Regulator

STR-A6252 Datasheet – Flyback Switching Regulator – Allegro

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Part Number: STR-A6252

Function: Universal-Input/15 W 50 kHz Flyback Switching Regulators

Package: DIP 8 type

Manufacturer: Allegro, Sanken

Image :

STR-A6252 image

Description

The STR-A6251 and STR-A6252 are 50 kHz PWM topology (with ±5% frequency jittering for minimum EMI) regulators specifically designed to satisfy the requirements for increased integration and reliability in flyback converters. They incorporate a primary control and drive circuit with avalanche-rated power MOSFETs. The STR-A6252 features higher allowable switching current and lower on-resistance. The STR-A6251 is also available for 67 kHz operation.

Block Diagram

STR-A6252 datasheet pinout
Features

  1. 50 kHz PWM with ±5% Frequency Jittering Cost Reduction of EMI Noise Filtering
  2. Rugged 650 V Avalanche-Rated MOSFET, Simplified Surge Absorption, No VDSSDerating Required
  3. Choice of rDS(on)(2.8 Ωor 3.95 Ωmaximum)
  4. Auto-Burst Mode for Stand-By Operation or Light Loads Less Transformer Audible Noise
  5. Built-In Leading Edge Blanking
  6. Soft Start and Low Start-Up Current
  7. Start-Up Circuit Disabled in Operation

STR-A6252 Datasheet PDF Download

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AIC1117A-33CT Datasheet – 3.3V, Dropout Adjustable Regulator

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Part Number: AIC1117A-33CT

Function: 1A, Low Dropout Positive Adjustable Regulator

Package: TO-220, TO-252, TO-263, SOT-223 Type

Manufacturer: Analog Intergrations

Pinouts:

AIC1117A-33CT datasheet

 

Description

The AIC1117A is a  low dropout three terminal regulator with 1A output current capability. The output voltage is adjustable with the use of a resistor divider or fixed 2.85V, 3.3V, 5V. Dropout is guaranteed at a maximum of 1.5V at maximum output current. Its low dropout voltage and fast transient response make it ideal for low voltage microprocessor applications. Internal current and thermal limiting provides protection against any overload condition that would create excessive junction temperatures.

Features

1. Dropout Voltage 1.3V at 1A Output Current.
2. Fast Transient Response.
3. Line Regulation typically at 0.015%.
4. Load Regulation typically at 0.1%.
5. Internal Thermal and Current Limiting.

Applications

1. Post Regulator for Switching Supply.
2. Active SCSI Termination.
3. Battery Chargers.
4. Constant-Current Regulators.
5. Motherboard Clock Supplies.

 

Other data sheets are available within the file:

AIC1117A-28CM, AIC1117A-28CT, AIC1117A-50CE, AIC1117A-50CY

AIC1117A-33CT Datasheet PDF Download


AIC1117A-33CT pdf