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LT1963AEST-3.3#TRPBF

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Analog Devices Voltage Regulators - Linear, Low Drop Out (LDO) Regulators, SOT-223-3. Pinout cross-checked by two models against the datasheet, KiCad symbol/footprint/3D.

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LT1963AEST-3.3#TRPBF

Analog Devices · Voltage Regulators - Linear, Low Drop Out (LDO) Regulators · SOT-223-3

LT1963AEST-3.3#TRPBF from Analog Devices, in a SOT-223-3. 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 that powers the regulator; a 1µF to 10µF bypass capacitor is advised when the device is more than six inches from the main input filter capacitor, and the IN pin voltage absolute maximum is ±20V.
2 GND power_in Ground reference pin, also connected to the exposed tab; the datasheet gives no separate pin-function description for GND.
3 OUT power_out Regulated output that supplies the load and requires a minimum 10µF output capacitor to prevent oscillations, with an OUT pin voltage absolute maximum of ±20V.

Key specifications

Parameter Value
Manufacturer Analog Devices
Package SOT-223-3
Category Power Management (PMIC)
Pins 3

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 (LT1963A-3.3, 25°C) 3.25 3.3 3.35 V VIN = 3.8V, ILOAD = 1mA 5
Regulated Output Voltage (LT1963A-3.3, full operating temperature range) 3.2 3.3 3.4 V 4.3V < VIN < 20V, 1mA < ILOAD < 1.5A; full operating temperature range 5
Minimum Input Voltage (full operating temperature range) 2.1 2.5 V ILOAD = 1.5A 5
Line Regulation (LT1963A-3.3) 3.5 10 mV ΔVIN = 3.8V to 20V, ILOAD = 1mA 5
Load Regulation (LT1963A-3.3, 25°C) 3 20 mV VIN = 4.3V, ΔILOAD = 1mA to 1.5A 5
Load Regulation (LT1963A-3.3, full operating temperature range) 35 mV VIN = 4.3V, ΔILOAD = 1mA to 1.5A; full operating temperature range 5
Dropout Voltage (25°C) 0.02 0.06 V VIN = VOUT(NOMINAL), ILOAD = 1mA 5
Dropout Voltage (full operating temperature range) 0.1 V VIN = VOUT(NOMINAL), ILOAD = 1mA; full operating temperature range 5
Dropout Voltage (25°C) 0.1 0.17 V VIN = VOUT(NOMINAL), ILOAD = 100mA 5
Dropout Voltage (full operating temperature range) 0.22 V VIN = VOUT(NOMINAL), ILOAD = 100mA; full operating temperature range 5
Dropout Voltage (25°C) 0.19 0.27 V VIN = VOUT(NOMINAL), ILOAD = 500mA 5
Dropout Voltage (full operating temperature range) 0.35 V VIN = VOUT(NOMINAL), ILOAD = 500mA; full operating temperature range 5
Dropout Voltage (25°C) 0.34 0.45 V VIN = VOUT(NOMINAL), ILOAD = 1.5A 5
Dropout Voltage (full operating temperature range) 0.55 V VIN = VOUT(NOMINAL), ILOAD = 1.5A; full operating temperature range 5
GND Pin Current 1 1.5 mA VIN = VOUT(NOMINAL) + 1V, ILOAD = 0mA; full operating temperature range 5
GND Pin Current 1.1 1.6 mA VIN = VOUT(NOMINAL) + 1V, ILOAD = 1mA; full operating temperature range 5
GND Pin Current 3.8 5.5 mA VIN = VOUT(NOMINAL) + 1V, ILOAD = 100mA; full operating temperature range 5
GND Pin Current 15 25 mA VIN = VOUT(NOMINAL) + 1V, ILOAD = 500mA; full operating temperature range 5
GND Pin Current 80 120 mA VIN = VOUT(NOMINAL) + 1V, ILOAD = 1.5A; full operating temperature range 5
Shutdown Threshold (VOUT Off to On) 0.25 0.9 V VOUT = Off to On; full operating temperature range 5
Shutdown Threshold (VOUT On to Off) 0.75 2 V VOUT = On to Off; full operating temperature range 5
SHDN Pin Current 0.01 1 µA VSHDN = 0V 5
SHDN Pin Current 3 30 µA VSHDN = 20V 5
Quiescent Current in Shutdown 0.01 1 µA VIN = 6V, VSHDN = 0V 5
Ripple Rejection 55 63 dB VIN, VOUT = 1.5V (Avg), VRIPPLE = 0.5VP-P, fRIPPLE = 120Hz, ILOAD = 0.75A 6
Current Limit (full operating temperature range) 1.6 A VIN = VOUT(NOMINAL) + 1V, ΔVOUT = -0.1V; full operating temperature range 6
Current Limit (25°C) 2 A VIN = 7V, VOUT = 0V 6
Input Reverse Leakage Current (ST package) 2 mA ST Package, VIN = -20V, VOUT = 0; full operating temperature range 6
Reverse Output Current (LT1963A-3.3) 600 1200 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 Note 2 2
SENSE Pin Voltage -20 20 V 2
SHDN Pin Voltage -20 20 V 2
Operating Junction Temperature Range (LT1963AE) TJ -40 125 °C Note 3 2
Storage Temperature Range -65 150 °C 2
Lead Temperature (Soldering) 300 °C Soldering, 10 sec 2
Maximum Junction Temperature (ST package) TJMAX 150 °C SOT-223 (ST) package 2
Thermal Resistance Junction-to-Ambient (ST package, pin configuration) θJA 50 °C/W SOT-223 (ST) package 2
Thermal Resistance Junction-to-Ambient (SOT-223) θJA 42 °C/W Topside 2500mm2, backside 2500mm2, board area 2500mm2 19
Thermal Resistance Junction-to-Ambient (SOT-223) θJA 50 °C/W Topside 225mm2, backside 2500mm2, board area 2500mm2 19
Thermal Resistance Junction-to-Ambient (SOT-223) θJA 56 °C/W Topside 100mm2, backside 2500mm2, board area 2500mm2 19
Thermal Resistance Junction-to-Ambient (SOT-223) θJA 49 °C/W Topside 1000mm2, backside 1000mm2, board area 1000mm2 19
Thermal Resistance Junction-to-Ambient (SOT-223) θJA 52 °C/W Topside 1000mm2, backside 0mm2, board area 1000mm2 19

Materials and finish

As the datasheet states them (page.json metadata.appearance; the 3D model's colours follow it).

Part Material Colour / plating Datasheet says Page
contacts COPPER Table 3. Q Package, 5-Lead DD COPPER AREA THERMAL RESISTANCE 19

CAD (KiCad official)

  • Symbol: LT1963AEST-3.3#TRPBF
  • Footprint: Package_TO_SOT_SMD:SOT-223-3_TabPin2
  • 3D model: SOT-223-3 (KiCad packages3D, STEP)
  • 3D model files: lt1963aest-3-3-trpbf-etched.step / lt1963aest-3-3-trpbf-etched.glb carry the MPN laser-etched on the die in a toggleable Adom.LaserEtch group (Fusion-ready); lt1963aest-3-3-trpbf.step / lt1963aest-3-3-trpbf.glb are the bare package body.

Provenance

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

  • Datasheet: Analog Devices datasheet (28 pp, sha256 a826955aaff1605b, retrieved 2026-10-18, tier: lcsc)
  • 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