(China (Mainland))
Product Summary
The LT1244IN8 is a 8-pin, fixed frequency, current mode, pulse width modulator. It has both improved speed and lower quiescent current. It is suitable for off-line converters and DC/DC converters.
Parametrics
Absolute maximum ratings: (1)Supply Voltage: 25V; (2)Output Current: ±1A; (3)Output Energy (Capacitive Load per Cycle): 5mJ; (4)Analog Inputs (Pins 2, 3): -3.3 to 6V; (5)Error Amplifier Output Sink Current: 10mA; (6)Power Dissipation at TA≤25℃ 1W; (7)Storage Temperature Range:-65℃ to 150℃ (8)Lead Temperature (Soldering, 10 sec): 300℃
Features
Features: (1)Low Start-Up Current: < 250μA; (2)50ns Current Sense Delay; (3)Current Mode Operation: To 500kHz; (4)Pin Compatible with UC1842 Series; (5)Undervoltage Lockout with Hysteresis; (6)No Cross-Conduction Current; (7)Trimmed Bandgap Reference; (8)1A Totem Pole Output; (9)Trimmed Oscillator Frequency and Sink Current; (10)Active Pull-Down on Reference and Output During Undervoltage Lockout; (11)High Level Output Clamp: 18V; (12)Current Sense Leading Edge Blanking.
Diagrams
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 LT1244IN8 |
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IC REG CTRLR ISO PWM CM 8-DIP |
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LT1244IN8#PBF |
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IC REG CTRLR ISO PWM CM 8-DIP |
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