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FAN4603 — 600mA, Fully Integrated Buck Power Supply Module
August 2010
FAN4603
600mA, Fully Integrated, Buck Power Supply Module
Features
Solder and Play DC/DC Converter;
No External Components Required
Up to 91% Efficiency
600mA Output Current Capability
2.3V to 5.5V Input Voltage Range
Fixed Output Voltages from 1.0V to 1.8V
35µA PFM Quiescent Current
Best-in-Class Load and Line Transient Response
±2% PWM DC Voltage Accuracy
No External Components Required
High-Efficiency, Low-Ripple, Light-Load PFM
Thermal Shutdown (TSD), Under-Voltage Lockout,
(UVLO), and Short-Circuit (SCP) Protection
4.0 x 2.5mm MLP Package
Maximum Height: 1.1mm
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.
Applications
POL and Distributed DC-DC Module Applications
Small Form Factor, Battery-Powered Applications
POL Core Power for FPGA, DSP, CPU, and GPU with
Fast-Transient, Wide Dynamic Load Requirements
Wireless Cards, Meters, Hearing Aids, Bluetooth
Headsets, POS Equipment, VOIP, PDAs, MIDs,
Netbooks, and Servers
Ordering Information
Part Number
FAN4603MM18X
FAN4603MM15X
FAN4603MM13X
FAN4603MM12X
FAN4603MM10X
Output Voltage
1.82V
1.5V
1.3V
1.23V
1.0V
(1)
Package
Temperature Range
Packing
6-Lead Molded Leadless Package (MLP),
4 x 2.5 x 1mm
–40 to 85°C
Tape and
Reel
Note:
1. Other voltage options are available on request. Contact a Fairchild representative.
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