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SSP7903P36JR
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Shanghai Siproin Microelectronics Voltage Regulators - Linear, Low Drop Out (LDO) Regulators, TO-252. 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
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Shanghai Siproin Microelectronics · Voltage Regulators - Linear, Low Drop Out (LDO) Regulators · TO-252
SSP7903P36JR from Shanghai Siproin Microelectronics, in a TO-252. 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 | Input supply pin; the datasheet specifies an input voltage range of 2.2 V to 40 V, with an absolute maximum of 40 V. |
| 2 | GND | power_in | Ground reference pin; the datasheet gives no separate electrical limit for this pin. |
| 3 | VOUT | power_out | Regulated output pin, rated for a maximum output current of 1 A with output voltage accuracy of ±2% of VOUT(S). |
Key specifications
| Parameter | Value |
|---|---|
| Manufacturer | Shanghai Siproin Microelectronics |
| Package | TO-252 |
| Category | Power Management (PMIC) |
| Pins | 3 |
Electrical characteristics
Limits as printed in the datasheet (page.json metadata.characteristics carries them as data).
| Parameter | Symbol | Min | Typ | Max | Unit | Conditions | Page |
|---|---|---|---|---|---|---|---|
| Input Voltage (absolute maximum) | VIN | -0.3 | 40 | V | 5 | ||
| Operating Ambient Temperature | Topr | -40 | 85 | ℃ | 5 | ||
| Storage Temperature | Tstg | -40 | 125 | ℃ | 5 | ||
| Power Dissipation (TO252 package) | PD | 1800 | mW | TO 252 package; note (1): increasing welding area increases power dissipation | 5 | ||
| Output Voltage Accuracy (tolerance) | VOUT(S) | -2 | 2 | % | Output voltage accuracy, tolerance ±2% (features list) | 1 | |
| Output Voltage | VOUT(S) | 0.98 | 1.02 | x VOUT(S) | VIN= VOUT(S)+2V, IOUT=10mA; printed as VOUT(S) x0.98 to VOUT(S) x1.02 | 5 | |
| Dropout Voltage (IOUT=1mA) | VDROP | 4 | 8 | mV | IOUT=1mA | 5 | |
| Dropout Voltage (IOUT=1A) | VDROP | 1000 | 1500 | mV | IOUT=1A | 5 | |
| Line Regulation | 0.01 | 0.02 | %/V | VOUT(S)+2V≤VIN≤40V, IOUT=1mA | 5 | ||
| Load Regulation (VOUT(S)≤10V) | ∆VOUT2 | 20 | 80 | mV | VIN=VOUT(S)+2V, 1mA≤IOUT≤300mA, VOUT(S)≤10V | 5 | |
| Temperature Stability | -50 | 50 | ppm/℃ | VIN = VOUT(S)+2V, IOUT=10mA, -40℃≤Ta≤85℃ | 5 | ||
| Quiescent Current (3.0≤VOUT(S)≤40V) | Iq | 1 | 1.6 | 3 | μA | no load, VIN>VOUT(S), 3.0≤VOUT(S)≤40V | 5 |
| Input Voltage | VIN | 2.2 | 40 | V | 5 | ||
| Maximum Output Current | IOUTMAX | 1 | A | 5 | |||
| Current Limit | ILIM | 1.8 | A | VIN= VOUT(S)+2V, VOUT = 0.9 ×VOUT(S) | 5 | ||
| Short Circuit Current | ISHORT | 120 | mA | VIN=VOUT(S)+2V, VOUT and GND is 0Ω | 5 | ||
| Power Supply Rejection Ratio (f=10Hz) | PSRR | 73.2 | dB | f=10Hz, VOUT(S)=3.6V | 5 | ||
| Power Supply Rejection Ratio (f=100Hz) | PSRR | 72.2 | dB | f=100Hz, VOUT(S)=3.6V | 5 | ||
| Power Supply Rejection Ratio (f=1kHz) | PSRR | 54.5 | dB | f=1kHz, VOUT(S)=3.6V | 5 | ||
| Over Temperature Protection | OTP | 145 | ℃ | IOUT=10mA | 5 |
CAD (KiCad official)
- Symbol:
SSP7903P36JR - Footprint:
Package_TO_SOT_SMD:TO-252-2 - 3D model: TO-252 (KiCad packages3D, STEP)
- 3D model files:
ssp7903p36jr-etched.step/ssp7903p36jr-etched.glbcarry the MPN laser-etched on the die in a toggleableAdom.LaserEtchgroup (Fusion-ready);ssp7903p36jr.step/ssp7903p36jr.glbare the bare package body.
Provenance
Data extracted from the manufacturer datasheet, not a distributor listing:
- Datasheet: Shanghai Siproin Microelectronics datasheet (11 pp, sha256
d1763cb71baebbea, 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).