AIC3842

Features: `Low Start-Up Current (300A Typical)`Internal Precision Reference.`500KHz Current-Mode Operation.` Pulse-by-Pulse Current Limiting.`Automatic Feed-Forward Compensation.`Optimized for Off-Line and DC/DC Converters.` Undervoltage Lockout with Hysteresis.`Double Pulse Suppression.` High Cur...

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AIC3842 Picture
SeekIC No. : 004279126 Detail

AIC3842: Features: `Low Start-Up Current (300A Typical)`Internal Precision Reference.`500KHz Current-Mode Operation.` Pulse-by-Pulse Current Limiting.`Automatic Feed-Forward Compensation.`Optimized for Off-L...

floor Price/Ceiling Price

Part Number:
AIC3842
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: 2024/11/23

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Product Details

Description



Features:

`Low Start-Up Current (300A Typical)
`Internal Precision Reference.
`500KHz Current-Mode Operation.
` Pulse-by-Pulse Current Limiting.
`Automatic Feed-Forward Compensation.
`Optimized for Off-Line and DC/DC Converters.
` Undervoltage Lockout with Hysteresis.
`Double Pulse Suppression.
` High Current Totem-Pole Output.





Application

·Off-Line Converter.
·DC/DC Converter.





Pinout

  Connection Diagram




Specifications

Supply Voltage (Low Impedance Source ) ................................. 30V
Supply Voltage (ICC<300mA) ....................................... Self Limiting
Output Current .............. ......................................................... ±1A
Output Energy (Capacitive Load) .............................................. 5mJ
Analog Inputs (Pins 2, 3) ......................................... -0.3V to +6.3V
Error Amp Output Sink Current .............................................. 10mA
Operation Temperature Range ................................ -40°C~85°C
Power Dissipation at TA 25°C DIP Package ........................... 1W
SOIC Package .....................................................................725mW
Storage Temperature Range ............................ -65°C to +150°C
Lead Temperature (Soldering, 10 seconds)........................ 300°C

Note 1: All voltages are with respect to Pin 5.
All currents are positive into the specified terminal.






Description

The AIC3842 control IC provides the features that are necessary to implement off-line or DC/DC Converter fixed-frequency current-mode schemes with a minimum number of external components. AIC3842 integrated circuits features an undervoltage lockout (UVLO) with approximately 300mA start-up current, a precision reference trimmed for accuracy at the error amplifier input, high gain error amplifier, current sensing comparator, logic to insure latched operation, and a totem-pole output stage designed to source or sink high peak current. The output stage, suitable for driving N channel MOSFETs, is low in the off state.






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