High Brightness Single LED Driver Reference Design for 1- to 2-Cell AA Battery Applications


Design files


This reference design delivers a high efficiency LED driver circuit with dimming function using the boost converter TPS61021A. The PWM dimming method can be used in one or two cell AA battery input applications, and the analog dimming method can be used in one cell AA battery input applications. PMP15037 can realize the dimming function through the addition of several resistors and one MOSFET into the circuit, making it an cost-effective and high efficiency solution for LED driver applications.

  • One Cell or Two Cell AA Battery Input Voltage Range
  • Supports 0.5A Output Current for One Cell AA Battery Applications and Supports 1A Output Current for Two Cell AA Battery Applications
  • Isolate the Input Battery from the Output Side when Shut Down
  • High Efficiency and Small Solution Size
Output voltage options PMP15037.1
Vin (Min) (V) 1
Vin (Max) (V) 3
Vout (Nom) (V) 3.3
Iout (Max) (A) .5
Output Power (W) 1.65
Isolated/Non-Isolated Non-Isolated
Input Type DC
Topology Boost- Synchronous
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A fully assembled board has been developed for testing and performance validation only, and is not available for sale.

Design files & products

Design files

Download ready-to-use system files to speed your design process.


Test results for the reference design, including efficiency graphs, test prerequisites and more

TIDRU36.PDF (134 K)

Detailed schematic diagram for design layout and components

TIDRU37.PDF (32 K)

Complete listing of design components, reference designators, and manufacturers/part numbers

TIDRU38.PDF (77 K)

Detailed overview of design layout for component placement

TIDRU40.ZIP (521 K)

Files used for 3D models or 2D drawings of IC components

TIDCE55.ZIP (1096 K)

Design file that contains information on physical board layer of design PCB

TIDRU39.PDF (474 K)

PCB layer plot file used for generating PCB design layout


Includes TI products in the design and potential alternatives.

AC/DC & DC/DC converters (integrated FET)

TPS61021A3-A Boost Converter with 0.5-V Ultra Low Input Voltage

Data sheet: PDF | HTML

Technical documentation

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Type Title Date
* Test report PMP15037 Test Results Dec. 06, 2017

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