component
NCP161AFCS450T2G
Public Made by Adomby adom
onsemi Linear Voltage Regulators (LDO), WLCSP-4(0.6x0.6). 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
markdownNCP161AFCS450T2G
onsemi · Linear Voltage Regulators (LDO) · WLCSP-4(0.6x0.6)
NCP161AFCS450T2G from onsemi, in a WLCSP-4(0.6x0.6). 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 |
|---|---|---|---|
| A1 | IN | power_in | Input voltage supply pin, operating range 1.9 V to 5.5 V. |
| A2 | OUT | power_out | Regulated output voltage (4.5 V for this option); the output should be bypassed with a small 1 µF ceramic capacitor. |
| B1 | EN | input | Chip enable: applying VEN < 0.4 V disables the regulator, and pulling VEN > 1.2 V enables the LDO. |
| B2 | GND | power_in | Common ground connection. |
Key specifications
| Parameter | Value |
|---|---|
| Manufacturer | onsemi |
| Package | WLCSP-4(0.6x0.6) |
| Category | Power Management ICs |
| Pins | 4 |
Electrical characteristics
Limits as printed in the datasheet (page.json metadata.characteristics carries them as data).
| Parameter | Symbol | Min | Typ | Max | Unit | Conditions | Page |
|---|---|---|---|---|---|---|---|
| Operating Input Voltage | VIN | 1.9 | 5.5 | V | 4 | ||
| Output Voltage Accuracy | VOUT | -2 | 2 | % | VIN = VOUT(NOM) + 1 V, 0 mA ≤ IOUT ≤ 450 mA, WLCSP4, XDFN4 | 4 | |
| Dropout Voltage | VDO | 120 | 210 | mV | IOUT = 450 mA, WLCSP4, XDFN4, VOUT(NOM) = 4.5 V | 4 | |
| Output Current Limit | ICL | 450 | 700 | mA | VOUT = 90% VOUT(NOM) | 4 | |
| Quiescent Current | IQ | 18 | 23 | A | IOUT = 0 mA | 4 | |
| Shutdown Current | IDIS | 0.01 | 1 | A | VEN ≤ 0.4 V, VIN = 4.8 V | 4 | |
| EN Input Voltage H | VENH | 1.2 | V | EN Pin Threshold Voltage | 4 | ||
| EN Input Voltage L | VENL | 0.4 | V | EN Pin Threshold Voltage | 4 | ||
| EN Pull Down Current | IEN | 0.2 | 0.5 | A | VEN = 4.8 V | 4 | |
| Line transient | TranLINE | -1 | 1 | mV | VIN = (VOUT(NOM) + 1 V) to (VOUT(NOM) + 1.6 V) in 30 s, IOUT = 1 mA | 4 | |
| Load transient | TranLOAD | -40 | 40 | mV | IOUT = 1 mA to 450 mA in 10 s | 4 | |
| Input Voltage | VIN | -0.3 | 6 | V | 3 | ||
| Output Voltage | VOUT | -0.3 | 6 | V | -0.3 to VIN + 0.3, max. 6 V | 3 | |
| Chip Enable Input | VCE | -0.3 | 6 | V | 3 | ||
| Maximum Junction Temperature | TJ | 150 | °C | 3 | |||
| Storage Temperature | TSTG | -55 | 150 | °C | 3 | ||
| ESD Capability, Human Body Model | ESDHBM | 2000 | V | 3 | |||
| ESD Capability, Machine Model | ESDMM | 200 | V | 3 | |||
| Thermal Resistance, Junction-to-Air, CSP4 | RθJA | 108 | °C/W | JEDEC JESD51-7 board | 3 | ||
| Line Regulation | LineReg | 0.02 | %/V | VOUT(NOM) + 1 V ≤ VIN ≤ 5.5 V | 4 | ||
| Load Regulation | LoadReg | 0.001 | %/mA | IOUT = 1 mA to 450 mA, WLCSP4, XDFN4 | 4 | ||
| Short Circuit Current | ISC | 690 | mA | VOUT = 0 V | 4 | ||
| Turn-On Time | 120 | s | COUT = 1 F, From assertion of VEN to VOUT = 95% VOUT(NOM) | 4 | |||
| Thermal Shutdown Threshold | TSDH | 160 | °C | Temperature rising | 4 | ||
| Thermal Shutdown Threshold | TSDL | 140 | °C | Temperature falling | 4 | ||
| Active output discharge resistance | RDIS | 280 | Ω | VEN < 0.4 V, Version A only | 4 |
CAD (KiCad official)
- Symbol:
NCP161AFCS450T2G - Footprint:
Package_CSP:WLCSP-4_0.64x0.64mm_Layout2x2_P0.35mm - 3D model: WLCSP-4(0.6x0.6), generated from the KiCad footprint (body from the F.Fab outline, terminals on the pads, 0.35 mm nominal DSBGA height). Neither the vendor nor KiCad ships a 3D model for this package, so the dimensions are nominal, not the manufacturer's CAD (STEP)
- 3D model files:
ncp161afcs450t2g-etched.step/ncp161afcs450t2g-etched.glbcarry the MPN laser-etched on the die in a toggleableAdom.LaserEtchgroup (Fusion-ready);ncp161afcs450t2g.step/ncp161afcs450t2g.glbare the bare package body.
Provenance
Data extracted from the manufacturer datasheet, not a distributor listing:
- Datasheet: onsemi datasheet (23 pp, sha256
3032b450d455a119, retrieved 2026-10-23, tier: manufacturer) - Extractor: parts-factory
2.0.0/extract_pins 0.3, primaryclaude-sonnet-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).