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NCP161AFCS330T2G

Public Made by Adom

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onsemi Linear Voltage Regulators (LDO), WLCSP-4(0.6x0.6). Pinout cross-checked by two models against the datasheet, KiCad symbol/footprint/3D.

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NCP161AFCS330T2G

onsemi · Linear Voltage Regulators (LDO) · WLCSP-4(0.6x0.6)

NCP161AFCS330T2G 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 (3.3 V for this option); should be bypassed with a small 1 µF ceramic capacitor.
B1 EN input Chip enable: VEN < 0.4 V disables the regulator, 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 3
Output Voltage Accuracy VOUT -2 2 % VIN = VOUT(NOM) + 1 V, 0 mA ≤ IOUT ≤ 450 mA, WLCSP4, XDFN4 3
Dropout Voltage VDO 160 260 mV IOUT = 450 mA, WLCSP4, VOUT(NOM) = 3.3 V 3
Output Current Limit ICL 450 700 mA VOUT = 90% VOUT(NOM) 3
Quiescent Current IQ 18 23 µA IOUT = 0 mA 3
Shutdown Current IDIS 0.01 1 µA VEN ≤ 0.4 V, VIN = 4.8 V 3
EN Input Voltage H VENH 1.2 V EN Input Voltage "H" 3
EN Input Voltage L VENL 0.4 V EN Input Voltage "L" 3
EN Pull Down Current IEN 0.2 0.5 µA VEN = 4.8 V 3
Line transient falling TranLINE -1 mV VIN = (VOUT(NOM) + 1 V) to (VOUT(NOM) + 1.6 V) in 30 µs, IOUT = 1 mA 3
Line transient rising TranLINE 1 mV VIN = (VOUT(NOM) + 1.6 V) to (VOUT(NOM) + 1 V) in 30 µs, IOUT = 1 mA 3
Load transient TranLOAD -40 mV IOUT = 1 mA to 450 mA in 10 µs 3
Load transient TranLOAD 40 mV IOUT = 450 mA to 1 mA in 10 µs 3
Line Regulation LineReg 0.02 %/V VOUT(NOM) + 1 V ≤ VIN ≤ 5.5 V 3
Load Regulation LoadReg 0.001 %/mA IOUT = 1 mA to 450 mA, WLCSP4, XDFN4 3
Short Circuit Current ISC 690 mA VOUT = 0 V 3
Active output discharge resistance RDIS 280 Ω VEN < 0.4 V, Version A only 3
Thermal Shutdown Threshold rising TSDH 160 °C Temperature rising 3
Thermal Shutdown Threshold falling TSDL 140 °C Temperature falling 3
Input Voltage VIN -0.3 6 V 2
Output Voltage VOUT -0.3 6 V -0.3 to VIN + 0.3, max. 6 V 2
Chip Enable Input VCE -0.3 6 V 2
Maximum Junction Temperature TJ 150 °C 2
Storage Temperature TSTG -55 150 °C 2
ESD Capability, Human Body Model ESDHBM 2000 V 2
ESD Capability, Machine Model ESDMM 200 V 2
Thermal Resistance, Junction-to-Air, CSP4 RθJA 108 °C/W JEDEC board JESD51-7 2
Power Supply Rejection Ratio PSRR 98 dB IOUT = 20 mA, f = 1 kHz 3
Output Voltage Noise VN 10 µVRMS f = 10 Hz to 100 kHz, IOUT = 250 mA 3
Turn-On Time 120 µs COUT = 1 µF, From assertion of VEN to VOUT = 95% VOUT(NOM) 3

CAD (KiCad official)

  • Symbol: NCP161AFCS330T2G
  • 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: ncp161afcs330t2g-etched.step / ncp161afcs330t2g-etched.glb carry the MPN laser-etched on the die in a toggleable Adom.LaserEtch group (Fusion-ready); ncp161afcs330t2g.step / ncp161afcs330t2g.glb are the bare package body.

Provenance

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

  • Datasheet: onsemi datasheet (22 pp, sha256 1bc92a33636c394e, retrieved 2026-10-27, tier: manufacturer)
  • Extractor: parts-factory 2.0.0 / extract_pins 0.3, primary claude-sonnet-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