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Dual DC-DC converter for powering AMOLED display

The STOD03A is a dual DC-DC converter for AMOLED display panels. It integrates a step-up and an inverting DC-DC converter making it particularly suitable for battery operated products, in which the major concern is overall system efficiency. It works in pulse skipping mode during low load conditions and PWM-MODE at 1.5 MHz frequency for medium/high load conditions. The high frequency allows the value and size of external components to be reduced. The Enable pin allows the device to be turned off, therefore reducing the current consumption to less than 1 μA. The negative output voltage can be programmed by an MCU through a dedicated pin which implements single-wire protocol. Soft-start with controlled inrush current limit and thermal shutdown are integrated functions of the device.

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Key Features

  • Step-up and inverter converters
  • Operating input voltage range from 2.3 V to 4.5 V
  • Synchronous rectification for both DC-DC converters
  • 200 mA output current
  • 4.6 V fixed positive output voltages
  • Programmable negative voltage by SWIREfrom - 2.4 V to - 5.4 V
  • Typical efficiency: 85%
  • Pulse skipping mode in light load condition
  • 1.5 MHz PWM mode control switching frequency
  • Enable pin for shutdown mode
  • Low quiescent current: < 1 μA in shutdown mode
  • Soft-start with inrush current protection
  • Overtemperature protection
  • Temperature range: - 40 °C to 85 °C
  • True-shutdown mode
  • Fast discharge outputs of the circuits after shutdown
  • Package DFN12L (3 x 3) 0.6 mm height

Circuit Diagram

Design Resources


Technical Documentation

Product Specifications

Description Version Size
DS6917: Dual DC-DC converter for powering AMOLED displays
3.0 491 KB

Sample & Buy

Part Number Marketing StatusPackagePacking TypeOperating Temperature (min) Operating Temperature (max) Automotive GradeOrder From STUnit Price (US$)*
@ 1000
Distributor AvailabilityRoHS Compliance GradeDownload
Material Declaration**
STOD03ATPURNRNDVFDFPN 12 3x3x0.55Tape And Reel-4085_-1.006Distributor reported inventory date: 2015-01-24
Distributor NameRegionStockMin. order

(*) Suggested Resale Price per unit (USD) for BUDGETARY USE ONLY. For quotes, prices in local currency, please contact your local ST Sales Office or our Distributors
(**) The Material Declaration forms available on may be generic documents based on the most commonly used package within a package family. For this reason, they may not be 100% accurate for a specific device. Please contact our sales support for information on specific devices.
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