FAN4868 datasheet(1/12 Pages) ONSEMI

Part #	FAN4868

Description	3 MHz, Synchronous TinyBoost Regulator

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Manufacturer	ONSEMI [ON Semiconductor]

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October, 2018 − Rev. 3

1

Publication Order Number:

FAN4868/D

FAN4868

3 MHz, Synchronous

TinyBoost) Regulator

Description

The FAN4868 is a low−power boost regulator designed to provide a

regulated 3.3 V output from a single cell Lithium or Li−Ion battery.

Output voltage options are fixed at 3.3 V with a guaranteed maximum

load current of 200 mA at VIN = 2.3 V and 300 mA at VIN = 3.3 V.

Input current in Shutdown Mode is less than 1

μA, which maximizes

battery life.

Light−load PFM operation is automatic and “glitch−free”. The

regulator maintains output regulation at no−load with as low as 37

μA

quiescent current.

The combination of built−in power transistors, synchronous

rectification, and low supply current make the FAN4868 ideal for

battery powered applications.

The FAN4868 is available in 6−bump 0.4 mm pitch Wafer−Level

Chip Scale Package (WLCSP).

Features

• Operates with Few External Components:

1

μH Inductor and 0402 Case Size Input and Output Capacitors

• Input Voltage Range from 2.3 V to 3.2 V

• Fixed 3.3 V Output Voltage Options

• Maximum Load Current >150 mA at VIN = 2.3 V

• Maximum Load Current 300 mA at VIN = 2.7 V, VOUT = 3.3 V

• Up to 92% Efficient

• Low Operating Quiescent Current

• True Load Disconnect During Shutdown

• Variable On−time Pulse Frequency Modulation (PFM) with

Light−Load Power−Saving Mode

• Internal Synchronous Rectifier

(No External Diode Needed)

• Thermal Shutdown and Overload Protection

• 6−Bump WLCSP, 0.4 mm Pitch

Applications

• Powering 3.3 V Core Rails

• PDAs, Portable Media Players

• Cell Phones, Smart Phones, Portable Instruments

www.onsemi.com

WLCSP6 0.88 x 1.23 x 0.458

CASE 567VM

See detailed ordering and shipping information on page 2 of

this data sheet.

ORDERING INFORMATION

EN

SW

L1

GND

VIN

FB

VOUT

C2

C1

B2

B1

A2

A1

VIN

CIN

2.2 μF

1 μH

4.7 μF

COUT

TYPICAL APPLICATION

SCALE 4:1

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