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Contents

README

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VRD1228MTX

AnaSem · Voltage Regulators - Linear, Low Drop Out (LDO) Regulators · SOT-23-6

VRD1228MTX from AnaSem, 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 EN1 input Channel 1 enable input: the EN high level is 1.2 V to 6.0 V and the EN low level is 0.3 V max; setting EN to VSS shuts channel 1 down and discharges CL through the 160 Ω auto-discharge resistor.
2 VIN power_in Voltage input with an operating range of 1.6 V to 6.0 V and an absolute maximum range of -0.3 V to +7.0 V, with at least 1.0 µF recommended between VIN and VSS.
3 EN2 input Channel 2 enable input: the EN high level is 1.2 V to 6.0 V and the EN low level is 0.3 V max; setting EN to VSS shuts channel 2 down and discharges CL through the 160 Ω auto-discharge resistor.
4 VOUT2 power_out Channel 2 regulated output, which must not exceed VIN+0.3 V, with an output capacitor of at least 1.0 µF (ceramic, low ESR) connected as close as possible between VOUT and VSS.
5 VSS power_in Power ground, the common return for VIN, the output capacitors and the EN pins.
6 VOUT1 power_out Channel 1 regulated output, which must not exceed VIN+0.3 V, with an output capacitor of at least 1.0 µF (ceramic, low ESR) connected as close as possible between VOUT and VSS.

Key specifications

Parameter Value
Manufacturer AnaSem
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
Output voltage accuracy, Ch-1 (VOUT≦1.90 V) VOUT -20 20 mV VOUT≦1.90V; VOUT+1.0V≦VIN≦6.0V, IOUT=30mA, Ta=-40°C~+85°C 7
Output voltage accuracy, Ch-2 (VOUT≧1.95 V) VOUT -1 1 % VOUT≧1.95V; VOUT+1.0V≦VIN≦6.0V, IOUT=30mA, Ta=-40°C~+85°C 7
Output voltage temperature coefficient ΔVOUT/ΔTa•VOUT -20 20 ppm/°C VEN=VIN, IOUT=300mA, Ta=-40°C~+85°C 8
Dropout voltage, Ch-1 (1.2 V≦VOUT≦1.65 V) VDROP 210 340 mV IOUT=100mA, 1.2V≦VOUT≦1.65V 7
Dropout voltage, Ch-2 (2.3 V≦VOUT≦2.85 V) VDROP 100 150 mV IOUT=100mA, 2.3V≦VOUT≦2.85V 7
Load regulation ΔVOUT 10 40 mV VIN=VOUT+1.0V, IOUT=0.1mA~100mA 8
Line regulation ΔVOUT/ΔVIN•VOUT 0.01 0.1 %/V VOUT+1.0V≦VIN≦6.0V, IOUT=30mA 8
Current consumption IDD 50 80 µA VIN=VOUT+1.0V, VOUT=Open, IOUT=0mA 8
Standby current ISTB 0.01 0.1 µA EN=VSS 8
Input voltage VIN 1.6 6 V 8
Limit current ILIMIT 300 mA EN=VIN 8
EN high level voltage VENH 1.2 6 V 8
EN low level voltage VENL 0.3 V 8
EN high level current IENH -0.1 0.1 µA VEN=VIN 8
EN low level current IENL -0.1 0.1 µA VEN=VSS 8
Input voltage range (absolute maximum) VIN -0.3 7 V 6
Output current (absolute maximum) IOUT 500 mA 6
Power dissipation, SOT-26 PD 600 mW SOT-26 package; depends on board mounting (PCB 50×50×1.6 mm) 6
Operating temperature range TOPR -40 85 °C 6
Storage temperature range TSTG -55 125 °C 6
Output voltage, Ch-1 nominal (code 12) VOUT1 1.2 V Ch-1 output voltage code 12 per numbering guide 3
Output voltage, Ch-2 nominal (code 28) VOUT2 2.8 V Ch-2 output voltage code 28 per numbering guide 3

CAD (KiCad official)

  • Symbol: VRD1228MTX
  • Footprint: Package_TO_SOT_SMD:SOT-23-6
  • 3D model: SOT-23-6 (KiCad packages3D, STEP)
  • 3D model files: vrd1228mtx-etched.step / vrd1228mtx-etched.glb carry the MPN laser-etched on the die in a toggleable Adom.LaserEtch group (Fusion-ready); vrd1228mtx.step / vrd1228mtx.glb are the bare package body.

Provenance

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

  • Datasheet: AnaSem datasheet (35 pp, sha256 7f8a0b5646548c27, 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