ams – AS1383: 200mA, 3.5MHz DC-DC Step Up Converter

Power Regulation, Conversion and Management

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 features a power save mode for light loads and it provides high efficiency across wide load range.


• 2.7V to 5.5V input voltage range
• 2.7V to 5.0V fixed and adjustable output voltage
• Output disconnect during shutdown
• 3.5MHz fixed-frequency
• Anti-ringing control minimizes EMI
• Up to 92% power efficiency
• Automatic power save operation for light loads
• 25µA quiescent current
• 6-pin WL-CSP, 0.4mm pitch
• 1k MSRP: $0.25 US