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FAN48630UC37AX View Datasheet(PDF) - Fairchild Semiconductor

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FAN48630UC37AX Datasheet PDF : 15 Pages
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April 2013
FAN48630 2.5 MHz, 1500 mA, Synchronous TinyBoost
Regulator with Bypass Mode
Features
Few External Components: 0.47 µH Inductor and
0603 Case Size Input and Output Capacitors
Input Voltage Range: 2.35 V to 5.5 V
Fixed Output Voltage Options: 3.0 V to 5.0 V
Maximum Continuous Load Current: 1500 mA
at VIN of 2.6 V Boosting VOUT to 3.5 V
Up to 96% Efficient
True Bypass Operation when VIN > Target VOUT
Internal Synchronous Rectifier
Soft-Start with True Load Disconnect
Forced Bypass Mode
VSEL Control to Optimize Target VOUT
Short-Circuit Protection
Low Operating Quiescent Current
16-Bump, 0.4 mm Pitch WLCSP
Applications
Boost for Low-Voltage Li-ion Batteries, Brownout
Prevention, Boosted Audio, USB OTG, and LTE / 3G
RF Power
Cell Phones, Smart Phones, Portable Instruments
Description
The FAN48630 allows systems to take advantage of new
battery chemistries that can supply significant energy when
the battery voltage is lower than the required voltage for
system power ICs. By combining built-in power transistors,
synchronous rectification, and low supply current; this IC
provides a compact solution for systems using advanced
Li-Ion battery chemistries.
The FAN48630 is a boost regulator designed to provide a
minimum output voltage (VOUT(MIN)) from a single-cell Li-Ion
battery, even when the battery voltage is below system
minimum. Output voltage regulation is guaranteed to a
maximum load current of 1500 mA. Quiescent current in
Shutdown Mode is less than 3 µA, which maximizes battery
life. The regulator transitions smoothly between Bypass and
normal Boost Mode. The device can be forced into Bypass
Mode to reduce quiescent current.
The FAN48630 is available in a 16-bump, 0.4 mm pitch,
Wafer-Level Chip-Scale Package (WLCSP).
+
Battery
0.47H
VIN
CIN
4.7F
SW
VSEL
EN
BYP
FAN48630
VOUT
COUT
20F
PGND
AGND
PG
SYSTEM
LOAD
Figure 1. Typical Application
© 2011 Fairchild Semiconductor Corporation
FAN48630 • Rev. 1.0.5
www.fairchildsemi.com
 

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