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ACT4070YH

Features: `  3A Output Current`  Up to 95% Efficiency`  4.5V to 30V Input Range`  6A Shutdown Supply Current`  400kHz Switching Frequency`  Adjustable Output Voltage`  Cycle-by-Cycle Current Limit Protection`  Thermal Shutdown Protect...

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SeekIC No. : 004267989 Detail

ACT4070YH: Features: `  3A Output Current`  Up to 95% Efficiency`  4.5V to 30V Input Range`  6A Shutdown Supply Current`  400kHz Switching Frequency`  Adjustable...

ACT4070YH Data Sheet

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Part Number:
ACT4070YH
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:

`  3A Output Current
`  Up to 95% Efficiency
`  4.5V to 30V Input Range
`  6A Shutdown Supply Current
`  400kHz 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 -0.3 to +34 V
EN to G -0.3 to VIN + 0.3 V
SW to G -1 to VIN + 1 V
BS to SW -0.3 to +8 V
FB, COMP to G -0.3 to V
Continuous SW Current Internally limited A
Junction to Ambient Thermal Resistance (JA) 46 °C/W
Maximum Power Dissipation 1.8 w
Operating Junction Temperature -40 to 150 °C
Storage Temperature -55 to 150 °C
Lead Temperature (Soldering, 10 sec) 300 °C
1: 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 ACT4070 is a current-mode step-down DC/DC converter that generates up to 3A output current at 400kHz switching frequency. The device utilizes Active-Semi's proprietary ISOBCD30 process for operation with input voltage up to 30V.

Consuming only 6A in shutdown mode, the ACT4070 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 ACT4070 is available in SOP-8/EP exposed pad package and requires very few external devices for operation.




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