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.