LT1129IST-5 - Analog Devices Inc.

Manufacturer Part Number

LT1129IST-5

Manufacturer

Analog Devices

Introduction

The LT1129IST-5 is a low dropout (LDO) linear voltage regulator designed for power management applications, particularly where low dropout and high performance are essential.

Product Features and Performance

Output is positively configured with a fixed output of 5V

Supports voltage inputs up to 30V

Maximum current output of 700mA

Low quiescent current of 70 µA improving battery life in portable applications

Power Supply Rejection Ratio (PSRR) of 64dB at 120Hz ensuring stable output in noisy environments

Features over-temperature protection and reverse polarity protection for enhanced safety and durability

Product Advantages

High efficiency due to low dropout voltage of 0.7V at maximum output

Operational across a wide range of temperatures from -40°C to 125°C which enables use in diverse environments

Key Technical Parameters

Voltage - Input (Max): 30V

Voltage - Output (Min/Fixed): 5V

Current - Output: 700mA

Voltage Dropout (Max): 0.7V @ 700mA

Current - Quiescent (Iq): 70 µA

Power Supply Rejection Ratio (PSRR): 64dB (120Hz)

Quality and Safety Features

Over temperature protection

Reverse polarity protection

Compatibility

It fits in applications necessitating a small package footprint with TO-261-4, TO-261AA Package / SOT-223-3 Supplier Device Package.

Application Areas

Ideal for use in battery-powered devices, portable electronics, and other applications requiring efficient power management solutions

Product Lifecycle

The product status is listed as Obsolete, suggesting that it may be nearing discontinuation with potential availability of replacements or upgrades needing verification.

Several Key Reasons to Choose This Product

Stable and reliable fixed output of 5V suitable for consistent power supply needs

Extended operating temperature suitable for a wide range of environmental conditions

Enhanced power efficiency suitable for prolonging battery life in portable setups

Low dropout feature beneficial for performance despite lower input voltage

Safety features shield the device and connected components from potential damage