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TPS78401DBVR

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Texas Instruments Pre-ordered Chips, SOT-23-5. Pinout cross-checked by two models against the datasheet, KiCad symbol/footprint/3D.

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TPS78401DBVR

Texas Instruments · Pre-ordered Chips · SOT-23-5

TPS78401DBVR from Texas Instruments, 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 IN power_in Input supply pin (1.65 V to 6.0 V operating range); use the recommended value or larger ceramic capacitor from IN to ground, placed as close to the device as possible.
2 GND power_in Ground pin that must be connected to ground on the board.
3 EN input Enable pin: logic high enables the device and logic low disables it; do not float this pin, and connect EN to IN if not used.
4 FB input Feedback input to the control-loop error amplifier, used with external resistors to set the output voltage (1.2 V to 5.5 V adjustable range); do not float this pin.
5 OUT power_out Regulated output pin requiring 0.47 µF or greater effective capacitance to ground for stability, with a 1-µF or larger ceramic capacitor recommended for best transient response, placed close to the device.

Key specifications

Parameter Value
Manufacturer Texas Instruments
Package SOT-23-5
Category Interface 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 1.65 6 V 5
Output voltage VOUT 1.2 5.5 V 5
Input capacitor CIN 1 µF 5
Output capacitor COUT 1 200 µF minimum effective capacitance is 0.47 µF 5
Output current IOUT 0 300 mA 5
Output capacitor ESR COUT,ESR 0.001 1 Ω 5
Enable voltage VEN 0 6 V 5
Enable toggle frequency FEN 10 kHz 5
Junction temperature TJ -40 150 °C 5
Supply voltage VIN -0.3 6.5 V 4
Enable voltage VEN -0.3 6.5 V 4
Output voltage VOUT -0.3 6.5 V VIN + 0.3 V or 6.5 V, whichever is smaller 4
Feedback voltage VFB -0.3 2 V 4
Operating junction temperature TJ -40 150 °C 4
Storage temperature Tstg -65 150 °C 4
ESD HBM V(ESD) -2000 2000 V HBM, all pins 4
ESD CDM V(ESD) -500 500 V CDM, all pins 4
Output accuracy VOUT -0.5 0.5 % 1 mA ≤ IOUT ≤ 300 mA, VOUT(NOM) + 0.5 V ≤ VIN ≤ 6.0 V, TJ = 25°C 6
Output accuracy VOUT -0.75 0.75 % 1 mA ≤ IOUT ≤ 300 mA, VOUT(NOM) + 0.5 V ≤ VIN ≤ 6.0 V, -40°C ≤ TJ ≤ 85°C 6
Output accuracy VOUT -1 1 % 1 mA ≤ IOUT ≤ 300 mA, VOUT(NOM) + 0.5 V ≤ VIN ≤ 6.0 V, 85°C ≤ TJ ≤ 150°C 6
Load regulation -5 5 mV 0.1 mA ≤ IOUT ≤ 300 mA, TJ = 25°C 6
Load regulation -5 10 mV 0.1 mA ≤ IOUT ≤ 300 mA, -40°C ≤ TJ ≤ 150°C 6
Ground current IGND 15 25 30 µA TJ = 25°C, IOUT = 0 mA 6
Ground current IGND 35 µA IOUT = 0 mA 6
Shutdown current ISHDN 0.15 1 µA VEN ≤ 0.3 V, 1.65 V ≤ VIN ≤ 6.0 V, TJ = 25°C 6
Shutdown current ISHDN 1 µA VEN ≤ 0.3 V, 1.65 V ≤ VIN ≤ 6.0 V, -40°C ≤ TJ ≤ 85°C 6
Shutdown current ISHDN 3 µA VEN ≤ 0.3 V, 1.65 V ≤ VIN ≤ 6.0 V, -40°C ≤ TJ ≤ 150°C 6
Feedback voltage VFB 1.182 1.2 1.218 V 6
Feedback pin current IFB -0.1 0.01 0.05 µA 6
Output current limit ICL 320 460 mA VIN = VOUT(NOM) + 1 V, VOUT = 0.9 x VOUT(NOM) 6
Short-circuit current limit ISC 175 mA VOUT = 0 V 6
Dropout voltage VDO 300 mV IOUT = 300 mA, VOUT = 0.95 x VOUT(NOM), 1.2 V ≤ VOUT < 1.5 V 6
Dropout voltage VDO 175 mV IOUT = 300 mA, VOUT = 0.95 x VOUT(NOM), 1.5 V ≤ VOUT < 1.8 V 6
Dropout voltage VDO 140 mV IOUT = 300 mA, VOUT = 0.95 x VOUT(NOM), 1.8 V ≤ VOUT < 2.5 V 6
Dropout voltage VDO 115 mV IOUT = 300 mA, VOUT = 0.95 x VOUT(NOM), 2.5 V ≤ VOUT ≤ 5.0 V 6
Undervoltage lockout rising VUVLO,rising 1.32 1.42 1.6 V VIN rising 6
Undervoltage lockout falling VUVLO,falling 1.17 1.29 1.42 V VIN falling 6
Startup time tSTR 500 780 µs From EN low-to-high transition to VOUT = VOUT(NOM) x 95% 6
EN pin high voltage (enabled) VEN(HI) 0.85 V 6
EN pin low voltage (enabled) VEN(LO) 0.425 V 6
Line regulation 0.3 mV VOUT(NOM) + 0.5 V ≤ VIN ≤ 6.0 V 6
UVLO hysteresis VUVLO,HYST 130 mV VIN hysteresis 6
Enable pin current IEN 10 nA VIN = VEN = 6.0 V 6
Pulldown resistance RPULLDOWN 100 Ω VIN = 3.3 V 6
PSRR PSRR 52 dB VOUT = 3.3 V, IOUT = 300 mA, VIN = VOUT(NOM) + 1 V, f = 1 kHz 6
Output noise voltage Vn 30 µVRMS BW = 10 Hz to 100 kHz, VOUT = 1.2 V 6
Thermal shutdown temperature TSD(shutdown) 170 °C Shutdown, temperature increasing 7
Thermal shutdown reset temperature TSD(reset) 160 °C Reset, temperature decreasing 7
Junction-to-ambient thermal resistance RθJA 170.8 °C/W DBV (SOT-23), 5 pins 5
Junction-to-case (top) thermal resistance RθJC(top) 93.1 °C/W DBV (SOT-23), 5 pins 5
Junction-to-board thermal resistance RθJB 10.2 °C/W DBV (SOT-23), 5 pins 5
Junction-to-top characterization parameter ψJT 17.5 °C/W DBV (SOT-23), 5 pins 5
Junction-to-board characterization parameter ψJB 40 °C/W DBV (SOT-23), 5 pins 5

CAD (KiCad official)

  • Symbol: TPS78401DBVR
  • Footprint: Package_TO_SOT_SMD:SOT-23-5
  • 3D model: SOT-23-5 (KiCad packages3D, STEP)
  • 3D model files: tps78401dbvr-etched.step / tps78401dbvr-etched.glb carry the MPN laser-etched on the die in a toggleable Adom.LaserEtch group (Fusion-ready); tps78401dbvr.step / tps78401dbvr.glb are the bare package body.

Provenance

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

  • Datasheet: Texas Instruments datasheet (35 pp, sha256 1256cad447f081c0, retrieved 2026-10-22, tier: lcsc)
  • 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