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UC3842B SMD PWM Controller IC | Current Mode SMPS Controller | SOP-8 Package
Specifications:
| Parameter | Value |
|---|---|
| Model | UC3842B |
| Package | SOP-8 SMD |
| Controller Type | Fixed-Frequency Current Mode PWM |
| Operating Voltage | 7.6V – 30V |
| Output | Single-ended |
| Frequency | 52 kHz (Typical) |
| Start-up Current | Very Low (<1mA) |
| UVLO | 16V ON / 10V OFF |
| Output Drive | 1A peak |
| Operating Temperature | –40°C to +105°C |
₹24.00 (Incl. GST)
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The UC3842B SMD IC is a high-performance fixed-frequency current-mode PWM controller commonly used in Switch Mode Power Supplies (SMPS).
It provides high stability, fast transient response, low start-up current, and excellent line & load regulation.
Ideal for AC-DC power supplies, battery chargers, LED drivers, DC-DC converters & industrial power control.
The UC3842B integrates Oscillator, PWM Comparator, Current Sensing, Undervoltage Lockout (UVLO), Reference Regulator, and Output Driver in a compact SOP-8 SMD package.
Applications
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SMPS for consumer & industrial electronics
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LED driver power supply
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DC-DC / AC-DC power converters
-
Mobile & laptop chargers
-
Battery charger circuits
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Inverters, UPS & power control systems
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Power supply repair & SMPS service centers
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