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RT9078-12GJ5

Public Made by Adom

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Richtek Tech Voltage Regulators - Linear, Low Drop Out (LDO) Regulators, TSOT-23-5. Pinout cross-checked by two models against the datasheet, KiCad symbol/footprint/3D.

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RT9078-12GJ5

Richtek Tech · Voltage Regulators - Linear, Low Drop Out (LDO) Regulators · TSOT-23-5

RT9078-12GJ5 from Richtek Tech, 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 VIN power_in Regulator input pin; the input capacitor should be placed directly at this pin.
2 GND power_in Ground pin for the regulator.
3 EN input Chip enable pin; pulling this pin below 0.4V turns the regulator off, reducing the quiescent current to a fraction of its operating value.
4 NC unconnected No internal connection on the RT9078 (the SNS voltage-sense function on this pin applies only to the RT9078N variant).
5 VOUT power_out Regulator output pin; the output capacitor should be placed directly at this pin.

Key specifications

Parameter Value
Manufacturer Richtek Tech
Package TSOT-23-5
Category Power Management (PMIC)
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 VIN 1.2 5.5 V 5
Junction Temperature Range -40 125 °C 5
VIN, VOUT, SNS, EN to GND -0.3 6.5 V 5
VOUT to VIN -6.5 0.3 V 5
Power Dissipation, TSOT-23-5 PD 0.43 W TA = 25°C 5
Lead Temperature (Soldering, 10 sec.) 260 °C 10 sec soldering 5
Junction Temperature 150 °C 5
Storage Temperature Range -65 150 °C 5
ESD Susceptibility HBM 2 kV Human Body Model 5
Package Thermal Resistance TSOT-23-5, junction to ambient θJA 230.6 °C/W JEDEC 51-7 four-layer board, TA = 25°C 5
Package Thermal Resistance TSOT-23-5, junction to case θJC 21.8 °C/W 5
Fixed Output Voltage Range VOUT 0.8 3.45 V VOUT + 1 < VIN < 5.5V, TA = 25°C, unless otherwise specified 5
DC Output Accuracy -2 2 % ILOAD = 1mA; VIN = VOUT + 1 < 5.5V, TA = 25°C 5
Dropout Voltage (ILOAD = 300mA), 1.05V < VOUT ≤ 1.2V row VDROP 0.5 0.92 V ILOAD = 300mA; applies if VOUT = 1.2V (range boundary symbol lost in extraction) 5
Dropout Voltage (ILOAD = 300mA), 1.2V < VOUT ≤ 1.5V row VDROP 0.4 0.57 V ILOAD = 300mA; applies if VOUT = 1.2V (range boundary symbol lost in extraction) 5
VCC Consumption Current IQ 2 4 μA ILOAD = 0mA, VOUT ≤ 5.5V, VIN ≥ VOUT + VDROP 5
Shutdown GND Current 0.1 0.5 μA VEN = 0V 6
Shutdown Leakage Current 0.1 0.5 μA VEN = 0V, VOUT = 0V 6
EN Input Current IEN 0.1 μA VEN = 5.5V 6
Line Regulation (1.2V ≤ VIN ≤ 1.5V) LINE 0.3 0.6 % ILOAD = 1mA 6
Line Regulation (1.5V ≤ VIN ≤ 1.8V) LINE 0.15 0.3 % ILOAD = 1mA 6
Line Regulation (1.8V ≤ VIN ≤ 5.5V) LINE 0.13 0.35 % ILOAD = 1mA 6
Load Regulation LOAD 0.5 1 % 1mA < ILOAD < 300mA 6
Output Current Limit ILIM 350 600 mA VOUT = 90% of VOUT(NOM) 6
Enable Threshold Voltage H-Level VENH 0.5 0.7 0.9 V VIN = 5V 6
Enable Threshold Voltage L-Level VENL 0.4 0.65 0.85 V VIN = 5V 6

CAD (KiCad official)

  • Symbol: RT9078-12GJ5
  • Footprint: Package_TO_SOT_SMD:TSOT-23-5
  • 3D model: TSOT-23-5 (KiCad packages3D, STEP)
  • 3D model files: rt9078-12gj5-etched.step / rt9078-12gj5-etched.glb carry the MPN laser-etched on the die in a toggleable Adom.LaserEtch group (Fusion-ready); rt9078-12gj5.step / rt9078-12gj5.glb are the bare package body.

Provenance

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

  • Datasheet: Richtek Tech datasheet (16 pp, sha256 58b21b14eba5e089, 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