MIC4427YM from Microchip Tech, in a SOIC-8. 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	NC	unconnected	Not internally connected.
2	INA	input	Control Input A is a TTL/CMOS compatible logic input.
3	GND	power_in	Ground return for the driver.
4	INB	input	Control Input B is a TTL/CMOS compatible logic input.
5	OUTB	output	Output B is a CMOS totem-pole output.
6	VS	power_in	Supply input operating from +4.5V to +18V.
7	OUTA	output	Output A is a CMOS totem-pole output.
8	NC	unconnected	Not internally connected.

Key specifications

Parameter	Value
Manufacturer	Microchip Tech
Package	SOIC-8
Category	Power Management ICs
Pins	8

Electrical characteristics

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

Parameter	Symbol	Min	Typ	Max	Unit	Conditions	Page
Supply Voltage	VS			22	V		4
Junction Temperature	TJ			150	°C		4
Storage Temperature		-65		150	°C		4
Lead Temperature				300	°C	10 sec.	4
Input Voltage	VIN	-5			V	Lower limit GND, 5V; upper limit VS + 0.3V	4
Supply Voltage	VS	4.5		18	V		4
Temperature Range (B)	TA	-40		85	°C	Grade (B)	4
Logic 1 Input Voltage	VIH	2.4			V	4.5V ≤ Vs ≤ 18V	4
Logic 0 Input Voltage	VIL		1.1	0.8	V	4.5V ≤ Vs ≤ 18V	4
Input Current	IIN	-1		1	µA	0 ≤ VIN ≤ VS	4
Low Output Voltage	VOL			0.025	V		4
Output Resistance	RO		6	10	Ω	IOUT = 10mA, VS = 18V	4
Output Resistance	RO		8	12	Ω		4
Peak Output Current	IPK		1.5		A		4
Latch-Up Protection withstand reverse current	IR	500			mA	withstand reverse current	4
Rise Time	tR		18	30	ns	test Figure 1	4
Rise Time	tR		20	40	ns	test Figure 1	4
Fall Time	tF		15	20	ns	test Figure 1	4
Fall Time	tF		29	40	ns	test Figure 1	4
Delay Time	tD1		17	30	ns	test Figure 1	4
Delay Time	tD1		19	40	ns	test Figure 1	4
Delay Time	tD2		23	50	ns	test Figure 1	4
Delay Time	tD2		27	60	ns	test Figure 1	4
Pulse Width	tPW	400			ns	test Figure 1	4
Power Supply Current	IS	0.6	1.4	4.5	mA	VINA = VINB = 3.0V	4
Power Supply Current	IS		1.5	8	mA	VINA = VINB = 3.0V	4
Power Supply Current	IS		0.18	0.4	mA	VINA = VINB = 0.0V	4
Power Supply Current	IS		0.19	0.6	mA	VINA = VINB = 0.0V	4

CAD (KiCad official)

Symbol: MIC4427YM
Footprint: Package_SO:SOIC-8_3.9x4.9mm_P1.27mm
3D model: SOIC-8 (KiCad packages3D, STEP)
3D model files: mic4427ym-etched.step / mic4427ym-etched.glb carry the MPN laser-etched on the die in a toggleable Adom.LaserEtch group (Fusion-ready); mic4427ym.step / mic4427ym.glb are the bare package body.

Provenance

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

Datasheet: Microchip Tech datasheet (9 pp, sha256 4ee5141786e66a5d, retrieved 2026-11-02, tier: lcsc)
Extractor: parts-factory 2.0.0 / extract_pins 0.3, primary claude-haiku-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

MIC4427YM

Verified MIC4427YM

Verification log 1 record

3D Model

Symbol & Footprint

Schematic Symbol

PCB Footprint

Datasheet

README