KTS1686

November 2016 - Revision 04a

Page 1

Company Confidential

Features

• Wide Input voltage range: 3.0V to +28V

• Integrated typical 65mΩ N-Channel MOSFET

• 4.5A Continuous Current

• Wide Over-Voltage threshold range

 Adjustable: 5V to 22V

 Fixed: 5.885V ± 3%

• Fast Over-Voltage response time 100ns

• Start-up Debounce time : 20ms (typ.)

• Low Quiescent Current : 140µA (typ.)

• Integrated Protection

 Thermal Shutdown

 Under voltage protection (UVLO)

 Soft-Start

 OUT to IN Reverse Blocking

• Open-drain & Logic Output Power Good pins

• Integrated Surge Protection up to +100V

• Pb-free Package:

 15-Bump WLCSP 1.6mm x 2.1mm

• -40°C to +85°C Temperature Range

Applications

• Smartphones and Tablets

• Mobile Internet Devices

• Peripherals, E-Readers

Brief Description

The KTS1686 over-voltage protection device features high

current integrated N-Ch MOSFETs with an ultra-low IN to

OUT on-resistance of 65

mΩ (typical), actively protecting

low-voltage systems from voltage supply faults up to

+28VDC. An internal clamp protects the device from

surges up to +100V.

An input voltage exceeding the over-voltage threshold will

cause the internal MOSFET to turn off, preventing

excessive voltage from damaging downstream devices.

When the OVLO input set below the external OVLO select

voltage, the KTS1686 automatically chooses the internal

fixed OVLO threshold, preset to 5.885V (typical). The over-

voltage protection threshold can be adjusted with optional

resistor divider to a voltage between 5V and 22V.

The KTS1686 also features reverse bias blocking,

preventing any voltage present at OUT not feeding back

into IN when the device is in the OFF state. When OTG_EN

is high, the path from OUT to IN is enabled, to permit the

powering of external OTG peripherals.

The KTS1686 also features additional protection including

enhanced ESD protection and thermal protection to protect

against over-load conditions.

The KTS1686 is available in a RoHS and Green compliant

15-Bump 1.6mm x 2.1mm WLCSP.

Typical Application

GND

OUT

IN

ACOK

C

IN

0.1µF

C

OUT

1µF

Battery

Charger

PMIC

Battery

Adapter/

USB

OVLO

R1

R2

OTG_EN

Application

Processor

KTS1686

ACOK

V

IO

V

IN

V

OUT

Optional

(For adjustable OVLO)

R3

100K

R4

100K

Overvoltage Protector with Bidirectional Blocking and Surge Protection