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AS998 - Current Mode Controllers

General Description

The AS998/AS998A is an IC intended for use as a PWM controller for switch mode power supplies.

The device is particularly suited as a primary side controller for adapter, printer, peripheral, mobile chargers and desktop auxiliary power supplies.

Key Features

  • such as fixed internal oscillator, internal ramp compensation and current filters all reduce the external support components. Features.
  • Low start-up current 64 µA (Typ) Low running current 2 mA (Typ) Low power light load mode Low power standby when OV is activated Extended commercial operating temperature range: 0 to 105°C On-board fixed frequency oscillator 100 kHz (Typ) Frequency rando.

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Datasheet Details

Part number AS998
Manufacturer Astec
File Size 30.92 KB
Description Current Mode Controllers
Datasheet download datasheet AS998 Datasheet

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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.

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AS998/A PWM Controller SEMICONDUCTOR Preliminary Specification Description The AS998/AS998A is an IC intended for use as a PWM controller for switch mode power supplies. The device is particularly suited as a primary side controller for adapter, printer, peripheral, mobile chargers and desktop auxiliary power supplies. The AS998/AS998A is manufactured in BICMOS technology and exhibits very low start-up and operating power. This allows the device to be suitable in applications where stringent standby or Blue Angel criteria are required. Many of the external functions associated with PWM controllers have been integrated into the AS998/AS998A allowing the external component count to be significantly reduced.