1 Features

• 4.5-V to 28-V input voltage range

• 0.6-V to 5.5-V output voltage range

• 8-A continuous output current capability

• Integrated MOSFETs, inductor, and basic passives

• 0.6-V ±1 reference voltage at 25°C

• D-CAP3™ control mode for fast transient response

• FCCM for pseudo-fixed frequency with lower

output ripple

• Adjustable soft-start time by SS capacitor

• Built-in output discharge function

• Selectable 800-kHz and 1200-kHz switching

frequency

• Power-good indicator to monitor output voltage

• Supports up to 98 duty operation

• Non-latched protections for UV, OV, OT and UVLO

• –40°C to +150°C operating junction temperature

• 19-pin 5.0-mm × 5.5-mm QFN HotRod™ package

2 Applications

• Industrial applications: medical applications,

factory automation and control (IPC, robotics), test

and measurements, pro audio video

• Space constrained POL for 12-V,19-V, 24-V powerbus

applications

3 Description

The TPSM86838 is a high-efficiency, high-voltage

input, easy-to-use synchronous buck power module.

The device integrates power MOSFETs, a shielded

inductor and basic passives, minimizing the design

size.

With the wide operating input voltage range of 4.5

V to 28 V, this module is an excellent choice for

systems powered from 12-V, 19-V, 24-V power-bus

rails. TPSM86838 supports up to 8-A continuous

output current, which output voltage is between 0.6

V and 5.5 V.

The TPSM86838 uses DCAP3 control mode to

provide fast transient response, good line and load

regulation, no requirement for external compensation,

and supports low equivalent series resistance (ESR)

output capacitors like MLCC.

The TPSM86838 operates in forced continuous

conduction mode (FCCM) during light load,

provides complete non-latched OV (Undervoltage),

UV (Undervoltage), OC (Overcurrent), OT

(Overtemperature) and UVLO (Undervoltage lockout)

protections combined with power-good indicator and

output discharge function features.

The TPSM86838 is available in a 19-pin 5.0-mm x

5.5-mm HotRod™ QFN package, and the junction

temperature is specified from –40°C to 150°C.