Overview
The L7809ABD2T-TR 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 this specific model. It is designed to provide stable and regulated output voltage, making it suitable for a wide range of applications. The L7809ABD2T-TR offers high durability and reliability, with features such as thermal overload protection, short circuit protection, and output transition SOA protection.
Key Specifications
| Parameter | Value | Unit |
|---|---|---|
| Output Voltage | 8.82 - 9.18 | V |
| Output Current | Up to 1.5 A | A |
| Input Voltage (for VO= 9V) | Up to 35 V | V |
| Thermal Resistance Junction-Case (D²PAK) | 3 | °C/W |
| Thermal Resistance Junction-Ambient (D²PAK) | 62.5 | °C/W |
| Operating Junction Temperature Range | -40 to 125 °C | °C |
| Dropout Voltage | 2 V | V |
| Output Noise Voltage | 10 µV/VO | µV/VO |
| Output Resistance | 16 mΩ | mΩ |
| Short Circuit Current | 0.2 A | A |
| Short Circuit Peak Current | 2.2 A | A |
Key Features
- High output current up to 1.5 A
- Internal current limiting, thermal shut-down, and safe area protection
- Low dropout voltage of 2 V
- High ripple rejection and low output noise
- Guaranteed in extended temperature range (-40 to 125 °C)
- 2% output voltage tolerance (A version)
- Available in D²PAK package
Applications
The L7809ABD2T-TR is versatile and can be used in a variety of applications, including:
- Local on-card regulation to eliminate distribution problems associated with single point regulation
- Power supplies for electronic devices requiring stable voltage
- Industrial control systems
- Automotive systems
- Consumer electronics
Q & A
- What is the output voltage of the L7809ABD2T-TR?
The output voltage of the L7809ABD2T-TR is between 8.82 V and 9.18 V. - What is the maximum output current of the L7809ABD2T-TR?
The maximum output current is up to 1.5 A. - What are the key protection features of the L7809ABD2T-TR?
The key protection features include internal current limiting, thermal shut-down, and safe area protection. - What is the dropout voltage of the L7809ABD2T-TR?
The dropout voltage is 2 V. - What is the operating junction temperature range of the L7809ABD2T-TR?
The operating junction temperature range is -40 to 125 °C. - What is the thermal resistance junction-case for the D²PAK package?
The thermal resistance junction-case for the D²PAK package is 3 °C/W. - Can the L7809ABD2T-TR be used in adjustable voltage configurations?
Yes, the L7809ABD2T-TR can be used with external components to obtain adjustable voltage and currents. - What is the minimum load current required for regulation?
The minimum load current required for regulation is 5 mA. - What are some common applications of the L7809ABD2T-TR?
Common applications include local on-card regulation, power supplies, industrial control systems, automotive systems, and consumer electronics. - What is the output noise voltage of the L7809ABD2T-TR?
The output noise voltage is 10 µV/VO.
