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TPS62843

ACTIVE

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

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Data sheet

TPS62843

ACTIVE
Data sheet Order now

Product details

Rating Catalog Operating temperature range (°C) -40 to 125 Topology Buck Type Converter Iout (max) (A) 0.6 Vin (min) (V) 1.8 Vin (max) (V) 5.5 Switching frequency (min) (kHz) 1500 Switching frequency (max) (kHz) 1500 Features Enable, Light Load Efficiency, Output discharge, Over Current Protection, Soft Start Fixed, Synchronous Rectification, UVLO fixed, VID Interface Control mode DCS-Control Vout (min) (V) 0.4 Vout (max) (V) 3.6 Iq (typ) (µA) 0.275 Duty cycle (max) (%) 100
Rating Catalog Operating temperature range (°C) -40 to 125 Topology Buck Type Converter Iout (max) (A) 0.6 Vin (min) (V) 1.8 Vin (max) (V) 5.5 Switching frequency (min) (kHz) 1500 Switching frequency (max) (kHz) 1500 Features Enable, Light Load Efficiency, Output discharge, Over Current Protection, Soft Start Fixed, Synchronous Rectification, UVLO fixed, VID Interface Control mode DCS-Control Vout (min) (V) 0.4 Vout (max) (V) 3.6 Iq (typ) (µA) 0.275 Duty cycle (max) (%) 100
DSBGA (YKA) 6 0.735 mm² 1.05 x 0.7 SOT-5X3 (DRL) 6 2.56 mm² 1.6 x 1.6
  • 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

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.

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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Technical documentation

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Type Title Date
* Data sheet TPS62843 1.8V to 5.5V, 600mA, 275nA IQ , Small-Size Step-Down Converters datasheet (Rev. C) PDF | HTML 03 Jun 2024
Technical article 3 ways low-Iq technologies extend battery life without compromising system performance PDF | HTML 05 Jan 2024
Technical article How to design wearables that are smaller and go longer between charges PDF | HTML 05 Jan 2024
EVM User's guide TPS62843xEVM-030 Evaluation Module User's Guide PDF | HTML 02 Oct 2023
Certificate TPS62843678EVM-167 EU RoHS Declaration of Conformity (DoC) 21 Dec 2021
User guide TPS628436-7-8EVM-167 Evaluation Module PDF | HTML 22 Nov 2021
White paper Benefits of a Resistor-to-Digital Converter in Ultra-Low Power Supplies 14 Oct 2019
Analog Design Journal Understanding frequency variation in the DCS-Control(TM) topology 30 Oct 2015
Analog Design Journal IQ: What it is, what it isn’t, and how to use it 17 Jun 2011

Design & development

For additional terms or required resources, click any title below to view the detail page where available.

Evaluation board

TPS628436-7-8EVM-167 — TPS62843 evaluation module for DSBGA package

The TPS628436-7-8EVM-167 evaluation module (EVM) facilitates the evaluation of the TPS62843 family of 600-mA, step-down converters with 300-nA IQ in tiny 1.05-mm by 0.8-mm WCSP packages with 0.35-mm pitch. The EVM contains three separate circuits to create output voltages between 0.4 V and 3.6 V (...)

User guide: PDF | HTML
Not available on TI.com
Evaluation board

TPS62843678EVM-030 — TPS62843 evaluation module for SOT-563 package

The TPS62843678EVM-030 facilitates the evaluation of the TPS62843 family of 600mA step-down converters with 275nA IQ in 1.6mm × 1.6mm SOT-563 packages with 0.6mm pitch. The evaluation module contains three separate circuits to create output voltages between 0.4V and 3.6V from higher input voltages (...)
User guide: PDF | HTML
Not available on TI.com
Simulation model

TPS628436 PSpice Unencrypted Transient Model

SLVMDZ6.ZIP (271 KB) - PSpice Model
Download
Simulation model

TPS628437 PSpice Unencrypted Transient Model

SLVMDZ5.ZIP (274 KB) - PSpice Model
Download
Simulation model

TPS628438 PSpice Unencrypted Transient Model

SLVMDZ7.ZIP (276 KB) - PSpice Model
Download
Package Pins CAD symbols, footprints & 3D models
DSBGA (YKA) 6 Ultra Librarian
SOT-5X3 (DRL) 6 Ultra Librarian
TI's Standard Terms and Conditions for Evaluation Items apply.

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