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TPS62843
  • TPS62843
  • TPS62843
  • TPS62843
  • TPS62843

TPS62843

ACTIVE

1.8V to 5.5V input, 600mA ultra-low IQ step-down converter

Texas Instruments TPS62843 Product Info

1 April 2026 5

Parameters

Rating

Catalog

Topology

Buck

Iout (max) (A)

0.6

Vin (max) (V)

5.5

Vin (min) (V)

1.8

Vout (max) (V)

3.6

Vout (min) (V)

0.4

Features

Enable, Light Load Efficiency, Output discharge, Over Current Protection, Soft Start Fixed, Synchronous Rectification, UVLO fixed, VID Interface

Control mode

DCS-Control

Operating temperature range (°C)

-40 to 125

Iq (typ) (A)

0.000000275

Duty cycle (max) (%)

100

Package

DSBGA (YKA)-6-0.735 mm² 1.05 x 0.7

Features

  • 1.8V to 5.5V input voltage range
  • 0.4V to 3.6V output voltage range
  • 275nA typical quiescent current
  • 600mA output current
  • 1% output voltage accuracy
  • 4nA typical shutdown current
  • Output discharge
  • VSET pin-selectable output voltage through a single resistor
    • TPS628436: 0.4V to 0.8V
    • TPS628437: 0.8V to 1.8V
    • TPS628438: 1.8V to 3.6V
  • Designed for small passive components
    • 1µH inductor
    • Down to effective capacitance of 4µF COUT
  • High PSRR (up to 83dB)
  • Low output voltage ripple in power save mode
  • RF-friendly and fast transient DCS-Control
  • Automatic transition to no ripple 100% mode
  • 0603-inductor and 0402-capacitor size supported
  • Tiny 6-pin, 0.35mm pitch WCSP package with 0.84mm² size
  • Pin-to-pin compatible to the TPS6280x family (1A) in WCSP package
  • Available in a 1.60mm × 1.60mm SOT563 package
  • 1.8V to 5.5V input voltage range
  • 0.4V to 3.6V output voltage range
  • 275nA typical quiescent current
  • 600mA output current
  • 1% output voltage accuracy
  • 4nA typical shutdown current
  • Output discharge
  • VSET pin-selectable output voltage through a single resistor
    • TPS628436: 0.4V to 0.8V
    • TPS628437: 0.8V to 1.8V
    • TPS628438: 1.8V to 3.6V
  • Designed for small passive components
    • 1µH inductor
    • Down to effective capacitance of 4µF COUT
  • High PSRR (up to 83dB)
  • Low output voltage ripple in power save mode
  • RF-friendly and fast transient DCS-Control
  • Automatic transition to no ripple 100% mode
  • 0603-inductor and 0402-capacitor size supported
  • Tiny 6-pin, 0.35mm pitch WCSP package with 0.84mm² size
  • Pin-to-pin compatible to the TPS6280x family (1A) in WCSP package
  • Available in a 1.60mm × 1.60mm SOT563 package

Description

The TPS62843 is a high-efficiency, step-down converter family with ultra-low operating quiescent current of typically 275nA. The device features a 4nA shutdown (typical) current when disabled.

The device uses DCS-Control with a low and RF-friendly output voltage ripple to power radios.

The device operates with a typical switching frequency of 1.5MHz and extends a high efficiency at light-load down to 100µA load current and below.

3 × 18 pre-defined output voltages can be selected by connecting a resistor to the VSET pin, making the family usable across various applications with a minimum set of passive components.

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