component
NCP551SN50T1G
Public Made by Adomby adom
onsemi Linear Voltage Regulators (LDO), TSOP-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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Contents
README
markdownNCP551SN50T1G
onsemi · Linear Voltage Regulators (LDO) · TSOP-5
NCP551SN50T1G from onsemi, in a TSOP-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 | Positive power supply input voltage; the Maximum Ratings table limits Vin to 0 to 12 V. |
| 2 | GND | power_in | Power supply ground. |
| 3 | Enable | input | Pulling this input low places the device into low-power standby (disabled); if unused it should be connected to Vin, and the enable threshold is 1.3 V (rising, on) and 0.3 V (falling, off). |
| 4 | N/C | unconnected | No internal connection. |
| 5 | Vout | power_out | Regulated output voltage. |
Key specifications
| Parameter | Value |
|---|---|
| Manufacturer | onsemi |
| Package | TSOP-5 |
| Category | Power Supply Chip |
| Pins | 5 |
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 (TA = 25°C, Iout = 10 mA), 5.0 V option | Vout | 4.9 | 5 | 5.1 | V | TA = 25°C, Iout = 10 mA | 3 |
| Output Voltage (TA = Tlow to Thigh, Iout = 10 mA), 5.0 V option | Vout | 4.85 | 5 | 5.15 | V | TA = Tlow to Thigh, Iout = 10 mA; NCP551 Tlow = −40°C, Thigh = +85°C | 3 |
| Line Regulation | Regline | 10 | 30 | mV | Vin = Vout + 1.0 V to 12 V, Iout = 10 mA | 3 | |
| Load Regulation | Regload | 40 | 65 | mV | Iout = 10 mA to 150 mA, Vin = Vout + 2.0 V | 3 | |
| Output Current, 4.1 V−5.0 V option (Vin = 8.0 V) | Io(nom.) | 150 | mA | Vout = (Vout at Iout = 100 mA) −3%; 4.1 V−5.0 V (Vin = 8.0 V) | 3 | ||
| Dropout Voltage, 2.7 V to 5.0 V group | Vin−Vout | 40 | 150 | mV | Iout = 10 mA, measured at Vout −3.0%; 2.7 V, 2.8 V, 2.9 V, 3.0 V, 3.1 V, 3.2 V, 3.3 V, 3.6 V, 3.8 V, 5.0 V | 3 | |
| Quiescent Current, Enable Input = 0 V, 4.1 V−5.0 V option (Vin = 8.0 V) | IQ | 0.1 | 1 | µA | Enable Input = 0 V; 4.1 V−5.0 V options, Vin = 8.0 V | 3 | |
| Quiescent Current, Enable Input = Vin, Iout = 1.0 mA to Io(nom.), 4.1 V−5.0 V option (Vin = 8.0 V) | IQ | 4 | 8 | µA | Enable Input = Vin, Iout = 1.0 mA to Io(nom.); 4.1 V−5.0 V options, Vin = 8.0 V | 3 | |
| Enable Input Threshold Voltage, voltage increasing (output turns on, logic high) | Vth(en) | 1.3 | V | Voltage increasing, output turns on, logic high | 3 | ||
| Enable Input Threshold Voltage, voltage decreasing (output turns off, logic low) | Vth(en) | 0.3 | V | Voltage decreasing, output turns off, logic low | 3 | ||
| Output Voltage Temperature Coefficient | Tc | 100 | ppm/°C | 3 | |||
| Output Short Circuit Current, 4.1 V−5.0 V option (Vin = 8.0 V) | Iout(max) | 160 | 350 | 600 | mA | Vout = 0 V; 4.1 V−5.0 V (Vin = 8.0 V) | 4 |
| Input Voltage | Vin | 0 | 12 | V | 2 | ||
| Enable Voltage | VEN | -0.3 | V | Maximum printed as Vin + 0.3 V | 2 | ||
| Output Voltage (absolute maximum) | Vout | -0.3 | V | Maximum printed as Vin + 0.3 V | 2 | ||
| Operating Junction Temperature | TJ | 150 | °C | 2 | |||
| Operating Ambient Temperature | TA | -40 | 85 | °C | NCP551 | 2 | |
| Storage Temperature | Tstg | -55 | 150 | °C | 2 | ||
| ESD Human Body Model | 2000 | V | Per MIL-STD-883, Method 3015 | 2 | |||
| ESD Machine Model | 200 | V | Method 200 | 2 | |||
| Junction-to-Ambient Thermal Resistance | RJA | 250 | °C/W | 1 oz Copper Thickness, 100 mm2 | 2 | ||
| Junction-to-Lead Thermal Characteristic | PSIJ-L2 | 68 | °C/W | 1 oz Copper Thickness, 100 mm2 | 2 |
Materials and finish
As the datasheet states them (page.json metadata.appearance; the 3D model's colours follow it).
| Part | Material | Colour / plating | Datasheet says | Page |
|---|---|---|---|---|
| contacts | Copper | PSIJ−Lead 2 J−L2 1 oz Copper Thickness, 100 mm2 68 °C/W | 2 |
CAD (KiCad official)
- Symbol:
NCP551SN50T1G - Footprint:
Package_SO:TSOP-5_1.65x3.05mm_P0.95mm - 3D model: TSOP-5 (KiCad packages3D, STEP)
- 3D model files:
ncp551sn50t1g-etched.step/ncp551sn50t1g-etched.glbcarry the MPN laser-etched on the die in a toggleableAdom.LaserEtchgroup (Fusion-ready);ncp551sn50t1g.step/ncp551sn50t1g.glbare the bare package body.
Provenance
Data extracted from the manufacturer datasheet, not a distributor listing:
- Datasheet: onsemi datasheet (13 pp, sha256
87f960bc836c0c40, 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).