ADP1653:  Compact, High Efficiency, High Power, Flash/Torch LED Driver with Dual Interface

The ADP1653 is a very compact, high efficiency, high power, camera flash LED driver optimized for cellular phones. The high efficiency and dynamic LED current control of the device improve flash ...More

ADP1653:  Compact, High Efficiency, High Power, Flash/Torch LED Driver with Dual Interface

Product Description

The ADP1653 is a very compact, high efficiency, high power, camera flash LED driver optimized for cellular phones. The high efficiency and dynamic LED current control of the device improve flash brightness and picture quality in dimly lit environments. Efficiency peaks at 92% and is higher than charge pump solutions over the Li-Ion battery range.

The device has a dual-mode interface that is configurable to 2-bit logic or an I2C® interface. The indicator and high power LED currents are programmable with external resistors or through the I2C interface. To maximize overall flash brightness, the ADP1653 offers an input to reduce flash LED current in less than 50 μs, referred to as the Tx mask. Tx masking reduces battery stress by scaling back flash LED current during an RF transmission.

The ADP1653 solution requires only four external components in I2C mode and fits in a 6.4 mm × 7.2 mm space. The part integrates multiple safety features such as soft start, flash timeout, output current limit, thermal protection, and overvoltage protection.

The ADP1653 operates over the −40°C to +125°C junction temperature range.

Applications

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

    • Data Sheet, Rev. B, 9/07

    Features

    • Small 6.4 mm × 7.2 mm solution
    • 2.2 μH power inductor
    • 92% peak efficiency
    • Tx masking within 50 μs
    • 2.1 A, 12 V power switch
    • Pin-selectable interface: 2-bit logic or I2C
    • Programmable flash and torch current
      Up to 200 mA in torch mode
      Up to 500 mA in flash mode
    • Programmable indicator LED current up to 20 mA
    • Programmable timer register: up to 820 ms flash timeout
    • 2.75 V to 5.5 V input voltage range
    • Low noise, 1.2 MHz PWM operation
    • Safety features
      Interrupt output pin
      Fault condition register Short-circuit protection
      Output overvoltage protection
      Thermal overload protection
      Integrated current limit and soft start

    Diagrams

    ADP1653 Diagram
    Typical Application Circuit/PCB Layout for ADP1653

    Specifications

    Input Voltage Range (Vcc) 2.75 to 5.5 V
    Efficency (%) 92%
    LED # 2
    Frequency Range 1.2 MHz
    Package 16-LFCSP

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    Part# Input Voltage Range (Vcc) Vout Adjust Options Iout (max) (mA) Switching Frequency (MHz) Package Price* (1000-4999)
    ADM8843 2.6 to 5.5V - 20 1.5 16-LFCSP $0.50
    ADM8845 2.6 to 5.5V - 30 - 16-LFCSP $0.71
    ADP1610 2.5 to 5.5 V Vin to 12 V 1.2 1.2 8-MSOP $1.12
    ADP1611 2.5 to 5.5 V Vin to 20 V 1.2 1.2 8-MSOP $1.20
    ADP1653 2.75 to 5.5 V - 500 1.2 16-LFCSP $1.47
    ADP5520 2.27 to 5.5 V - 30 1 - $1.66

    * The pricing listed here is provided only for budgetary purposes as recommended list price in U.S. Dollars in the United States ex factor per unit for the stated volume. Pricing displayed for Evaluation Boards and Kits is based on 1-piece pricing.
    ** Pricing is currently unavailable. Click on the product number to see the Product Page for additional information.

    Pricing, Packaging & Availability

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    Package Description
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    For detailed drawings and chemical composition please consult our  Package Site

    Pin Count
    Pin Count is the number of pins, balls, or pads on the device. Pin-out diagrams & pin function descriptions may be found in the datasheet.

    Temperature Range
    This is the acceptable operating range of the device. The various ranges specified are as follows:
    • Commercial: 0 to +70 degrees Celsius
    • Military : -55 to +125 degrees Celsius
    • Industrial: Temperature ranges may vary by model. Please consult the datasheet for more information.
    • Automotive: -40 to +125 degrees Celsius
    Price
    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.

    Production Availability
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    Sample availability may be better than production availability. Please enter samples into your cart to check sample availability.

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    Due to environmental concerns, ADI offers many of our products in lead-free versions. For more information about lead-free parts, please consult our Pb (Lead) free information page.

    *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.
    **Sample availability may be better than production availability. Please enter samples iinto your cart to check sample availability.

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