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CS51220

Features: • Constant Frequency Feed Forward Voltage Mode Control• Programmable Pulse by Pulse Overcurrent Limit• Programmable Foldback Overcurrent Limit with Delay• Soft Hiccup Overcurrent Protection with Programmable Foldback• Frequency Synchronization Output with Pr...

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SeekIC No. : 004316504 Detail

CS51220: Features: • Constant Frequency Feed Forward Voltage Mode Control• Programmable Pulse by Pulse Overcurrent Limit• Programmable Foldback Overcurrent Limit with Delay• Soft Hicc...

CS51220 Data Sheet

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Part Number:
CS51220
Supply Ability:
5000

Price Break

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

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Product Details

Description



Features:

• Constant Frequency Feed Forward Voltage Mode Control
• Programmable Pulse by Pulse Overcurrent Limit
• Programmable Foldback Overcurrent Limit with Delay
• Soft Hiccup Overcurrent Protection with Programmable Foldback
• Frequency Synchronization Output with Programmable Phase Delay
• Synchronization Input to Higher or Lower Frequency
• Direct Connection to External Opto Isolators
• Logic Gate Output Signal
• Accurate VoltSecond Clamping
• Programmable Soft Start
• Logic Input to Disable IC
• Line Overvoltage and Undervoltage Monitoring
• 3.3 V 3% Reference Voltage Output


Pinout

Connection Diagram


Specifications

Rating
Value
Unit
Operating Junction Temperature, TJ
150
°C
Storage Temperature Range, TS
65 to +150
°C
ESD Susceptibility (Human Body Model)
2.0
KV
Thermal Resistance, JunctiontoCase, RJC
28
°C/W
Thermal Resistance, JunctiontoAmbient, RJA
115
°C/W
Lead Temperature Soldering:Reflow:(SMD styles only)(Note1)
230 peak
°C
1. 60 second maximum above 183°C.
*The maximum package power dissipation must be observed.


Description

CS51220 is a single output PWM Controller with switching frequency up to 500 kHz. The feed forward voltage mode control provides excellent line regulation for wide input range. This PWM controller has a synchronization output allowing programmable phase delay. For overcurrent protection, the "soft hiccup" technique effectively limits the output current with maximum flexibility. In addition, this device includes such features as: soft start,pulsebypulse current limit, programmable foldback current limit, voltsecond clamping, maximum duty cycle, overvoltage and undervoltage protection, and synchronization input. The CS51220 is available in 16 SO narrow surface mount package.




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