Overview
The L7808CV-DG is a three-terminal positive voltage regulator from STMicroelectronics, part of the L78 series. This regulator is available in various packages, including the D²PAK package for the L7808CV-DG model. It is designed to provide stable and regulated output voltage, making it suitable for a wide range of applications. The L7808CV-DG offers several key features such as thermal overload protection, short circuit protection, and output transition SOA protection, ensuring robust and reliable operation.
Key Specifications
| Parameter | Min. | Typ. | Max. | Unit |
|---|---|---|---|---|
| Output Voltage (VO) | 7.84 | 8 | 8.16 | V |
| Output Current (IO) | - | - | 1.5 A | A |
| Input Voltage (VI) | - | - | 35 V (for VO = 5 to 18 V), 40 V (for VO = 20, 24 V) | V |
| Thermal Resistance Junction-Case (RthJC) | - | - | 3 °C/W (D²PAK) | °C/W |
| Thermal Resistance Junction-Ambient (RthJA) | - | - | 62.5 °C/W (D²PAK) | °C/W |
| Dropout Voltage (Vd) | - | - | 2 V | V |
| Output Noise Voltage (eN) | - | 10 | - | µV/VO |
| Output Resistance (RO) | - | 17 | - | mΩ |
| Short Circuit Current (Isc) | - | - | 0.2 A | A |
| Short Circuit Peak Current (Iscp) | - | - | 2.2 A | A |
| Output Voltage Drift (∆VO/∆T) | -1.1 | - | - | mV/°C |
Key Features
- Fixed Output Voltage: The L7808CV-DG provides a fixed output voltage of 8 V.
- High Current Capability: It can deliver up to 1.5 A of output current.
- Thermal Overload Protection: Built-in thermal shutdown protects the device from overheating.
- Short Circuit Protection: Internal current limiting and short circuit protection ensure device safety.
- Output Transition SOA Protection: Safe area protection for output transitions.
- Low Dropout Voltage: A dropout voltage of 2 V at 1 A output current.
- Low Output Noise: Output noise voltage of 10 µV/VO.
- High Ripple Rejection: Effective ripple rejection ratio.
- Wide Operating Temperature Range: Operating junction temperature range from 0 to 125 °C.
Applications
- Local On-Card Regulation: Ideal for providing local regulation on PCBs, eliminating distribution problems associated with single point regulation.
- Power Supplies: Used in various power supply designs requiring stable and regulated output voltages.
- Industrial Control Systems: Suitable for industrial control systems where reliable voltage regulation is crucial.
- Consumer Electronics: Found in consumer electronics such as audio equipment, medical devices, and other applications requiring stable DC power.
- Automotive Systems: Can be used in automotive systems where robust and reliable voltage regulation is necessary.
Q & A
- What is the output voltage of the L7808CV-DG?
The output voltage of the L7808CV-DG is 8 V.
- What is the maximum output current of the L7808CV-DG?
The maximum output current is up to 1.5 A.
- What are the package options for the L78 series?
The L78 series is available in TO-220, TO-220FP, D²PAK, and DPAK packages.
- Does the L7808CV-DG have thermal overload protection?
Yes, it has built-in thermal overload protection.
- What is the dropout voltage of the L7808CV-DG?
The dropout voltage is 2 V at 1 A output current.
- What is the operating junction temperature range for the L7808CV-DG?
The operating junction temperature range is from 0 to 125 °C.
- Does the L7808CV-DG have short circuit protection?
Yes, it has internal current limiting and short circuit protection.
- What is the minimum load current required for regulation?
The minimum load current required for regulation is 5 mA.
- Can the L7808CV-DG be used for adjustable voltage regulation?
Yes, it can be used with external components to obtain adjustable voltage and currents.
- What is the thermal resistance junction-case for the D²PAK package?
The thermal resistance junction-case for the D²PAK package is 3 °C/W.
