LTC3214 - 500mA Camera LED Charge Pump
Datasheet Documentation
Datasheet
Reliability Data
Press Release
cad_symbol
Overview

Features

Typical Application

LTC3214 Typical Application
LTC3214 Typical Application

Description

The LTC3214 is a low noise, high current charge pump DC/DC converter capable of driving high current LEDs at up to 500mA from a 2.9V to 4.5V input. Low external parts count (two flying capacitors, one programming resistor and two bypass capacitors at VIN and CPO) make the LTC3214 ideally suited for small, battery-powered applications.

Built-in soft-start circuitry prevents excessive inrush current during start-up. High switching frequency enables the use of small external capacitors. Output current level is programmed by an external resistor. LED current is regulated using an internal 110mΩ sense resistor. Automatic mode switching optimizes efficiency by monitoring the voltage across the charge pump and switching modes only when dropout is detected. The part is available in a low profile 3mm x 3mm 10-lead DFN package.

Packaging

3x3 DFN-10

LTC3214 Package Drawing
Order Info

Package Variations and Pricing

Part Number Package Pins Temp Price
(1-99)		 Price
(1k)*
LTC3214EDD#PBF DFN 10 E $2.36 $1.65
LTC3214EDD#TRPBF DFN 10 E $1.75
LTC3214EDD DFN 10 E $4.72 $3.30
LTC3214EDD#TR DFN 10 E $3.50
* The USA list pricing shown is for BUDGETARY USE ONLY, shown in United States dollars (FOB USA per unit for the stated volume), and is subject to change. International prices may differ due to local duties, taxes, fees and exchange rates. For volume-specific price or delivery quotes, please contact your local Linear Technology sales office or authorized distributor.

Demo Boards

Linear Technology offers many demo boards free of charge to qualified customers. Contact your local sales office or distributor to inquire about a demo board. Certain demo boards are also available for sale via credit card on this website. Demo boards are for evaluation purposes only. It remains the customer’s responsibility to verify proper and reliable operation in the actual end application.


Part Number Description Price Documentation
DC902A-A LTC3214EDD | Low Noise, High Current LED Flash Charge Pump, Vin = 2.9V - 4.4V, AOT LED Contact Factory
DC902A-B LTC3214EDD | Low Noise, High Current LED Flash Charge Pump, Vin = 2.9V - 4.4V, Lumimicro LED Contact Factory