Features

• Wide VIN Range: 7V to 100V

• Integrated 1.5A, 150V Power MOSFET Switch

• 430mΩ (typ.) on-resistance of MOSFET Switch

• Integrated Feedback and Digital Isolator

• Internal Startup Regulator

• ±1.5 Feedback Voltage Reference

• 3kV-rms Isolation

• Frequency Adjustable from 100kHz to 1MHz

• Adjustable Soft-Start Time

• Precision Enable for Adjustable UVLO

• Optional Primary Side Bias for Optimized

Efficiency

• Integrated Cycle-by-Cycle Current Limit, Input

UVLO, Over Current Protection, Short-Circuit

Protection, and Thermal Shutdown Protection

• SOIC-16 Wide Body (10.3mm x 7.5mm)

• -40°C to 125°C Operating Junction

Temperature Range

• Safety Certification: UL1577 (No. E517623)

Brief Description

The KTB1100 is a highly integrated isolated flyback

regulator with integrated power MOSFET switch, internal

feedback, and integrated digital isolator. The internal digital

isolated eliminates the need to use an external optocoupler

and enables small total solution size. The device operates

over a wide input voltage range from 7V to 100V to support

a variety of applications.

The KTB1100 employs current-mode constant on-time

(COT) control for fast transient response as well as

superior output voltage regulation. The device features an

adjustable soft-start function to limit inrush current during

start-up. The device has integrated protection features

including input voltage UVLO, output overvoltage

protection (OVP), cycle-by-cycle current limit, short-circuit

protection and thermal shutdown.

The KTB1100 is available in RoHS and Green compliant

SOIC-16 package.

Applications

• Battery Management System (BMS) in EVs

• Telecom and Communications Power Systems

• Industrial PLCs, Smart Meters

• Power-Over-Ethernet (PoE)

• Bias supply for isolated DC-DC converters

• Low power isolated power modules