Overview
The LD39015M18R is a low quiescent current, low noise voltage regulator produced by STMicroelectronics. This component is part of the LD39015 series and is designed for low power battery-powered applications. It features an ultra-low dropout voltage, very low quiescent current, and minimal noise, making it ideal for use in mobile phones, personal digital assistants (PDAs), and cordless phones. The regulator is available in a surface mount SOT-23-5 package and offers a range of beneficial features for power management in compact devices.
Key Specifications
| Attribute | Value |
|---|---|
| Input Voltage (Min) | 1.5 V |
| Input Voltage (Max) | 5.5 V |
| Output Voltage Fixed | 1.8 V |
| Dropout Voltage (Max) | 100 mV |
| Output Current (Max) | 150 mA |
| Tolerance (%) | ±2% |
| Operating Temp Range | -40 °C to 125 °C |
| Regulator Topology | Fixed |
| Quiescent Current | 70 µA |
| No. of Outputs | Single |
| Output Noise | 29 µV |
| Load Regulation (%) | 0.002% |
| Line Regulation (%) | 0.01% |
| Package Style | SOT-23A-5 |
| Mounting Method | Surface Mount |
Key Features
- Input voltage from 1.5 to 5.5 V
- Ultra low-dropout voltage (80 mV typ. at 100 mA load)
- Very low quiescent current (18 µA typ. at no load, 38 µA typ. at 150 mA load, 1 µA max. in OFF mode)
- Very low noise without bypass capacitor (29 µV RMS at VOUT = 0.8 V)
- Output voltage tolerance: ± 2.0% @ 25 °C
- 150 mA guaranteed output current
- Wide range of output voltages available on request: 0.8 V to 3.3 V with 100 mV step
- Logic-controlled electronic shutdown
- Compatible with ceramic capacitors CO = 1 µF
- Internal current and thermal limit
- Temperature range: -40 °C to 125 °C
Applications
- Mobile Phones
- Personal Digital Assistants (PDAs)
- Cordless phones or similar battery-powered systems
Q & A
- What is the output voltage of the LD39015M18R? The output voltage of the LD39015M18R is 1.8 V.
- What is the maximum output current of the LD39015M18R? The maximum output current is 150 mA.
- What is the input voltage range for the LD39015M18R? The input voltage range is from 1.5 V to 5.5 V.
- What is the typical dropout voltage of the LD39015M18R? The typical dropout voltage is 80 mV at 100 mA load.
- What is the quiescent current of the LD39015M18R? The quiescent current is 70 µA, with 18 µA typical at no load and 38 µA typical at 150 mA load.
- Does the LD39015M18R have a shutdown feature? Yes, it has a logic-controlled electronic shutdown feature.[
- What type of capacitors is the LD39015M18R compatible with? It is compatible with ceramic capacitors CO = 1 µF.[
- What is the operating temperature range of the LD39015M18R? The operating temperature range is -40 °C to 125 °C.[
- In what package is the LD39015M18R available? It is available in a surface mount SOT-23-5 package.[
- What are some typical applications for the LD39015M18R? Typical applications include mobile phones, PDAs, and cordless phones or similar battery-powered systems.[
