ADM693AARNZ from Analog Devices, in a SOIC-16. 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	VBATT	power_in	Backup battery input, connected to an external battery or capacitor, or to ground if no backup battery is used.
2	VOUT	power_out	Output voltage to which VCC or VBATT is internally switched (whichever is higher), supplying up to 250 mA; connect to VCC if no backup battery is used.
3	VCC	power_in	+5 V power supply input.
4	GND	power_in	0 V ground reference for all signals.
5	BATT ON	output	Logic output that goes high when VOUT is switched to VBATT and low when switched to VCC; can drive an external PNP base via a resistor to exceed the 250 mA VOUT rating.
6	LOW LINE	output	Logic output that goes low when VCC falls below the reset threshold and returns high as soon as VCC rises above it.
7	OSC IN	input	Oscillator input that selects 100 ms (low) or 1.6 s (floating) watchdog timeout with the internal oscillator, or accepts an external clock or capacitor to GND when OSC SEL is low.
8	OSC SEL	input	Oscillator select input with 10 µA internal pullup; floating or high enables the internal oscillator, low enables the external OSC IN timing.
9	PFI	input	Noninverting power fail comparator input with 1.25 V threshold; PFO goes low when PFI is below 1.25 V; connect to GND or VOUT when unused.
10	PFO	output	Power fail comparator output that goes low when PFI is less than 1.25 V.
11	WDI	input	Three-level watchdog input; RESET pulses and WDO goes low if WDI stays high or low longer than the timeout, and the watchdog is disabled if WDI floats or is at midsupply.
12	CEOUT	output	Chip enable output that goes low only when CEIN is low and VCC is above the reset threshold; if CEIN is low at reset assertion it stays low for 15 µs or until CEIN goes high.
13	CEIN	input	Chip enable gating input; connect to GND or VOUT if not used.
14	WDO	output	Watchdog logic output that goes low if WDI stays high or low longer than the watchdog timeout and is set high by the next WDI transition.
15	~{RESET}	output	Logic output that goes low if VCC falls below the reset threshold and remains low for 200 ms typ after VCC rises above it.
16	RESET	output	Open-drain logic output that is the inverse of the pin 15 RESET output.

Key specifications

Parameter	Value
Manufacturer	Analog Devices
Package	SOIC-16
Category	Power Supply Chip
Pins	16

Electrical characteristics

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

Parameter	Symbol	Min	Typ	Max	Unit	Conditions	Page
VCC, VBATT Operating Voltage Range		0		5.5	V	Either VCC or VBATT can be 0 V if the other > +2.0 V	2
Reset Voltage Threshold ADM693A		4.25	4.4	4.5	V	ADM693A, ADM800M	2
VCC to VOUT Output Resistance			0.8	1.2	Ω	VCC = 4.5 V	2
Supply Current (Excludes IOUT)			70	100	µA	VCC > (VBATT, 1 V)	2
Supply Current in Battery Backup (Excludes IOUT)			0.04	1	µA	VCC < (VBATT, 1.2 V), VBATT = 2.8 V	2
Battery Standby Current		-0.1		0.02	µA	(VBATT +0.2 V) < VCC, TA = +25°C	2
Battery Standby Current		-1		0.02	µA	(VBATT +0.2 V) < VCC	2
Reset Timeout Period Internal Oscillator		140	200	280	ms	Power Up	2
Watchdog Timeout Period, Internal Oscillator, Long Period		1	1.6	2.25	s	Long Period	2
Watchdog Timeout Period, Internal Oscillator, Short Period		70	100	140	ms	Short Period	2
PFI Input Threshold ADM69xA		1.2	1.25	1.3	V	VCC = 5 V	2
CEIN to CEOUT Resistance			40	150	Ω	Enable Mode	3
CEIN to CEOUT Propagation Delay			6	10	ns	RIN = 50 Ω, CLOAD = 50 pF	3
CEOUT Short-Circuit Current		0.1	0.75	2	mA	Disable Mode, CEOUT = 0 V	3
VCC Supply Voltage	VCC	-0.3		6	V	TA = 25°C	3
VBATT Voltage	VBATT	-0.3		6	V	TA = 25°C	3
Operating Temperature Range, Industrial (A Version)		-40		85	°C		3
Storage Temperature Range		-65		150	°C		3
Power Dissipation, R-16 Narrow SOIC				700	mW	TA = 25°C	3
Thermal Impedance θJA, R-16 Narrow SOIC	θJA		110		°C/W	Printed as '110°W'	3
Input Current VCC (Peak)				1000	mA		3
Input Current VCC (Continuous)				250	mA		3
Lead Temperature (Soldering, 10 sec)				300	°C		3

CAD (KiCad official)

Symbol: ADM693AARNZ
Footprint: Package_SO:SOIC-16_3.9x9.9mm_P1.27mm
3D model: SOIC-16 (KiCad packages3D, STEP)
3D model files: adm693aarnz-etched.step / adm693aarnz-etched.glb carry the MPN laser-etched on the die in a toggleable Adom.LaserEtch group (Fusion-ready); adm693aarnz.step / adm693aarnz.glb are the bare package body.

Provenance

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

Datasheet: Analog Devices datasheet (12 pp, sha256 21aaacfd42c57a27, retrieved 2026-10-31, tier: manufacturer)
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

ADM693AARNZ

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3D Model

Symbol & Footprint

Schematic Symbol

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Datasheet

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