LT1129CS8

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LT1129CS8

+Nomenclature

LDO Voltage Regulators LT1129 - Micropower Low Dropout Regulators with Shutdown

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  • Pièce fabricant #LT1129CS8

  • Fiche technique LT1129CS8 DataSheet

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Présentation

Description

The LT1129CS8 is a low-dropout (LDO) linear voltage regulator manufactured by Analog Devices, under the Linear Technology brand. This component is designed to provide a stable output voltage with a low input-to-output differential, making it ideal for applications where efficiency and low heat generation are crucial. It typically features a dropout voltage of around 0.4V at full load, which allows it to operate efficiently even with low input voltages.
The LT1129CS8 can deliver a maximum output current of up to 700mA, which is suitable for powering various electronic circuits and devices. It also includes features such as current limiting and thermal shutdown to protect against overcurrent conditions and excessive temperature, enhancing its reliability.
Packaged in an 8-lead SOIC (Small Outline Integrated Circuit), the LT1129CS8 is compact, making it suitable for space-constrained applications. Additionally, it supports a wide input voltage range and offers low quiescent current, helping minimize power loss in standby operations. These characteristics make the LT1129CS8 a versatile choice for regulators in battery-powered and portable devices.

Equivalent

The LT1129CS8 is a low-dropout (LDO) linear voltage regulator. Equivalent products to consider include:
1. LM317 - A popular adjustable voltage regulator.
2. MIC5205 - Another low-dropout regulator with similar features.
3. TPS7A47 - Offers low dropout with high current capability.
4. ADP3331 - A precision LDO voltage regulator.
5. NCP1117 - A low dropout regulator with fixed and adjustable options.
Ensure compatibility by checking the specifications like output current, dropout voltage, and package type.

Features

The LT1129CS8 is a low-dropout (LDO) voltage regulator designed by Analog Devices, previously Linear Technology. It features a few key specifications:
1. Output Current: Capable of supplying up to 700mA of output current.

2. Low Dropout Voltage: Typically around 0.4V at full load, making it efficient for applications where the input voltage is close to the output voltage.
3. Quiescent Current: The regulator has a low quiescent current of about 50µA, which is beneficial for battery-powered applications to extend battery life.
4. Accuracy: The LT1129CS8 offers excellent output voltage accuracy, typically within ±1%.
5. Protection Features: It includes various protection mechanisms such as thermal shutdown and current limiting to prevent damage under fault conditions.
6. Stability: The device is stable with low-value capacitors, allowing the use of small and inexpensive capacitors in the design.
7. Package: It comes in an 8-pin SOIC package, making it suitable for compact designs.
Overall, the LT1129CS8 is designed for applications requiring efficient and reliable voltage regulation with minimal power loss.

Pinout

The LT1129CS8 is a low dropout (LDO) linear voltage regulator produced by Linear Technology (now part of Analog Devices). It comes in an 8-pin SOIC (Small Outline Integrated Circuit) package.
Here are the pin functions for the LT1129CS8:
1. Pin 1 (VIN): Input Voltage - This is where the input voltage is supplied to the regulator.
2. Pin 2 (GND): Ground - This pin is connected to the ground of the circuit.
3. Pin 3 (SHDN): Shutdown - This is a shutdown pin. When pulled low, the regulator is in shutdown mode, which disables the output.
4. Pin 4 (ADJ): Adjust - For the adjustable version, this pin is used to set the output voltage with an external resistor network.
5. Pin 5 (NC): No Connection - This pin is typically not connected.
6. Pin 6 (NC): No Connection - This pin is typically not connected.
7. Pin 7 (VOUT): Output Voltage - This is the regulated output voltage from the LDO.
8. Pin 8 (NC): No Connection - This pin is typically not connected.
The LT1129 is designed for low quiescent current and is suitable for use in battery-powered applications.

Manufacturer

The LT1129CS8 is manufactured by Linear Technology Corporation. Linear Technology was a semiconductor company that specialized in designing, manufacturing, and marketing a broad line of high-performance analog integrated circuits. The company's portfolio included power management, data conversion, signal conditioning, RF and interface, and µModule subsystems. In 2017, Linear Technology was acquired by Analog Devices, Inc., a well-known multinational company that designs and manufactures semiconductor products and solutions used in a wide array of electronic equipment. Analog Devices is recognized for its extensive range of analog, mixed-signal, and digital signal processing (DSP) integrated circuits used in virtually all types of electronic equipment.

Application

The LT1129CS8 is a low-dropout voltage regulator commonly used in applications requiring efficient power management. It's ideal for battery-powered devices due to its low quiescent current and dropout voltage. Typical application areas include personal communication devices, portable instruments, and battery-operated equipment. Additionally, it is used in systems that require stable output voltage despite input voltage variations, such as microcontroller and DSP power supplies. Its compact size makes it suitable for space-constrained applications, and its thermal protection feature ensures reliability in temperature-sensitive environments.

Package

The LT1129CS8 is a low-dropout (LDO) linear regulator from Linear Technology, housed in an SO-8 package, which is a standard small-outline package with 8 pins.