# P3596L-AD-TQ5-R

**UTC(Unisonic Tech)** · DC-DC Converters · TO-263-5

P3596L-AD-TQ5-R from UTC(Unisonic Tech), in a TO-263-5. 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 | VIN | power_in | Operating voltage input, with the datasheet giving an operating voltage range of 4.5 ~ 35 V. |
| 2 | Output | output | Switching output, with the datasheet giving an output voltage to ground steady-state limit of -1 V. |
| 3 | GND | power_in | Circuit ground reference for the regulator. |
| 4 | FB | input | Output voltage feedback control, with the datasheet giving a feedback pin voltage rating of -0.3 ~ +20 V. |
| 5 | SD | input | ON/OFF shutdown control, with the datasheet giving an ON/OFF pin input voltage rating of -0.3 ~ +20 V. |
| 6 | EP | passive | Exposed pad (from the footprint; not named in the datasheet pin table). |

## Key specifications

| Parameter | Value |
|---|---|
| Manufacturer | UTC(Unisonic Tech) |
| Package | TO-263-5 |
| Category | Power Management ICs |
| Pins | 6 |

## Electrical characteristics

Limits as printed in the datasheet (page.json `metadata.characteristics` carries them as data).

| Parameter | Symbol | Min | Typ | Max | Unit | Conditions | Page |
|---|---|---|---|---|---|---|---|
| Feedback Voltage (P3596-ADJ) | VFB | 1.193 | 1.23 | 1.267 | V | 4.5V≦VIN≦35V, 0.2A≦ILOAD≦3A, VOUT programmed for 3V | 3 |
| Feedback Bias Current (Adjustable Version Only) | IBIAS |  | 10 | 50 | nA | Adjustable Version Only, VFB=1.3V | 3 |
| Oscillator Frequency | fOSC | 127 | 150 | 173 | kHz | (Note 1) | 3 |
| Saturation Voltage | VSAT |  | 1.16 | 1.4 | V | IOUT=3A (Note 2, 3) | 3 |
| Maximum Duty Cycle |  |  |  | 100 | % | (Note 3) | 3 |
| Minimum Duty Cycle |  | 0 |  |  | % | (Note 4) | 3 |
| Current Limit (Peak Current) | ILIMIT | 3.6 | 4.5 | 6.9 | A | Peak Current (Notes 2, 3) | 3 |
| Output Leakage Current | ILEAK |  |  | 50 | μA | Output=0V (Notes 2, 4) | 3 |
| Output Leakage Current | ILEAK |  | 2 | 30 | mA | Output=-1V, VIN = 40V | 3 |
| Quiescent Current | IQ |  | 5 | 10 | mA | (Note 4) | 3 |
| Standby Quiescent Current | ISTBY |  | 80 | 200 | μA | ON/OFF pin=5V (OFF), VIN = 40V | 3 |
| ON/OFF Pin Logic Input Low Threshold Voltage | VIH |  | 0.6 | 1.3 | V | Regulator ON | 4 |
| ON/OFF Pin Logic Input High Threshold Voltage | VIL | 2 |  |  | V | Regulator OFF | 4 |
| ON/OFF Pin Input Current (high level) | IH |  | 5 | 15 | μA | VLOGIC=2.5V (Regulator OFF) | 4 |
| ON/OFF Pin Input Current (low level) | IL |  | 0.02 | 5 | μA | VLOGIC=0.5V (Regulator ON) | 4 |
| Operating Voltage | VOPR | 4.5 |  | 35 | V |  | 3 |
| Maximum Supply Voltage | VCC |  |  | 40 | V |  | 3 |
| ON/OFF Pin Input Voltage | VON/OFF | -0.3 |  | 20 | V |  | 3 |
| Feedback Pin Voltage | VFB | -0.3 |  | 20 | V |  | 3 |
| Output Voltage to Ground (Steady State) | VOUT | -1 |  |  | V | Steady State | 3 |
| Junction Temperature | TJ |  |  | 150 | °C |  | 3 |
| Ambient Operating Temperature | TOPR | -40 |  | 125 | °C |  | 3 |
| Storage Temperature | TSTG | -65 |  | 150 | °C |  | 3 |
| Junction to Ambient Thermal Resistance (TO-263-5) | θJA |  | 55 |  | °C/W |  | 3 |
| Junction to Case Thermal Resistance (TO-263-5) | θJC |  | 4 |  | °C/W |  | 3 |

## CAD (KiCad official)

- Symbol: `P3596L-AD-TQ5-R`
- Footprint: `Package_TO_SOT_SMD:TO-263-5_TabPin6`
- 3D model: TO-263-5 (KiCad packages3D, STEP)
- 3D model files: `p3596l-ad-tq5-r-etched.step` / `p3596l-ad-tq5-r-etched.glb` carry the MPN laser-etched on the die in a toggleable `Adom.LaserEtch` group (Fusion-ready); `p3596l-ad-tq5-r.step` / `p3596l-ad-tq5-r.glb` are the bare package body.

## Provenance

Data extracted from the manufacturer datasheet, not a distributor listing:

- **Datasheet:** [UTC(Unisonic Tech) datasheet](docs/p3596l-ad-tq5-r-datasheet.pdf) (6 pp, sha256 `af40ca371e29e56e`, retrieved 2026-11-05, tier: manufacturer)
- **Extractor:** parts-factory `2.0.0` / `extract_pins 0.3`, primary `claude-haiku-5-5` (text), consensus `claude-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).

[Datasheet PDF](docs/p3596l-ad-tq5-r-datasheet.pdf)