Manufacturer Part Number
LM2990S-5.0
Manufacturer
texas-instruments
Introduction
The LM2990S-5.0 is a negative output, fixed voltage, low dropout (LDO) linear regulator. It's specifically designed for operation in rugged applications with advanced protection features. Packaging in a tube ensures optimal protection during transportation and storage.
Product Features and Performance
Negative output configuration
Fixed output voltage of -5V
Can handle input voltages up to -26V
Maintains a low dropout voltage of 1V at 1A load
Output current capability of up to 1.8A
Power Supply Rejection Ratio of 58dB at 1kHz
Product Advantages
High reliability under various temperature ranges (-40°C to 125°C)
Advanced thermal and short circuit protection features
Efficient performance with a minimal quiescent current of 1 mA
Key Technical Parameters
Input Voltage (Max): -26V
Output Voltage (Min/Fixed): -5V
Dropout Voltage (Max): 1V @ 1A
Output Current: 1.8A
Quiescent Current: 1 mA
Supply Current (Max): 5 mA
PSRR: 58dB (1kHz)
Quality and Safety Features
Over Temperature Protection
Short Circuit Protection
Compatibility
Surface mount technology
Fits in TO-263-4, D2PAK (3 Leads + Tab), TO-263AA packages
Application Areas
Suitable for automotive, telecommunications, and industrial applications where ruggedized power regulation is needed.
Product Lifecycle
Status: Last Time Buy
Indicates approaching discontinuation with a need to consider replacements or upgrades.
Several Key Reasons to Choose This Product
Robust output voltage of -5V suitable for negative voltage applications
High current output capacity of 1.8A ideal for higher load demands
Low dropout voltage to ensure efficient operation at close-to-maximum input levels
Superior protection mechanisms safeguarding against thermal overload and circuit shorts
High PSRR offering stable performance against supply noise
Includes the option of surface mounting, which suits modern PCB designs
