LM1117DTX-2.85/NOPB

Current - Output:	800mA
Base Part Number:	LM1117
Supplier Device Package:	TO-252-3
Package / Case:	TO-252-3, DPak (2 Leads + Tab), SC-63
Mounting Type:	Surface Mount
Operating Temperature:	0°C ~ 125°C
Protection Features:	Over Current, Over Temperature
Control Features:	--
PSRR:	75dB (120Hz)
Current - Supply (Max):	10mA
Current - Quiescent (Iq):	5mA
Series:	--
Voltage Dropout (Max):	1.2V @ 800mA
Voltage - Output (Max):	--
Voltage - Output (Min/Fixed):	2.85V
Voltage - Input (Max):	15V
Number of Regulators:	1
Output Type:	Fixed
Output Configuration:	Positive
Part Status:	Obsolete
Packaging:	Tape & Reel (TR)

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Introduction of the LM1117DTX-2.85/NOPB

The LM1117DTX-2.85/NOPB is a low-dropout (LDO) three-terminal regulator IC that is designed to provide a high output current with a fixed output voltage of 2.85 V ±2%. It is part of the LM1117 series of voltage regulators that is manufactured by Texas Instruments, available in a wide range of package types. This device is suitable for both parallel and serial connection.

Application Fields and Working Principle

The LM1117DTX-2.85/NOPB is widely used in applications where supplying a low voltage output is necessary. It can be used in a variety of devices, such as PCs, notebooks, phones and tablets. Unlike other voltage regulators, the LM1117DTX-2.85/NOPB can provide a relatively low output voltage without requiring a high input voltage. The voltage regulator works on a basic principle of ensuring that a constant voltage output is maintained despite changes in the input voltage and current. The LM1117DTX-2.85/NOPB uses an advanced voltage-mode control circuit to automatically maintain the output voltage at a nominal level. It features on-chip protection circuits that protect it from damage due to the input voltage exceeding its rated maximum value, excessive load current, or short-circuiting of the output. The LM1117DTX-2.85/NOPB also includes an on-chip reference voltage of 2.85 V with an initial accuracy of ±2%, and can source a load current up to 150mA. It also features an adjustable current limit and over-temperature protection circuitry. The LM1117DTX-2.85/NOPB is suited for use in numerous application fields, such as multi-function printers, scanners, and other electronic equipment. It can also be used in mobile phones, digital cameras, and personal digital assistants.

Features

The LM1117DTX-2.85/NOPB has several features that make it an attractive choice for applications requiring a low voltage regulator. These include:

• Fixed 2.85V output voltage with a ±2% accuracy.
• Low standby current of 1μA typical.
• Open-loop gain of 140V/V.
• Low dropout voltage of 1.2V typical.
• High load current of 150mA.
• On-chip protection circuits.
• Adjustable current limit.
• Over-temperature protection.
• Compact packaging options.

Conclusion

The LM1117DTX-2.85/NOPB is a low-dropout three-terminal regulator IC ideal for applications where a low voltage output is necessary. It offers an excellent combination of features such as an on-chip reference voltage of 2.85V with an accuracy of 2%, a high load current of 150mA, and on-chip protection circuits. It is especially suitable for use in multi-function printers, scanners, and other electronic equipment.

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