component

FAN48617UC50X

Public Made by Adom

by adom

onsemi DC-DC Converters, WLCSP-9(1.2x1.2). Pinout cross-checked by two models against the datasheet, KiCad symbol/footprint/3D.

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FAN48617UC50X

onsemi · DC-DC Converters · WLCSP-9(1.2x1.2)

FAN48617UC50X from onsemi, in a WLCSP-9(1.2x1.2). 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 VOUT power_out Output voltage terminal (5.0 V regulated output); connect directly to COUT.
A2 VOUT power_out Output voltage terminal (5.0 V regulated output); connect directly to COUT.
A3 VIN power_in Input voltage (2.7 V to 4.5 V operating); connect to Li-Ion battery input power source and CIN.
B1 SW passive Switching node; connect to inductor.
B2 SW passive Switching node; connect to inductor.
B3 EN input Enable: HIGH enables the circuit, and pulling it LOW after startup forces Forced Pass-Through Mode.
C1 PGND power_in Power ground return for the IC; return COUT to these pins with the shortest path possible.
C2 PGND power_in Power ground return for the IC; return COUT to these pins with the shortest path possible.
C3 AGND power_in Analog ground reference for the IC; connect to PGND at a single point.

Key specifications

Parameter Value
Manufacturer onsemi
Package WLCSP-9(1.2x1.2)
Category Power Supply Chip
Pins 9

Electrical characteristics

Limits as printed in the datasheet (page.json metadata.characteristics carries them as data).

Parameter Symbol Min Typ Max Unit Conditions Page
Voltage on VIN Pin VIN -0.3 6 V 4
Voltage on VOUT Pin VOUT 6 V 4
SW Node DC VSW -0.3 6 V DC 4
SW Node Transient VSW -1 8 V Transient: 10 ns, 3 MHz 4
Voltage on Other Pins VCC -0.3 6 V Lesser of 6.0 V or VIN + 0.3 V 4
ESD Human Body Model ESD 2 kV Human Body Model, ANSI/ESDA/JEDEC JS-001-2012 4
ESD Charged Device Model ESD 1 kV Charged Device Model per JESD22-C101 4
Junction Temperature TJ -40 150 °C 4
Storage Temperature TSTG -65 150 °C 4
Lead Soldering Temperature TL 260 °C 10 Seconds 4
Supply Voltage VIN 2.7 4.5 V 4
Maximum Output Current IOUT 1000 mA 4
Ambient Temperature TA -40 85 °C 4
Junction Temperature TJ -40 125 °C 4
Output Voltage Accuracy DC VREG -2 2 % 2.7 V ≤ VIN ≤ 4.5 V 5
Switching Frequency fSW 1.8 2.3 2.8 MHz IOUT = 300 mA 5
Junction-to-Ambient Thermal Resistance ϴJA 50 °C/W 4
VIN Quiescent Current IQ 95 µA IOUT = 0 mA, EN = 1.8 V, No Switching 5
VIN Quiescent Current Forced Pass-Through IQ 3.5 µA EN = 0 V, VOUT = VIN 5
Under-Voltage Lockout VUVLO 2.2 V VIN Rising 5
Under-Voltage Lockout Hysteresis VUVLO_HYS 150 mV 5
Enable HIGH Voltage VIH 1.05 V 5
Enable LOW Voltage VIL 0.4 V 5
EN HIGH to 95% of Regulation tSS 425 µs IOUT = 150 mA 5
FAULT Restart Timer tRST 20 ms 5
N-Channel Boost Switch RDS(ON) RDS(ON)N 63 mΩ 5
P-Channel Sync. Rectifier RDS(ON) RDS(ON)P 52 mΩ 5

CAD (KiCad official)

  • Symbol: FAN48617UC50X
  • Footprint: Package_CSP:WLCSP-9_1.21x1.22mm_Layout3x3_P0.4mm
  • 3D model: WLCSP-9(1.2x1.2) (KiCad packages3D, STEP)
  • 3D model files: fan48617uc50x-etched.step / fan48617uc50x-etched.glb carry the MPN laser-etched on the die in a toggleable Adom.LaserEtch group (Fusion-ready); fan48617uc50x.step / fan48617uc50x.glb are the bare package body.

Provenance

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

  • Datasheet: onsemi datasheet (11 pp, sha256 8e423ab9f9b3bec1, 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