Features

• Single Input, Dual Output Low On-Resistance

Switch

 VBUS to OUT: typ. 21mΩ

 VBUS to BAT: typ. 12.5mΩ (Reverse

Blocking)

• Wide Input Voltage Range: 2.7V – 13.5V

 VBUS Abs Max: 28V

• Surge and ESD Protected Input

 Surge Protection

▪ IEC61000-4-5: > ±100V

 ESD Protection

▪ IEC61000-4-2 (Level 4) VBUS

• Contact: ±8kV

• Air Gap: ±15kV

▪ HBM: 2kV All Pins

• Selectable Over-Voltage Protection (OVP)

 KTS1679: VBUS to OUT: 13.9V ±400mV or

5.8V ±200mV

 KTS1679-1: VBUS to OUT: 10.4V ±300mV

or 5.8V ±200mV

 VBUS to BAT: 5.8V ±200mV

• Maximum Continuous Current

 VBUS to OUT: 3.5A

 VBUS to BAT: 6A

• Dual Enable Control

 Active LOW VBUS to OUT

 Active HIGH VBUS to BAT

• Battery OVP Sense Pin

• VBUS to BAT FLAG

• Over Temperature Protection

• Pb-free 28-Bump, WLCSP 2.96mm x 1.67mm

• -40°C to 85°C Operating Temperature Range

Brief Description

The KTS1679 features two low resistance power switches

configured as single input, dual output, change-over

switch. The input to both switches is protected against

VBUS surge voltages of up to ±100V, and is also protected

against over-voltage, with preset trip points on both the

VBUS to OUT and VBUS to BAT paths, providing

protection to downstream components from abnormal input

conditions.

The main switch (VBUS to OUT) features a unidirectional

active –low enabled 3.5A rated MOSFET, with a selectable

OVP trip point of 13.9V ±400mV or 5.8V ±200mV or 10.4V

±300mV or 5.8V ±200mV for KTS1679-1. The secondary

switch (VBUS to BAT) is an active-HIGH enabled, reverseblocking

6.0A rated MOSFET, with an OVP trip point of

5.8V ±200mV. The input to both switches is rated up to a

maximum of 28V. A CMOS FLAG pin signals when VBUS

to OUT switch is enabled.

The KTS1679 also features an OVP battery sense pin to

prevent damage to the battery during charge, and also

integrates over-temperature thermal shutdown protection.

The over-voltage status will be latched and FLAG will be

pulled LOW to indicate the fault. To reset this channel, EN2

is required to toggle from LOW to HIGH.

The KTS1679 is packaged in advanced, fully “green”

compliant, 2.96mm x 1.67mm, Wafer-Level Chip-Scale

Package (WLCSP).

Applications

• Smartphones and Tablets

• Mobile Internet Devices

• Wearables, Portable Devices