1. Products
  2. Power Management
  3. LED Driver IC
  4. Inductorless (Charge Pump) LED Drivers
  5. MAX1577Z


Features and Benefits

  • Up to 1.2A Output Drive Capability (800mA Guaranteed)
  • Up to 92% PLED / PBATT Efficiency for Movie Mode
  • Flexible Brightness Control
    • Two-Bit Logic for 100%, 33%, 20%, and Off
    • PWM for 20% to 100%
  • 3% Current Regulation Over Line and Temperature
  • Current or Voltage Regulation for Flash and Backlighting (MAX1577Y)
  • Current Regulation for Flash (MAX1577Z)
  • Low Ripple and EMI
  • 2.7V to 5.5V Supply Voltage Range
  • Soft-Start Limits Inrush Current
  • Output-Voltage Regulation Mode
  • Thermal-Shutdown Protection
  • 8-Pin 3mm x 3mm TDFN Package

Product Details

The MAX1577Y/MAX1577Z charge pumps drive white LEDs, including camera strobes, with regulated current up to 1.2A (guaranteed to 800mA). The very low openloop output resistance allows high flash brightness, even from a low battery input voltage. The adaptive 1x/2x regulating charge-pump operation provides high efficiency (up to 92%) while in movie mode or backlighting. Fast (1MHz) switching allows the use of tiny external components.

The MAX1577Y/MAX1577Z use an external resistor to set the full-scale LED current. Two enable inputs (EN1 and EN2) provide simple on/off control and LED current of 20%, 33%, or 100% full scale. If there is less than 24mV across the external resistor, the output voltage is regulated. The MAX1577Z has fixed 5.1V output-voltage regulation, while the MAX1577Y has logic-controlled output voltage of 3.4V, 4.6V, or 5.1V for backlighting, keyboard, and RGB applications.

The MAX1577Y/MAX1577Z are available in an 8-pin, 3mm x 3mm TDFN package (0.8mm max height).


  • Camera Phones, Cell Phones, and Smartphones
  • LCD Backlights
  • PDAs, Digital Cameras, and Camcorders
  • White LED Flashes, Strobes, and Movie Lights

Product Lifecycle icon-recommended Production

At least one model within this product family is in production and available for purchase. The product is appropriate for new designs but newer alternatives may exist.

Evaluation Kits (1)

Product Recommendations

MAX1577Z Companion Parts

Recommended Related Parts

Design Resources

ADI has always placed the highest emphasis on delivering products that meet the maximum levels of quality and reliability. We achieve this by incorporating quality and reliability checks in every scope of product and process design, and in the manufacturing process as well.  "Zero defects" for shipped products is always our goal.View our quality and reliability program and certifications for more information.

Part Number Material Declaration Reliability Data Pin/Package Drawing CAD Symbols, Footprints & 3D Models
MAX1577ZETA+ Material Declaration Reliability Data Thin Dual Flatpack No Leads, Exposed Pad
MAX1577ZETA+T Material Declaration Reliability Data Thin Dual Flatpack No Leads, Exposed Pad
Wafer Fabrication Data

Sample & Buy

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(*)The 1Ku 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. authorized distributor. Pricing displayed for Evaluation Boards and Kits is based on 1-piece pricing.


Lead Times

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