A8483: 1.2 MHz Step-up Converter for Display Bias Supply

Description

This device is discontinued. Samples are no longer available. Date of status change: June 2, 2014.

The A8483 is a simple five-pin 1.2 MHz current-mode step-up dc-to-dc converter. It includes an integrated 36 V FET and comes in a small 3 x 3 mm 10-lead thermally enhanced MLP/TDFN lead- (Pb) free package. It can be used in many applications (see datasheet circuits). For example, it delivers 15 V at 15 mA with 2.7 V input. Input voltage can range from 2.5 V to 10 V when connected directly to a battery or input rail. Output voltage can be set up to 35 V. Smaller external components and the integrated switch reduce component count and footprint for a variety of applications.

Applications include:

  • OLED bias supply / WLED backlight
  • Portable battery-powered equipment
  • Cellular phones
  • PDAs (Personal Digital Assistant)
  • Camcorders, personal stereos, MP3 players, cameras
  • Mobile GPS system

Top Features

  • Output voltage up to 35 V
  • 2.5 to 10 V input
  • 0.9 to 18 V input with separate bias supply
  • Delivers 15 V at 15 mA with 2.7 V input
  • Constant 1.2 MHz switching frequency provides low noise
  • 350 mA switch current limit
  • 1 µA shutdown current
  • Low-noise PWM/analog dimming

Part Number Specifications and Availability

Part Number Package Type Temperature RoHS
Compliant
Part Composition /
RoHS Data
Comments Samples Check Stock
A8483EEK-T 5-lead MLP -40°C to 85°C -- View Data Discontinued Contact your
local sales rep
Check
Distributor Stock
A8483EEKTR-T 5-lead MLP -40°C to 85°C -- View Data Discontinued Contact your
local sales rep
Check
Distributor Stock
APEK8483EEK-01 DEMO BOARD -40°C to 85°C No -- Discontinued Contact your
local sales rep
Check
Distributor Stock

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Packaging

The A8483 is supplied in a 3 x 3 mm 10-lead thermally enhanced MLP/TDFN lead- (Pb) free package (suffix EK).

EK MLP/TDFN 5 lead

 

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Applications Information

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