component
FAN48617UC50X
Public Made by Adomby adom
onsemi DC-DC Converters, WLCSP-9(1.2x1.2). 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
markdownFAN48617UC50X
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.glbcarry the MPN laser-etched on the die in a toggleableAdom.LaserEtchgroup (Fusion-ready);fan48617uc50x.step/fan48617uc50x.glbare 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, 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).