(China (Mainland))
Product Summary
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.
Parametrics
Absolute Maximum Ratings:
(1)Supply voltage, VCC: 30 V;
(2)Output current, IO: ±1.5 A;
(3)Input voltage at overcurrent detection pin, VIN(IS): -0.3 to 4 V;
(4)Input voltage at FB pin, VIN(FB): 4 V;
(5)Input current at CS pin, IIN(CS): 2 mA;
(6)Total power dissipation (Ta = 25℃), PD: 800 mW;
(7)Operating temperature, TOPR: -25 to 85℃;
(8)Storage temperature range, TSTG: -65 to 150℃;
(9)Junction temperature, Tj: +125℃
Features
(1)Built-in drive circuits for direct connection power MOSFET (lO=±1.5A);
(2)Wide operating frequency range (5kHz ~ 600kHz);
(3)Pulse by pulse over current limiting;
(4)Over load protection;
(5)On/off control by external trigger;
(6)Internal UVLO;
(7)Low standby current (typ. 90uA);
(8)Soft start circuit
Diagrams
<IMG border=0 src="http://www.seekic.com/uploadfile/ic-mfg/20128632119198.jpg">
| Image | Part No | Mfg | Description |  |
Pricing (USD) |
Quantity | ||||||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
 |
 KA7553A |
Fairchild Semiconductor |
Switching Converters, Regulators & Controllers SMPS Controller |
Data Sheet |
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| Image | Part No | Mfg | Description | |
Pricing (USD) |
Quantity | ||||||||||||
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KA75270MTF |
Fairchild Semiconductor |
Supervisory Circuits Voltage Detector 2.7V |
Data Sheet |
Negotiable |
|
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|
KA75270ZTA |
Fairchild Semiconductor |
Supervisory Circuits Voltage Detector 2.7V |
Data Sheet |
Negotiable |
|
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 |
KA75270Z |
Other |
|
Data Sheet |
Negotiable |
|
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KA75360MTF |
Fairchild Semiconductor |
Supervisory Circuits Voltage Detector 3.6V |
Data Sheet |
Negotiable |
|
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|
KA75360ZBU |
Fairchild Semiconductor |
Supervisory Circuits |
Data Sheet |
Negotiable |
|
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|
KA7553A |
Fairchild Semiconductor |
Switching Converters, Regulators & Controllers SMPS Controller |
Data Sheet |
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