Overview
The LM1117 is a family of low dropout voltage regulators. The voltage difference is 1.2V output and 1.2V when the load current is 800mA. It has the same pinout as National Semiconductor's industry standard device LM317. The LM1117 is available in an adjustable voltage version with an output voltage range of 1.25 to 13.8V through two external resistors. There are also five models with fixed voltage outputs (1.8V, 2.5V, 2.85V, 3.3V and 5V). The LM1117 provides current limiting and thermal protection. The circuit contains a Zener-adjusted bandgap reference voltage to ensure an output voltage accuracy of ±1%. The LM1117 series is available in LLP, TO-263, SOT-223, TO-220 and TO-252 D-PAK packages. A tantalum capacitor of at least 10uF is required at the output to improve transient response and stability.
Replacement model
X1117 is an independent brand of IC network supermarket, which can replace LM1117 very well.
The X1117 is a low voltage drop three-terminal linear regulator with a positive voltage output with a 1.2V drop at 1A output current. Divided into two versions, fixed voltage output version and adjustable voltage output version. The fixed output voltages of 1.5V, 1.8V, 2.5V, 3.3V, 5.0V and adjustable versions have a voltage accuracy of 1%; for fixed voltages of 1.2V, the output voltage accuracy is 2%. Internal integrated thermal protection and current limiting circuit for all types of electronic products. The A1117 is a high efficiency low dropout three-terminal linear regulator developed by Taiwan Everlight. The A1117 provides current limiting and thermal protection to ensure chip and power stability systems. The output voltage accuracy is guaranteed to be ±2% on the chip. A fixed voltage output version and an adjustable voltage output version are also available, and the adjustable version can output from 1.25V to 13.8V.
characteristic
- Models available in 1.8V, 2.5V, 2.85V, 3.3V, 5V and adjustable voltage
- Space-saving SOT-223 and LLP packages
- Current limit and thermal protection
- Output current up to 800mA
- Linear adjustment rate: 0.2% (Max)
- Load adjustment rate: 0.4% (Max)
- temperature range
- -LM1117: 0°C~125°C
- -LM1117I: -40°C~125°C
application
- 2.85V module can be used for SCSI-2 active terminals
- Main regulator for switching DC/DC converters
- High efficiency linear regulator
- battery charger
- Battery powered device
Lm1117 typical application circuit
Lm1117 data sheet and related information download:
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