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ACT4070

Features: 3A Output CurrentUp to 95% Efficiency4.5V to 30V Input Range6A Shutdown Supply Current400kHz Switching FrequencyAdjustable Output VoltageCycle-by-Cycle Current Limit ProtectionThermal Shutdown ProtectionInternal Soft Start Function Frequency Fold Back at Short CircuitStability with Wide ...

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SeekIC No. : 004267988 Detail

ACT4070: Features: 3A Output CurrentUp to 95% Efficiency4.5V to 30V Input Range6A Shutdown Supply Current400kHz Switching FrequencyAdjustable Output VoltageCycle-by-Cycle Current Limit ProtectionThermal Shut...

ACT4070 Data Sheet

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Part Number:
ACT4070
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: 2024/11/7

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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 6
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
: 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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