1 Features

? 4.5-V to 18-V input voltage range

? 0.6-V to 5.5-V output voltage range

? Integrated 22-mΩ and 11-mΩ MOSFETs

? Support 8-A continuous IOUT

? 84-μA low quiescent current

? ±1 reference voltage (0.6 V) at 25°C

? ±1.5 reference voltage (0.6 V) at –40°C to 125°C

? 600-kHz switching frequency

? D-CAP3? control mode for fast transient response

? Supports POSCAP and all MLCC output capacitor

? Output discharge function

? Adjustable soft start

? Selectable PSM and FCCM under light load

? Power-good indicator to monitor output voltage

? Auto recover output OV and UV protection

? Non-latched UVLO and OT protection

? Cycle-by-cycle overcurrent protection

? Built-in output discharge feature

? Small 2.00-mm × 3.00-mm HotRod? QFN

package

2 Applications

? TV and STB, point-of-load (POL)

? Server, storage, and networking point-of-load

? Industrial PC and factory automation applications

? Distributed power systems with typical 5-V, 12-V,

15-V input

3 Description

The TPS568236 is monolithic, 8-A, synchronous buck

converters with adaptive on-time D-CAP3 control

mode. Integrated low RDS(on) power MOSFETs enable

high efficiency and offer ease-of-use with minimum

external component count for space-constrained

power systems. Features include an accurate

reference voltage, fast load transient response, autoskip

mode operation for light load efficiency, forced

PWM mode for fixed switching frequency, D-CAP3

control mode with good line, load regulation, and does

not require external compensation.

The TPS568236 provides complete protection OVP,

UVP, OCP, OTP and UVLO. The device is a combined

power-good signal and output discharge function.

The TPS568236 supports both internal and external

soft-start time option. The device has the internal fixed

soft-start time 1 ms. If the application needs longer

soft-start time, the external SS pin can be used to

achieve it by connecting the external capacitor

The TPS568236 is available in a thermally enhanced

12-pin QFN package and is designed to operate from

–40°C to 125°C junction temperature.