(China (Mainland))
Product Summary
The 3842B control integrated circuit provides the features that are necessary to implement off-line or dc-to-dc fixed-frequency current-mode control schemes, with a minimum number of external components. Internally implemented circuit of 3842B include an undervoltage lockout (UVLO) and a precision reference that is trimmed for accuracy at the error amplifier input.
Parametrics
3842B maximum ratings: (1)Supply voltage 30 V max; (2)Analog input voltage range: –0.3 to 6.3 V; (3)Supply current: 30 mA; (4)Output current: ±1 A; (5)Error amplifier output sink current: 10 mA; (6)Package thermal impedance(3) (4): 14 pin, 86 ℃/W; 8 pin 97 ℃/W ; (7)Output energy: 5 μJ; (8)Virtual junction temperature: 150 ℃; (9)Storage temperature range: –65 to 150 ℃; (10)lead Lead temperature Soldering: 300 ℃.
Features
3842B features: (1)Low Start-Up Current (<0.5 mA); (2)Trimmed Oscillator Discharge Current; (3)Current Mode Operation to 500 kHz; (4)Automatic Feed-Forward Compensation; (5)Latching PWM for Cycle-by-Cycle Current Limiting; (6)Internally Trimmed Reference With; (7)Undervoltage Lockout; (8)High-Current Totem-Pole Output; (9)Undervoltage Lockout With Hysteresis; (10)Double-Pulse Suppression.
Diagrams
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 3842 |
Pomona Electronics |
RF Adapters - In Series TYPE N TO TYPE N |
Data Sheet |
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384222-000 |
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CABLE 22AWG TWISTED |
Data Sheet |
Negotiable |
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384223-000 |
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CABLE 22AWG TWISTED |
Data Sheet |
Negotiable |
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384233-000 |
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CABLE 22AWG TWISTED |
Data Sheet |
Negotiable |
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