Overview
The STLQ015M18R, produced by STMicroelectronics, is a 150 mA ultra-low quiescent current linear voltage regulator. This device is designed to operate with an input voltage range from 1.5 V to 5.5 V and provides a maximum output current of 150 mA. The STLQ015M18R is notable for its very low quiescent current, which is typically 1.4 µA at maximum output current, significantly extending the battery life of applications requiring long standby times. The regulator features a typical dropout voltage of 112 mV and is stable with a ceramic capacitor on the output. It also includes logic-controlled electronic shutdown, short-circuit constant-current limiting, and thermal protection, making it suitable for a variety of portable and battery-powered systems.
Key Specifications
| Parameter | Min. | Typ. | Max. | Unit |
|---|---|---|---|---|
| Input Voltage (VIN) | 1.5 | - | 5.5 | V |
| Output Current (IOUT) | - | - | 150 | mA |
| Quiescent Current (IQ) | 1.0 | 1.4 | 2.4 | µA |
| Shutdown Current (IOFF) | 1 | - | 200 | nA |
| Output Voltage Tolerance | - | ±2% | - | % at 25 °C |
| Dropout Voltage (VDROP) | - | 112 | - | mV at IOUT = 150 mA |
| Temperature Range | -40 | - | 125 | °C |
| Thermal Shutdown | - | 170 | - | °C |
| Enable Input Logic Low | 0.4 | - | - | V |
| Enable Input Logic High | - | - | 0.7 | V |
Key Features
- Input voltage range from 1.5 V to 5.5 V
- 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
- 150 mA guaranteed output current
- 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 limit
- Temperature range: from -40 °C to 125 °C
- Short-circuit constant-current limiting and thermal protection
Applications
- Mobile phones
- Digital still cameras (DSC)
- Battery-powered equipment
- Portable media players
- Portable and battery-powered systems
- Electronic sensors
- Microcontroller power supply
Q & A
- What is the input voltage range of the STLQ015M18R?
The input voltage range of the STLQ015M18R is from 1.5 V to 5.5 V.
- What is the typical quiescent current of the STLQ015M18R at maximum output current?
The typical quiescent current at maximum output current is 1.4 µA.
- What is the maximum output current of the STLQ015M18R?
The maximum output current is 150 mA.
- What is the typical dropout voltage of the STLQ015M18R?
The typical dropout voltage is 112 mV at an output current of 150 mA.
- Does the STLQ015M18R have thermal protection?
Yes, the STLQ015M18R includes thermal protection with a thermal shutdown at 170 °C.
- What is the temperature range of the STLQ015M18R?
The temperature range is from -40 °C to 125 °C.
- Can the STLQ015M18R be shut down using logic control?
Yes, the STLQ015M18R features logic-controlled electronic shutdown, reducing total current consumption to 1 nA in OFF mode.
- What type of capacitor is recommended for the output of the STLQ015M18R?
The device is stable with a ceramic capacitor on the output, with a recommended capacitance of 1 µF.
- What are some typical applications of the STLQ015M18R?
Typical applications include mobile phones, digital still cameras, battery-powered equipment, portable media players, and microcontroller power supply.
- Does the STLQ015M18R have short-circuit protection?
Yes, the device includes short-circuit constant-current limiting.
