FEATURES

100 mΩ, 4.5-A Peak MOSFET Switch for High

Efficiency at 3-A Continuous Output Current

Uses External Lowside MOSFET or Diode

Fixed Output Versions −

1.2V/1.5V/1.8V/2.5V/3.3V/5.0V

Internally Compensated for Low Parts Count

Synchronizes to External Clock

180 Out of Phase Synchronization

Wide PWM Frequency − Fixed 250 kHz,

500 kHz or Adjustable 250 kHz to 700 kHz

Internal Slow Start

Load Protected by Peak Current Limit and

Thermal Shutdown

Adjustable Undervoltage Lockout

16-Pin TSSOP PowerPAD Package

APPLICATIONS

Industrial & Commercial Low Power Systems

LCD Monitors and TVs

Computer Peripherals

Point of Load Regulation for High

Performance DSPs, FPGAs, ASICs and

Microprocessors

DESCRIPTION

The TPS5435x is a medium output current synchronous

buck PWM converter with an integrated high side

MOSFET and a gate driver for an optional low side

external MOSFET. Features include a high performance

voltage error amplifier that enables maximum

performance under transient conditions. The TPS5435x

has an under-voltage-lockout circuit to prevent start-up

until the input voltage reaches a preset value; an internal

slow-start circuit to limit in-rush currents; and a power good

output to indicate valid output conditions. The

synchronization feature is configurable as either an input

or an output for easy 180° out of phase synchronization.

The TPS5435x devices are available in a thermally

enhanced 16-pin TSSOP (PWP) PowerPAD package.

TI provides evaluation modules and the SWIFT Designer

software tool to aid in quickly achieving high-performance

power supply designs to meet aggressive equipment

development cycles.