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TPSM86838
  • TPSM86838
  • TPSM86838

TPSM86838

ACTIVE

4.5-V to 28-V input, 8-A FCCM mode, synchronous buck module with HotRod QFN package

Texas Instruments TPSM86838 Product Info

1 April 2026 3

Parameters

Rating

Catalog

Topology

Buck

Iout (max) (A)

8

Vin (max) (V)

28

Vin (min) (V)

4.5

Vout (max) (V)

5.5

Vout (min) (V)

0.6

Features

Adjustable soft start, Enable, Forced PWM, Light-load efficiency, Overcurrent protection, Synchronous rectification

Operating temperature range (°C)

-40 to 150

Type

Module

Duty cycle (max) (%)

98

Control mode

D-CAP3

Switching frequency (min) (kHz)

800

Switching frequency (max) (kHz)

1200

Package

B3QFN (RCG)-19-27.5 mm² 5.5 x 5

Features

  • 4.5V to 28V input voltage range
  • 0.6V to 5.5V output voltage range
  • 8A continuous output current capability
  • Integrated MOSFETs, inductor, and basic passives
  • 0.6V ±1% reference voltage at 25°C
  • D-CAP3™ control mode for fast transient response
  • TPSM86838 with FCCM for pseudo-fixed frequency with lower output ripple
  • TPSM86837 with Eco-mode for high light-load efficiency
  • Adjustable soft-start time by SS capacitor
  • Built-in output discharge function
  • Selectable 800kHz and 1200kHz 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 5.0mm × 5.5mm QFN HotRod™ package
  • 4.5V to 28V input voltage range
  • 0.6V to 5.5V output voltage range
  • 8A continuous output current capability
  • Integrated MOSFETs, inductor, and basic passives
  • 0.6V ±1% reference voltage at 25°C
  • D-CAP3™ control mode for fast transient response
  • TPSM86838 with FCCM for pseudo-fixed frequency with lower output ripple
  • TPSM86837 with Eco-mode for high light-load efficiency
  • Adjustable soft-start time by SS capacitor
  • Built-in output discharge function
  • Selectable 800kHz and 1200kHz 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 5.0mm × 5.5mm QFN HotRod™ package

Description

The TPSM8683x 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 4.5V to 28V, this device is an excellent choice for systems powered from 12V, 19V, 24V power-bus rails. TPSM8683x supports up to 8A continuous output current, which output voltage is between 0.6V and 5.5V.

The TPSM8683x 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 which maintains lower output ripple during all load conditions. TPSM86837 operates at Eco-mode to attain high efficiency at light load.

The TPSM8683x 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 TPSM8683x is available in a 19-pin 5.0mm × 5.5mm HotRod QFN package, and the junction temperature is specified from –40°C to 150°C.

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