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TPSM828511
  • TPSM828511
  • TPSM828511

TPSM828511

ACTIVE

2.7-V to 6-V, 1-A low-noise step-down module with integrated inductor in QFN package

Texas Instruments TPSM828511 Product Info

1 April 2026 0

Parameters

Rating

Catalog

Topology

Buck, Step-Down Converter, Synchronous Buck

Iout (max) (A)

1

Vin (max) (V)

6

Vin (min) (V)

2.7

Vout (max) (V)

5.5

Vout (min) (V)

0.6

Features

1% accuracy, Adjustable soft start, Enable, Forced PWM, Frequency synchronization, Light load efficiency, Output discharge, Over Current Protection, Power good, Pre-Bias Start-Up, Soft Start Adjustable, Soft-start adjustable, Synchronous Rectification, Tracking, UVLO adjustable

EMI features

Low parasitic Hotrod packaging

Operating temperature range (°C)

-40 to 125

Switch current limit (typ) (A)

2.6

Type

Converter (Integrated Switch), DC/DC converter, Module

Duty cycle (max) (%)

100

Control mode

current mode, current mode control

Switching frequency (min) (kHz)

4000

Switching frequency (max) (kHz)

1800

Package

QFN-FCMOD (RDY)-9-8.1 mm² 2.7 x 3

Features

  • 2.7-V to 6-V input voltage range
  • 0.6-V to 5.5-V output voltage range
  • Family of 0.5-A, 1-A and 2-A devices
  • 20-µA typical quiescent current
  • ±1% feedback voltage accuracy (PWM operation)
  • 2.25-MHz switching frequency (PWM operation)
  • 1.8-MHz to 4-MHz external synchronization
  • Selectable forced PWM or PFM/PWM operation
  • Adjustable soft start-up to 10 ms or tracking
  • Precise ENABLE input allows
    • User-defined undervoltage lockout
    • Exact sequencing
  • 100% duty cycle mode
  • Active output discharge
  • Power-good output with window comparator
  • –40°C to 125°C operating temperature range
  • 2.7-mm × 3.0-mm QFN package with 0.5-mm pitch
  • 2.7-V to 6-V input voltage range
  • 0.6-V to 5.5-V output voltage range
  • Family of 0.5-A, 1-A and 2-A devices
  • 20-µA typical quiescent current
  • ±1% feedback voltage accuracy (PWM operation)
  • 2.25-MHz switching frequency (PWM operation)
  • 1.8-MHz to 4-MHz external synchronization
  • Selectable forced PWM or PFM/PWM operation
  • Adjustable soft start-up to 10 ms or tracking
  • Precise ENABLE input allows
    • User-defined undervoltage lockout
    • Exact sequencing
  • 100% duty cycle mode
  • Active output discharge
  • Power-good output with window comparator
  • –40°C to 125°C operating temperature range
  • 2.7-mm × 3.0-mm QFN package with 0.5-mm pitch

Description

TPSM82851x is a family of pin-to-pin compatible, 0.5-A, 1-A, and 2-A high-efficiency and easy to use synchronous step-down DC/DC power modules with integrated inductors. The devices are based on a fixed-frequency peak current-mode control topology and they can be used in telecommunication, test and measurement, and medical applications with high power density and ease of use requirements. Low resistance switches allow up to 2-A continuous output current at high ambient temperatures. The switching frequency is internally fixed at 2.25 MHz and can also be synchronized to an external clock in the range from 1.8 MHz to 4 MHz. In PFM/PWM mode, the TPSM82851x automatically enters power save mode at light loads to maintain high efficiency across the whole load range. The TPSM82851x provides a 1% feedback voltage accuracy in PWM mode which helps design a power supply with high output voltage accuracy. The SS/TR pin sets the start-up time or tracks the output voltage to an external source. This feature allows external sequencing of different supply rails and limits the inrush current during start-up.

TPSM82851x is a family of pin-to-pin compatible, 0.5-A, 1-A, and 2-A high-efficiency and easy to use synchronous step-down DC/DC power modules with integrated inductors. The devices are based on a fixed-frequency peak current-mode control topology and they can be used in telecommunication, test and measurement, and medical applications with high power density and ease of use requirements. Low resistance switches allow up to 2-A continuous output current at high ambient temperatures. The switching frequency is internally fixed at 2.25 MHz and can also be synchronized to an external clock in the range from 1.8 MHz to 4 MHz. In PFM/PWM mode, the TPSM82851x automatically enters power save mode at light loads to maintain high efficiency across the whole load range. The TPSM82851x provides a 1% feedback voltage accuracy in PWM mode which helps design a power supply with high output voltage accuracy. The SS/TR pin sets the start-up time or tracks the output voltage to an external source. This feature allows external sequencing of different supply rails and limits the inrush current during start-up.

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