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KA7553A - SMPS Controller

Download the KA7553A datasheet PDF. This datasheet also covers the KA7552A variant, as both devices belong to the same smps controller family and are provided as variant models within a single manufacturer datasheet.

General Description

The KA7552A/KA7553A are switching power control IC for wide operating frequency range.

The internal circuits include pulse by pulse current limiting, protection, on/off control by external trigger, low standby current, soft start, and high current totempole output for driving a POWER MOSFET.

Key Features

  • Built-in drive circuits for direct connection power MOSFET (lO = ±1.5A).
  • Wide operating frequency range (5kHz ~ 600kHz).
  • Pulse by pulse over current limiting.
  • Over load protection.
  • On/off control by external trigger.
  • Internal UVLO.
  • Low standby current (typ. 90uA).
  • Soft start circuit.

📥 Download Datasheet

Note: The manufacturer provides a single datasheet file (KA7552A-ONSemiconductor.pdf) that lists specifications for multiple related part numbers.

Datasheet Details

Part number KA7553A
Manufacturer onsemi
File Size 328.47 KB
Description SMPS Controller
Datasheet download datasheet KA7553A 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.

View original datasheet text
KA7552A/KA7553A SMPS Controller Features • Built-in drive circuits for direct connection power MOSFET (lO = ±1.5A) • Wide operating frequency range (5kHz ~ 600kHz) • Pulse by pulse over current limiting • Over load protection • On/off control by external trigger • Internal UVLO • Low standby current (typ. 90uA) • Soft start circuit Description The KA7552A/KA7553A are switching power control IC for wide operating frequency range. The internal circuits include pulse by pulse current limiting, protection, on/off control by external trigger, low standby current, soft start, and high current totempole output for driving a POWER MOSFET. Maximum duty of the KA7552A is 70% and the KA7553A is 46%.