Features

• Single Input, Dual Output Low-RON Switch

 VBUS to VOUT: 20mΩ typ

 VBUS to SYS: 35mΩ typ

 Reverse Blocking on Both Switch Paths

• Wide Input Voltage Range: 2.7V – 13.2V

 VBUS Abs Max: -6V to 28V

• Surge Protected VBUS

 IEC61000-4-5: > ±200V

• ESD Protection

 IEC61000-4-2 (Level 4) VBUS

■ Contact: ±8kV

■ Air Gap: ±15kV

 HBM: 2kV All Pins

• Integrated Over-voltage Protection (OVP)

 VBUS to VOUT: 13.9V

 VBUS to SYS: 5.25V

• Maximum Continuous Current

 VBUS to VOUT: 3.5A

 VBUS to SYS: 6A

• OTG Compatible Power-Up

• Dual Enable Control with Independent

Shutdown Control

 Active LOW VBUS to VOUT

 Active HIGH VBUS to SYS

 Active HIGH Shutdown

• VBUS detection LDO

• VBUS to SYS FLAG

• VBUS Active Discharge Control Input

• Over Temperature Protection

• Pb-free 42-Bump, WLCSP 2.71mm x 3.01mm

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

Applications

• Smartphones and Tablets

• Mobile Internet Devices

• Wearables and other Portable Devices

Brief Description

The KTS1656 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 ±200V, and is also protected

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

VBUS-to-VOUT and VBUS-to-SYS paths, providing

protection to downstream components from abnormal input

conditions.

The main switch (VBUS-to-VOUT) is an active-LOW

enabled, reverse-blocking 3.5A rated MOSFET, with an

OVP trip point of 13.9V. The secondary switch (VBUS-to-

SYS) is an active-HIGH enabled, reverse-blocking, 6.0A

rated MOSFET, with an OVP trip point of 5.25V. The VBUS

input is rated from -6V to 28V.

When VBUS is greater than 2.5V typ, the LDO output

provides an “always ON” power source, regardless of the

OVLO, ̅E̅̅N̅̅1̅ and EN2 state, to power downstream

components, thereby permitting operation without an

installed battery.

The KTS1656 also features an active-HIGH SHDN pin to

conserve power and an over-temperature thermal

protection.

The KTS1656 is packaged in advanced, fully “green”

compliant, 2.71 x 3.01mm, Wafer-Level Chip-Scale

Package (WLCSP).