LT1761IS5-3#TRMPBF from Analog Devices, in a TSOT-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	IN	power_in	Input pin that supplies power to the device over a 1.8V to 20V input range, with a 1μF to 10μF bypass capacitor recommended when the device is more than six inches from the main input filter capacitor.
2	GND	power_in	Ground reference pin for the regulator.
3	SHDN	input	Shutdown pin that switches the output off when pulled low, can be driven by 5V logic or an open-collector gate with a pull-up resistor, and must be connected to VIN if unused.
4	BYP	passive	Bypass pin clamped internally to ±0.6V from ground, where a capacitor up to 0.01μF from OUT lowers output noise to a typical 20μVRMS over 10Hz to 100kHz and the pin must be left unconnected if not used.
5	OUT	power_out	Output pin that supplies the load at up to 100mA, requiring a minimum 1μF output capacitor to prevent oscillations.

Key specifications

Parameter	Value
Manufacturer	Analog Devices
Package	TSOT-23-5
Category	Power Management ICs
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
Regulated Output Voltage LT1761-3	VOUT	2.96	3	3.04	V	VIN = 3.5V, ILOAD = 1mA	4
Regulated Output Voltage LT1761-3	VOUT	2.93	3	3.07	V	4V < VIN < 20V, 1mA < ILOAD < 50mA	4
Regulated Output Voltage LT1761-3	VOUT	2.9	3	3.09	V	4V < VIN < 20V, 1mA < ILOAD < 100mA	4
Minimum Input Voltage	VIN(MIN)	1.8		2.3	V	ILOAD = 100mA	4
Absolute Maximum IN Pin Voltage	VIN	-20		20	V		2
Absolute Maximum Input to Output Differential Voltage	VIN-VOUT	-20		20	V		2
Absolute Maximum SHDN Pin Voltage	VSHDN	-20		20	V		2
Operating Junction Temperature Range (I Grade)	TJ	-40		125	°C	I Grade	2
Storage Temperature Range	TSTG	-65		150	°C		2
Lead Temperature (Soldering, 10 sec)				300	°C	Soldering, 10 sec	2
Dropout Voltage	VDROPOUT		0.1	0.15	V	ILOAD = 1mA	5
Dropout Voltage	VDROPOUT		0.1	0.19	V	ILOAD = 1mA (full operating temperature range)	5
Dropout Voltage	VDROPOUT		0.17	0.22	V	ILOAD = 10mA	5
Dropout Voltage	VDROPOUT		0.17	0.29	V	ILOAD = 10mA (full operating temperature range)	5
Dropout Voltage	VDROPOUT		0.24	0.28	V	ILOAD = 50mA	5
Dropout Voltage	VDROPOUT		0.24	0.38	V	ILOAD = 50mA (full operating temperature range)	5
Dropout Voltage	VDROPOUT		0.3	0.35	V	ILOAD = 100mA	5
Dropout Voltage	VDROPOUT		0.3	0.45	V	ILOAD = 100mA (full operating temperature range)	5
GND Pin Current	IGND		20	45	μA	VIN = VOUT(NOMINAL), ILOAD = 0mA	6
GND Pin Current	IGND		55	100	μA	VIN = VOUT(NOMINAL), ILOAD = 1mA	6
GND Pin Current	IGND		230	400	μA	VIN = VOUT(NOMINAL), ILOAD = 10mA	6
GND Pin Current	IGND		1	2	mA	VIN = VOUT(NOMINAL), ILOAD = 50mA	6
GND Pin Current	IGND		2.2	4	mA	VIN = VOUT(NOMINAL), ILOAD = 100mA	6
Line Regulation LT1761-3			1	10	mV	ΔVIN = 3.5V to 20V, ILOAD = 1mA	4
Quiescent Current in Shutdown	IQ(SHDN)		0.01	0.1	μA	VIN = 6V, VSHDN = 0V	6
Output Voltage Noise	VN		20		μVRMS	COUT = 10μF, CBYP = 0.01μF, ILOAD = 100mA, BW = 10Hz to 100kHz	6
Current Limit	ILIM	110		200	mA	VIN = VOUT(NOMINAL) + 1V or 2.3V (Note 12), ΔVOUT = -5%	6
Input Reverse Leakage Current	IR			1	mA	VIN = -20V, VOUT = 0V	6
Reverse Output Current LT1761-3	IRO		10	20	μA	VOUT = 3V, VIN < 3V	6
Ripple Rejection	RR	55	65		dB	VIN, VOUT = 1.5V (Avg), VRIPPLE = 0.5VP-P, fRIPPLE = 120Hz, ILOAD = 50mA	6
Thermal Resistance Junction-to-Ambient (package header)	θJA		250		°C/W	Package header value	2
Thermal Resistance Junction-to-Ambient (measured, 2500mm2 board and copper)	θJA		125		°C/W	2500mm2 topside copper, 2500mm2 backside copper, 2500mm2 board area	17

CAD (KiCad official)

Symbol: LT1761IS5-3#TRMPBF
Footprint: Package_TO_SOT_SMD:TSOT-23-5
3D model: TSOT-23-5 (KiCad packages3D, STEP)
3D model files: lt1761is5-3-trmpbf-etched.step / lt1761is5-3-trmpbf-etched.glb carry the MPN laser-etched on the die in a toggleable Adom.LaserEtch group (Fusion-ready); lt1761is5-3-trmpbf.step / lt1761is5-3-trmpbf.glb are the bare package body.

Provenance

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

Datasheet: Analog Devices datasheet (22 pp, sha256 5e4fc36c022415d2, retrieved 2026-10-30, 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

LT1761IS5-3#TRMPBF

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3D Model

Symbol & Footprint

Schematic Symbol

PCB Footprint

Datasheet

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