Overview
The LD39100PU12RY is a low-dropout voltage regulator designed by STMicroelectronics. This device is characterized by its ultra-low dropout voltage, low quiescent current, and low-noise performance, making it highly suitable for low-power battery-powered applications. It provides a maximum current of 1 A with an input voltage range from 1.5 V to 5.5 V and a typical dropout voltage of 200 mV. The regulator is stable with ceramic capacitors on both the input and output and includes features such as logic-controlled electronic shutdown, short-circuit constant current limiting, and thermal protection.
Key Specifications
| Parameter | Value |
|---|---|
| Input Voltage Range | 1.5 V to 5.5 V |
| Typical Dropout Voltage | 200 mV at 1 A load |
| Quiescent Current | 20 µA (typ. at no load), 200 µA (typ. at 1 A load), 1 µA (max. in off mode) |
| Output Current | 1 A (guaranteed) |
| Output Voltage Tolerance | ±2.0% at 25 °C |
| Operating Temperature Range | -40 °C to 125 °C |
| Package Type | DFN6 (3x3 mm) with wettable flank |
| AEC-Q100 Qualified | Yes |
| RoHS Compliance | Yes, Ecopack2 |
Key Features
- AEC-Q100 qualified for reliable performance in harsh environments.
- Ultra-low dropout voltage (200 mV typ. at 1 A load).
- Very low quiescent current (20 µA typ. at no load, 1 µA max. in off mode).
- Low-noise output without bypass capacitor.
- Logic-controlled electronic shutdown.
- Stable with ceramic capacitors.
- Internal current and thermal limit.
- Wide range of output voltages available on request (0.8 V to 4.5 V with 100 mV step and adjustable from 0.8 V).
Applications
The LD39100PU12RY is commonly used in various applications, including:
- Portable electronics and battery-powered devices.
- Automotive systems requiring robust performance.
- Industrial control applications.
Q & A
- What is the maximum output current of the LD39100PU12RY?
The LD39100PU12RY provides a maximum output current of 1 A. - What is the input voltage range of the LD39100PU12RY?
The input voltage range is from 1.5 V to 5.5 V. - What is the typical dropout voltage of the LD39100PU12RY?
The typical dropout voltage is 200 mV at a 1 A load. - Is the LD39100PU12RY AEC-Q100 qualified?
Yes, the LD39100PU12RY is AEC-Q100 qualified. - What is the quiescent current of the LD39100PU12RY?
The quiescent current is 20 µA (typ. at no load) and 200 µA (typ. at 1 A load), with a maximum of 1 µA in off mode. - What are the operating temperature limits of the LD39100PU12RY?
The operating temperature range is from -40 °C to 125 °C. - What package type does the LD39100PU12RY come in?
The LD39100PU12RY comes in a DFN6 (3x3 mm) package with a wettable flank. - Is the LD39100PU12RY RoHS compliant?
Yes, the LD39100PU12RY is RoHS compliant (Ecopack2). - What are some common applications of the LD39100PU12RY?
Common applications include portable electronics, battery-powered devices, automotive systems, and industrial control applications. - Does the LD39100PU12RY have built-in protection features?
Yes, it includes short-circuit constant current limiting and thermal protection.
