Manufacturer Part Number
LT1129MPST-3.3
Manufacturer
Analog Devices
Introduction
The LT1129MPST-3.3 is a low dropout (LDO) linear regulator designed for power management applications, providing a fixed output of 3.3V.
Product Features and Performance
Positive output configuration
Fixed output type
Supports one regulator
Max input voltage of 30V
Fixed output voltage of 3.3V
Maximum voltage dropout of 0.7V at 700mA load
Output current capability of 700mA
Quiescent current of 70 µA
Maximum supply current of 90 mA
Power supply rejection ratio (PSRR) of 64dB at 120Hz
Enabled control features
Product Advantages
Low dropout voltage facilitates better efficiency
Compact surface mount package (SOT-223-3) for space-saving
Over-temperature and reverse polarity protection enhance reliability and safety
Key Technical Parameters
Input voltage (max): 30V
Output voltage (min/fixed): 3.3V
Voltage dropout (max): 0.7V @ 700mA
Output current: 700mA
Quiescent current (Iq): 70 µA
Supply current (max): 90 mA
PSRR: 64dB (120Hz)
Quality and Safety Features
Designed with over-temperature protection
Reverse polarity protection
Compatibility
Compatible with various applications requiring a stable 3.3V supply
Mountable on surface type settings due to SOT-223-3 package
Application Areas
Suitable for use in electronic power management where low voltage dropout is crucial
Product Lifecycle
Obsolete status
Lack of direct replacements or upgrades specified
Several Key Reasons to Choose This Product
Optimal choice for systems with up to 30V input requiring a stable 3.3V output
Low dropout feature enhances system efficiency
Built-in safety features for reliable operation under adverse conditions
Effective in applications where space and power efficiency are critical due to its small form factor and low quiescent current