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KA7552A Datasheet

Part Number KA7552A
Manufacturers ON Semiconductor
Logo ON Semiconductor
Description SMPS Controller
Datasheet KA7552A DatasheetKA7552A Datasheet (PDF)

KA7552A/KA7553A SMPS Controller 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 Description The KA7552A/KA7553A are switching power control IC for wide operating frequency range. The internal circuits include pulse by pulse current limiting, pr.

  KA7552A   KA7552A






Part Number KA7552A
Manufacturers Fairchild
Logo Fairchild
Description SMPS Controller
Datasheet KA7552A DatasheetKA7552A Datasheet (PDF)

www.fairchildsemi.com KA7552A/KA7553A SMPS Controller 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 Description The KA7552A/KA7553A are switching power control IC for wide operating frequency range. The internal circuits include pulse by puls.

  KA7552A   KA7552A







SMPS Controller

KA7552A/KA7553A SMPS Controller 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 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. 8-DIP 1 Internal Block Diagram BIAS OFF (4V) 4.3K 2.8V + - CS 8 0.56 ~ 0.42V + _ + 7V - CT RT 7 1 10uA OSC UVLO 3.6V 2.4V 1.9V + - PWM 0.24V _ + O.C.P R Q S VCC 6 5 OUTPUT 2 3 FB IS(+) 4 GND ©2004 Semiconductor Components Industries, LLC. October-2017, Rev. 2 Publication Order Number: KA7553A/D KA7552A/KA7553A Absolute Maximum Ratings Parameter Supply voltage Output current Input voltage at overcurrent detection pin Input voltage at FB pin Input current at CS pin Total power dissipation (Ta = 25°C) Operating temperature Storage temperature range Junction temperature Electrical Characteristics Symbol VCC IO VIN(IS) VIN(FB) IIN(CS) PD TOPR TSTG Tj Value 30 ±.


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