Texas Instruments UC3843AD8TR Microcontrollers
30-V, 1A, 500KHz current mode PWM controller with 8.4V/7.6V UVLO 100% duty cycle 0°C to 70°C 8-SOIC 0 to 70
Same model may have multiple batches, images only for reference.
Manufacturer
Part Number (MPN)
UC3843AD8TR
Base Model
Detailed Description
30-V, 1A, 500KHz current mode PWM controller with 8.4V/7.6V UVLO 100% duty cycle 0°C to 70°C 8-SOIC 0 to 70
Package
SOIC-8
Lifecycle Status
Active
Datasheet
UC3843AD8TR Datasheet
Quick Jump:
Technical Specifications
Texas Instruments UC3843AD8TR Microcontrollers technical specifications.
General
RoHS
Yes
Regulator Topology
Boost, Buck, Flyback, Forward
Control Mode
Current
Duty Cycle Max
100
Switching Frequency Max Khz
500
Uvlo Thresholds on Off V
8.4/7.6
Operating Temperature Range C
0 to 70
Gate Drive Typ a
1
Vin Max V
28
Package
SOIC-8
Alternate Parts Comparison (UC3843AD8TR vs UC3843AD vs UC3843AD8G4 vs UC3843AD8TRG4)
Side-by-side technical parameter comparison of related primary models in this product family.
| This Part | Alternate Parts | Alternate Parts | Alternate Parts | |
|---|---|---|---|---|
| Duty Cycle Max | 100 | 96% | 96% | 96% |
| RoHS | Yes | Yes | -- | -- |
| Control Mode | Current | Current | -- | -- |
| Gate Drive Typ a | 1 | 1 | -- | -- |
| Operating Temperature Range C | 0 to 70 | 0 to 70 | -- | -- |
| Package | SOIC-8 | 14-SOIC (0.154", 3.90mm Width) | -- | -- |
| Regulator Topology | Boost, Buck, Flyback, Forward | Boost, Buck, Flyback, Forward | -- | -- |
| Switching Frequency Max Khz | 500 | 500 | -- | -- |
| Uvlo Thresholds on Off V | 8.4/7.6 | 8.4/7.6 | -- | -- |
| Vin Max V | 28 | 28 | -- | -- |
| Package / Case | -- | 14-SOIC | 8-SOIC | 8-SOIC |
| Mounting Type | -- | Surface Mount | Surface Mount | Surface Mount |
| Action |
Cross Reference
Manufacturer-stated alternates from official cross-reference tools. These are not a guaranteed pin-compatible drop-in. Qualify package, pinout, and electrical limits against the datasheet before a board change. See cross-reference vs drop-in compatible .
Suggested replacements
UC3843BD1R2GonsemiDirectonsemi
Pin YesPkg YesElec Yes
PWM Controller, DC/DC, Current Mode, SOIC-8, 52kHz, 30V
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