TPS64203

ACTIVE

1.8 to 6.5 V input, 800 kHz, 95% efficient step-down controller, 20 uA, SOT-23

A newer version of this product is available

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TPS62A02 ACTIVE 2.5V to 5.5V input, 2A high-efficiency step-down converter in SOT563 and SOT23 packages High efficiency DC/DC converter with small solution size

Product details

Vin (min) (V) 1.8 Vin (max) (V) 6.5 Iout (max) (A) 3 Operating temperature range (°C) -40 to 85 Control mode Hysteretic Rating Catalog Vout (min) (V) 1.2 Vout (max) (V) 6.5 Features Enable Iq (typ) (µA) 20 Duty cycle (max) (%) 100 Number of phases 1
Vin (min) (V) 1.8 Vin (max) (V) 6.5 Iout (max) (A) 3 Operating temperature range (°C) -40 to 85 Control mode Hysteretic Rating Catalog Vout (min) (V) 1.2 Vout (max) (V) 6.5 Features Enable Iq (typ) (µA) 20 Duty cycle (max) (%) 100 Number of phases 1
SOT-23 (DBV) 6 8.12 mm² 2.9 x 2.8
  • Step-Down Controller for Applications With up to 95% Efficiency
  • 1.8-V to 6.5-V Operating Input Voltage Range
  • Adjustable Output Voltage Range From 1.2 V to VI
  • High Efficiency Over a Wide Load Current Range
  • 100% Maximum Duty Cycle for Lowest Dropout
  • Internal Softstart
  • 20-µA Quiescent Current (Typical)
  • Overcurrent Protected
  • Available in a SOT23 Package
  • APPLICATIONS
    • USB Powered Peripherals
    • Organizers, PDAs, and Handheld PCs
    • Low Power DSP Supply
    • Digital Cameras
    • Hard Disk Drives
    • Portable Audio Players

  • Step-Down Controller for Applications With up to 95% Efficiency
  • 1.8-V to 6.5-V Operating Input Voltage Range
  • Adjustable Output Voltage Range From 1.2 V to VI
  • High Efficiency Over a Wide Load Current Range
  • 100% Maximum Duty Cycle for Lowest Dropout
  • Internal Softstart
  • 20-µA Quiescent Current (Typical)
  • Overcurrent Protected
  • Available in a SOT23 Package
  • APPLICATIONS
    • USB Powered Peripherals
    • Organizers, PDAs, and Handheld PCs
    • Low Power DSP Supply
    • Digital Cameras
    • Hard Disk Drives
    • Portable Audio Players

The TPS6420x are nonsynchronous step-down controllers that are ideally suited for systems powered from a 5-V or 3.3-V bus or for applications powered from a 1-cell Li-Ion battery or from a 2- to 4-cell NiCd, NiMH, or alkaline battery. These step-down controllers drive an external P-channel MOSFET allowing design flexibility. To achieve highest efficiency over a wide load current range, this controller uses a minimum on time, minimum off time control scheme and consumes only 20-µA quiescent current. The minimum on time of typically 600 ns (TPS64203) allows the use of small inductors and capacitors. When disabled, the current consumption is reduced to less than 1 µA. The TPS6420x is available in the 6-pin SOT23 (DBV) package and operates over a free air temperature range of –40°C to 85°C.

The TPS6420x are nonsynchronous step-down controllers that are ideally suited for systems powered from a 5-V or 3.3-V bus or for applications powered from a 1-cell Li-Ion battery or from a 2- to 4-cell NiCd, NiMH, or alkaline battery. These step-down controllers drive an external P-channel MOSFET allowing design flexibility. To achieve highest efficiency over a wide load current range, this controller uses a minimum on time, minimum off time control scheme and consumes only 20-µA quiescent current. The minimum on time of typically 600 ns (TPS64203) allows the use of small inductors and capacitors. When disabled, the current consumption is reduced to less than 1 µA. The TPS6420x is available in the 6-pin SOT23 (DBV) package and operates over a free air temperature range of –40°C to 85°C.

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Technical documentation

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Type Title Date
* Data sheet SOT23 Step-Down Controller. datasheet 17 Jun 2003
White paper Understanding Functional Safety FIT Base Failure Rate Estimates per IEC 62380 and SN 29500 (Rev. A) PDF | HTML 30 Apr 2024
Application note Using Ceramic Output Capacitors With The TPS6420x Buck Controllers (Rev. B) 11 Mar 2010
Application note 5 A Buck Converter Using the TPS6420x Family of Step Down Controllers 17 Jun 2004

Design & development

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Evaluation board

TPS64202EVM-023 — TPS64202 Evaluation Module (3.3V @ 2A)

The TPS64202EVM-023 is an evaluation tool for the TPS64202 inductive step-down controller in SOT-23 package which can supply voltages down to 1.2V from a 1.8-V to 6.5-V input. The TPS64202EVM-023 uses a TPS64202 adjustable output step-down controller and the appropriate external components to (...)

User guide: PDF
Not available on TI.com
Calculation tool

SLVC038 Design Spreadsheet for the TPS6420x

Supported products & hardware

Supported products & hardware

Products
AC/DC & DC/DC controllers (external FET)
TPS64200 1.8 to 6.5 V input, 350 kHz, 95% efficient step-down controller, 20 uA, SOT-23 TPS64201 1.8 to 6.5 V input, 450 kHz, 95% efficient step-down controller, 20 uA, SOT-23 TPS64202 1.8 to 6.5 V input, 550 kHz, 95% efficient step-down controller, 20 uA, SOT-23 TPS64203 1.8 to 6.5 V input, 800 kHz, 95% efficient step-down controller, 20 uA, SOT-23
Package Pins CAD symbols, footprints & 3D models
SOT-23 (DBV) 6 Ultra Librarian

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