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TPS62843

Name: TPS62843
Brand: TI
SKU: TPS62843
Price: 0.478 USD

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

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Data sheet

document-pdfAcrobat TPS62843 1.8V to 5.5V, 600mA, 275nA IQ , Small-Size Step-Down Converters datasheet (Rev. C) PDF | HTML

TPS62843

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Data sheet

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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
	White paper	Understanding Functional Safety FIT Base Failure Rate Estimates per IEC 62380 and SN 29500 (Rev. A)	PDF \| HTML	30 Apr 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