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AS7812AT-E1

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Diodes Incorporated Voltage Regulators - Linear, Low Drop Out (LDO) Regulators, TO-220. Pinout extracted from the datasheet, KiCad symbol/footprint/3D.

componentpower management (pmic)as7812at-e1
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Contents

README

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AS7812AT-E1

Diodes Incorporated · Voltage Regulators - Linear, Low Drop Out (LDO) Regulators · TO-220

AS7812AT-E1 from Diodes Incorporated, in a TO-220. Pinout and pin descriptions extracted from the manufacturer datasheet by ds2sf; symbol, footprint, and 3D from KiCad-official CAD.

Pinout

Pin Name Type Function
1 INPUT power_in Unregulated positive supply input. Recommended operating input voltage up to 32 V (absolute max 36 V). Bypass to GND with a 0.33 µF ceramic capacitor close to the pin for stability.
2 GND power_in Device ground / common reference for both input and output. On TO-220 the tab is electrically connected to this pin.
3 OUTPUT power_out Regulated +12 V output (11.75-12.25 V typ at TJ=25°C, IOUT up to 1 A). Requires a 0.1 µF output capacitor to GND for transient response; internally current-limited and protected by thermal shutdown and safe-area protection.

Key specifications

Parameter Value
Manufacturer Diodes Incorporated
Package TO-220
Category Power Management (PMIC)
Pins 3

Ordering variants

Same part, different packaging or reel option.

  • AS7812AT-E1
  • AS7812AT-E1ADTR-G1

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 (TJ = +25°C) VOUT 11.75 12 12.25 V TJ = +25°C 6
Output Voltage (over line, load and temperature) VOUT 11.5 12.5 V IOUT = 5mA to 1A, VIN = 14.8V to 27V, PD ≤ 15W 6
Line Regulation VRLINE 25 120 mV VIN = 14.8V to 27V, IOUT = 500mA, TJ = +25°C 6
Load Regulation VRLOAD 40 120 mV VIN = 19V, IOUT = 5mA to 1A, TJ = +25°C 6
Quiescent Current IQ 3.4 6 mA VIN = 19V, IOUT = 0 6
Quiescent Current Change (line) ΔIQ 0.3 0.8 mA VIN = 14.8V to 30V, IOUT = 500mA, TJ = +25°C 6
Quiescent Current Change (load) ΔIQ 0.08 0.5 mA IOUT = 5mA to 1A, TJ = +25°C 6
Input Voltage (recommended operating) VIN 32 V AS7812A 4
Operating Junction Temperature Range TJ -40 125 °C 4
Input Voltage (absolute maximum) VIN 36 V 4
Lead Temperature (soldering) TLEAD 260 °C Soldering, 10 sec 4
Operating Junction Temperature (absolute maximum) TJ 150 °C 4
Storage Temperature Range TSTG -65 150 °C 4
Thermal Resistance Junction-to-Ambient (TO-220-3 / TO-220-3 (2)) θJA 60 °C/W 4
ESD Human Body Model ESD 6000 V Human Body Model 4
ESD Machine Model ESD 500 V Machine Model 4
Thermal Resistance Junction-to-Case (TO-220-3 / TO-220-3 (2)) θJC 9 °C/W 6

CAD (KiCad official)

  • Symbol: AS7812AT-E1
  • Footprint: Package_TO_SOT_THT:TO-220-3_Vertical
  • 3D model: TO-220 (KiCad packages3D, STEP)
  • 3D model files: as7812at-e1-etched.step / as7812at-e1-etched.glb carry the MPN laser-etched on the die in a toggleable Adom.LaserEtch group (Fusion-ready); as7812at-e1.step / as7812at-e1.glb are the bare package body.

Provenance

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

  • Datasheet: Diodes Incorporated datasheet (19 pp, sha256 a3112666d50a186d, retrieved 2026-08-17, tier: lcsc)
  • Extractor: ds2sf (Claude). Every pin and dimension is cited to a datasheet page; it refuses to fabricate.
  • CAD: KiCad official libraries (CC-BY-SA 4.0).

Datasheet PDF