Overview
The LDLN015PU18R is a high-performance linear voltage regulator IC produced by STMicroelectronics. This device is designed to provide an ultra-low noise output, making it suitable for applications requiring high precision and stability. The LDLN015PU18R offers a guaranteed output current of 150 mA and operates from an input voltage range of 2.1 V to 5.5 V. It features a fixed output voltage of 1.8 V and is packaged in a DFN6 (2 x 2 mm) package, which is compact and suitable for space-constrained designs.
Key Specifications
| Parameter | Value | Unit |
|---|---|---|
| Input Voltage Range | 2.1 to 5.5 | V |
| Output Voltage | 1.8 | V |
| Output Current | 150 | mA |
| Output Voltage Tolerance | ±1% | - |
| Dropout Voltage | 86 to 180 | mV |
| Quiescent Current (No Load) | 35 | µA |
| Quiescent Current (150 mA Load) | 70 | µA |
| Output Noise Voltage (10 Hz to 100 kHz) | 6.3 | µVRMS |
| Supply Voltage Rejection (1 kHz) | 92 | dB |
| Operating Temperature Range | -40 to 125 | °C |
| Package Type | DFN6 (2 x 2 mm) | - |
Key Features
- Ultra Low Noise: 6.3 µVRMS from 10 Hz to 100 kHz, making it suitable for ultra-sensitive loads.
- High PSRR: Power supply rejection ratio higher than 90 dB at low frequencies.
- Low Quiescent Current: 35 µA typical at no load and 70 µA typical at 150 mA load.
- Logic-Controlled Electronic Shutdown: Enables the device to enter a low-power shutdown mode with current consumption below 1 µA.
- Internal Current and Thermal Limiting: Provides protection against short-circuit and thermal overload.
- Stable with Ceramic Capacitors: No bypass capacitor is required.
- Compact Package: DFN6 (2 x 2 mm) package for space-constrained designs.
Applications
- Noise-Sensitive Loads: Suitable for applications like ADCs, VCOs in mobile phones, and personal digital assistants (PDAs).
- Low Power Battery-Powered Devices: Ideal for battery-powered applications requiring low noise and high stability.
- Automotive and Industrial Applications: Designed for use in automotive and industrial environments where high accuracy and reliability are crucial.
Q & A
- What is the maximum output current of the LDLN015PU18R?
The maximum output current is 150 mA.
- What is the input voltage range for the LDLN015PU18R?
The input voltage range is from 2.1 V to 5.5 V.
- What is the output voltage of the LDLN015PU18R?
The output voltage is fixed at 1.8 V.
- What is the typical quiescent current of the LDLN015PU18R at no load?
The typical quiescent current at no load is 35 µA.
- Does the LDLN015PU18R require a bypass capacitor?
No, the LDLN015PU18R does not require a bypass capacitor.
- What is the operating temperature range of the LDLN015PU18R?
The operating temperature range is from -40 °C to 125 °C.
- What is the package type of the LDLN015PU18R?
The package type is DFN6 (2 x 2 mm).
- What is the typical output noise voltage of the LDLN015PU18R?
The typical output noise voltage is 6.3 µVRMS from 10 Hz to 100 kHz.
- Does the LDLN015PU18R have built-in thermal protection?
- How does the enable logic control function work on the LDLN015PU18R?
The enable logic control function allows the device to be turned on or off by setting the enable input voltage above 0.9 V or below 0.4 V, respectively.
