FPF34892 datasheet(2/12 Pages) ONSEMI

2 / 12 page

April 2016

www.fairchildsemi.com

FPF34891 / FPF34892 • 1.1

FPF34891 / FPF34892

SIDO Over-Voltage Protection Load Switch

Features

 Single Input Dual Output (SIDO) Switch

VBUS to VOUT Path

VBUS to BAT Path

 Surge Protection under IEC 61000-4-5

VBUS: ±100 V

 Input Voltage Range

VBUS: 2.7 V ~ 13.5 V

 Max. Continuous Current Capability

VOUT Path: 3.5 A

BAT Path: 6 A

 Ultra Low On-Resistance

VOUT Path: Typ. 28 m

BAT Path: Typ. 33 m

 Selectable OVLO for V

OUT Path

 Programmable OVLO for V

BAT

 Over-Voltage Protection (OVP)

VOUT Path: 13.9 V ± 400 mV (FPF34891)

VOUT Path: 10.4 V ± 300 mV (FPF34892)

VOUT Path: 5.8 V ± 200 mV (OVSEL = GND)

BAT Path: 5.8 V ± 200 mV

 Active LOW Control for V

BUS to VOUT Path

 Active HIGH Control for V

BUS to BAT Path

 CMOS Output PowerGOOD for VBUS to BAT Path

 RCB for VBUS to BAT Path

 Over-Temperature Protection (OTP)

Description

The FPF3489x features a Single Input Dual Output

(SIDO) power switch, which offers surge protection and

Over-Voltage Protection (OVP), to protect downstream

components and enhancing overall system robustness.

Channel one (VBUS to VOUT) is an active-low, 28 V/3.5 A

rated, power MOSFET switch with an internal clamp

supporting ±100 V surge protection, fixed OVP at 5.8V

when OVSEL is tied to GND or 13.9V (FPF34891) /

10.4V (FPF34892) when OVSEL is floating.

Channel two (VBUS to BAT) is an active-high, 5 V/6 A

rated, power MOSFET, fixed OVP at VBUS is 5.8 V

(±200 mV) and Reverse Current Blocking (RCB) during

its OFF State. OVLO at BAT can be programmed by

external resistors. The Over-Voltage status will be

latched and FLAG will signal the fault by pulling low. To

re-start this channel from OVLO, EN2 need to be

toggled from LOW to HIGH.

The FPF3489x is available in a 28-bump, 1.67 mm x

2.96 mm Wafer-Level Chip-Scale Package (WL-CSP)

with 0.4 mm pitch.

Applications

 Mobile Handsets and Tablets

 Wearable Devices

Ordering Information

Part Number

Operating Temperature

Range

Top Mark

Package

Packing

Method

FPF34891UCX

-40°C to +85°C

28-Ball, 0.4 mm Pitch WLCSP

Tape & Reel

FPF34892UCX

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