Overview
The LD39100PU12R, manufactured by STMicroelectronics, is a low-dropout linear voltage regulator designed to provide a maximum current of 1 A. This device is characterized by its ultra-low dropout voltage of 200 mV at 1 A load, very low quiescent current, and low-noise operation. It is suitable for low-power battery-powered applications due to its efficient power management features. The LD39100PU12R operates with an input voltage range from 1.5 V to 5.5 V and is stable with ceramic capacitors on both the input and output. It also includes features such as logic-controlled electronic shutdown, short-circuit constant current limiting, and thermal protection.
Key Specifications
| Parameter | Value | Unit |
|---|---|---|
| Input Voltage Range | 1.5 to 5.5 | V |
| Output Voltage (Nominal) | 1.2 | V |
| Output Current (Nominal) | 1 | A |
| Dropout Voltage (Typical at 1 A load) | 200 | mV |
| Quiescent Current (Typical at no load) | 20 | µA |
| Quiescent Current (Typical at 1 A load) | 200 | µA |
| Output Noise Voltage (Typical) | 30 | µV RMS |
| Output Voltage Tolerance (Typical at 25 °C) | ±2.0% | |
| Operating Temperature Range | -40 to 125 | °C |
| Package Type | DFN6 (3x3 mm) |
Key Features
- AEC-Q100 qualified for automotive applications
- Ultra-low dropout voltage (200 mV typical at 1 A load)
- Very low quiescent current (20 µA typical at no load, 200 µA typical at 1 A load, 1 µA maximum in off mode)
- Very low-noise operation (30 µV RMS at VOUT = 0.8 V)
- Output voltage tolerance: ±2.0% at 25 °C
- Logic-controlled electronic shutdown
- Stable with ceramic capacitors (COUT = 1 µF)
- Internal current and thermal limit
- Temperature range: -40 °C to 125 °C
Applications
- Industrial applications
- Personal electronics
- Printers
- Game consoles
- Computers
- Consumer applications
- Automotive post-regulation
Q & A
- What is the maximum output current of the LD39100PU12R?
The maximum output current is 1 A.
- What is the input voltage range for the LD39100PU12R?
The input voltage range is from 1.5 V to 5.5 V.
- What is the typical dropout voltage at 1 A load?
The typical dropout voltage at 1 A load is 200 mV.
- What is the quiescent current at no load and at 1 A load?
The quiescent current is 20 µA at no load and 200 µA at 1 A load.
- Is the LD39100PU12R stable with ceramic capacitors?
- What is the operating temperature range of the LD39100PU12R?
The operating temperature range is -40 °C to 125 °C.
- Does the LD39100PU12R have built-in protection features?
- What is the package type of the LD39100PU12R?
The package type is DFN6 (3x3 mm).
- Is the LD39100PU12R AEC-Q100 qualified?
- What are some typical applications of the LD39100PU12R?
Typical applications include industrial, personal electronics, printers, game consoles, computers, consumer applications, and automotive post-regulation.
