FAN48632UC33X datasheet(1/13 Pages) FAIRCHILD

Part #	FAN48632UC33X

Description	2.5 MHz, 2.0 A Pulsed-Load Synchronous TinyBoost

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Manufacturer	FAIRCHILD [Fairchild Semiconductor]

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April 2014

www.fairchildsemi.com

FAN48632 • Rev. 1.0.3

FAN48632

2.5 MHz, 2.0 A Pulsed-

Load Synchronous TinyBoost™

Regulator with Bypass Mode for GSM PA Supply

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 : 3.3 V, 3.5 V

 Maximum Continuous Load Current of: 1.5 A

at VIN of 2.6 V

 Maximum Pulsed Load current :of 2.0 A for GSM 217 Hz

repetition rate ,boosting VOUT to 3.3 V or 3.5 V

 Up to 96% Efficient

 True Bypass Operation when V

IN > Target VOUT

 Internal Synchronous Rectifier

 Soft-Start with True Load Disconnect

 Forced Bypass Mode

 V

SEL 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, Supply GSM RF PA.

 Cell Phones, Smart Phones, Tablets

Description

The FAN48632 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 FAN48632 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. In boost mode, output voltage regulation is

guaranteed to a maximum load current of 1.5 A continuous

and 2.0 A pulsed. 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 FAN48632 is available in a 16-bump, 0.4 mm pitch,

Wafer-Level Chip-Scale Package (WLCSP).

FAN48632

VOUT

PGND

COUT

PG

0.47

H

40

F

VIN

10

F

SW

VSEL

EN

BYP

CIN

+

Battery

SYSTEM

LOAD

AGND

Figure 1. Typical Application

Ordering Information

Part Number

Output Voltage

VSEL0 / VSEL1

Soft-Start

Forced

Bypass

Operating

Temperature

Package

Packing

FAN48632UC33X

3.30 / 3.49

FAST

Low IQ

-40°C to 85°C

16-Ball, 4x4 Array, 0.4 mm

Pitch, 250 µm Ball, Wafer-Level

Chip-Scale Package (WLCSP)

Tape

and

Reel

FAN48632BUC33X

(1)

3.30 / 3.49

FAST

Low IQ

FAN48632UC35X

3.50 / 3.70

FAST

Low IQ

Note:

1.

The FAN48632BUC33X includes backside lamination.

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