Overview
The L7805ACP is a three-terminal positive voltage regulator from STMicroelectronics, part of the L78 series. This regulator is available in the TO-220FP package and is designed to provide a fixed output voltage of 5V. It is widely used in various applications requiring local on-card regulation, thereby eliminating the issues associated with single-point regulation. The L7805ACP is known for its robustness, featuring internal current limiting, thermal shut-down, and safe area protection, making it essentially indestructible if adequate heat sinking is provided.
Key Specifications
| Parameter | Value | Unit |
|---|---|---|
| Output Voltage | 4.9 - 5.1 | V |
| Output Current | Up to 1.5 A | A |
| Input Voltage | Up to 35 V (for VO = 5 to 18 V), 40 V (for VO = 20, 24 V) | V |
| Dropout Voltage | 2 V | V |
| Output Noise Voltage | 10 µV/VO | µV/VO |
| Output Resistance | 17 mΩ | mΩ |
| Short Circuit Current | 0.2 A | A |
| Short Circuit Peak Current | 2.2 A | A |
| Thermal Resistance Junction-Case | 5 °C/W (TO-220FP) | °C/W |
| Thermal Resistance Junction-Ambient | 60 °C/W (TO-220FP) | °C/W |
| Operating Junction Temperature Range | 0 to 125 °C (L7805AC), -40 to 125 °C (L7805AB) | °C |
Key Features
- Fixed output voltage of 5V with a tolerance of ±2% (A version)
- Output current up to 1.5 A
- Internal current limiting and thermal shut-down
- Short circuit protection and output transition SOA protection
- Low dropout voltage of 2V
- Low output noise voltage of 10 µV/VO
- High ripple rejection ratio
- Adequate heat sinking allows for high current delivery
- Available in TO-220FP package
Applications
The L7805ACP is versatile and can be used in a wide range of applications, including:
- Local on-card regulation in electronic devices
- Power supplies for various electronic equipment
- Industrial control systems
- Consumer electronics
- Automotive systems
- Adjustable voltage and current applications with external components
Q & A
- What is the output voltage of the L7805ACP?
The output voltage of the L7805ACP is 5V with a tolerance of ±2% (A version).
- What is the maximum output current of the L7805ACP?
The maximum output current of the L7805ACP is up to 1.5 A.
- What are the key protection features of the L7805ACP?
The L7805ACP features internal current limiting, thermal shut-down, short circuit protection, and output transition SOA protection.
- What is the dropout voltage of the L7805ACP?
The dropout voltage of the L7805ACP is 2V.
- What is the thermal resistance junction-ambient of the L7805ACP in TO-220FP package?
The thermal resistance junction-ambient of the L7805ACP in TO-220FP package is 60 °C/W.
- What is the operating junction temperature range for the L7805ACP?
The operating junction temperature range for the L7805ACP is 0 to 125 °C (L7805AC) and -40 to 125 °C (L7805AB).
- Can the L7805ACP be used for adjustable voltage applications?
Yes, the L7805ACP 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 L7805ACP?
The L7805ACP is commonly used in local on-card regulation, power supplies, industrial control systems, consumer electronics, and automotive systems.
- What package is the L7805ACP available in?
The L7805ACP is available in the TO-220FP package.
- How does the L7805ACP handle thermal issues?
The L7805ACP handles thermal issues through internal thermal shut-down and safe area protection, and it requires adequate heat sinking to deliver high current.
