component
UCC2893DR
Public Made by Adomby adom
Texas Instruments DC-DC Controllers, SOIC-16. Pinout cross-checked by two models against the datasheet, 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
markdownUCC2893DR
Texas Instruments · DC-DC Controllers · SOIC-16
UCC2893DR from Texas Instruments, in a SOIC-16. Pinout and pin descriptions extracted from the manufacturer datasheet (extract_pins, cross-checked by a second model); symbol, footprint, and 3D from KiCad-official CAD.
Pinout
| Pin | Name | Type | Function |
|---|---|---|---|
| 1 | RTDEL | input | Resistor to GND programs the turn-on delay of OUT and AUX gate drive outputs for active clamp resonant transitions. |
| 2 | RTON | input | Resistor to GND programs the charge current of the internal timing capacitor, setting oscillator frequency and maximum duty cycle. |
| 3 | RTOFF | input | Resistor to GND programs the discharge current of the internal timing capacitor, working with RTON to set the switching period and duty cycle. |
| 4 | VREF | power_in | 5-V regulated reference output that supplies up to 5 mA external load, requiring 0.1-1 µF bypass capacitor to GND with capacitor on VDD minimum 10 times greater. |
| 5 | SYNC | input | Unidirectional synchronization input for the internal oscillator with minimum pulse width of approximately 50 ns and synchronizing frequency higher than the free-running switching frequency. |
| 6 | GND | power_in | Fundamental analog ground reference for PWM control and programming circuitry, requiring direct connection to PGND at the device with low-impedance external path. |
| 7 | CS | input | Peak current sense input for current mode control with 0.75 V threshold for UCC2893, requiring RC filter between current sense resistor and pin. |
| 8 | RSLOPE | input | Resistor to GND programs the slope compensation current amplitude based on the internal timing capacitor voltage during the main switch on-time. |
| 9 | FB | input | Feedback control voltage input from external error amplifier or optocoupler with useful range of 1.25 V to 4.5 V for pulse width modulation. |
| 10 | SS/SD | input | Soft-start/shutdown capacitor pin charged by internal current programmed by RTON, with useful range 1.25 V to 4.5 V where the lower value between SS/SD and FB is selected. |
| 11 | PGND | power_in | High-current power ground return for OUT and AUX drivers, requiring external connection to GND with minimal loop area and separate low-current ground plane. |
| 12 | AUX | output | High-current gate driver output for auxiliary clamp MOSFET with 2-A source turn-on and 2-A sink turn-off current capability, using active-high logic for N-channel switches. |
| 13 | OUT | output | High-current gate driver output for main N-channel MOSFET with 2-A source turn-on and 2-A sink turn-off current capability, using active-high logic with 10-kΩ resistor to PGND recommended. |
| 14 | VDD | power_in | Power supply input with 12.7 V UVLO turn-on threshold and 8.0 V minimum operating voltage, requiring 1-µF bypass capacitor to PGND and larger energy storage capacitor. |
| 15 | LINEUV | input | Line undervoltage monitor input with 1.27 V threshold and user-programmable hysteresis via external resistor divider controlled by RDEL-programmed current source. |
| 16 | VIN | power_in | High-voltage input to internal P-channel JFET start-up device (UCC2891/3 only) providing approximately 15 mA charge current to VDD with up to 110 V maximum rating, turning off above 13.5 V. |
Key specifications
| Parameter | Value |
|---|---|
| Manufacturer | Texas Instruments |
| Package | SOIC-16 |
| Category | Power Supply Chip |
| Pins | 16 |
CAD (KiCad official)
- Symbol:
UCC2893DR - Footprint:
Package_SO:SOIC-16_3.9x9.9mm_P1.27mm - 3D model: SOIC-16 (KiCad packages3D, STEP)
- 3D model files:
ucc2893dr-etched.step/ucc2893dr-etched.glbcarry the MPN laser-etched on the die in a toggleableAdom.LaserEtchgroup (Fusion-ready);ucc2893dr.step/ucc2893dr.glbare the bare package body.
Provenance
Data extracted from the manufacturer datasheet, not a distributor listing:
- Datasheet: Texas Instruments datasheet (41 pp, sha256
0b123b68deef52c5, retrieved 2026-10-05, tier: manufacturer) - Extractor: parts-factory
2.0.0/extract_pins 0.3, primaryclaude-haiku-4-5-20251001(text), consensusclaude-sonnet-5-5(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).