component
LT1761IS5-3.3#TRPBF
Public Made by Adomby adom
Analog Devices Linear Voltage Regulators (LDO), TSOT-23-5. Pinout cross-checked by two models against the datasheet, KiCad symbol/footprint/3D.
3D Model
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Symbol & Footprint
Schematic Symbol
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PCB Footprint
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Datasheet
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README
markdownLT1761IS5-3.3#TRPBF
Analog Devices · Linear Voltage Regulators (LDO) · TSOT-23-5
LT1761IS5-3.3#TRPBF 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 supply pin; the device withstands reverse voltage on IN relative to GND and OUT, with an absolute maximum IN pin voltage of ±20V and a minimum input voltage of 1.8V at 100mA load, and a bypass capacitor of 1µF to 10µF is sufficient if the device is far from the input filter capacitor. |
| 2 | GND | power_in | Ground reference pin for the regulator. |
| 3 | SHDN | input | Shutdown input that turns the output off when pulled low, can be driven by 5V logic or an open-collector gate with a pull-up resistor, must be connected to VIN if unused, and has an absolute maximum voltage of ±20V. |
| 4 | BYP | passive | Bypass pin clamped internally to ±0.6V from ground that accepts a capacitor from OUT of up to 0.01µF to lower output noise to a typical 20µVRMS, and must be left unconnected if not used. |
| 5 | OUT | power_out | Regulated output that supplies the load and requires a minimum 1µF output capacitor to prevent oscillations, with larger capacitors needed for large transient loads. |
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 |
|---|---|---|---|---|---|---|---|
| Minimum Input Voltage | 1.8 | 2.3 | V | ILOAD = 100mA; l = full operating temperature range | 4 | ||
| Regulated Output Voltage (LT1761-3.3) | 3.25 | 3.3 | 3.35 | V | VIN = 3.8V, ILOAD = 1mA | 4 | |
| Regulated Output Voltage (LT1761-3.3) | 3.23 | 3.3 | 3.37 | V | 4.3V < VIN < 20V, 1mA < ILOAD < 50mA; l = full operating temperature range | 4 | |
| Regulated Output Voltage (LT1761-3.3) | 3.19 | 3.3 | 3.4 | V | 4.3V < VIN < 20V, 1mA < ILOAD < 100mA; l = full operating temperature range | 4 | |
| Line Regulation (LT1761-3.3) | 1 | 10 | mV | ΔVIN = 3.8V to 20V, ILOAD = 1mA; l = full operating temperature range | 4 | ||
| Load Regulation (LT1761-3.3) | 10 | 20 | mV | VIN = 4.3V, ΔILOAD = 1mA to 50mA | 5 | ||
| Load Regulation (LT1761-3.3) | 40 | mV | VIN = 4.3V, ΔILOAD = 1mA to 50mA; l = full operating temperature range | 5 | |||
| Load Regulation (LT1761-3.3) | 20 | 40 | mV | VIN = 4.3V, ΔILOAD = 1mA to 100mA | 5 | ||
| Load Regulation (LT1761-3.3) | 100 | mV | VIN = 4.3V, ΔILOAD = 1mA to 100mA; l = full operating temperature range | 5 | |||
| Dropout Voltage | 0.1 | 0.15 | V | VIN = VOUT(NOMINAL), ILOAD = 1mA | 5 | ||
| Dropout Voltage | 0.19 | V | VIN = VOUT(NOMINAL), ILOAD = 1mA; l = full operating temperature range | 5 | |||
| Dropout Voltage | 0.17 | 0.22 | V | VIN = VOUT(NOMINAL), ILOAD = 10mA | 5 | ||
| Dropout Voltage | 0.29 | V | VIN = VOUT(NOMINAL), ILOAD = 10mA; l = full operating temperature range | 5 | |||
| Dropout Voltage | 0.24 | 0.28 | V | VIN = VOUT(NOMINAL), ILOAD = 50mA | 5 | ||
| Dropout Voltage | 0.38 | V | VIN = VOUT(NOMINAL), ILOAD = 50mA; l = full operating temperature range | 5 | |||
| Dropout Voltage | 0.3 | 0.35 | V | VIN = VOUT(NOMINAL), ILOAD = 100mA | 5 | ||
| Dropout Voltage | 0.45 | V | VIN = VOUT(NOMINAL), ILOAD = 100mA | 5 | |||
| GND Pin Current | 20 | 45 | μA | VIN = VOUT(NOMINAL), ILOAD = 0mA; l = full operating temperature range | 6 | ||
| GND Pin Current | 55 | 100 | μA | VIN = VOUT(NOMINAL), ILOAD = 1mA; l = full operating temperature range | 6 | ||
| GND Pin Current | 230 | 400 | μA | VIN = VOUT(NOMINAL), ILOAD = 10mA; l = full operating temperature range | 6 | ||
| GND Pin Current | 1 | 2 | mA | VIN = VOUT(NOMINAL), ILOAD = 50mA; l = full operating temperature range | 6 | ||
| GND Pin Current | 2.2 | 4 | mA | VIN = VOUT(NOMINAL), ILOAD = 100mA; l = full operating temperature range | 6 | ||
| Quiescent Current in Shutdown | 0.01 | 0.1 | μA | VIN = 6V, VSHDN = 0V | 6 | ||
| SHDN Pin Current | 0 | 1 | μA | VSHDN = 0V; l = full operating temperature range | 6 | ||
| SHDN Pin Current | 0.5 | 3 | μA | VSHDN = 20V; l = full operating temperature range | 6 | ||
| Shutdown Threshold | 0.8 | 2 | V | VOUT = Off to On | 6 | ||
| Shutdown Threshold | 0.25 | 0.65 | V | VOUT = On to Off | 6 | ||
| Ripple Rejection | 55 | 65 | dB | VIN, VOUT = 1.5V (Avg), VRIPPLE = 0.5VP-P, fRIPPLE = 120Hz, ILOAD = 50mA | 6 | ||
| Current Limit | 200 | mA | VIN = 7V, VOUT = 0V | 6 | |||
| Current Limit | 110 | mA | VIN = VOUT(NOMINAL) + 1V or 2.3V (Note 12), ΔVOUT = -5%; l = full operating temperature range | 6 | |||
| Input Reverse Leakage Current | 1 | mA | VIN = -20V, VOUT = 0V; l = full operating temperature range | 6 | |||
| Reverse Output Current (LT1761-3.3) | 10 | 20 | μA | VOUT = 3.3V, VIN < 3.3V | 6 | ||
| IN Pin Voltage | -20 | 20 | V | 2 | |||
| OUT Pin Voltage | -20 | 20 | V | 2 | |||
| Input to Output Differential Voltage | -20 | 20 | V | 2 | |||
| SHDN Pin Voltage | -20 | 20 | V | 2 | |||
| Operating Junction Temperature Range (I grade) | -40 | 125 | °C | I grade (LT1761IS5), Note 2 | 2 | ||
| Storage Temperature Range | -65 | 150 | °C | 2 | |||
| Lead Temperature (Soldering, 10 sec) | 300 | °C | Soldering, 10 sec | 2 | |||
| Maximum Junction Temperature (TJMAX) | TJMAX | 150 | °C | S5 package pinout note; the thermal section gives 125°C max rated junction temperature | 2 | ||
| Thermal Resistance, Junction-to-Ambient (S5 package) | θJA | 250 | °C/W | S5 (5-lead plastic TSOT-23) package, as stated in pinout note | 2 | ||
| Measured Thermal Resistance, Junction-to-Ambient | θJA | 125 | °C/W | Topside copper 2500mm², backside copper 2500mm², board area 2500mm²; 3/32in FR-4, 1oz copper, still air | 17 | ||
| Measured Thermal Resistance, Junction-to-Ambient | θJA | 130 | °C/W | Topside copper 225mm², backside copper 2500mm², board area 2500mm²; 3/32in FR-4, 1oz copper, still air | 17 | ||
| Measured Thermal Resistance, Junction-to-Ambient | θJA | 135 | °C/W | Topside copper 100mm², backside copper 2500mm², board area 2500mm²; 3/32in FR-4, 1oz copper, still air | 17 | ||
| Measured Thermal Resistance, Junction-to-Ambient | θJA | 150 | °C/W | Topside copper 50mm², backside copper 2500mm², board area 2500mm²; 3/32in FR-4, 1oz copper, still air | 17 |
CAD (KiCad official)
- Symbol:
LT1761IS5-3.3#TRPBF - Footprint:
Package_TO_SOT_SMD:TSOT-23-5 - 3D model: TSOT-23-5 (KiCad packages3D, STEP)
- 3D model files:
lt1761is5-3-3-trpbf-etched.step/lt1761is5-3-3-trpbf-etched.glbcarry the MPN laser-etched on the die in a toggleableAdom.LaserEtchgroup (Fusion-ready);lt1761is5-3-3-trpbf.step/lt1761is5-3-3-trpbf.glbare the bare package body.
Provenance
Data extracted from the manufacturer datasheet, not a distributor listing:
- Datasheet: Analog Devices datasheet (22 pp, sha256
5e4fc36c022415d2, retrieved 2026-10-29, tier: manufacturer) - Extractor: parts-factory
2.0.0/extract_pins 0.3, primaryclaude-haiku-5-5(text), consensusclaude-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).