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Updated at 17/06/2025 10:30:15(UTC+8)
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Description
- DESCRIPTION
- The UC1842/3/4/5 family of control ICs provides the necessary features to implement off-line or DC to DC fixed frequency current mode control schemes with a minimal external parts count. Internally implemented circuits include under-voltage lockout featuring start up current less than 1mA, a precision reference trimmed for accuracy at the error amp input, logic to insure latched
- operation, a PWM comparator which also provides current limit control, and a totem pole output stage designed to source or sink high peak current. The output stage, suitable for driving N Channel MOSFETs, is low in the off state.
- FEATURES
- • Optimized For Off-line And DC To DC Converters
- • Low Start Up Current (<1mA)
- • Automatic Feed Forward Compensation
- • Pulse-by-pulse Current Limiting
- • Enhanced Load Response Characteristics
- • Under-voltage Lockout With Hysteresis
- • Double Pulse Suppression
- • High Current Totem Pole Output
- • Internally Trimmed Bandgap Reference
- • 500khz Operation
- • Low ROError Amp
UC1843J Specifications
| Attribute | Attribute Value |
|---|---|
| Datasheet | Datasheet |
| 3D Model | 3D Model |
| Mounting Style | Through Hole |
| Number of Pins | 8 Pin |
| Case/Package | CDIP |
| Output Voltage | 5.05 V |
| Output Current | 1 A |
| Supply Current | 25 mA |
| Power Dissipation | 1 W |
| Number of Regulated Outputs | 1 Output |
| Rise Time | 50 ns |
| Switching Frequency | 500 kHz |
| Topology | Boost, Flyback, Forward |
| Duty Cycle | 100 % |
| Maximum Duty Cycle | 100 % |
| Fall Time | 50 ns |
| Operating Temperature (Max) | 125 ℃ |
| Operating Temperature (Min) | -55 ℃ |
| Power Dissipation (Max) | 1000 mW |
| Show | |
| Size-Length | 10.16 mm |
| Size-Width | 7.11 mm |
| Size-Height | 4.57 mm |
| Operating Temperature | -55℃ ~ 125℃ |
| Product Lifecycle Status | Active |
| Packaging | Tube |
| RoHS | Non-Compliant |
| Lead-Free Status | Contains Lead |
| ECCN Code | EAR99 |
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- - Carefully inspected and packed by ManyChip warehouse - Vacuum packaging - Anti-static packaging - Shockproof foam
- The terms here are for reference only, the actual terms are subject to the sales quotation. - Please confirm product specifications when ordering. - MOQ refers to the minimum order quantity required to purchase each part. - If you have special ordering instructions, please indicate them on the ordering page. - Inspection (PSI) will be performed prior to shipment.
- - Income Quality Control (IQC), 1000+ qualified dealers. - Chips are tested by authoritative organizations to ensure the quality, authenticity and safety of your device. - Decapsulation control - X-ray control - XRF inspection - Electrical testing - Surface testing -Digital components warehouse, covering an area of 800 square meters, with constant temperature and humidity
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