Overview
The LD39130SPUR, part of the LD39130S series, is a high accuracy voltage regulator produced by STMicroelectronics. This linear regulator provides a maximum current of 300 mA from an input voltage range of 1.4 V to 5.5 V, with a typical dropout voltage of 300 mV. It is designed for low power battery-operated applications, offering ultra-low dropout voltage, low quiescent current, and low noise features. The device is available in ultra-small packages, including DFN6 1.2 x 1.3 mm and Flip-chip 4 bumps 0.69 x 0.69 mm, ensuring maximum space saving. The regulator integrates internal logic circuitry for automatic green mode operation, enabling ultra-low consumption when the output current is low and fast transient response when the load current increases.
Key Specifications
| Parameter | Value | Unit |
|---|---|---|
| Input Voltage Range | 1.4 to 5.5 | V |
| Output Current (max) | 300 | mA |
| Dropout Voltage (typ.) | 300 | mV |
| Output Voltage Tolerance (typ.) | ±1.0% | |
| Quiescent Current (normal mode) | 45 | µA |
| Quiescent Current (green mode) | 1 | µA |
| Quiescent Current (off mode) | 0.1 | µA |
| Operating Temperature Range | -40 to 125 | °C |
| Package Options | DFN6 1.2x1.3 mm, Flip-chip 4 bumps 0.69x0.69 mm |
Key Features
- Ultra-low dropout voltage (300 mV typ. at 300 mA load)
- Automatic green mode for ultra-low consumption at light loads
- Very low quiescent current (1 µA in green mode, 45 µA in normal mode, and 0.1 µA in off mode)
- Output voltage tolerance: ±1.0% at 25 °C
- Logic-controlled electronic shutdown
- Internal soft-start
- Compatible with ceramic capacitor COUT = 330 nF
- Internal current foldback and thermal protections
- Wide range of output voltages available on request: from 0.8 V up to 4.0 V
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 LD39130SPUR?
The input voltage range is from 1.4 V to 5.5 V. - What is the maximum output current of the LD39130SPUR?
The maximum output current is 300 mA. - What is the typical dropout voltage of the LD39130SPUR?
The typical dropout voltage is 300 mV. - What are the package options for the LD39130SPUR?
The device is available in DFN6 1.2x1.3 mm and Flip-chip 4 bumps 0.69x0.69 mm packages. - What is the quiescent current in normal mode?
The quiescent current in normal mode is 45 µA. - What is the quiescent current in green mode?
The quiescent current in green mode is 1 µA. - Does the LD39130SPUR have thermal protection?
Yes, it has internal current foldback and thermal protections. - What is the operating temperature range of the LD39130SPUR?
The operating temperature range is from -40 °C to 125 °C. - Is the LD39130SPUR compatible with ceramic capacitors?
Yes, it is compatible with ceramic capacitor COUT = 330 nF. - What are some typical applications of the LD39130SPUR?
Typical applications include mobile phones, digital still cameras, cordless phones, and portable media players.
