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SC1633 - LOW VOLTAGE STEP-UP DC-DC CONVERTER

General Description

The SC1633 is a high efficiency step up DC-DC converter.

Only four external components are required to deliver a fixed voltage of 3V, 3.3V, or 5V.

Efficiency beyond 83% can be easily achieved at 70mA load with 2.2V to 3V input voltages.

Key Features

  • High efficiency 87%.
  • Power-saving shutdown mode (7µA typical).
  • Internal 0.8A switch.
  • 120kHz switching rate.
  • Adjustable switch current limit.
  • On-chip low battery detector.

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Datasheet Details

Part number SC1633
Manufacturer SEMTECH
File Size 181.16 KB
Description LOW VOLTAGE STEP-UP DC-DC CONVERTER
Datasheet download datasheet SC1633 Datasheet

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Other Datasheets by SEMTECH

Part Number Description
SC1630 LOW VOLTAGE MULTI-MODE DC-DC CONVERTER
SC1631 LOW VOLTAGE STEP-UP DC-DC CONVERTER
SC1628 HIGH-EFFICIENCY STEP-UP DC-DC CONVERTER
SC1650 HIGH-VOLTAGE INVERTING DC-DC CONVERTER
SC1652 MICROPOWER INVERTING DC-DC CONVERTER

Full PDF Text Transcription (Reference)

The following content is an automatically extracted verbatim text from the original manufacturer datasheet and is provided for reference purposes only.

View original datasheet text
LOW VOLTAGE STEP-UP DC-DC CONVERTER January 29, 1998 SC1633 TEL:805-498-2111 FAX:805-498-3804 WEB:http://www.semtech.com DESCRIPTION The SC1633 is a high efficiency step up DC-DC converter. Only four external components are required to deliver a fixed voltage of 3V, 3.3V, or 5V. Efficiency beyond 83% can be easily achieved at 70mA load with 2.2V to 3V input voltages. A logic-controlled shutdown mode is provided for power saving. Switch current limit can be programmed with a resistor. The low battery detector can be configured as a linear regulator or a burst mode controller providing extremely low supply current operation. A switching rate of 120kHz reduces the inductor size inductors of 47µH to 150µH inductance are recommended for most applications.