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TPS62802YKAR

1.75V-5.5V, 1A ultra-low IQ buck converter, 2.3μA Iq, 4MHz, DSBGA-6 (1.05x0.70mm), R2D VOUT selection

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Manufacturer Part：

TPS62802YKAR

Package：

6-DSBGA (1.05x0.70mm)

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Description

Product Overview

The TPS62802YKAR from Texas Instruments is an ultra-low quiescent current step-down converter operating from 1.75V to 5.5V input, delivering up to 1A output. With only 2.3μA operating quiescent current and 4MHz switching frequency, it achieves extremely small solution size in a 0.7×1.05mm DSBGA-6 package. The innovative R2D converter allows flexible output voltage selection via a single external resistor.

Key Specifications

Topology Buck (Step-Down)
Input Voltage Range 1.75V ~ 5.5V
Output Voltage Range 1.8V ~ 3.3V (16 selectable via R2D)
Output Current 1A
Switching Frequency 4 MHz
Quiescent Current 2.3 μA (typical)
Output Voltage Accuracy 1%
Control Mode DCS-Control
Synchronous Rectifier Yes
Duty Cycle (max) 100%
Operating Temperature -40°C ~ 125°C (TJ)
Package 6-DSBGA (1.05×0.70mm)
Part Status Active

Features

  • 2.3μA ultra-low operating quiescent current
  • 4MHz switching frequency enables tiny external components
  • R2D converter: 16 selectable output voltages via one resistor
  • 1% output voltage accuracy
  • Smart enable pin for mode selection (Power Save / Forced PWM)
  • Output discharge function
  • 100% duty cycle operation for lowest dropout
  • Supports less than 0.6mm design height
  • Less than 5mm² total solution size

Applications

  • Wearable electronics and fitness trackers
  • IoT sensor nodes and battery-powered devices
  • Smartphone and tablet sub-rail regulation
  • Portable medical devices
  • Ultra-compact embedded systems

The TPS62802YKAR is an ultra-low quiescent current step-down converter from Texas Instruments designed for battery-powered and space-constrained applications. Operating from a 1.75V to 5.5V input, it delivers up to 1A output current with a typical quiescent current of just 2.3μA. The innovative R2D (Resistor-to-Digital) converter allows the selection of 16 internally set output voltages (1.8V to 3.3V) by connecting a single external resistor to the VSEL/MODE pin, eliminating the need for a traditional resistor divider and improving output voltage accuracy to 1%. The 4MHz switching frequency enables the use of tiny 0.47μH inductors and small capacitors, achieving a total solution size of less than 5mm². The DCS-Control topology provides seamless transition between Power Save Mode and Forced PWM Mode.

The TPS62802 uses TI’s DCS-Control topology with an integrated R2D (Resistor-to-Digital) converter for output voltage programming. The R2D converter reads the resistance value connected to the VSEL/MODE pin and selects one of 16 pre-programmed output voltages from an internal lookup table. This approach provides better accuracy than a traditional external resistor divider. The VSEL/MODE pin serves dual purposes: during startup, it determines the output voltage via the connected resistor; after startup, pulling the pin high forces PWM mode for lowest output ripple. In Power Save Mode at light loads, the device operates in PFM mode with 2.3μA quiescent current, generating single switching pulses followed by sleep periods. The output discharge function ensures a defined output voltage down-ramp when the device is disabled.

Pin Name Type Description
A1 VIN PWR Input supply voltage (1.75V-5.5V)
A2 GND GND Ground
B1 EN I Enable (active high)
B2 VSEL/MODE I Voltage select resistor / Mode control
C1 SW O Switch node (connect to inductor)
C2 VOS I Output voltage sense
  • Wearable Devices: Ultra-compact POL conversion with sub-0.6mm height for smartwatches and fitness bands
  • IoT Sensors: 2.3μA quiescent current extends battery life in always-on wireless sensor nodes
  • Smartphones: Sub-rail regulation for processor I/O and memory rails from Li-ion battery
  • Portable Medical: Low-power conversion for glucose monitors and pulse oximeters
  • Compact Embedded: Less than 5mm² solution size for space-constrained PCB layouts
Model Manufacturer Key Difference
TPS62800YKAR Texas Instruments 0.4V-0.775V output range, same package
TPS62801YKAR Texas Instruments 0.8V-1.55V output range, same package
TPS62808YKAR Texas Instruments 1.5MHz version, 1.8V-3.3V output
NCP1840AMUTAG onsemi 1A buck, 2MHz, DFN-6, similar size
MAX38640AATA+T Analog Devices 0.5A, 330nA IQ, TDFN-6
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Certification
We have obtained a number of professional certifications and built our own professional testing laboratory.This ensures that every product we deliver to our customers meets the highest quality requirements.We conduct tests in strict accordance with procedures to ensure stable product quality and accurate parameters.To guarantee genuine original parts, we also cooperate with reliable third-party testing institutions for strict quality inspection.We always attach great importance to quality and fully comply with industry standards, relevant regulations, and ISO 9001:2015 requirements.

Shipping & Payment

All electronic components we source from our partnered supply chains go through strict incoming inspections.Through careful testing, we ensure everything delivered to customers is genuine original parts and meets quality requirements.In addition, we keep complete inspection records to make the entire supply chain process clear and traceable.

Certification
We have obtained a number of professional certifications and built our own professional testing laboratory.This ensures that every product we deliver to our customers meets the highest quality requirements.We conduct tests in strict accordance with procedures to ensure stable product quality and accurate parameters.To guarantee genuine original parts, we also cooperate with reliable third-party testing institutions for strict quality inspection.We always attach great importance to quality and fully comply with industry standards, relevant regulations, and ISO 9001:2015 requirements.

Service & Packaging

All electronic components we source from our partnered supply chains go through strict incoming inspections.Through careful testing, we ensure everything delivered to customers is genuine original parts and meets quality requirements.In addition, we keep complete inspection records to make the entire supply chain process clear and traceable.

Certification
We have obtained a number of professional certifications and built our own professional testing laboratory.This ensures that every product we deliver to our customers meets the highest quality requirements.We conduct tests in strict accordance with procedures to ensure stable product quality and accurate parameters.To guarantee genuine original parts, we also cooperate with reliable third-party testing institutions for strict quality inspection.We always attach great importance to quality and fully comply with industry standards, relevant regulations, and ISO 9001:2015 requirements.

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