MCP16418-I from Microchip Tech, in a MSOP-10. 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	UVLO	input	Undervoltage lockout input using a 0.485V internal reference and input to the low battery comparator; tie to VIN for the default 0.85V start-up threshold or use a resistive divider to raise UVLOSTART.
2	LBO	output	Open-drain low battery comparator output that is asserted low when the UVLO pin detects a level below the 485 mV threshold.
3	PG	output	Open-drain Power Good output (MCP16415/6/7/8 have Power Good only) that switches low when VOUT drops below 10% of its nominal value.
4	VFB	input	Feedback voltage pin for output regulation via a resistive divider, with a 0.97V reference voltage.
5	VOUT	power_out	Output voltage pin connecting the integrated synchronous P-channel MOSFET to the output capacitor, also used for the feedback divider.
6	SW	passive	Switch node for the boost inductor, carrying inductor current as high as 1A (typical).
7	PGND	power_in	Power ground return for the high-current N-channel switch, connected externally to SGND.
8	SGND	power_in	Signal ground return for the integrated reference and error amplifier, connected externally to PGND.
9	VIN	power_in	Input voltage pin (0.8V after start-up to 5.25V) requiring a local bypass capacitor of 10 µF minimum to GND.
10	EN	input	Enable control Schmitt-trigger input: high (>82% of VIN) enables, low (<25% of VIN) disables with 2.3 µA (typical) shutdown current, and it must not float.

Key specifications

Parameter	Value
Manufacturer	Microchip Tech
Package	MSOP-10
Category	Power Management (PMIC)
Pins	10

Electrical characteristics

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

Parameter	Symbol	Min	Typ	Max	Unit	Conditions	Page
Input Voltage Range	VIN	0.82		5.25	V	Values apply for the entire VOUT range	3
Minimum Input Voltage for Start-up	VIN			0.88	V		3
UVLO Start threshold	UVLOSTART	0.83	0.85	0.87	V	Resistive load; UVLO pin connected to VIN pin	3
UVLO Stop threshold	UVLOSTOP	0.74	0.8	0.81	V	Resistive load; UVLO pin connected to VIN pin	3
Output Voltage Adjust Range	VOUT	1.8		5.25	V	Note 1	3
Maximum Output Current	IOUT	170			mA	1.2V VIN, 2.0V VOUT (Note 4)	3
Maximum Output Current	IOUT	200			mA	1.5V VIN, 3.3V VOUT (Note 4)	3
Maximum Output Current	IOUT	600			mA	3.6V VIN, 5.0V VOUT (Note 4)	3
Feedback Voltage	VFB	0.95	0.97	0.985	V	Note 3	3
Quiescent Current, Shutdown Mode	IQSHDN		2.3	3.1	µA	VOUT = EN = GND, includes N-Channel and P-Channel switch leakage	4
NMOS Peak Switch Current Limit	IN(MAX)	0.8	1		A	Note 4	4
VOUT Accuracy	VOUT%			1	%	Includes line and load regulation, VIN = 1.5V, PWM Only options	4
Line Regulation	ΔVOUT/VOUT/ΔVDD		0.1	0.5	%/V	VIN = 1.5V to 2.7V, IOUT = 25 mA, PWM Only options	4
Load Regulation	ΔVOUT/VOUT		0.1	0.2	%	IOUT = 10 mA to 100 mA, VIN = 1.5V, PWM Only options	4
Switching Frequency	fSW	425	500	575	kHz	IOUT = 100 mA	4
EN Input Logic High	VIH	82			% of VIN	IOUT = 10 mA	4
EN Input Logic Low	VIL			25	% of VIN	IOUT = 10 mA	4
Low Battery Input Hysteresis	LBIHYS		20	40	mV	UVLO pin	4
EN, VFB, VIN, VSW, VOUT to GND				5.5	V		3
Output Current Bypass Mode				600	mA		3
Storage Temperature		-65		150	°C		3
Ambient Temperature with Power Applied		-40		85	°C		3
Operating Junction Temperature	TJ	-40		125	°C		3
ESD Protection, Human Body Model		4			kV	All pins, ≥ 4 kV	3
ESD Protection, Charged Device Model		2			kV	All pins, ≥ 2 kV	3
Operating Temperature Range	TJ	-40		125	°C	Steady state	5
Storage Temperature Range	TA	-65		150	°C		5
Maximum Junction Temperature	TJ			150	°C	Transient	5
Thermal Resistance, 10-Lead MSOP	θJA		71		°C/W		5
UVLO Hysteresis	UVLOHYS		50		mV		3
Feedback Input Bias Current	IVFB		1		nA	Note 4	3
NMOS Switch On-Resistance	RDS(ON)N		0.4		Ω	ISW = 100 mA (Note 4)	4
PMOS Switch On-Resistance	RDS(ON)P		0.5		Ω	ISW = 100 mA (Note 4)	4
Maximum Duty Cycle	DCMAX		90		%	Note 4	4
Thermal Shutdown Die Temperature	TSHDN		140		°C		5
Thermal Shutdown Temperature Hysteresis	TSHDNHYS		10		°C		5

CAD (KiCad official)

Symbol: MCP16418-I
Footprint: Package_SO:MSOP-10_3x3mm_P0.5mm
3D model: MSOP-10 (KiCad packages3D, STEP)
3D model files: mcp16418-i-etched.step / mcp16418-i-etched.glb carry the MPN laser-etched on the die in a toggleable Adom.LaserEtch group (Fusion-ready); mcp16418-i.step / mcp16418-i.glb are the bare package body.

Provenance

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

Datasheet: Microchip Tech datasheet (44 pp, sha256 dd533edd73721a88, retrieved 2026-11-02, tier: manufacturer)
Extractor: parts-factory 2.0.0 / extract_pins 0.3, primary claude-sonnet-5-5 (text), consensus claude-opus-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).

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MCP16418-I

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3D Model

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Datasheet

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