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ACE714B - Step-up DC/DC Converter Backlight Driver

Description

The ACE714B is a fixed frequency, constant current step-up DC/DC converter ideal for driving LEDs used in backlighting applications on cellular phones, PDAs and digital cameras etc.

Output voltage of up to 28V can be derived, and from a 2.5V input three white LED’s can be driven in series.

Features

  • Input voltage range : 2.5V-5.5V.
  • Output voltage range : up to 28V.
  • Low 104mV feedback voltage.
  • Oscillation frequency : 1.2MHz.
  • Typical Efficiency : 88%.
  • Control : PWM control.
  • Stand-by Current :.

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Datasheet Details

Part number ACE714B
Manufacturer ACE Technology
File Size 335.62 KB
Description Step-up DC/DC Converter Backlight Driver
Datasheet download datasheet ACE714B Datasheet

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Full PDF Text Transcription

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ACE714B Step-up DC/DC Converter Backlight Driver Description The ACE714B is a fixed frequency, constant current step-up DC/DC converter ideal for driving LEDs used in backlighting applications on cellular phones, PDAs and digital cameras etc. Output voltage of up to 28V can be derived, and from a 2.5V input three white LED’s can be driven in series. Luminance of the LED’s is controlled by changing the duty cycle of a PWM signal applied to the CE pin. In addition, an internal MOSFET with an Rds-on of 0.3Ω is used. Allow profile and small board area solution can be achieved using a chip coil and an ultra small ceramic output capacitor. Features  Input voltage range : 2.5V-5.5V  Output voltage range : up to 28V  Low 104mV feedback voltage  Oscillation frequency : 1.
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