(China (Mainland))
Product Summary
The UC2842AD high performance fixed frequency current mode controller is specifically designed for off-line and DC-to-DC converter applications offering the designer a cost effective solution with minimal external components. The UC2842AD features a trimmed oscillator for precise duty cycle control, a temperature compensated reference, high gain error amplifier, current sensing comparator, and a high current totem pole output ideally suited for driving a power MOSFET.
Parametrics
UC2842AD absolute maximum ratings: (1)Bias and Driver Voltages (Zero Series Impedance, see also Total Device spec), VCC, VC: 30 V; (2)Total Power Supply and Zener Current, (ICC + IZ): 30 mA; (3)Output Current, Source or Sink, IO: 1.0 A; (4)Output Energy (Capacitive Load per Cycle), W: 5.0 uJ; (5)Current Sense and Voltage Feedback Inputs, Vin: -0.3 to + 5.5 V; (6)Error Amp Output Sink Current, IO: 10 mA; (7)Power Dissipation and Thermal Characteristics: D Suffix, Plastic Package: Maximum Power Dissipation @ TA = 25℃: PD=862 mW; Thermal Resistance, Junction.to.Air: RθJA=145℃/W; N Suffix, Plastic Package: maximum Power Dissipation @ TA = 25℃: PD=1.25 W; Thermal Resistance, Junction.to.Air: RθJA=100℃/W; (8)Operating Junction Temperature, TJ: + 150 ℃; (9)Operating Ambient Temperature, TA: 0 to + 70℃; (10)Storage Temperature Range, Tstg: -65 to + 150 ℃.
Features
UC2842AD features: (1)Trimmed Oscillator Discharge Current for Precise Duty Cycle Control; (2)Current Mode Operation to 500 kHz; (3)Automatic Feed Forward Compensation; (4)Latching PWM for Cycle-By-Cycle Current Limiting; (5)Internally Trimmed Reference with Undervoltage Lockout; (6)High Current Totem Pole Output; (7)Undervoltage Lockout with Hysteresis; (8)Low Startup and Operating Current; (9)Direct Interface with ON Semiconductor SENSEFET Products; (10)Pb-Free Packages are Available.cc
Diagrams
| Image | Part No | Mfg | Description |  |
Pricing (USD) |
Quantity | ||||||||||||||||||||||
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 UC2842ADG |
ON Semiconductor |
Other Power Management 52kHz 1A Current PWM w/96% Duty Cycle Max |
Data Sheet |
Negotiable |
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UC2842ADM |
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IC REG CTRLR BST FLYBK ISO 8SOIC |
Data Sheet |
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UC2842ADR2 |
ON Semiconductor |
Other Power Management 52kHz 1A Current PWM |
Data Sheet |
Negotiable |
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UC2842ADR2G |
ON Semiconductor |
Other Power Management 52kHz 1A Current PWM w/96% Duty Cycle Max |
Data Sheet |
Negotiable |
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UC2842ADWTR |
Texas Instruments |
Current Mode PWM Controllers Current-Mode PWM Controller |
Data Sheet |
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UC2842ADWTRG4 |
Texas Instruments |
Current Mode PWM Controllers Current-Mode PWM Controller |
Data Sheet |
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UC2842ADWG4 |
Texas Instruments |
Current Mode PWM Controllers Current-Mode PWM Controller |
Data Sheet |
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UC2842ADW |
Texas Instruments |
Current Mode PWM Controllers Current-Mode PWM Controller |
Data Sheet |
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