Features

• Wide input operating range from 6V to 40V

DC Input

• Low resistance MOSFET Switch typ. 41mΩ

• Reverse Polarity Protection to -28V

• Fixed over-voltage protection

− Fixed: 27V ± 0.8V or 20.3V ± 0.8V

• Fast OVP response time typ. 360ns

• Continuous output current up to 6A

• Over-temperature Protection with Auto-Retry

• Open drain fault flag

• Shutdown pin with low shutdown current

• Voltage Input detection output

• Input ESD protection to IEC61000-4-2 (Level 4)

− Contact: ±8kV

− Air: ±15kV

− Other pins HBM: ±2kV

• Pb-free TDFN44-12 package

• -40°C to +85°C operating temperature range

Applications

• Reverse Power Supply Protection

• Telecom/Server/Networking System

• Industrial and Medical Systems

• Portable Instrumentation

Brief Description

The KTS1640 and KTS1641 are low-resistance,

electronically controlled load switches, with enhanced

protection features, used to protect loads from abnormal

power supply or load problems. Operating from a wide

input supply voltage of between 6V and 40V, the KTS1640

and KTS1641 protect the system from reverse input

supplies down to -28V.

Integrating two N-Channel MOSFETs, the device includes

fixed over-voltage protection of 27V (KTS1640) or 20.3V

(KTS1641) along with over-temperature protection with

auto-retry. Following an over-voltage condition only,

KTS1640 and KTS1641 will automatically resume

operation, when the over-voltage condition is removed.

An ENABLE pin allows the MOSFET switch to be enabled

or disabled, placing the device in a low current shutdown

mode. System monitoring is provided by a fault

FLAG.

To inform the system that the battery or power supply is

connected, BDET mirrors the input voltage less the drop

across the reverse battery protection MOSFET and

sources up to a maximum of 120mA

Further protection includes over-temperature shutdown

and the input pin is fully ESD protected to comply with the

IEC61000-4-2 (Level 4) specification.

The KTS1640 and KTS1641 are packaged in an advanced,

fully green compliant, TDFN44-12 package.