Overview
The LD39130SJ18R is a high accuracy voltage regulator produced by STMicroelectronics. It is part of the LD39130S series, which provides a maximum current of 300 mA from an input voltage ranging from 1.4 V to 5.5 V. This regulator is characterized by its ultra-low dropout voltage of 300 mV (typical at 300 mA load) and very low quiescent current, making it suitable for low power battery-operated applications. The device is available in an ultra-small Flip-chip 4 bumps package, allowing for maximum space saving.
Key Specifications
| Parameter | Value | Unit |
|---|---|---|
| Input Voltage | 1.4 to 5.5 | V |
| Output Voltage (nominal) | 1.8 | V |
| Output Voltage Tolerance (typical) | ±1.0% | % |
| Output Current (nominal) | 300 | mA |
| Dropout Voltage (typical at 300 mA load) | 300 | mV |
| Quiescent Current | 1 µA (green mode), 45 µA (normal mode), 0.1 µA (off mode) | µA |
| Operating Temperature Range | -40 to 125 | °C |
| Package | Flip-chip 4 bumps | - |
| Thermal Shutdown | 160 °C with 20 °C hysteresis | °C |
Key Features
- Ultra-low dropout voltage (300 mV typical at 300 mA load)
- Automatic green mode for ultra-low consumption when output current is low
- Very low quiescent current (1 µA in green mode, 45 µA in normal mode, and 0.1 µA in off mode)
- Logic-controlled electronic shutdown
- Internal soft-start
- Compatible with ceramic capacitor COUT = 330 nF
- Internal current foldback and thermal protections
- Available in ultra-small Flip-chip 4 bumps package
Applications
- Mobile phones
- Digital still cameras (DSC)
- Cordless phones and similar battery-powered systems
- Portable media players
Q & A
- What is the input voltage range of the LD39130SJ18R?
The input voltage range is from 1.4 V to 5.5 V.
- What is the typical dropout voltage of the LD39130SJ18R?
The typical dropout voltage is 300 mV at a 300 mA load.
- What are the quiescent current values for the LD39130SJ18R in different modes?
The quiescent current is 1 µA in green mode, 45 µA in normal mode, and 0.1 µA in off mode.
- What is the output voltage tolerance of the LD39130SJ18R?
The output voltage tolerance is ±1.0% at 25 °C.
- What is the maximum guaranteed output current of the LD39130SJ18R?
The maximum guaranteed output current is 300 mA.
- What are the package options for the LD39130SJ18R?
The device is available in an ultra-small Flip-chip 4 bumps package.
- What is the operating temperature range of the LD39130SJ18R?
The operating temperature range is from -40 °C to 125 °C.
- Does the LD39130SJ18R have built-in thermal protection?
- How does the green mode function in the LD39130SJ18R?
The green mode allows the regulator to be in ultra-low consumption mode when the output current required is very low.
- What type of capacitor is recommended for the output of the LD39130SJ18R?
A ceramic capacitor with a capacitance of 330 nF is recommended.
