FPF1048 Datasheet, PDF (1/3 Pages) Fairchild Semiconductor – IntelliMAX™ 3A-Capable, Slew-Rate-Controlled Load Switch with True Reverse Current Blocking

March 2012
FPF1048B
IntelliMAX™ 3A-Capable, Slew-Rate-Controlled Load Switch
with True Reverse Current Blocking
Features
 Input Voltage Operating Range: 1.5V to 5.5V
 Typical R_DS(ON):
- 21mΩ at V_IN=5.5V
- 23mΩ at V_IN=4.5V
- 41mΩ at V_IN=1.8V
- 90mΩ at V_IN=1.5V
 Slew Rate/Inrush Control with t_R: 2.7ms (Typ.)
 3A Maximum Continuous Current Capability
 Low Off Switch Current: <1µA
 True Reverse Current Blocking (TRCB)
 Logic CMOS IO Meets JESD76 Standard for GPIO
Interface and Related Power Supply Requirements
 ESD Protected:
- Human Body Model: >8kV
- Charged Device Model: >1.5kV
- IEC 61000-4-2 Air Discharge: >15kV
- IEC 61000-4-2 Contact Discharge: >8kV
Applications
 Smart Phones, Tablet PCs
 Storage, DSLR, and Portable Devices
Description
The FPF1048B advanced load management switch
targets applications requiring a highly integrated
solution. It disconnects loads powered from the DC
power rail (<6V) with stringent off-state current targets
and high load capacitances (up to 100µF). The
FPF1048B consists of slew-rate controlled low-
impedance MOSFET switch (23mΩ typical) and
integrated analog features. The slew-rate controlled
turn-on characteristic prevents inrush current and the
resulting excessive voltage droop on power rails.
The FPF1048B has a True Reverse Current Blocking
(TRCB) function that obstructs unwanted reverse
current from V_OUT to V_IN during both ON and OFF states.
The exceptionally low off-state current drain (<1µA
maximum) facilitates compliance with standby power
requirements. The input voltage range operates from
1.5V to 5.5V_DC to support a wide range of applications in
consumer, optical, medical, storage, portable, and
industrial-device power management. Switch control is
managed by a logic input (active HIGH) capable of
interfacing directly with low-voltage control signal /
General-Purpose Input / Output (GPIO) without an
external pull-down resistor.
The device is packaged in advanced, fully “green”
compliant, 1.0mm x 1.5mm, Wafer-Level Chip-Scale
Package (WLCSP) with backside lamination.
Ordering Information
Part Number
Top
Mark
FPF1048BUCX RA
Switch R_ON
(Typical)
at 4.5V_IN
23mΩ
Input Output ON Pin
Buffer Discharge Activity
t_R
CMOS
NA
Active
HIGH
2.7ms
Package
6-Ball WLCSP, 2x3 Array,
0.5mm Pitch, 300µm Ball
© 2011 Fairchild Semiconductor Corporation
FPF1048B • Rev. 1.0.3
www.fairchildsemi.com