# LM29302AS

**HGSEMI** · Linear Voltage Regulators (LDO) · TO-263-5

LM29302AS from HGSEMI, 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 | ENABLE | input | CMOS/TTL-compatible control input where logic high enables the regulator and logic low (0.8V max) shuts it down, with an input range of -0.3V to VIN and a high threshold of 2.4V min. |
| 2 | INPUT | power_in | Supplies the current to the output power device, with a maximum operating input voltage of 26V. |
| 3 | GND | power_in | Ground pin, and the TAB is also connected internally to the IC's ground. |
| 4 | OUTPUT | power_out | Regulator output voltage, programmable between 1.25V and 25V by the external resistor divider. |
| 5 | ADJUST | input | Adjustable regulator feedback input that connects to the resistor voltage divider placed from OUTPUT to GND to set the output voltage, with a 1.240V typical reference. |
| 6 | EP | passive | Exposed pad (from the footprint; not named in the datasheet pin table). |

## Key specifications

| Parameter | Value |
|---|---|
| Manufacturer | HGSEMI |
| 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 |
|---|---|---|---|---|---|---|---|
| Output voltage |  | -1 |  | 1 | % | IOUT = 10mA | 5 |
| Output voltage over load and line |  | -2 |  | 2 | % | 10mA ≤ IOUT ≤ IFL, (VOUT + 1V) ≤ VIN ≤26V | 5 |
| Line regulation |  |  | 0.06 | 0.5 | % | IOUT = 10mA, (VOUT + 1V) ≤ VIN ≤26V | 5 |
| Load regulation |  |  | 0.2 | 1 | % | VIN = VOUT + 5V, 10mA ≤ IOUT ≤ 1.5A | 5 |
| Output voltage temperature coefficient | ΔVO/ΔT |  | 20 | 100 | ppm/°C |  | 5 |
| Dropout voltage (LM29300) |  |  | 80 | 175 | mV | ΔVOUT = -1%; IOUT = 100mA | 5 |
| Dropout voltage (LM29300) |  |  | 370 | 600 | mV | ΔVOUT = -1%; IOUT = 3A | 5 |
| Ground current (LM29300) |  |  | 10 | 35 | mA | IOUT = 1.5A, VIN = VOUT + 1V | 5 |
| Current limit (LM29300) |  |  | 4.5 | 5 | A | VOUT = 0V | 5 |
| Reference voltage |  | 1.228 | 1.24 | 1.252 | V | LM29xx2/29xx3 | 5 |
| Reference voltage |  | 1.215 |  | 1.265 | V | LM29xx2/29xx3 | 5 |
| Reference voltage |  | 1.203 |  | 1.277 | V | LM29xx2/29xx3 | 5 |
| Adjust pin bias current |  |  | 40 | 80 | nA |  | 5 |
| Adjust pin bias current |  |  |  | 120 | nA |  | 5 |
| ENABLE input logic voltage Low (OFF) |  |  |  | 0.8 | V |  | 6 |
| ENABLE input logic voltage High (ON) |  | 2.4 |  |  | V |  | 6 |
| Enable pin input current |  |  | 100 | 750 | µA | VEN = 26V | 6 |
| Enable pin input current |  |  | 0.7 | 4 | µA | VEN = 0.8V | 6 |
| Regulator output current in shutdown |  |  | 10 | 500 | µA | VEN ≤ 0.8V, VIN ≤ 26V, VOUT = 0 | 6 |
| Input supply voltage (VIN) | VIN |  |  | 26 | V |  | 4 |
| Enable input voltage (VEN) | VEN | -0.3 |  |  | V |  | 4 |
| Lead temperature (soldering) |  |  |  | 245 | °C | TO-263/TO-220, soldering 10 sec. | 4 |
| Storage temperature range |  | -65 |  | 150 | °C |  | 4 |
| Operating junction temperature | TJ | -40 |  | 125 | °C |  | 4 |
| Maximum operating input voltage | VIN |  |  | 26 | V |  | 4 |
| Adjustable output voltage | VOUT | 1.25 |  | 25 | V | Adjustable version | 16 |
| Minimum load current |  | 7 |  |  | mA | Device 29300 | 17 |
| Reference voltage temperature coefficient |  |  | 20 |  | ppm/°C |  | 6 |
| Adjust pin bias current temperature coefficient |  |  | 0.1 |  | nA/°C |  | 6 |
| Dropout voltage (LM29300) |  |  | 250 |  | mV | ΔVOUT = -1%; IOUT = 1.5A | 5 |
| Ground current (LM29300) |  |  | 37 |  | mA | IOUT = 3A, VIN = VOUT + 1V | 5 |
| Ground pin current at dropout (LM29300) |  |  | 1.7 |  | mA | VIN = 0.5V less than specified VOUT; IOUT = 10mA | 5 |
| Output noise voltage (10Hz to 100kHz) |  |  | 400 |  | µV(rms) | IL = 100mA, CL = 10µF | 5 |
| Output noise voltage (10Hz to 100kHz) |  |  | 260 |  | µV(rms) | IL = 100mA, CL = 33µF | 5 |
| Thermal resistance junction-to-case (TO-263) | θJC |  | 3 |  | °C/W |  | 4 |
| Thermal resistance junction-to-ambient (TO-263) | θJA |  | 28 |  | °C/W |  | 4 |

## CAD (KiCad official)

- Symbol: `LM29302AS`
- Footprint: `Package_TO_SOT_SMD:TO-263-5_TabPin6`
- 3D model: TO-263-5 (KiCad packages3D, STEP)
- 3D model files: `lm29302as-etched.step` / `lm29302as-etched.glb` carry the MPN laser-etched on the die in a toggleable `Adom.LaserEtch` group (Fusion-ready); `lm29302as.step` / `lm29302as.glb` are the bare package body.

## Provenance

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

- **Datasheet:** [HGSEMI datasheet](docs/lm29302as-datasheet.pdf) (23 pp, sha256 `0c3fea9e4ca92db5`, retrieved 2026-11-05, tier: lcsc)
- **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/lm29302as-datasheet.pdf)