APW7317
High Efficiency 16V, 500kHz Synchronous Step-Down Converter
Features
• Wide 4.5V to 16V Operating Input Range
• Low RDS(ON) Internal Power MOSFETs
• Low Quiescent Current
• Fast Load Transient Response
• Fixed 500kHz Switching Frequency
• Build-in soft start function
• Output Adjustable from 0.8 V to 5V
• Protection
-Output Over-Voltage Protection
-Output Under-Voltage Protection
-Over-Current Protection
-Input Over-Voltage Protection
-Over-Temperature Protection
• Available in FC-TSOT-23-6 Package
• Lead Free and Green Devices Available (RoHS
Compliant)
General Description
APW7317 is a high efficiency synchronous buck converter
with integrated 90m/56mΩ of upper/lower power
MOSFET. The APW7317 design with a COT-mode con-
trol scheme, can convert wide input voltage of 4.5V to 16V
to the output voltage adjustable from 0.8V to 5V to provide
excellent output voltage regulation.
The APW7317 is equipped with an automatic PFM/PWM
mode operation. At light load, the IC operates in the PFM
mode to reduce the switching losses. The APW7317 pro-
vides very high efficiency over light to heavy loads with
loading-modulated switching frequencies.
The APW7317 is also equipped with Power-on-reset,
softstart, and whole protections (over-temperature, over-
voltage, under-voltage, over-current and input over-
voltage) into a single package.
This device, available in FC-TSOT-23-6 package, provides
a very compact system solution external components and
PCB area.
Applications
Simplified Application Circuit
• LCD Monitors
• LCD TVs
VIN
• Networking Systems
• Distributed Power Systems
VIN
EN
BST
SW
VOUT
Pin Configuration
GND 1
SW 2
VIN 3
6 BST
5 EN
4 FB
FC-TSOT-23-6
Top View
APW7317
FB
GND
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.
1
Rev. A.5 - May., 2017
www.anpec.com.tw
