component

EA8421T6R

Public Made by Adom

by adom

Everanalog IC design DC-DC Converters, SOT-23-6. Pinout cross-checked by two models against the datasheet, KiCad symbol/footprint/3D.

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ea8421t6r-hero.glb ea8421t6r: hero GLB from the etched model (keeps the MPN mark) · Ray 24d ago
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EA8421T6R

Everanalog IC design · DC-DC Converters · SOT-23-6

EA8421T6R from Everanalog IC design, 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 BOOT power_in Power input of the internal high-side N-MOSFET gate driver; connect a 100nF ceramic capacitor from BOOT to SWITCH, with BOOT-to-SWITCH limited to VSWITCH-0.3V to VSWITCH+5V.
2 GND power_in Ground pin.
3 FBK input Feedback input; connect a voltage divider from VOUT to FBK and GND to set the output voltage (VREF 0.8V), with FBK pin voltage rated -0.3V to +6V.
4 RUN input On/off control input where VRUN above 2V enables the regulator and below 0.4V shuts it down; it must not be left floating and can be tied to PWR through 150kΩ for automatic startup, with a rating of -0.3V to +40V.
5 PWR power_in Input supply pin, operating from 5V to 40V, with a 10uF MLCC recommended between PWR and GND.
6 SWITCH output Internal MOSFET switching output that feeds the low-pass output filter (inductor and output capacitor), rated -1V to +45V and a high-current noise node.

Key specifications

Parameter Value
Manufacturer Everanalog IC design
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
Input Voltage VPWR 5 40 V 4
Shutdown Supply Current ISD 2 10 uA VRUN = 0V 4
Shutdown Supply Current ISD 20 uA TJ = -55°C to 125°C 4
Quiescent Current IQ 400 600 uA VRUN = 2V, VFBK = 105% VREF, ILOAD = 0A 4
Quiescent Current IQ 1 mA TJ = -55°C to 125°C 4
Reference Voltage VREF 0.784 0.8 0.816 V 5V ≤ VPWR ≤ 40V 4
High Side MOSFET On-Resistance RDS(ON)-HM 400 mΩ 4
Low Side MOSFET On-Resistance RDS(ON)-LM 250 mΩ 4
High Side MOSFET Current Limit ILIM-HM 2 A 4
High Side MOSFET Leakage Current ILEAK-HM 10 uA VRUN = 0V, VSWITCH = 0V 4
RUN Pin Input Low Voltage VRUN-L 0.4 V 4
RUN Pin Input High Voltage VRUN-H 2 V 4
Maximum Duty Cycle DMAX 92 % 4
High Side MOSFET Minimum On Time TONMIN 80 ns 4
Thermal Shutdown Threshold TOTP 160 °C 4
Switching Frequency FSW 600 KHz 4
RUN Pin Pull-Low Resistance RRUN 950 KΩ 4
Internal Soft-Start Time 1 ms 4
Input Voltage (VPWR) absolute maximum VPWR -0.3 45 V 3
RUN Pin Input Voltage (VRUN) absolute maximum VRUN -0.3 45 V 3
SWITCH Pin Voltage VSWITCH -1 45 V 3
FBK Pin Voltage VFBK -0.3 6 V 3
Junction Temperature Range TJ -55 125 °C 3
Maximum Junction Temperature TJmax 150 °C 3
Lead Temperature (Soldering) 260 °C 10 sec soldering 3
Storage Temperature Range TS -65 150 °C 3
ESD (HBM) 2 KV HBM 3
Input Voltage (VPWR) recommended VPWR 5 40 V 3
RUN Pin Input Voltage (VRUN) recommended VRUN -0.3 40 V 3
SOT-23-6 Thermal Resistance (junction-to-case) θJC 125 °C/W 3
SOT-23-6 Thermal Resistance (junction-to-ambient) θJA 250 °C/W 3
SOT-23-6 Power Dissipation at TA=25°C PDmax 0.5 W TA = 25°C 3

CAD (KiCad official)

  • Symbol: EA8421T6R
  • Footprint: Package_TO_SOT_SMD:SOT-23-6
  • 3D model: SOT-23-6 (KiCad packages3D, STEP)
  • 3D model files: ea8421t6r-etched.step / ea8421t6r-etched.glb carry the MPN laser-etched on the die in a toggleable Adom.LaserEtch group (Fusion-ready); ea8421t6r.step / ea8421t6r.glb are the bare package body.

Provenance

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

  • Datasheet: Everanalog IC design datasheet (9 pp, sha256 0ab11ff8c86d7383, retrieved 2026-10-17, 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