component
UC3846DWTR
Public Made by Adomby adom
Texas Instruments AC-DC Controllers And Regulators, SOIC-16-300mil. Datasheet-verified pinout, KiCad symbol/footprint/3D.
3D Model
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Symbol & Footprint
Schematic Symbol
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PCB Footprint
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Datasheet
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README
markdownUC3846DWTR
Texas Instruments · AC-DC Controllers And Regulators · SOIC-16-300mil
UC3846DWTR from Texas Instruments, in a SOIC-16-300mil. Pinout and pin descriptions extracted from the manufacturer datasheet by ds2sf; symbol, footprint, and 3D from KiCad-official CAD.
Pinout
| Pin | Name | Type | Function |
|---|---|---|---|
| 1 | C/S SS | input | Current-limit/soft-start programming input; maximum sink current 50 mA. |
| 2 | VREF | power_in | 5.1-V bandgap reference output; maximum current ±30 mA. |
| 3 | C/S- | input | Current-sense amplifier inverting input; voltage range -0.3 to +VIN V. |
| 4 | C/S+ | input | Current-sense amplifier non-inverting input; voltage range -0.3 to +VIN V. |
| 5 | E/A+ | input | Error-amplifier non-inverting input; voltage range -0.3 to +VIN V. |
| 6 | E/A- | input | Error-amplifier inverting input; voltage range -0.3 to +VIN V. |
| 7 | COMP | bidirectional | Error-amplifier output and PWM comparator input; maximum current ±5 mA. |
| 8 | CT | input | Oscillator timing capacitor pin for frequency programming. |
| 9 | RT | input | Oscillator timing resistor pin; maximum charging current 5 mA. |
| 10 | Sync | bidirectional | Synchronization input/output for master-slave controller operation; maximum current ±5 mA. |
| 11 | A Out | output | PWM output A; complementary to pin 14 with maximum 500 mA source/sink. |
| 12 | GND | power_in | Ground reference; all signal voltages referenced to this node. |
| 13 | VC | power_in | Collector-emitter supply for output stage; maximum 40 V with 200 µA leakage. |
| 14 | B Out | output | PWM output B; complementary to pin 11 with maximum 500 mA source/sink. |
| 15 | VIN | power_in | Bias supply input; maximum voltage 40 V. |
| 16 | Shutdown | input | External shutdown signal input; threshold 250-400 mV (typical 350 mV). |
Key specifications
| Parameter | Value |
|---|---|
| Manufacturer | Texas Instruments |
| Package | SOIC-16-300mil |
| Category | Power Management (PMIC) |
| Pins | 16 |
CAD (KiCad official)
- Symbol:
UC3846DWTR - Footprint:
Package_SO:SOIC-16_3.9x9.9mm_P1.27mm - 3D model: SOIC-16-300mil (KiCad packages3D, STEP)
- 3D model files:
uc3846dwtr-etched.step/uc3846dwtr-etched.glbcarry the MPN laser-etched on the die in a toggleableAdom.LaserEtchgroup (Fusion-ready);uc3846dwtr.step/uc3846dwtr.glbare the bare package body.
Provenance
Data extracted from the manufacturer datasheet, not a distributor listing:
- Datasheet: Texas Instruments datasheet (24 pp, sha256
0d1e2750f80a16be, retrieved 2026-09-23, tier: lcsc) - Extractor: parts-factory
2.0.0/extract_pins 0.2, primaryclaude-haiku-4-5-20251001(text), consensusclaude-sonnet-5(agreed), guards: pin_guards 0.1: passed. Pins are checked against the footprint pad set and their cited datasheet pages before publish. - CAD: KiCad official libraries (CC-BY-SA 4.0).