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ADP1650:  1.5 A LED Flash Driver with I2C-Compatible Interface

Product Details

Product Status:Recommended for New Designs

The ADP1650 is a very compact, highly efficient, single white LED flash driver for high resolution camera phones that improves picture and video quality in low light environments. The device integrates a programmable 1.5 MHz or 3 MHz synchronous inductive boost converter, an I2C-compatible interface, and a 1500 mA current source. The high switching frequency enables the use of a tiny, 1 mm high, low cost, 1 μH power inductor, and the current source permits LED cathode grounding for thermally enhanced, low EMI, and compact layouts.

The LED driver maximizes efficiency over the entire battery voltage range to maximize the input-power-to-LED-power conversion and to minimize battery current draw during flash events. A programmable dc battery current limit safely maximizes LED current for all LED VF and battery voltage conditions.

Two independent TxMASK inputs permit the flash LED current and battery current to reduce quickly during a power amplifier current burst. The I2C-compatible interface enables the pro-grammability of timers, currents, and status bit readback for operation monitoring and safety control.

The ADP1650 comes in a compact 12-ball, 0.5 mm pitch WLCSP package and operates within specification over the full −40°C to +125°C junction temperature range.


Applications
  • Camera-enabled cellular phones and smart phones
  • Digital still cameras, camcorders, and PDAs

FEATURES and BENEFITS

Ultracompact solution

  • Small, 2 mm × 1.5 mm, 12-ball WLCSP package
  • Smallest footprint, 1 mm height, 1 μH power inductor
  • LED current source for local LED grounding
    Simplified routing to/from LED
    Improved LED thermals
  • Synchronous 3 MHz PWM boost converter, no external diode

High efficiency: 90% peak

  • Reduces high levels of input battery current during flash
  • Limits battery current drain in torch mode

I2C programmable

  • Currents up to 1500 mA in flash mode for one LED with ±7% accuracy over all conditions
  • Currents up to 200 mA in torch mode
  • Programmable dc battery current limit (4 settings)
  • Programmable flash timer up to 1600 ms
  • Low VBAT mode to reduce LED current automatically
  • 4-bit ADC for LED VF, die/LED temperature readback
  • See data sheet for additional features

Functional Block Diagram for ADP1650

Documentation

Title Content Type File Type
ADP1650: 1.5 A LED Flash Driver with I2C-Compatible Interface Data Sheet (Rev B, 02/2011) (pdf, 1072 kB) Data Sheets PDF
Isolating Power in Communication Bus and Gate Drive Applications
Starting with a communications application overview of small power options through the process of selecting the right power products this webcast is a great resource for your communications applications designs.
Webcasts WEBCAST
UG-139: Evaluation Board User Guide for ADP1650  (pdf, 1698 kB) User Guides PDF
RAQs index Rarely Asked Questions HTML
Glossary of EE Terms Glossary HTML

Design Tools,Models,Drivers & Software

Title Content Type File Type
ADP1650 LED Flash Linux Driver Device Drivers HTML

Evaluation Kits & Symbols & Footprints

Evaluation Boards & KitsView the Evaluation Boards and Kits page for documentation and purchasing

Symbols and Footprints— Analog Devices offers Symbols & Footprints which are compatible with a large set of today’s CAD systems for broader and easier support.

SampleSample & Buy

Price, packaging, availability

ADP1650 Model Options
Model Package Pins Temp.
Range
Packing,
Qty
Price*(100-499) Price*1000 pcs RoHS View PCN/ PDN Check Inventory/
Purchase/Sample
ADP1650ACBZ-R7 Status: Production CHIPS W/SOLDER BUMPS/WLCSP 12 Ind Reel, 3000 - $0.95 Y  Material Info PCN Purchase Sample
ADP1650ACPZ-R7 Status: Production LFCSP:LEADFRM CHIP SCALE 10 Ind Reel, 1500 - $0.95 Y  Material Info PCN Purchase Sample
Price Table Help

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 Analog Devices, Inc. sales office or authorized distributor. Pricing displayed for Evaluation Boards and Kits is based on 1-piece pricing.

ADP1650 Evaluation Board
Model Description Price RoHS View PCN/ PDN Check Inventory/
Purchase/Sample
ADP1650CB-EVALZ Status: Production Evaluation Board $49.00 Yes -
ADP1650CP-EVALZ Status: Production Evaluation Board - Yes - Contact ADI

Pricing displayed is based on 1-piece. The USA list pricing shown is for budgetary use only, shown in United States dollars (FOB USA per unit), and is subject to change. International prices may vary due to local duties, taxes, fees and exchange rates.

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