component
UC2825DWTR
Public Made by Adomby adom
Texas Instruments DC-DC Converters, SOIC-16-300mil. 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
markdownUC2825DWTR
Texas Instruments · DC-DC Converters · SOIC-16-300mil
UC2825DWTR 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 | INV | input | Inverting input of the error amplifier; absolute maximum analog input range -0.3V to 7V. |
| 2 | NI | input | Non-inverting input of the error amplifier; absolute maximum analog input range -0.3V to 7V. |
| 3 | E/A Out | output | Error amplifier output used with external compensation network; output current limited to 5mA max, sink current 1-2.5mA and source current -0.5 to -1.3mA typical. |
| 4 | Clock | bidirectional | Oscillator clock output pin, also used for synchronizing multiple devices; clock output current limited to -5mA max, clock high 3.9-4.5V and low 2.3-2.9V typical. |
| 5 | RT | passive | Oscillator timing pin; external resistor to ground sets the oscillator charging current (rated -5mA max) and, with CT, the switching frequency; analog input range -0.3V to 7V. |
| 6 | CT | passive | Oscillator timing capacitor pin; external capacitor to ground sets switching frequency together with RT, ramp valley 1.0V and peak 2.8V typical; analog input range -0.3V to 6V. |
| 7 | Ramp | input | PWM comparator ramp input for voltage-mode ramp or current-mode current-sense signal; bias current -5µA max; analog input range -0.3V to 7V. |
| 8 | Soft Start | passive | Soft-start and maximum duty-cycle clamp pin; charges with 3-20µA typical current and can sink up to 20mA (discharge 1mA) to reset; analog input range -0.3V to 6V. |
| 9 | ILIM/SD | input | Current-limit/shutdown input; pulse-by-pulse current-limit threshold 1.0V typical and TTL-compatible shutdown threshold 1.40V typical; analog input range -0.3V to 6V. |
| 10 | Gnd | power_in | Signal ground reference for the low-power control circuitry, separate from the power ground return. |
| 11 | Out A | output | Totem-pole output A capable of sourcing/sinking 0.5A DC (2A peak, 0.5µs pulse) to drive a power MOSFET gate; high level 13.0-13.5V typical. |
| 12 | Pwr Gnd | power_in | Power ground return for the output driver stage, kept separate from signal ground to isolate switching noise. |
| 13 | VC | power_in | Supply voltage for the output totem-pole drivers, rated up to 30V absolute maximum; should be locally bypassed. |
| 14 | Out B | output | Totem-pole output B capable of sourcing/sinking 0.5A DC (2A peak, 0.5µs pulse) to drive a power MOSFET gate; high level 13.0-13.5V typical. |
| 15 | VCC | power_in | Main chip supply voltage, rated up to 30V absolute maximum; UVLO start threshold 9.2V typical with 0.8V hysteresis, start-up current 1.1mA typical. |
| 16 | VREF | power_out | 5.1V (5.00-5.20V typical) reference output capable of sourcing at least 10mA with short-circuit current of -15 to -100mA, used to bias external circuitry. |
Key specifications
| Parameter | Value |
|---|---|
| Manufacturer | Texas Instruments |
| Package | SOIC-16-300mil |
| Category | Power Management (PMIC) |
| Pins | 16 |
CAD (KiCad official)
- Symbol:
UC2825DWTR - Footprint:
Package_SO:SOIC-16_3.9x9.9mm_P1.27mm - 3D model: SOIC-16-300mil (KiCad packages3D, STEP)
- 3D model files:
uc2825dwtr-etched.step/uc2825dwtr-etched.glbcarry the MPN laser-etched on the die in a toggleableAdom.LaserEtchgroup (Fusion-ready);uc2825dwtr.step/uc2825dwtr.glbare the bare package body.
Provenance
Data extracted from the manufacturer datasheet, not a distributor listing:
- Datasheet: Texas Instruments datasheet (23 pp, sha256
62f4a96c2122b13d, 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).