# LT1964IS5-BYP#TRPBF

**Analog Devices** · Linear Voltage Regulators (LDO) · SOT-23-5

LT1964IS5-BYP#TRPBF from Analog Devices, 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 | GND | power_in | Ground; the ADJ pin voltage is referenced to ground at -1.22V. |
| 2 | IN | power_in | Power input to the device (±20V absolute maximum); a 1µF to 10µF bypass capacitor is sufficient and is required if more than six inches from the main input filter capacitor, and the SHDN function is internally connected to this pin on the LT1964-BYP. |
| 3 | BYP | passive | Reference bypass pin; a capacitor of up to 0.01µF from OUT to this pin reduces output noise to a typical 30µVRMS (10Hz to 100kHz), and it must be left unconnected if not used. |
| 4 | ADJ | input | Error amplifier input of the adjustable regulator, servoed to -1.22V with 30nA bias current flowing out of the pin, setting an output range of -1.22V to -20V, and it cannot be pulled more than 0.5V more negative than IN. |
| 5 | OUT | power_out | Regulator output supplying up to 200mA; requires a minimum 1µF output capacitor to prevent oscillations and cannot be pulled more than 0.5V more negative than IN during a fault. |

## Key specifications

| Parameter | Value |
|---|---|
| Manufacturer | Analog Devices |
| Package | SOT-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 |
|---|---|---|---|---|---|---|---|
| ADJ Pin Voltage | VADJ | -1.202 | -1.22 | -1.238 | V | VIN = -2V, ILOAD = -1mA | 3 |
| ADJ Pin Voltage (full range) | VADJ | -1.184 | -1.22 | -1.256 | V | -20V < VIN < -2.8V, -200mA < ILOAD < -1mA | 3 |
| Line Regulation |  |  | 1 | 12 | mV | LT1964 ΔVIN = -2.8V to -20V, ILOAD = -1mA | 3 |
| Load Regulation |  |  | 2 | 7 | mV | VIN = -2.8V, ΔILOAD = -1mA to -200mA | 3 |
| Load Regulation (full range) |  |  |  | 15 | mV | VIN = -2.8V, ΔILOAD = -1mA to -200mA | 3 |
| Dropout Voltage |  |  | 0.1 | 0.15 | V | ILOAD = -1mA | 3 |
| Dropout Voltage (full range) |  |  |  | 0.19 | V | ILOAD = -1mA | 3 |
| Dropout Voltage |  |  | 0.15 | 0.2 | V | ILOAD = -10mA | 3 |
| Dropout Voltage (full range) |  |  |  | 0.25 | V | ILOAD = -10mA | 3 |
| Dropout Voltage |  |  | 0.26 | 0.33 | V | ILOAD = -100mA | 3 |
| Dropout Voltage (full range) |  |  |  | 0.39 | V | ILOAD = -100mA | 3 |
| Dropout Voltage |  |  | 0.34 | 0.42 | V | ILOAD = -200mA | 3 |
| Dropout Voltage (full range) |  |  |  | 0.49 | V | ILOAD = -200mA | 3 |
| GND Pin Current |  |  | 30 | 70 | μA | ILOAD = 0mA | 3 |
| GND Pin Current |  |  | 85 | 180 | μA | ILOAD = -1mA | 3 |
| GND Pin Current |  |  | 300 | 600 | μA | ILOAD = -10mA | 3 |
| GND Pin Current |  |  | 1.3 | 3 | mA | ILOAD = -100mA | 3 |
| GND Pin Current |  |  | 2.5 | 6 | mA | ILOAD = -200mA | 3 |
| ADJ Pin Bias Current |  |  | 30 | 100 | nA |  | 4 |
| Minimum Input Voltage LT1964-BYP |  |  | -1.9 | -2.8 | V | ILOAD = -200mA | 4 |
| Ripple Rejection |  | 46 | 54 |  | dB | VIN - VOUT = -1.5V(Avg), VRIPPLE = 0.5VP-P, fRIPPLE = 120Hz, ILOAD = -200mA | 4 |
| Current Limit |  |  | 350 |  | mA | VIN = -6V, VOUT = 0V | 4 |
| Current Limit |  | 220 |  |  | mA | VIN = VOUT(NOMINAL) -1.5V, ΔVOUT = 0.1V | 4 |
| Input Reverse Leakage Current |  |  |  | 1 | mA | VIN = 20V, VOUT, VADJ, VSHDN = Open Circuit | 4 |
| Output Voltage Noise |  |  | 30 |  | μVRMS | COUT = 10μF, CBYP = 0.01μF, ILOAD = -200mA, BW = 10Hz to 100kHz | 4 |
| IN Pin Voltage |  | -20 |  | 20 | V |  | 2 |
| OUT Pin Voltage |  | -20 |  | 20 | V | Note 11 | 2 |
| OUT to IN Differential Voltage |  | -0.5 |  | 20 | V | Note 11 | 2 |
| ADJ Pin Voltage (with respect to IN) |  | -0.5 |  | 20 | V | Note 11 | 2 |
| BYP Pin Voltage (with respect to IN) |  | -20 |  | 20 | V |  | 2 |
| Operating Junction Temperature (I Grade) | TJ | -40 |  | 125 | °C | Note 10 | 2 |
| Storage Temperature Range |  | -65 |  | 150 | °C |  | 2 |
| Lead Temperature (Soldering, 10 sec) |  |  |  | 300 | °C | SOT-23 Package | 2 |
| Maximum Junction Temperature | TJMAX |  |  | 150 | °C | S5 package | 2 |
| Thermal Resistance Junction-to-Ambient | θJA | 125 |  | 250 | °C/W | S5 package, depends on board layout (Note 13) | 2 |
| Thermal Resistance Junction-to-Case | θJC |  | 60 |  | °C/W | SOT-23 package, measured at Pin 2 | 13 |

## CAD (KiCad official)

- Symbol: `LT1964IS5-BYP#TRPBF`
- Footprint: `Package_TO_SOT_SMD:SOT-23-5`
- 3D model: SOT-23-5 (KiCad packages3D, STEP)
- 3D model files: `lt1964is5-byp-trpbf-etched.step` / `lt1964is5-byp-trpbf-etched.glb` carry the MPN laser-etched on the die in a toggleable `Adom.LaserEtch` group (Fusion-ready); `lt1964is5-byp-trpbf.step` / `lt1964is5-byp-trpbf.glb` are the bare package body.

## Provenance

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

- **Datasheet:** [Analog Devices datasheet](https://www.analog.com/media/en/technical-documentation/data-sheets/1964fb.pdf) (16 pp, sha256 `59b030ab3c07c90b`, retrieved 2026-10-30, 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](docs/lt1964is5-byp-trpbf-datasheet.pdf)