November 2012
FPF1203 / FPF1203L / FPF1204 / FPF12045
IntelliMAX™ Ultra-Small, Slew-Rate-Controlled Load Switch
Features
Description
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1.2 V to 5.5 V Input Voltage Operating Range
Typical RON
The FPF1203 /03L / 04 / 45 are ultra-small integrated
IntelliMAX™ load switches with integrated P-channel
switch and analog control features. Integrated slew-rate
control prevents inrush current and the resulting
excessive voltage drop on the power rail. The input
voltage range operates from 1.2 V to 5.5 V to provide
power-disconnect capability for post-regulated power
rails in portable and consumer products. The low shut-
off current of 1 µA (maximum) allows power designs to
meet standby and off-power drain specifications.
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45 mΩ at VIN=5.5 V
55 mΩ at VIN=3.3 V
90 mΩ at VIN=1.8 V
185 mΩ at VIN=1.2 V
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Slew Rate Control with tR:
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FPF1203/FPF1203l/FPF1204: 100 µs
FPF12045: 2 µs
The FPF1203 / 03L / 04 / 45 are controlled by a logic
input (ON pin) compatible with standard CMOS GPIO
circuitry found on Field Programmable Gate Array
(FPGA) embedded processors. The FPF1203 / 03L / 04
/ 045 are available in 0.76 mm x 0.76 mm 4-bump
WLCSP.
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Output Discharge Function on FPF1204 / 45
Low <1.5 µA Quiescent Current
ESD Protected: Above 7 kV HBM, 2 kV CDM
GPIO / CMOS-Compatible Enable Circuitry
4-Bump, WLCSP 0.76 mm x 0.76 mm, 0.4 mm
Pitch
Applications
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Mobile Devices and Smart Phones
Portable Media Devices
Tablet PCs
Advanced Notebook, UMPC, MID
Portable Medical Devices
GPS and Navigation Equipment
Ordering Information
Switch
(Typical)
at 3.3VIN
Top
Output
Discharge
ON Pin
Activity
tR
Package
Part Number
Mark
FPF1203UCX
FPF1204UCX
QL
55 mꢀ
55 mꢀ
NA
Active HIGH 100 µs
Active HIGH 100 µs
QM
65ꢀ
FPF1204BUCX
(Backside Laminate)
4-Bump, Wafer-Level Chip-Scale
Package (WLCSP), 0.76 mm x
0.76 mm, 0.4 mm Pitch
QM
NC
QP
55 mꢀ
55 mꢀ
55 mꢀ
65ꢀ
65ꢀ
n/a
Active HIGH 100 µs
FPF12045UCX
Active HIGH
2 µs
FPF1203LUCX
(Preliminary)
Active LOW 100 µs
© 2011 Fairchild Semiconductor Corporation
FPF1203 / FPF1203L / FPF1204 / FPF12045 • Rev. 1.1.9
www.fairchildsemi.com