FAN4603 Datasheet, PDF (1/12 Pages) Fairchild Semiconductor – 600mA, Fully Integrated, Buck Power Supply Module

August 2010
FAN4603
600mA, Fully Integrated, Buck Power Supply Module
Features
ƒ Solder and Play DC/DC Converter;
No External Components Required
ƒ Up to 91% Efficiency
ƒ 600mA Output Current Capability
ƒ 2.3V to 5.5V Input Voltage Range
ƒ Fixed Output Voltages from 1.0V to 1.8V
ƒ 35µA PFM Quiescent Current
ƒ Best-in-Class Load and Line Transient Response
ƒ ±2% PWM DC Voltage Accuracy
ƒ No External Components Required
ƒ High-Efficiency, Low-Ripple, Light-Load PFM
ƒ Thermal Shutdown (TSD), Under-Voltage Lockout,
(UVLO), and Short-Circuit (SCP) Protection
ƒ 4.0 x 2.5mm MLP Package
ƒ Maximum Height: 1.1mm
Applications
ƒ POL and Distributed DC-DC Module Applications
ƒ Small Form Factor, Battery-Powered Applications
ƒ POL Core Power for FPGA, DSP, CPU, and GPU with
Fast-Transient, Wide Dynamic Load Requirements
ƒ Wireless Cards, Meters, Hearing Aids, Bluetooth
Headsets, POS Equipment, VOIP, PDAs, MIDs,
Netbooks, and Servers
Description
The FAN4603 is a fully integrated synchronous DC/DC buck
converter that provides up to 600mA of output current over an
input voltage ranging from 2.3V to 5.5V. It provides a fixed
output voltage level ranging from 1.0V to 1.8V. Other voltage
options are available on request.
The FAN4603 converter is offered as an ultra-miniature
“Solder and Play” solution that requires no external
components and is able to achieve a DC accuracy of ±2%
PWM and an output ripple less than 12mV.
Total footprint is 4.0 x 2.5mm with a maximum height of
1.1mm. It can be used in small battery-powered devices and
applications with distributed DC POL requirements.
At moderate and light loads, pulse frequency modulation is
used to operate the device in power-save mode with a typical
quiescent current of 35µA. Even with such a low quiescent
current, the part exhibits excellent transient response during
large load swings. At higher loads, the system automatically
switches to fixed-frequency control.
In shutdown mode, the supply current drops below 2µA,
reducing power consumption.
Ordering Information
Part Number Output Voltage⁽¹⁾
FAN4603MM18X
1.82V
FAN4603MM15X
1.5V
FAN4603MM13X
1.3V
FAN4603MM12X
1.23V
FAN4603MM10X
1.0V
Package
6-Lead Molded Leadless Package (MLP),
4 x 2.5 x 1mm
Temperature Range
–40 to 85°C
Packing
Tape and
Reel
Note:
1. Other voltage options are available on request. Contact a Fairchild representative.
© 2009 Fairchild Semiconductor Corporation
FAN4603 • Rev. 1.0.1
www.fairchildsemi.com