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Generated by kicad-footprint-generator · KiCad file format 20260206

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HV7801K1-G

Microchip Tech · Monitors & Reset Circuits · SOT-23-5

HV7801K1-G from Microchip Tech, in a SOT-23-5. 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	LOAD	input	High impedance sense amplifier input with Zener diode protection; add an external protection resistor in series if VSENSE exceeds the range of -600mV to +5.0V.
2	NC	unconnected	No connect; this pin must be left floating for proper operation.
3	IN	power_in	Sense amplifier input and supply, with supply voltage range of 8V to 450V.
4	GND	power_in	Supply return (ground).
5	OUT	output	Output with a nominal output resistance of 16.5kΩ; accuracy preservation may require an external buffer amplifier to prevent excessive loading.

Key specifications

Parameter	Value
Manufacturer	Microchip Tech
Package	SOT-23-5
Category	Power Supply Chip
Pins	5

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	VIN	8		450	V	Values apply over the full temperature range	2
Quiescent supply current	IQ			50	µA	VIN = 8V to 450V, VSENSE = 0mV	2
Output voltage	VOUT	0		65	mV	VSENSE = 0mV	2
Output voltage	VOUT	420		580	mV	VSENSE = 100mV	2
Output voltage	VOUT	913		1087	mV	VSENSE = 200mV	2
Output voltage	VOUT	2395		2605	mV	VSENSE = 500mV	2
Output rise time, 10% to 90%	tRISE			2	µs	VSENSE step 0mV to 500mV	2
Output fall time, 90% to 10%	tFALL		0.7	2	µs	VSENSE step 500mV to 0mV	2
Output rise time, 10% to 90%	tRISE		0.7		µs	VSENSE step 5.0mV to 500mV	2
OUT pin output resistance	ROUT		16.5		kΩ		2
Voltage gain tolerance		-1	5	1	%	Typical gain 5.0±1%	1
VIN, VLOAD absolute maximum	VIN, VLOAD	-0.5		460	V		2
VOUT absolute maximum	VOUT	-0.5		10	V		2
VSENSE absolute maximum	VSENSE	-0.5		5	V		2
ILOAD absolute maximum	ILOAD	-10		10	mA		2
Operating ambient temperature		-40		85	°C		2
Operating junction temperature		-40		125	°C		2
Storage temperature		-65		150	°C		2
Maximum VSENSE	VSENSE			500	mV	Normal operating conditions	1
Thermal resistance, junction to ambient	θja		253		°C/W	5-Lead SOT-23, JEDEC JESD51-7 testboard	2

CAD (KiCad official)

Symbol: HV7801K1-G
Footprint: Package_TO_SOT_SMD:SOT-23-5
3D model: SOT-23-5 (KiCad packages3D, STEP)
3D model files: hv7801k1-g-etched.step / hv7801k1-g-etched.glb carry the MPN laser-etched on the die in a toggleable Adom.LaserEtch group (Fusion-ready); hv7801k1-g.step / hv7801k1-g.glb are the bare package body.

Provenance

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

Datasheet: Microchip Tech datasheet (5 pp, sha256 0213e855416865b3, retrieved 2026-10-23, tier: lcsc)
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