component
LTC1844ES5-SD#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.
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LTC1844ES5-SD#TRPBF
Analog Devices · Linear Voltage Regulators (LDO) · TSOT-23-5
LTC1844ES5-SD#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 | Power input for the regulator and load; the datasheet specifies VIN from 1.6V to 6.5V, absolute supply voltage of -7V to 7V, and the pin withstands reverse voltages, so a 0.1µF to 1µF bypass to ground is usually sufficient. |
| 2 | GND | power_in | Ground and heat sink; solder to a ground plane or large pad to maximize heat dissipation. |
| 3 | SHDN | input | Active-low shutdown input with a 0.35V to 0.9V threshold (0.65V typical) and typically less than 10nA pin current; it cannot be left floating and must be tied to the input pin if not used. |
| 4 | ADJ | input | Error amplifier input for the adjustable output, referenced to 1.25V with about 30nA bias current flowing into the pin, setting an output range of 1.25V to 6V through an external resistor divider from OUT to GND. |
| 5 | OUT | power_out | Voltage regulated output that supplies the load; a minimum 1µF output capacitor is required to ensure stability. |
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 |
|---|---|---|---|---|---|---|---|
| Input Voltage | VIN | 1.6 | 6.5 | V | ● full operating temperature range | 2 | |
| Quiescent Current | IIN | 35 | 55 | µA | SHDN = VIN | 2 | |
| Quiescent Current | IIN | 80 | µA | ● full operating temperature range | 2 | ||
| VIN Shutdown Supply Current | IINSHDN | 0.01 | 1 | µA | SHDN = 0V; ● full operating temperature range | 2 | |
| Regulated Output Voltage (LTC1844-SD) | VOUT% | -1.5 | 1.5 | %VOUT | VIN = 1.75V to 6.5V, IOUT = 0mA to 150mA | 3 | |
| Regulated Output Voltage (LTC1844-SD) | VOUT% | -1.75 | 1.75 | %VOUT | VIN = 2.2V to 6.5V, IOUT = 0mA to 150mA; ● full operating temperature range | 3 | |
| Regulated Output Voltage (LTC1844-SD) | VOUT% | -3.5 | 1.75 | %VOUT | VIN = 1.75V to 6.5V, IOUT = 0mA to 100mA; ● full operating temperature range | 3 | |
| ADJ Pin Voltage (LTC1844-SD) | VADJ | 1.233 | 1.25 | 1.271 | V | VIN = 1.75V to 6.5V, IOUT = 0mA to 150mA | 3 |
| ADJ Pin Voltage (LTC1844-SD) | VADJ | 1.23 | 1.274 | V | VIN = 2.2V to 6.5V, IOUT = 0mA to 150mA; ● full operating temperature range | 3 | |
| ADJ Pin Voltage (LTC1844-SD) | VADJ | 1.208 | 1.274 | V | VIN = 1.75V to 6.5V, IOUT = 0mA to 100mA; ● full operating temperature range | 3 | |
| Line Regulation (LTC1844-SD) | ∆VLNR | 4 | 20 | mV | VIN = 2.2V to 6.5V, IL = 1mA; ● full operating temperature range | 3 | |
| Line Regulation (LTC1844-SD) | ∆VLNR | 4 | 80 | mV | VIN = 1.6V to 6.5V, IL = 1mA; ● full operating temperature range | 3 | |
| Load Regulation (LTC1844-SD) | ∆VLDR | 9 | 20 | mV | VIN = 2.2V, IOUT = 0mA to 150mA; ● full operating temperature range | 3 | |
| Load Regulation (LTC1844-SD) | ∆VLDR | 9 | 50 | mV | VIN = 1.75V, IOUT = 0mA to 100mA; ● full operating temperature range | 3 | |
| Dropout Voltage (LTC1844-SD) | ∆VDO | 45 | 75 | mV | IOUT = 50mA; ● full operating temperature range | 4 | |
| Dropout Voltage (LTC1844-SD) | ∆VDO | 135 | 200 | mV | IOUT = 150mA; ● full operating temperature range | 4 | |
| Output Current Limit | ILIM | 160 | 350 | mA | ● full operating temperature range | 4 | |
| SHDN Input Threshold | VSHDN | 0.35 | 0.65 | 0.9 | V | ● full operating temperature range | 4 |
| Shutdown Exit Delay | tDELAY | 70 | 100 | µs | CBP = 0.01µF, COUT = 1µF, No load | 4 | |
| Shutdown Exit Delay | tDELAY | 200 | µs | CBP = 0.01µF, COUT = 1µF, No load; ● full operating temperature range | 4 | ||
| ADJ Pin Bias Current | IADJ | 30 | 100 | nA | ● full operating temperature range | 4 | |
| Input Reverse Leakage Current (LTC1844-SD) | IIRL | 1000 | 1500 | µA | VIN = -5V, VOUT = 0V; ● full operating temperature range | 4 | |
| Output Reverse Leakage Current | IORL | 0.01 | 0.1 | µA | VIN = 0V, VOUT = VOUT(NOMINAL) | 4 | |
| Output Reverse Leakage Current | IORL | 1.2 | µA | VIN = 0V, VOUT = VOUT(NOMINAL); ● full operating temperature range | 4 | ||
| Start-Up Overshoot | VOSH | 2 | %VOUT | RL = 1k, SHDN Rise Time ≤ 1µs | 4 | ||
| Supply Voltage (IN) | -7 | 7 | V | 2 | |||
| Input Voltage SHDN, BYP, ADJ | -0.3 | 7 | V | 2 | |||
| Output Voltage OUT | -0.3 | 7 | V | 2 | |||
| OUT to IN | -7 | 7 | V | 2 | |||
| Operating Junction Temperature Range | TJ | -40 | 125 | °C | Notes 2, 10 | 2 | |
| Storage Temperature Range | TSTG | -65 | 150 | °C | 2 | ||
| Lead Temperature (Soldering) | 300 | °C | 10 sec | 2 | |||
| Thermal resistance, junction-to-ambient | θJA | 250 | °C/W | TJMAX = 125°C (as printed in order information block) | 2 | ||
| Thermal resistance, junction-to-case | θJC | 90 | °C/W | 2 | |||
| Measured thermal resistance, junction-to-ambient | θJA | 125 | °C/W | Topside copper 2500mm2, backside 2500mm2, board area 2500mm2; still air, 3/32in FR-4, one ounce copper | 10 | ||
| Measured thermal resistance, junction-to-ambient | θJA | 130 | °C/W | Topside copper 225mm2, backside 2500mm2, board area 2500mm2; still air, 3/32in FR-4, one ounce copper | 10 | ||
| Measured thermal resistance, junction-to-ambient | θJA | 135 | °C/W | Topside copper 100mm2, backside 2500mm2, board area 2500mm2; still air, 3/32in FR-4, one ounce copper | 10 | ||
| Measured thermal resistance, junction-to-ambient | θJA | 150 | °C/W | Topside copper 50mm2, backside 2500mm2, board area 2500mm2; still air, 3/32in FR-4, one ounce copper | 10 |
CAD (KiCad official)
- Symbol:
LTC1844ES5-SD#TRPBF - Footprint:
Package_TO_SOT_SMD:TSOT-23-5 - 3D model: TSOT-23-5 (KiCad packages3D, STEP)
- 3D model files:
ltc1844es5-sd-trpbf-etched.step/ltc1844es5-sd-trpbf-etched.glbcarry the MPN laser-etched on the die in a toggleableAdom.LaserEtchgroup (Fusion-ready);ltc1844es5-sd-trpbf.step/ltc1844es5-sd-trpbf.glbare the bare package body.
Provenance
Data extracted from the manufacturer datasheet, not a distributor listing:
- Datasheet: Analog Devices datasheet (12 pp, sha256
286a8caaef25ce19, retrieved 2026-10-30, 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).
# LTC1844ES5-SD#TRPBF
**Analog Devices** · Linear Voltage Regulators (LDO) · TSOT-23-5
LTC1844ES5-SD#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 | Power input for the regulator and load; the datasheet specifies VIN from 1.6V to 6.5V, absolute supply voltage of -7V to 7V, and the pin withstands reverse voltages, so a 0.1µF to 1µF bypass to ground is usually sufficient. |
| 2 | GND | power_in | Ground and heat sink; solder to a ground plane or large pad to maximize heat dissipation. |
| 3 | SHDN | input | Active-low shutdown input with a 0.35V to 0.9V threshold (0.65V typical) and typically less than 10nA pin current; it cannot be left floating and must be tied to the input pin if not used. |
| 4 | ADJ | input | Error amplifier input for the adjustable output, referenced to 1.25V with about 30nA bias current flowing into the pin, setting an output range of 1.25V to 6V through an external resistor divider from OUT to GND. |
| 5 | OUT | power_out | Voltage regulated output that supplies the load; a minimum 1µF output capacitor is required to ensure stability. |
## 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 |
|---|---|---|---|---|---|---|---|
| Input Voltage | VIN | 1.6 | | 6.5 | V | ● full operating temperature range | 2 |
| Quiescent Current | IIN | | 35 | 55 | µA | SHDN = VIN | 2 |
| Quiescent Current | IIN | | | 80 | µA | ● full operating temperature range | 2 |
| VIN Shutdown Supply Current | IINSHDN | | 0.01 | 1 | µA | SHDN = 0V; ● full operating temperature range | 2 |
| Regulated Output Voltage (LTC1844-SD) | VOUT% | -1.5 | | 1.5 | %VOUT | VIN = 1.75V to 6.5V, IOUT = 0mA to 150mA | 3 |
| Regulated Output Voltage (LTC1844-SD) | VOUT% | -1.75 | | 1.75 | %VOUT | VIN = 2.2V to 6.5V, IOUT = 0mA to 150mA; ● full operating temperature range | 3 |
| Regulated Output Voltage (LTC1844-SD) | VOUT% | -3.5 | | 1.75 | %VOUT | VIN = 1.75V to 6.5V, IOUT = 0mA to 100mA; ● full operating temperature range | 3 |
| ADJ Pin Voltage (LTC1844-SD) | VADJ | 1.233 | 1.25 | 1.271 | V | VIN = 1.75V to 6.5V, IOUT = 0mA to 150mA | 3 |
| ADJ Pin Voltage (LTC1844-SD) | VADJ | 1.23 | | 1.274 | V | VIN = 2.2V to 6.5V, IOUT = 0mA to 150mA; ● full operating temperature range | 3 |
| ADJ Pin Voltage (LTC1844-SD) | VADJ | 1.208 | | 1.274 | V | VIN = 1.75V to 6.5V, IOUT = 0mA to 100mA; ● full operating temperature range | 3 |
| Line Regulation (LTC1844-SD) | ∆VLNR | | 4 | 20 | mV | VIN = 2.2V to 6.5V, IL = 1mA; ● full operating temperature range | 3 |
| Line Regulation (LTC1844-SD) | ∆VLNR | | 4 | 80 | mV | VIN = 1.6V to 6.5V, IL = 1mA; ● full operating temperature range | 3 |
| Load Regulation (LTC1844-SD) | ∆VLDR | | 9 | 20 | mV | VIN = 2.2V, IOUT = 0mA to 150mA; ● full operating temperature range | 3 |
| Load Regulation (LTC1844-SD) | ∆VLDR | | 9 | 50 | mV | VIN = 1.75V, IOUT = 0mA to 100mA; ● full operating temperature range | 3 |
| Dropout Voltage (LTC1844-SD) | ∆VDO | | 45 | 75 | mV | IOUT = 50mA; ● full operating temperature range | 4 |
| Dropout Voltage (LTC1844-SD) | ∆VDO | | 135 | 200 | mV | IOUT = 150mA; ● full operating temperature range | 4 |
| Output Current Limit | ILIM | 160 | | 350 | mA | ● full operating temperature range | 4 |
| SHDN Input Threshold | VSHDN | 0.35 | 0.65 | 0.9 | V | ● full operating temperature range | 4 |
| Shutdown Exit Delay | tDELAY | | 70 | 100 | µs | CBP = 0.01µF, COUT = 1µF, No load | 4 |
| Shutdown Exit Delay | tDELAY | | | 200 | µs | CBP = 0.01µF, COUT = 1µF, No load; ● full operating temperature range | 4 |
| ADJ Pin Bias Current | IADJ | | 30 | 100 | nA | ● full operating temperature range | 4 |
| Input Reverse Leakage Current (LTC1844-SD) | IIRL | | 1000 | 1500 | µA | VIN = -5V, VOUT = 0V; ● full operating temperature range | 4 |
| Output Reverse Leakage Current | IORL | | 0.01 | 0.1 | µA | VIN = 0V, VOUT = VOUT(NOMINAL) | 4 |
| Output Reverse Leakage Current | IORL | | | 1.2 | µA | VIN = 0V, VOUT = VOUT(NOMINAL); ● full operating temperature range | 4 |
| Start-Up Overshoot | VOSH | | | 2 | %VOUT | RL = 1k, SHDN Rise Time ≤ 1µs | 4 |
| Supply Voltage (IN) | | -7 | | 7 | V | | 2 |
| Input Voltage SHDN, BYP, ADJ | | -0.3 | | 7 | V | | 2 |
| Output Voltage OUT | | -0.3 | | 7 | V | | 2 |
| OUT to IN | | -7 | | 7 | V | | 2 |
| Operating Junction Temperature Range | TJ | -40 | | 125 | °C | Notes 2, 10 | 2 |
| Storage Temperature Range | TSTG | -65 | | 150 | °C | | 2 |
| Lead Temperature (Soldering) | | | | 300 | °C | 10 sec | 2 |
| Thermal resistance, junction-to-ambient | θJA | | 250 | | °C/W | TJMAX = 125°C (as printed in order information block) | 2 |
| Thermal resistance, junction-to-case | θJC | | 90 | | °C/W | | 2 |
| Measured thermal resistance, junction-to-ambient | θJA | | 125 | | °C/W | Topside copper 2500mm2, backside 2500mm2, board area 2500mm2; still air, 3/32in FR-4, one ounce copper | 10 |
| Measured thermal resistance, junction-to-ambient | θJA | | 130 | | °C/W | Topside copper 225mm2, backside 2500mm2, board area 2500mm2; still air, 3/32in FR-4, one ounce copper | 10 |
| Measured thermal resistance, junction-to-ambient | θJA | | 135 | | °C/W | Topside copper 100mm2, backside 2500mm2, board area 2500mm2; still air, 3/32in FR-4, one ounce copper | 10 |
| Measured thermal resistance, junction-to-ambient | θJA | | 150 | | °C/W | Topside copper 50mm2, backside 2500mm2, board area 2500mm2; still air, 3/32in FR-4, one ounce copper | 10 |
## CAD (KiCad official)
- Symbol: `LTC1844ES5-SD#TRPBF`
- Footprint: `Package_TO_SOT_SMD:TSOT-23-5`
- 3D model: TSOT-23-5 (KiCad packages3D, STEP)
- 3D model files: `ltc1844es5-sd-trpbf-etched.step` / `ltc1844es5-sd-trpbf-etched.glb` carry the MPN laser-etched on the die in a toggleable `Adom.LaserEtch` group (Fusion-ready); `ltc1844es5-sd-trpbf.step` / `ltc1844es5-sd-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/1844fa.pdf) (12 pp, sha256 `286a8caaef25ce19`, 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](docs/ltc1844es5-sd-trpbf-datasheet.pdf)