FAN5665UCX datasheet(1/15 Pages) FAIRCHILD

Il numero della parte	FAN5665UCX

Spiegazioni elettronici	High-Efficiency, Adaptive Charge Pump 5V Boost

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Produttore elettronici	FAIRCHILD [Fairchild Semiconductor]

Homepage	http://www.fairchildsemi.com

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October 2007

www.fairchildsemi.com

FAN5665 • Rev. 1.0.0

FAN5665

High-Efficiency, Adaptive Charge Pump 5V Boost

Features

5V Fixed Output Voltage

30mA Maximum Output Current

Built-in Charge Pump with Three Modes of

Operation: 1×, 1.5×, and 2×

Minimum External Components

Flying Capacitors Only 0.22µF

Low-noise, Constant-frequency Operation (1.2MHz)

at Heavy Loads

High-efficiency, Low-frequency Operation at Light

Loads

Low Quiescent Current

Up to 92% Efficiency

2.9V to 5.5V Input Voltage Range

Soft-start for Limiting Inrush Current

Input Under-Voltage Lockout Protection (UVLO)

Short-Circuit Protection (SCP)

Thermal Shutdown Protection (TSD)

8-bump 1.21 x 1.21mm, 0.4mm Pitch WLCSP

Applications

USB I/O Supply Regulators

Cell Phones, Smart-Phones

Pocket PCs

PDA, DSC, PMP, and MP3 Players

Description

The FAN5665 is a 5V switched capacitor step-up

DC/DC converter with an input voltage range from 2.9V

to 5.5V. Switch reconfiguration and fractional switching

techniques are utilized to achieve high efficiency over

the entire input voltage range.

The FAN5665 includes built-in under-voltage lockout,

short circuit, and thermal protection circuitry.

The FAN5665 is available in an 8-bump 0.4mm pitch

WLCSP package.

EN

VOUT

VIN

C2-

GND

C1+

C2+

C1-

C2

0.22µF

CIN

2.2µF

C

OUT

+5V

+2.9 to 5.5V

2.2µF

C1

0.22µF

Figure 1. Typical Application

Ordering Information

Part Number

Operating Temperature Range

Package

Packing Method

FAN5665UCX

-40°C to +85°C

8-Lead Wafer-Level Chip-Scale

Package (WLCSP), 1.21x1.21mm

Tape and Reel

All packages are lead free per JEDEC: J-STD-020B standard.

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