Overview
The LD39100PU33RY is a low dropout voltage regulator (LDO) produced by STMicroelectronics. This device is designed to provide a maximum current of 1 A with an input voltage range from 1.5 V to 5.5 V. It features an ultra-low dropout voltage of 200 mV at 1 A load, making it suitable for low power battery-powered applications. The LD39100PU33RY is AEC-Q100 qualified, ensuring its reliability in automotive and other demanding environments. It 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 | Unit |
|---|---|---|
| Input Voltage Range | 1.5 to 5.5 | V |
| Output Voltage (Nominal) | 3.3 | 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 | µVRMS at VOUT = 0.8 V |
| Output Voltage Tolerance (Typical at 25 °C) | ±2.0% | |
| Operating Temperature Range | -40 to 125 | °C |
| Package | DFN6 (3x3 mm) with wettable flank |
Key Features
- AEC-Q100 qualified for automotive applications
- Ultra-low dropout voltage of 200 mV at 1 A load
- Very low quiescent current: 20 µA typical at no load, 200 µA typical at 1 A load, and less than 1 µA in shutdown mode
- Very low noise: 30 µVRMS at VOUT = 0.8 V without a bypass capacitor
- Output voltage tolerance: ±2.0% at 25 °C
- Guaranteed output current of 1 A
- Wide range of output voltages available: 0.8 V to 4.5 V with 100 mV step and adjustable from 0.8 V
- Logic-controlled electronic shutdown
- Stable with ceramic capacitors (COUT = 1 µF)
- Internal current and thermal limiting
Applications
- Automotive post-regulation
- Printers
- Game consoles
- Computers
- Consumer applications
- Low power battery-powered devices
Q & A
- What is the maximum output current of the LD39100PU33RY?
The maximum output current is 1 A.
- What is the input voltage range for the LD39100PU33RY?
The input voltage range is from 1.5 V to 5.5 V.
- What is the typical dropout voltage of the LD39100PU33RY at 1 A load?
The typical dropout voltage is 200 mV at 1 A load.
- What is the quiescent current of the LD39100PU33RY at no load and at 1 A load?
The quiescent current is 20 µA typical at no load and 200 µA typical at 1 A load.
- Is the LD39100PU33RY AEC-Q100 qualified?
- What is the output noise voltage of the LD39100PU33RY?
The output noise voltage is 30 µVRMS at VOUT = 0.8 V.
- What is the operating temperature range of the LD39100PU33RY?
The operating temperature range is -40 °C to 125 °C.
- What package type is the LD39100PU33RY available in?
The LD39100PU33RY is available in a DFN6 (3x3 mm) package with a wettable flank.
- Does the LD39100PU33RY have built-in thermal protection?
- Can the LD39100PU33RY be shut down electronically?
