ELM1117HHBipolar 1A LDO Voltage regulator

ELM1117HH is bipolar LDO three terminal voltage regulator. This series includes thermal shutdown protection and short circuit current limiter. ELM1117 series is available in fixed version (ELM1117HH-xx Vout:1.2V, 1.8V, 2.5V, 3.3V) and adjustable version (ELM1117HH Vout:1.25V to 14.6V).

Output voltage fixed:

Output voltage adj.:
1.2V, 1.8V
2.5V, 3.3V
1.25V to 14.6V
Output current1A
Low dropoutTyp.1.2V
(at 1A Output current)
Line regulationTyp.0.04%
Load regulationTyp.0.4%
Thermal limit burn-in100%
Thermal shutdown protection150°C
High efficiency linear regulators
Post regulators for switching supplies
Adjustable power supply

Absolute Maximum Ratings

Input voltageVin+20V
Power dissipation
Pd500 (*1)
1600 (*2)
Operating junction temperatureTop-40 to +125°C
Storage temperatureTstg-65 to +150°C
Thermal resistance junction to ambientRθja63°C/W
Lead temperature(soldering 10s.)Tlead300°C
Minimum ESD rating (HBM)Vesd3kV
  • * 1. No mounted, IC alone.
    * 2. When mounted on glass epoxy 2-layers PCB (EIJ/JEDEC standard size: 76.2 mm×114.3 mm×1.6 mm), Cu thickness 35 μm, copper foil area ratio 20% on the front side, back side 100% .

Block diagram