Texas Instruments UC2843AD8TR Microcontrollers
30-V, 1-A, 500KHz current mode PWM controller with 8.4V/7.6V UVLO 100% duty cycle 40°C to 85°C 8-SOIC -40 to 85
Same model may have multiple batches, images only for reference.
Manufacturer
Part Number (MPN)
UC2843AD8TR
Base Model
Detailed Description
30-V, 1-A, 500KHz current mode PWM controller with 8.4V/7.6V UVLO 100% duty cycle 40°C to 85°C 8-SOIC -40 to 85
Package
SOIC (D)-8
Lifecycle Status
Active
Datasheet
UC2843AD8TR Datasheet
Quick Jump:
Technical Specifications
Texas Instruments UC2843AD8TR Microcontrollers technical specifications.
General
RoHS
Yes
Regulator Topology
Boost, Buck, Buck boost, Flyback, Forward
Control Mode
Peak current mode
Duty Cycle Max
100
Switching Frequency Max Khz
500
Uvlo Thresholds on Off V
8.4/7.6
Operating Temperature Range C
-40 to 85
Gate Drive Typ a
1
Vin Max V
28
Package
SOIC (D)-8
Alternate Parts Comparison (UC2843AD8TR vs UC2843AD vs UC2843ADW vs UC2843AD8TRG4)
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% |
| Package | SOIC (D)-8 | 14-SOIC (0.154", 3.90mm Width) | 16-SOIC (0.295, 7.50mm Width) | -- |
| Package / Case | -- | 14-SOIC | 16-SOIC | 8-SOIC |
| Operating Temperature | -- | -40°C ~ 85°C (TA) | -40°C ~ 85°C (TA) | -40°C ~ 85°C (TA) |
| Supply Voltage | -- | 7.6V ~ 30V | 7.6V ~ 30V | 7.6V ~ 30V |
| Switching Frequency | -- | Up to 500kHz | Up to 500kHz | Up to 500kHz |
| Lifecycle Status | -- | Active | Active | Active |
| Clock Sync | -- | No | No | No |
| Control Features | -- | Frequency Control | Frequency Control | Frequency Control |
| Number of Outputs | -- | 1 | 1 | 1 |
| Output Configuration | -- | Positive, Isolation Capable | Positive, Isolation Capable | Positive, Isolation Capable |
| Output Phases | -- | 1 | 1 | 1 |
| 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
UC2843BD1R2GonsemiDirectonsemi
Pin YesPkg YesElec Yes
Current Mode PWM Controller, SOIC-8, 250kHz, 30V, 1A
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