Tiny LED Driver Reference Design

(ACTIVE) PMP30284

Description & Features

Technical Documents

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Key Document

Description

This reference design contains a unique LED Driver to be supplied out of a single or a dual cell lithium ion battery. The circuit in SEPIC topology accepts input voltages as low as 1.8V to 8.4V. The TPS43000 was chosen for handling  low input voltages. Current regulation is provided with a shunt resistor and operational amplifier (TLV6001U) circuit.

Features
  • Works with an input voltage range of 1.8V to 8.4V
  • Reasonable efficiency
  • For LED with 0.8A current and about 3.3V output voltage
  • Total board size is 47mm x 47mm
  • The design is built and tested

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Schematic/Block Diagram

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Design Guide

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Design Files

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Bill of Materials (BOM)

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Parametrics
 PMP30284.1
(Output Voltage 1)
Vin (Min) (V)1.8
Vin (Max) (V)8.4
Vout (Nom) (V)3.3
Iout (Max) (A).8
Output Power (W)2.64
Isolated/Non-IsolatedNon-Isolated
Input TypeDC
TopologySepic- Synchronous

TI Devices (4)

Order samples, get tools and find more information on the TI products in this reference design.

Part Number Name Product Family Sample & Buy Design Kits & Evaluation Modules
CSD16340Q3  25V, N Channel NexFET™ Power MOSFET  MOSFETs  Sample & Buy Not Available
CSD25404Q3  –20 V P-Channel NexFET Power MOSFET  MOSFETs  Sample & Buy Not Available
TLV6001  1-MHz, Low-Power Operational Amplifier for Cost-Sensitive Systems  Operational amplifiers (op amps)  Sample & Buy View Design Kits & Evaluation Modules
TPS43000  Multi-Topology (buck, boost, sepic) High Frequency DC/DC Controller  Buck-boost & inverting  Sample & Buy View Design Kits & Evaluation Modules

CAD/CAE symbols

Part # Package | Pins CAD File (.bxl) STEP Model (.stp)
CSD16340Q3 VSON-CLIP (DQG)| 8 Download Download
CSD25404Q3 VSON-CLIP (DQG)| 8 Download Download
TLV6001 Download
Download
TPS43000 Download Download

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Technical Documents

View the Important Notice for TI Designs covering authorized use, intellectual property matters and disclaimers.

User guides (1)
Title Abstract Type Size (KB) Date
PDF 622 21 Aug 2017
Design files (6)
Title Abstract Type Size (KB) Date
ZIP 32 21 Aug 2017
ZIP 572 21 Aug 2017
PDF 519 21 Aug 2017
PDF 86 21 Aug 2017
PDF 79 21 Aug 2017
PDF 99 21 Aug 2017

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