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REF3440MDBVTEP

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Texas Instruments Voltage Reference, SOT-23-6. Pinout cross-checked by two models against the datasheet, KiCad symbol/footprint/3D.

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REF3440MDBVTEP

Texas Instruments · Voltage Reference · SOT-23-6

REF3440MDBVTEP from Texas Instruments, in a SOT-23-6. 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_F power_in Ground force connection for the reference; it can be tied to GND_S when Kelvin sensing is not used.
2 GND_S power_in Ground sense connection, a high-impedance line to the ground node that carries very little current when Kelvin connections are used.
3 ENABLE input Enable input: 1.6 V or higher turns the reference on, 0.5 V or lower puts it in shutdown, and it must not be pulled above the IN supply voltage.
4 IN power_in Supply input, which must be between VREF + VDO and 12 V (absolute maximum 13 V).
5 OUT_S output Reference voltage output sense connection, a high-impedance line used with OUT_F for Kelvin sensing of the output voltage.
6 OUT_F output Reference voltage output force connection, which sources and sinks up to ±10 mA of load current.

Key specifications

Parameter Value
Manufacturer Texas Instruments
Package SOT-23-6
Category Power Management (PMIC)
Pins 6

Electrical characteristics

Limits as printed in the datasheet (page.json metadata.characteristics carries them as data).

Parameter Symbol Min Typ Max Unit Conditions Page
Output voltage accuracy -0.05 0.05 % TA = 25°C 5
Output voltage temperature coefficient 2.5 10 ppm/°C –55°C ≤ TA ≤ 125°C 5
Line regulation (over temperature) ΔV(OΔVIN) 15 ppm/V VIN = VREF + VDO to 12 V, –55°C ≤ TA ≤ 125°C 5
Load regulation sourcing (over temperature) ΔV(OΔIL) 30 ppm/mA IL = 0 mA to 10 mA, VIN = 3 V, –55°C ≤ TA ≤ 125°C, sourcing 5
Load regulation sinking (over temperature) ΔV(OΔIL) 98 ppm/mA IL = 0 mA to –10 mA, VIN = VREF + VDO, –55°C ≤ TA ≤ 125°C, sinking 5
Absolute max input voltage IN IN 13 V 4
Absolute max output short circuit current 20 mA 4
Absolute max output voltage VREF VREF 5.5 V 4
Absolute max EN voltage EN -0.3 V Maximum is IN + 0.3 (not numeric) 4
Absolute max operating junction temperature Tj -55 150 °C Operating, Tj 4
Absolute max storage temperature Tstg -65 170 °C Storage 4
ESD human-body model V(ESD) -2500 2500 V HBM, per ANSI/ESDA/JEDEC JS-001 4
ESD charged-device model V(ESD) -1500 1500 V CDM, per JEDEC JESD22-C101 4
Recommended supply input voltage IN IN 12 V IL = 0 mA, TA = 25°C; minimum is VREF + VDO 4
Recommended enable voltage EN EN 0 V Maximum is IN (not numeric) 4
Recommended output current IL IL -10 10 mA 4
Recommended operating temperature Tj Tj -55 25 125 °C 4
Quiescent current active mode IQ 72 95 µA –55°C ≤ TA ≤ 125°C, active mode 6
Quiescent current shutdown mode IQ 2.5 3 µA –55°C ≤ TA ≤ 125°C, shutdown mode 6
Dropout voltage VDO 50 mV IL = 0 mA, TA = 25°C 6
Dropout voltage (over temperature, no load) VDO 100 mV IL = 0 mA, –55°C ≤ TA ≤ 125°C 6
Dropout voltage (over temperature, full load) VDO 500 mV IL = 10 mA, –55°C ≤ TA ≤ 125°C 6
ENABLE voltage active mode VEN 1.6 V Voltage reference in active mode (EN = 1) 6
ENABLE voltage shutdown mode VEN 0.5 V Voltage reference in shutdown mode (EN = 0) 6
ENABLE pin leakage current IEN 1 2 µA VEN = VIN = 12 V, –55°C ≤ TA ≤ 125°C 6
Output current capacity sourcing IL 10 mA VIN = VREF + VDO to 12 V, sourcing 6
Output current capacity sinking IL -10 mA VIN = VREF + VDO to 12 V, sinking 6
Input voltage VIN VIN 12 V VREF + VDO minimum (not numeric) 6
Output voltage VREF (REF3440) VREF 4.096 V REF3440-EP variant 6
Turn-on time tON 2.5 ms 0.1% of output voltage settling, CL = 10 µF 5
Stable output capacitor value CL CL 0.1 10 µF –55°C ≤ TA ≤ 125°C 5
Short-circuit current (output shorted to ground) ISC 18 22 mA VREF = 0, TA = 25°C; two printed values, column unlabeled 5
Load regulation sourcing 25°C ΔV(OΔIL) 20 ppm/mA IL = 0 mA to 10 mA, VIN = 3 V, TA = 25°C, sourcing 5
Load regulation sinking 25°C (REF3440-EP) ΔV(OΔIL) 48 ppm/mA IL = 0 mA to –10 mA, VIN = VREF + VDO, TA = 25°C, sinking 5
Load regulation sinking 25°C (second REF3440-EP entry) ΔV(OΔIL) 60 ppm/mA IL = 0 mA to –10 mA, VIN = VREF + VDO, TA = 25°C, sinking 5
Line regulation 25°C ΔV(OΔVIN) 2 ppm/V VIN = 2.55 V to 12 V, TA = 25°C 5
Output voltage noise 0.1 Hz to 10 Hz (REF3440-EP) en p-p 3.8 µV p-p/V f = 0.1 Hz to 10 Hz 5
Output voltage noise 10 Hz to 10 kHz en 24 µV rms f = 10 Hz to 10 kHz 5
Output voltage noise density 1 kHz (REF3440-EP) en 0.2 ppm/√Hz f = 1 kHz 5
Long-term stability 0 to 1000 hours 25 ppm 0 - 1000 hours at 35°C 5
Long-term stability 1000 to 2000 hours 10 ppm 1000 - 2000 hours at 35°C 5
Thermal resistance junction-to-ambient RθJA 185 °C/W 4
Thermal resistance junction-to-case (top) RθJC(top) 156 °C/W 4
Thermal resistance junction-to-board RθJB 29.6 °C/W 4
Junction-to-top characterization parameter ψJT 33.8 °C/W 4
Junction-to-board characterization parameter ψJB 29.1 °C/W 4

CAD (KiCad official)

  • Symbol: REF3440MDBVTEP
  • Footprint: Package_TO_SOT_SMD:SOT-23-6
  • 3D model: SOT-23-6 (KiCad packages3D, STEP)
  • 3D model files: ref3440mdbvtep-etched.step / ref3440mdbvtep-etched.glb carry the MPN laser-etched on the die in a toggleable Adom.LaserEtch group (Fusion-ready); ref3440mdbvtep.step / ref3440mdbvtep.glb are the bare package body.

Provenance

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

  • Datasheet: Texas Instruments datasheet (28 pp, sha256 b2f3431cb5d012bc, retrieved 2026-10-09, tier: lcsc)
  • Datasheet language: Chinese. Pin names, descriptions, and specs on this page were extracted and translated to English by ds2sf; the linked PDF is the manufacturer original.
  • 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