Overview
The LD39130SJ33R is a high accuracy voltage regulator produced by STMicroelectronics. It is part of the LD39130S series, designed to provide a maximum current of 300 mA from an input voltage ranging from 1.4 V to 5.5 V. This regulator features a typical dropout voltage of 300 mV, making it suitable for low power battery-operated applications. 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, which allows for maximum space saving. The LD39130SJ33R integrates internal logic circuitry that enables an ultra-low consumption mode (green mode) when the output current is low, and it returns to normal mode with fast transient response when the load current increases.
Key Specifications
| Parameter | Value | Unit |
|---|---|---|
| Input Voltage Range | 1.4 to 5.5 | V |
| Output Voltage (Nominal) | 3.3 | V |
| Output Voltage Tolerance | ±1.0% | % |
| Guaranteed Output Current | 300 | mA |
| Dropout Voltage (Typical) | 300 mV | mV |
| Quiescent Current (Normal Mode) | 45 µA | µA |
| Quiescent Current (Green Mode) | 1 µA | µA |
| Quiescent Current (Off Mode) | 0.1 µA | µA |
| Operating Temperature Range | -40 to 125 | °C |
| Package Type | Flip-chip 4 bumps | |
| Package Dimensions | 0.69 x 0.69 mm |
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
- Wide range of output voltages available on request: adjustable from 0.8 V to 4.0 V in 100 mV steps
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 LD39130SJ33R?
The input voltage range is from 1.4 V to 5.5 V. - What is the typical dropout voltage of the LD39130SJ33R?
The typical dropout voltage is 300 mV at a 300 mA load. - What are the quiescent current values in different modes?
The quiescent current is 45 µA in normal mode, 1 µA in green mode, and 0.1 µA in off mode. - What is the guaranteed output current of the LD39130SJ33R?
The guaranteed output current is 300 mA. - What is the operating temperature range of the LD39130SJ33R?
The operating temperature range is from -40 °C to 125 °C. - What types of packages are available for the LD39130SJ33R?
The device is available in DFN6 1.2 x 1.3 mm and Flip-chip 4 bumps 0.69 x 0.69 mm packages. - Does the LD39130SJ33R have internal protection features?
Yes, it has internal current foldback and thermal protections. - How does the green mode function in the LD39130SJ33R?
The green mode allows the regulator to be in ultra-low consumption mode when the output current required is very low, and it returns to normal mode with fast transient response when the load current increases. - What is the purpose of the logic-controlled electronic shutdown in the LD39130SJ33R?
The logic-controlled electronic shutdown puts the regulator in a mode where the total current consumption is lower than 0.1 µA. - What types of applications is the LD39130SJ33R suitable for?
The LD39130SJ33R is suitable for mobile phones, digital still cameras, cordless phones, and other battery-powered systems.
