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MAX6372KA+T

Maxim Integrated · Monitors & Reset Circuits · SOT-23-8

MAX6372KA+T from Maxim Integrated, in a SOT-23-8. 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	WDI	input	Watchdog input: if WDI stays either high or low for the full watchdog timeout period (tWD), WDO pulses, and WDI must be connected to ground through a 100k (max) resistor if it is not driven by an external logic-level input.
2	GND	power_in	Ground reference for the device; all terminal voltages are specified with respect to GND.
3	N.C.	unconnected	Not connected; do not make any connection to this pin.
4	SET0	input	Logic input that, together with SET1 and SET2, selects the startup delay and watchdog timeout periods per Table 1, with a logic-high input threshold of 0.8 x VCC minimum.
5	SET1	input	Logic input that, together with SET0 and SET2, selects the startup delay and watchdog timeout periods per Table 1, with a logic-high input threshold of 0.8 x VCC minimum.
6	SET2	input	Logic input that, together with SET0 and SET1, selects the startup delay and watchdog timeout periods per Table 1, with a logic-high input threshold of 0.8 x VCC minimum.
7	WDO	output	Push-pull, active-low watchdog output that pulses low for the watchdog output pulse width tWDO (1 ms to 3 ms) when the watchdog times out, and needs no pullup resistor on this push-pull variant.
8	VCC	power_in	Supply voltage, specified from +2.5 V to +5.5 V.

Key specifications

Parameter	Value
Manufacturer	Maxim Integrated
Package	SOT-23-8
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
Operating Voltage Range	VCC	2.5		5.5	V	TA = -40°C to +125°C	3
Supply Current	ICC		8	20	µA	No load, TA = -40°C to +85°C	3
Supply Current	ICC		10	22	µA	No load, TA = -40°C to +125°C	3
Input Low Voltage	VIL			0.8	V	WDI, SET0, SET1, SET2; VCC ≥ 3.3V, TA = -40°C to +85°C	3
Input Low Voltage	VIL			0.6	V	WDI, SET0, SET1, SET2; VCC ≥ 3.3V, TA = -40°C to +125°C	3
Input Low Voltage	VIL			0.4	V	WDI, SET0, SET1, SET2; VCC ≥ 2.5V, TA = -40°C to +125°C	3
Logic Input Current		-10	0	10	nA	VWDI or VSET_ = 0V or VCC	3
WDO Output Low Voltage	VOL			0.3	V	ISINK = 1.2mA, VCC > 2.7V, watchdog output asserted	3
WDO Output Low Voltage	VOL			0.4	V	ISINK = 6mA, VCC > 4.5V, watchdog output asserted	3
Startup Delay Period	tDELAY	60		180	s	All other SET_ conditions (MAX6371/MAX6372)	4
Watchdog Time-Out Period	tWD	1		3	ms	VSET2 = 0V, VSET1 = 0V, VSET0 = 0V (MAX6371/MAX6372)	4
Watchdog Time-Out Period	tWD	3		9	ms	VSET2 = 0V, VSET1 = 0V, SET0 = VCC (MAX6371/MAX6372)	4
Watchdog Time-Out Period	tWD	10		30	ms	VSET2 = 0V, SET1 = VCC, VSET0 = 0V (MAX6371/MAX6372)	4
Watchdog Time-Out Period	tWD	100		300	ms	SET2 = VCC, VSET1 = 0V, VSET0 = 0V (MAX6371/MAX6372)	4
Watchdog Time-Out Period	tWD	300		900	ms	SET2 = VCC, VSET1 = 0V, SET0 = VCC (MAX6371/MAX6372)	4
Watchdog Time-Out Period	tWD	3		9	s	SET2 = VCC, SET1 = VCC, VSET0 = 0V (MAX6371/MAX6372)	4
Watchdog Time-Out Period	tWD	60		180	s	SET2 = VCC, SET1 = VCC, SET0 = VCC (MAX6371/MAX6372)	4
Watchdog Output Pulse Width	tWDO	1		3	ms	MAX6370/MAX6372/MAX6374	5
VCC Terminal Voltage (with respect to GND)	VCC	-0.3		6	V	With respect to GND	2
WDI Terminal Voltage (with respect to GND)	WDI	-0.3		6	V	With respect to GND	2
Maximum Current, Any Pin				20	mA	Input/output	2
Operating Temperature Range	TA	-40		125	°C		2
Storage Temperature Range	TSTG	-65		150	°C		2
Junction Temperature	TJ			150	°C		2
Lead Temperature (soldering)				300	°C	Soldering, 10s	2
Soldering Temperature (reflow), Lead(Pb)-free				260	°C	Lead(Pb)-free	2
Soldering Temperature (reflow), Containing Lead				240	°C	Containing lead (Pb)	2
Thermal Resistance Junction to Case, Single-Layer Board	θJC		80		°C/W	Single-layer board	2
Thermal Resistance Junction to Ambient, Multi-Layer Board	θJA		180		°C/W	Multi-layer board, JESD51-7 four-layer board	2
Thermal Resistance Junction to Case, Multi-Layer Board	θJC		60		°C/W	Multi-layer board, JESD51-7 four-layer board	2

CAD (KiCad official)

Symbol: MAX6372KA+T
Footprint: Package_TO_SOT_SMD:SOT-23-8
3D model: SOT-23-8 (KiCad packages3D, STEP)
3D model files: max6372ka-t-etched.step / max6372ka-t-etched.glb carry the MPN laser-etched on the die in a toggleable Adom.LaserEtch group (Fusion-ready); max6372ka-t.step / max6372ka-t.glb are the bare package body.

Provenance

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

Datasheet: Maxim Integrated datasheet (12 pp, sha256 c6de00247c521b3f, retrieved 2026-10-29, tier: manufacturer)
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