AMS1117-ADJ Voltage Regulator Low Drop Out – 1A SOT-223 5 or 10 pack

AMS1117-ADJ Voltage Regulator Low Drop Out +ADJ – 1A SOT-223 fixed low dropout voltage regulator with a dropout voltage of 1.3V at 1000mA. On-chip trimming adjusts the reference voltage to 1.5%

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AMS1117-ADJ Voltage Regulator Low Drop Out
This item: AMS1117-ADJ Voltage Regulator Low Drop Out - 1A SOT-223 5 or 10 pack
$1.95$4.75
$1.95$4.75
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AMS1117-ADJ Voltage Regulator Low Drop Out +ADJ – 1A SOT-223 is a fixed low dropout voltage regulator with a dropout voltage of 1.3V at 1000mA of load current. It offers current limiting and thermal shutdown and includes a Zener bandgap reference to assure output voltage accuracy to within ±1%.

Description:
  • Output Type: Adjustable
  • Input Voltage Max: 18V
  • Output Min/Fixed 1.25 V
  • Output Current: 1000mA
  • Voltage Dropout Max 1. 3 V @ 1A
  • Psrr / Ripple Rejection 60Db(120Hz)
  • LDO Regulator Case Style: SOT-223
  • No. of Pins: 3Pins
  • Operating Temperature Min: -20°C
  • Operating Temperature Max: 125°C

 

Low-dropout (LDO) regulators work in the same way as all linear voltage regulators. The main difference between LDO and non-LDO regulators is their schematic topology. Instead of an emitter follower topology, low-dropout regulators use an open collector or open drain topology. In this topology, the transistor may be easily driven into saturation with the voltages available to the regulator.

This allows the voltage to drop from the unregulated voltage to the regulated voltage as low as the saturation voltage across the transistor.

For the circuit given in the figure to the right, the output voltage is given as:

If a bipolar transistor is used instead of a field-effect transistor or JFET, significant additional power may be lost to control it. In contrast, non-LDO regulators take that power from the voltage drop itself.

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Technical Datasheet (185 KB) 

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Notes:

1. There may be slight size deviations due to manual measurement, different measuring methods and tools.
2. The picture may not reflect the actual colour of the item because of different photographing lights, angles and display monitors.

 

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