Overview
The STLQ015M21R, produced by STMicroelectronics, is an ultra-low quiescent current linear voltage regulator. This device is designed to provide 150 mA of maximum current with an input voltage range from 1.5 V to 5.5 V. It features a typical dropout voltage of 112 mV and is particularly notable for its very low quiescent current, which is 1.0 µA at no load and 1.4 µA at 150 mA load. The regulator is stable with a ceramic capacitor on the output and includes logic-controlled electronic shutdown, internal current and thermal limiting, and a wide range of output voltages from 0.8 V to 3.3 V in 100 mV steps.
Key Specifications
| Parameter | Value | Unit |
|---|---|---|
| Input Voltage Range | 1.5 to 5.5 | V |
| Output Voltage (nominal) | 2.1 | V |
| Output Current (nominal) | 150 | mA |
| Output Voltage Tolerance | ±2% | % |
| Quiescent Current (typ.) at no load | 1.0 | µA |
| Quiescent Current (typ.) at 150 mA load | 1.4 | µA |
| Shutdown Current (typ.) | 1 nA | nA |
| Dropout Voltage (typ.) | 112 | mV |
| Operating Temperature Range | -40 to 125 | °C |
| Package | SOT23-5L |
Key Features
- Very low quiescent current: 1.0 µA (typ.) at no load, 1.4 µA (typ.) at 150 mA load, and 1 nA (typ.) in OFF mode.
- Wide range of output voltages: 0.8 V to 3.3 V in 100 mV steps.
- Logic-controlled electronic shutdown.
- Compatible with ceramic capacitor (COUT = 1 µF).
- Internal current and thermal limiting.
- Short-circuit constant-current limiting and thermal protection.
- Operating temperature range from -40 °C to 125 °C.
Applications
- Portable and battery-powered systems.
- Electronic sensors.
- Microcontroller power supply.
- Mobile phones.
- Digital still cameras (DSC).
- Battery-powered equipment.
- Portable media players.
Q & A
- What is the maximum output current of the STLQ015M21R?
The maximum output current is 150 mA.
- What is the input voltage range for the STLQ015M21R?
The input voltage range is from 1.5 V to 5.5 V.
- What is the typical dropout voltage of the STLQ015M21R?
The typical dropout voltage is 112 mV.[
- What is the quiescent current at no load and at 150 mA load?
The quiescent current is 1.0 µA (typ.) at no load and 1.4 µA (typ.) at 150 mA load.[
- What is the shutdown current of the STLQ015M21R?
The shutdown current is 1 nA (typ.).[
- Is the STLQ015M21R compatible with ceramic capacitors?
Yes, it is compatible with ceramic capacitors (COUT = 1 µF).[
- What are the key protection features of the STLQ015M21R?
The device includes short-circuit constant-current limiting and thermal protection.[
- What is the operating temperature range of the STLQ015M21R?
The operating temperature range is from -40 °C to 125 °C.[
- What are some typical applications of the STLQ015M21R?
Typical applications include portable and battery-powered systems, electronic sensors, microcontroller power supply, mobile phones, digital still cameras (DSC), battery-powered equipment, and portable media players.[
- What is the package type of the STLQ015M21R?
The package type is SOT23-5L.[
