tw/
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APW8802QBI-TRL Overview

High Input Voltage 8A PWM DC/DC Converter

APW8802
High Input Voltage 8A PWM DC/DC Converter
Features
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
OUT
=1V, V
IN
=19V
Condition
Power-On-Reset Monitoring on PVCC and VCC Pins
Excellent Line and Load Transient Responses
Integrated 12mΩ @ VCC=5V N-Channel MOSFET
For High Side
Integrated 12mΩ @ 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’ R
DS(ON)
s
Over-Temperature Protection
TQFN5x6-28 (Power PAK) Package
Lead Free and Green Devices Available
(RoHS Compliant)
General Description
The APW8802 is a 8A, synchronous, step-down converter
with integrated 12mΩ N-channel High-Side MOSFET and
12mΩ 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
PVCC
and V
CC
to prevent wrong
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
5V
V
IN
Applications
Notebook
Table PC
Hand-Held Portable
AIO PC
EN
R
OCSET
PVCC
VCC
BOOT
L
OUT
LX
R
TON
TON
OCSET
FB
V
OUT
APW8802
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 - Jan., 2013
1
www.anpec.com.tw

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