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KA7552

  

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KA7552[PWM Controller]

other part :KA7553  

PWM Controller

Samsung
Samsung

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KA7552A[SMPS Controller]

other part :KA7553A  

Description
The KA7552A/KA7553A are switching power control IC for wide operating frequency range. The internal circuits include pulse by pulse current limiting, protection, on/off control by external trigger, low standby current, soft start, and high current totempole output for driving a POWER
MOSFET. Maximum duty of the KA7552A is 70% and the KA7553A is 46%. When duty is maximum, the input threshold voltage of pin2 & pin8 are not same in KA7552A and KA7553A.

Features
• Built-in drive circuits for direct connection power MOSFET (lO = ±1.5A)
• Wide operating frequency range (5kHz ~ 600kHz)
• Pulse by pulse over current limiting
• Over load protection
• On/off control by external trigger
• Internal UVLO
• Low standby current (typ. 90uA)
• Soft start circuit

Fairchild Semiconductor
Fairchild

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System  Voltage  Analog  Audio  Axial  Battery  Bipolar  Bridge  Camera  Chip  Clock  Color  Connector  Control  Controller  Converter  Counter  Crystal  Decoder  Digital 

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