FAN48623 — 2500 mA, Synchronous TinyBoost®
Regulator with Bypass Mode
Features
Description
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Maximum Continuous Load Current: 2500 mA
at VIN of 2.5 V Boosting VOUT to 3.3 V
The FAN48623 allow s systems to take advantage of new
battery chemistries that can supply significant energy w hen
the battery voltage is low er than the required voltage for
system pow er ICs. By combining built-in pow er transistors,
synchronous rectification, and low supply current, this IC
provides a compact solution for systems using advanced Li-
Ion battery chemistries.
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Maximum Pulse Load Current of 3.5 A f or GSM PA s
(1 Slot) and PMIC support simultaneously, VIN=3.1 V,
VOUT=3.4 V
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Up to 97% Efficient
4 External Components: 2520 case 0.47 µH Inductor
and 0603 Case Size Input and Output Capacitors
The FAN48623 is a boost regulator designed to provide a
minimum output voltage from a single-cell Li-Ion battery,
even w hen the battery voltage is below system minimum.
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Input Voltage Range: 2.5 V to 5.5 V
Fixed Output Voltage Options: 3.0 V to 5.0 V
True Bypass Operation w hen VIN > Target VOUT
Integrated Synchronous Rectifier
True Load Disconnect
The output voltage regulation is guaranteed up to
a
maximum load current of 2500 mA. The regulator transitions
smoothly betw een Bypass and normal Boost Mode. The
device can be forced into Bypass Mode to reduce quiescent
current.
The FAN48623 is available in a 16-bump, 0.4 mm pitch,
Wafer-Level Chip-Scale Package (WLCSP).
Forced Bypass Mode
VSEL Control to Optimize Target VOUT
Short-Circuit Protection (SCP)
VIN
VOUT
+
CIN
10µF
Battery
Low Operating Quiescent Current
16-Bump, 1.81 mm x 1.81 mm, 0.4 mm Pitch, WLCSP
COUT
2x22µF
SYSTEM
LOAD
SW
PGND
AGND
PG
0.47µH
FAN48623
Applications
VSEL
.
Boost for Low -Voltage Li-ion Batteries, Brow nout
Prevention, System PMIC LDOs Supplies, and
2G/3G/4G RF PA Supplies
EN
BYP
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Smart Phones, Tablets, Portable Devices
Figure 1.
Typical Application
Ordering Information
Output
Operating
Temperature
Device
Marking
Part Number
Voltage(1)
Package
Packing
VSEL0 / VSEL1
FAN48623UC315X
FAN48623UC32JX
FAN48623UC33X
FAN48623UC35X
FAN48623UC36FX
FAN48623UC50X
FAN48623UC50GX
3.150 / 3.330
3.20 / 3.413
3.300 / 3.489
3.5 / 3.7
JK
JD
JE
JF
JG
JL
16-Ball, 4x4 Array, 0.4 mm Pitch, 250 µm Ball,
Wafer-Level Chip-Scale Package (WLCSP)
Tape &
Reel
-40°C to 85°C
3.64/ 3.709
5.000 / 5.286
5.000 / 5.190
JM
Note:
1. Other output voltages are available on request. Please contact a ON Semiconductor Semiconductor representative.
© 2013 Semiconductor Components Industries, LLC
October-2017,Rev. 2
Publication Order Number:
FAN48623/D