component

RT4812GJ8F

Public Made by Adom

by adom

Richtek Tech DC-DC Converters, TSOT-23-8. Pinout cross-checked by two models against the datasheet, KiCad symbol/footprint/3D.

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docs Publish 0.1.0 · Ray 1mo ago
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package.json Publish 0.1.0 · Ray 1mo ago
page.json rt4812gj8f: specified limits as data (metadata.characteristics, 30 rows from the datasheet) · Ray 26d ago
README.md rt4812gj8f: specified limits as data (metadata.characteristics, 30 rows from the datasheet) · Ray 26d ago
rt4812gj8f-etched.glb rt4812gj8f: factory component page (tier=lcsc) · Ray 1mo ago
rt4812gj8f-etched.step rt4812gj8f: factory component page (tier=lcsc) · Ray 1mo ago
rt4812gj8f-hero.glb rt4812gj8f: hero GLB from the etched model (keeps the MPN mark) · Ray 1mo ago
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rt4812gj8f.step Publish 0.1.0 · Ray 1mo ago

RT4812GJ8F

Richtek Tech · DC-DC Converters · TSOT-23-8

RT4812GJ8F from Richtek Tech, in a TSOT-23-8. 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 Power input with a recommended operating range of 1.8V to 5.5V; the input capacitor CIN must be placed as close to the IC as possible.
2 FB input Voltage feedback input; the regulated FB voltage is typically 0.5V (0.495V to 0.505V), with the resistive divider connected between VOUT, FB and GND.
3 VOUT power_out Boost converter output with a 1.8V to 5.5V output voltage range and a 6.2V absolute maximum to GND.
4 PGND power_in Power ground for the boost power stage; the datasheet gives no further limits for this pin.
5 GND power_in Analog ground; the datasheet gives no further limits for this pin.
6 SW output Switching node of the boost converter, rated -0.2V to 6V to GND in the absolute maximum ratings.
7 EN input Enable input (1 = enabled, 0 = disabled) that must not be left floating, with VIL maximum 0.4V and VIH minimum 1.2V.
8 ILIM input Average output current limit control pin (H/L): low selects a minimum 1A limit and high selects a minimum 2.1A limit.

Key specifications

Parameter Value
Manufacturer Richtek Tech
Package TSOT-23-8
Category Power Management (PMIC)
Pins 8

Electrical characteristics

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

Parameter Symbol Min Typ Max Unit Conditions Page
Supply Voltage VIN 1.8 5.5 V VIN vs VOUT, 0.2V margin (comparison operators lost in extraction) 5
Output Voltage VOUT 1.8 5.5 V VIN vs VOUT, 0.2V margin (comparison operators lost in extraction) 5
Under-Voltage Lockout Rising Threshold UVLO_RISE 1.5 1.65 1.8 V 5
Under-Voltage Lockout Falling Threshold UVLO_Falling 1.3 1.55 1.7 V 5
FB Voltage VFB 0.495 0.5 0.505 V Force PWM 5
Regulated DC VOUT Voltage VOUT 2 4 % 1.8 VIN VOUT 0.2V (comparison operators lost in extraction), IOUT = 0mA (PSM) 5
Shutdown Current ISHDN 0.1 1 μA EN = 0V 5
Average Output Current Limit ILIM 1 A ILIM = L 5
Average Output Current Limit ILIM 2.1 A ILIM = H 5
FB Pin Input Leakage IFB -1 1 μA 6
Leakage of SW ISW 5 μA All switch off 6
Line Regulation VOUT, LINE -2 2 % VIN = 2.7V to 4.5V, VOUT = 5V, IOUT = 1500mA 6
Load Regulation VOUT, LOAD -1.5 1.5 % CCM, IOUT 2A (operator lost in extraction), VIN = 3.6V, VOUT = 5V 6
Output Over Voltage Protection VOVP 5.8 6 6.2 V 6
EN Input Low Voltage VIL 0.4 V 6
EN Input High Voltage VIH 1.2 V 6
EN Sink Current 0.1 1 μA 6
Input/Output Pin Voltage (VIN, FB, ILIM, EN, SW to GND) -0.2 6 V to GND 5
VOUT to GND 6.2 V to GND 5
Power Dissipation PD 1.78 W TSOT-23-8 (FC), TA = 25C 5
Lead Temperature (Soldering) 260 °C 10 sec. soldering 5
Junction Temperature TJ -65 150 °C 5
Storage Temperature Range TSTG -65 150 °C 5
ESD Susceptibility HBM 2 kV HBM (Human Body Model) 5
Input Voltage Range VIN 1.8 5.5 V 5
Output Voltage Range VOUT 1.8 5.5 V 5
Junction Temperature (TJ) Range TJ -40 125 °C 5
Ambient Temperature (TA) Range TA -40 85 °C 5
Junction-to-Ambient Thermal Resistance θJA 56 C/W TSOT-23-8 (FC) 5
Junction-to-Case Thermal Resistance θJC 28 C/W TSOT-23-8 (FC) 5

CAD (KiCad official)

  • Symbol: RT4812GJ8F
  • Footprint: Package_TO_SOT_SMD:TSOT-23-8
  • 3D model: TSOT-23-8 (KiCad packages3D, STEP)
  • 3D model files: rt4812gj8f-etched.step / rt4812gj8f-etched.glb carry the MPN laser-etched on the die in a toggleable Adom.LaserEtch group (Fusion-ready); rt4812gj8f.step / rt4812gj8f.glb are the bare package body.

Provenance

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

  • Datasheet: Richtek Tech datasheet (15 pp, sha256 2ebb84194f552969, retrieved 2026-10-09, 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