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FAN4860 — 3MHz, Synchronous TinyBoost™ Regulator
February 2014
FAN4860
3 MHz, Synchronous TinyBoost™ Regulator
Features
Operates with Few External Components: 1
H
Inductor
and 0402 Case Size Input and Output Capacitors
Input Voltage Range from 2.3 V to 5.4 V
Fixed 3.3 V, 5.0 V, or 5.4 V Output Voltage Options
Maximum Load Current >150 mA at V
IN
=2.3 V
Maximum Load Current 300 mA at V
IN
=3.3 V, V
OUT
=5.4 V
Maximum Load Current 300 mA at V
IN
=3.3 V, V
OUT
=5.0 V
Maximum Load Current 300 mA at V
IN
=2.7 V, V
OUT
=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-Pin 2 x 2 mm UMLP
6-Bump WLCSP, 0.4 mm Pitch
Description
The FAN4860 is a low-power boost regulator designed to
provide a regulated 3.3 V, 5.0 V or 5.4 V output from a single
cell Lithium or Li-Ion battery. Output voltage options are fixed
at 3.3 V, 5.0 V, or 5.4 V with a guaranteed maximum load
current of 200 mA at V
IN
=2.3 V and 300 mA at V
IN
=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 FAN4860 ideal
for battery powered applications.
The FAN4860 is available in 6-bump 0.4 mm pitch Wafer-
Level Chip Scale Package (WLCSP) and a 6-lead 2x2 mm
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