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LP3965S-3.3
Public Made by Adomby adom
HGSEMI Voltage Regulators - Linear, Low Drop Out (LDO) Regulators, TO-263-5. 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
markdownLP3965S-3.3
HGSEMI · Voltage Regulators - Linear, Low Drop Out (LDO) Regulators · TO-263-5
LP3965S-3.3 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 | SD | input | Shutdown control input: the output turns off when it is pulled low to 0 to 0.2V and on when it is high at VIN-0.3V, with the survival range stated as -0.3V to VIN+0.3V. |
| 2 | VIN | power_in | Input supply pin, operating from 2.5V to 7.0V, with the minimum at the greater of VOUT(NOM)+VDROPOUT or 2.5V. |
| 3 | GND | power_in | Ground reference pin for the regulator. |
| 4 | VOUT | power_out | Regulated output voltage pin, rated for 1.5A DC maximum operating current and with a survival range of -0.3V to +7.5V. |
| 5 | SENSE/ADJ | input | Remote sense pin that improves load regulation at remote loads, with a maximum voltage of VOUT+0.3V; on the ADJ version this pin is the output adjust pin. |
| 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 (PMIC) |
| 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 Tolerance (TJ=25°C) | VO | -1.5 | 0 | 1.5 | % | 10 mA ≤ IL ≤ 1.5A, VOUT +1 ≤ VIN ≤ 7.0V; standard typeface (TJ=25°C) | 7 |
| Output Voltage Tolerance (full operating temperature range) | VO | -3 | 3 | % | 10 mA ≤ IL ≤ 1.5A, VOUT +1 ≤ VIN ≤ 7.0V; boldface (full operating temperature range) | 7 | |
| Output Voltage Line Regulation | ∆VOL | 0.02 | 0.06 | % | VOUT+1V<VIN<7.0V | 7 | |
| Output Voltage Load Regulation | ∆VO/∆IOUT | 0.04 | 0.09 | % | 10 mA < IL < 1.5 A | 7 | |
| Dropout Voltage (TJ=25°C) | VIN - VOUT | 38 | 45 | mV | IL = 150 mA; standard typeface (TJ=25°C) | 7 | |
| Dropout Voltage (full operating temperature range) | VIN - VOUT | 55 | mV | IL = 150 mA; boldface (full operating temperature range) | 7 | ||
| Dropout Voltage (TJ=25°C) | VIN - VOUT | 380 | 450 | mV | IL = 1.5 A; standard typeface (TJ=25°C) | 7 | |
| Dropout Voltage (full operating temperature range) | VIN - VOUT | 550 | mV | IL = 1.5 A; boldface (full operating temperature range) | 7 | ||
| Ground Pin Current in Normal Operation (TJ=25°C) | IGND | 4 | 9 | mA | IL = 150 mA; standard typeface (TJ=25°C) | 7 | |
| Ground Pin Current in Normal Operation (full operating temperature range) | IGND | 10 | mA | IL = 150 mA; boldface (full operating temperature range) | 7 | ||
| Ground Pin Current in Normal Operation (TJ=25°C) | IGND | 5 | 14 | mA | IL = 1.5 A; standard typeface (TJ=25°C) | 7 | |
| Ground Pin Current in Normal Operation (full operating temperature range) | IGND | 15 | mA | IL = 1.5 A; boldface (full operating temperature range) | 7 | ||
| Ground Pin Current in Shutdown Mode (TJ=25°C) | IGND | 15 | 25 | µA | VSD ≤ 0.2V (Note 11); standard typeface (TJ=25°C) | 7 | |
| Ground Pin Current in Shutdown Mode (full operating temperature range) | IGND | 75 | µA | VSD ≤ 0.2V (Note 11); boldface (full operating temperature range) | 7 | ||
| Peak Output Current (TJ=25°C) | IO(PK) | 2 | 2.5 | A | Note 2; standard typeface (TJ=25°C) | 7 | |
| Peak Output Current (full operating temperature range) | IO(PK) | 1.7 | A | Note 2; boldface (full operating temperature range) | 7 | ||
| Shutdown Threshold, Output = Low | VSDT | 0 | 0.2 | V | Output = Low | 7 | |
| Storage Temperature Range | -65 | 150 | °C | 6 | |||
| Lead Temperature (Soldering, 10 sec.) | 245 | °C | Soldering, 10 sec. | 6 | |||
| ESD Rating | 2 | kV | Human body model (Note 3) | 6 | |||
| Input Supply Voltage (Survival) | -0.3 | 7.5 | V | Survival | 6 | ||
| Output Voltage (Survival) | -0.3 | 7.5 | V | Survival; Notes 6, 7 | 6 | ||
| Input Supply Voltage (Operating) | 2.5 | 7 | V | Note 12 | 6 | ||
| Shutdown Input Voltage (Operating) | -0.3 | 0.3 | V | Operating | 6 | ||
| Maximum Operating Current (DC) | 1.5 | A | DC | 6 | |||
| Operating Junction Temperature Range | -40 | 125 | °C | 6 | |||
| Junction-to-Ambient Thermal Resistance (TO-263) | θjA | 60 | °C/W | TO263 package, 0.5 in², 1 oz. copper area, no heat sink (derating value, Note 2) | 8 | ||
| Shutdown Threshold (Tsh(t)) | Tsh(t) | 165 | ˚C | Over-temperature shutdown threshold | 7 | ||
| Thermal Shutdown Hysteresis | Tsh(h) | 10 | ˚C | 7 | |||
| Short Circuit Current | ISC | 4.5 | A | Short circuit | 7 | ||
| Turn-off Delay | TdOFF | 20 | µs | IL = 1.5 A | 8 | ||
| Turn-on Delay | TdON | 25 | µs | IL = 1.5 A | 8 | ||
| SD Input Current | ISD | 1 | nA | VSD = VIN | 8 | ||
| Ripple Rejection | PSRR | 60 | dB | VIN = VOUT + 1.5V, COUT = 100uF, VOUT = 3.3V | 8 | ||
| Ripple Rejection | PSRR | 40 | dB | VIN = VOUT + 0.3V, COUT = 100uF, VOUT = 3.3V | 8 | ||
| Output Noise Density | pn(l/f) | 0.8 | µV | f = 120Hz | 8 | ||
| Output Noise Voltage | en | 150 | µV (rms) | BW = 10Hz, 100kHz | 8 | ||
| Output Noise Voltage | en | 100 | µV (rms) | BW = 300Hz, 300kHz | 8 |
CAD (KiCad official)
- Symbol:
LP3965S-3.3 - Footprint:
Package_TO_SOT_SMD:TO-263-5_TabPin6 - 3D model: TO-263-5 (KiCad packages3D, STEP)
- 3D model files:
lp3965s-3-3-etched.step/lp3965s-3-3-etched.glbcarry the MPN laser-etched on the die in a toggleableAdom.LaserEtchgroup (Fusion-ready);lp3965s-3-3.step/lp3965s-3-3.glbare the bare package body.
Provenance
Data extracted from the manufacturer datasheet, not a distributor listing:
- Datasheet: HGSEMI datasheet (14 pp, sha256
24400a68d14cd2cf, retrieved 2026-10-18, tier: lcsc) - Extractor: parts-factory
2.0.0/extract_pins 0.3, primaryclaude-haiku-5-5(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).