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ACT4075

Features: · 2.5A Output Current· Up to 95% Efficiency· 4.5V to 32V Input Range· 6µA Shutdown Supply Current· 410kHz Switching Frequency· Adjustable Output Voltage· Cycle-by-Cycle Current Limit Protection· Thermal Shutdown Protection· Internal Soft Start Function· Frequency Fold Back at Short...

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SeekIC No. : 004267990 Detail

ACT4075: Features: · 2.5A Output Current· Up to 95% Efficiency· 4.5V to 32V Input Range· 6µA Shutdown Supply Current· 410kHz Switching Frequency· Adjustable Output Voltage· Cycle-by-Cycle Current Limit...

ACT4075 Data Sheet

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Part Number:
ACT4075
Supply Ability:
5000

Price Break

  • Qty
  • 1~5000
  • Unit Price
  • Negotiable
  • Processing time
  • 15 Days
Total Cost: $ 0.00

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Upload time: 2024/11/21

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Product Details

Description



Features:

·  2.5A Output Current
·  Up to 95% Efficiency
·  4.5V to 32V Input Range
·  6µA Shutdown Supply Current
·  410kHz Switching Frequency
·  Adjustable Output Voltage
·  Cycle-by-Cycle Current Limit Protection
·  Thermal Shutdown Protection
·  Internal Soft Start Function
·  Frequency Fold Back at Short Circuit
·  Stability with Wide Range of Capacitors, Including Low ESR Ceramic Capacitors
·  SOP-8/EP (Exposed Pad) Package


Application

·  TFT LCD Monitors or Televisions and HDTV
·  Portable DVD Players
·  Car-Powered or Battery-Powered Equipment
·  Set-Top Boxes
·  Telecom Power Supplies
·  DSL and Cable Modems and Routers


Pinout

Connection Diagram


Specifications

PARAMETER VALUE UNIT
IN to G

EN to G

SW to G

BS to SW

FB, COMP to G

Continuous SW Current

Junction to Ambient Thermal Resistance (JA)

Maximum Power Dissipation

Operating Junction Temperature

Storage Temperature

Lead Temperature (Soldering, 10 sec)		 -0.3 to +34

-0.3 to VIN + 0.3

-1 to VIN + 1

-0.3 to +8

-0.3 to 6

Internally limited

46

1.8

-40 to 150

-55 to 150

300 		V

V

V

V

A

°C/W

W

°C

°C

°C

V
Do not exceed these limits to prevent damage to the device. Exposure to absolute maximum rating conditions for long periods may affect device reliability.


Description

The ACT4075 is a current-mode step-down DC/DC converter that generates up to 2.5A output current at 410kHz switching frequency. The device utilizes Active-Semi's proprietary ISOBCD30 process for operation with input voltage up to 32V.

Consuming only 6A in shutdown mode, the ACT4075 is highly efficient with peak efficiency at 95% when in operation. Protection features include cycle-by-cycle current limit, thermal shutdown, and frequency fold back at short circuit. The device also includes an internal soft start function to prevent overshoot.

The ACT4075 is available in SOP-8/EP exposed pad package and requires very few external devices for operation.




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