AS1383 Boost Converter

200mA, 3.5MHz DC-DC step-up converter


  • Wide input voltage range (2.7V to 5.5V)
  • High efficiency up to 92%
  • Output voltage range: 2.7V to 5.0V (fixed and adjustable variants)
  • Automatic power save operation for light loads
  • Output disconnect during shutdown


  • Ideal for single Li-ion battery powered applications
  • Extended battery life
  • Supports a variety of end applications
  • Cost effective, small package

Product parameters

Input Voltage [V] 2.7 - 5.5
Output Voltage [V] 2.7 - 5.0
Output Current [mA] 200
Efficiency [%] 92
Iq [µA] 25
Architecture Fixed frequency, sync.
fmax [kHz] 3500
Enable/SHDN [/SHDN] Yes
Reset [POK]
Features INSERT, Text ist zu lang
Package 6-pin WL-CSP, 0.4mm pitch

General Description

The AS1383 is a synchronous, high efficiency DC-DC boost converter running at a constant frequency of 3.5MHz. This very high oscillator frequency allows the usage of a low profile inductor with only 1μH. This results in a very small board space requirement for the complete solutions including all external components, making it ideal for use in space-constrained products such as wristbands.

AS1383 generates an output voltage range from 2.7V to 5.0V. In adjustable output voltage variant, the output voltage is selected with an external resistor divider. In fixed output voltage variant the VOUT is pre-programmed in 100mV steps, and the external resistor divider is not needed. AS1383 features a power save mode for light loads and it provides high efficiency across wide load range.

Not Recommended for New Designs
ams AG is discontinuing production of this device.

This product suits for the following applications:

  • USB applications
  • Portable HDMI applications
  • Mobile phones
  • PDAs
  • Portable media players
  • Digital cameras


Title Category Headline Buy
AS1383EvalKit Application Board Evaluation Kit for AS1383

Technical Documents

Type Description Language
Datasheet Document version 1-01 English


Type Description Language
EoL Notification AS2540, AS13xx, AS3668, AS3709, AS371x, AS7620 (issued 2019-Jun) English

Other Information

Type Description Language
Block Diagram AS1383 Block Diagram English