Manufacturer Part Number
LD3985M18R
Manufacturer
stmicroelectronics
Introduction
The LD3985M18R is a low drop-out linear voltage regulator designed for power management, suitable for battery-powered devices due to its low quiescent current and dropout voltage.
Product Features and Performance
Positive output configuration
Fixed output type
Single regulator unit
Maximum input voltage of 6V
Fixed output voltage of 1.8V
Maximum output current of 150mA
Low quiescent current at 150 µA
Supply current maximum of 250 µA
Power Supply Rejection Ratio (PSRR) ranges from 60dB to 50dB between 1kHz to 10kHz
Product Advantages
High efficiency due to low dropout voltage
Robust power supply rejection over varying frequencies
Enhanced device operation stability with enable control feature
Key Technical Parameters
Input Voltage (Max): 6V
Output Voltage (Min/Fixed): 1.8V
Output Current: 150mA
Quiescent Current (Iq): 150 µA
Supply Current (Max): 250 µA
PSRR: 60dB ~ 50dB from 1kHz ~ 10kHz
Quality and Safety Features
Over Current Protection
Over Temperature Protection
Compatibility
Surface Mount mounting type
Compatible package SC-74A, SOT-753
Application Areas
Ideal for mobile devices, wearable technology, and other battery-operated applications
Product Lifecycle
Status: Active
No indication of discontinuation; consistent availability of replacements or upgrades not stated
Several Key Reasons to Choose This Product
Ideal for designs requiring minimal power consumption and space due to small form factor and low quiescent current
Provides reliable output with built-in protection features
Enhances overall device longevity and stability with robust thermal management and control features
Suitable for high-performance applications requiring up to 6V input with a stable 1.8V output