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LTC3214

Features: `Low Noise Constant Frequency Operation*`High Efficiency: Up to 94%`Multi-Mode Operation: 1x, 1.5x or 2x Boost Modes`Automatic Mode Switching`High Output Current: Up to 500mA`Tiny Application Circuit (3mm * 3mm DFN Package, All Components <1mm High)`Automatic Soft-Start`Output Disconn...

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SeekIC No. : 004402181 Detail

LTC3214: Features: `Low Noise Constant Frequency Operation*`High Efficiency: Up to 94%`Multi-Mode Operation: 1x, 1.5x or 2x Boost Modes`Automatic Mode Switching`High Output Current: Up to 500mA`Tiny Applicat...

LTC3214 Data Sheet

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Part Number:
LTC3214
Supply Ability:
5000

Price Break

  • Qty
  • 1~5000
  • Unit Price
  • Negotiable
  • Processing time
  • 15 Days
Total Cost: $ 0.00

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Upload time: 2024/5/22

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Product Details

Description



Features:

`Low Noise Constant Frequency Operation*
`High Efficiency: Up to 94%
`Multi-Mode Operation: 1x, 1.5x or 2x Boost Modes
`Automatic Mode Switching
`High Output Current: Up to 500mA
`Tiny Application Circuit (3mm * 3mm DFN Package, All Components <1mm High)
`Automatic Soft-Start
`Output Disconnect
`Open, Shorted LED Protection
`No Inductors
`Internal 110m LED Current Sense Resistor
`3mm * 3mm 10-Lead DFN Package


Application

·LED Torch/Camera Light Supply for Cell Phones, PDAs and Digital Cameras
·General Lighting and/or Flash/Strobe Applications


Pinout

Connection Diagram


Specifications

VIN to GND ............................................... 0.3V to 5.5V
CPO to GND ............................................. 0.3V to 5.5V
EN ................................................... 0.3V to VIN + 0.3V
ICPO, IILED (Note 2) ............................................. 600mA
CPO Short-Circuit Duration ............................ Indefinite
Storage Temperature Range ...............65°C to 125°C
Operating Temperature Range (Note 3) .40°C to 85°C


Description

The LTC®3214 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 of LTC3214 is programmed by an external resistor. LED current is regulated using an internal 110m 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.




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