Overview
The MC78T05ACT is a fixed-voltage regulator from onsemi, designed to provide a stable output voltage with high current capability. This monolithic integrated circuit is part of the 78XX series, known for its reliability and versatility in various electronic applications. The MC78T05ACT is specifically tailored for local, on-card regulation, making it suitable for a wide range of electronic systems.
Key Specifications
| Characteristic | Symbol | Min | Typ | Max | Unit |
|---|---|---|---|---|---|
| Output Voltage (TJ = 25°C) | VO | 4.75 | 5.0 | 5.25 | Vdc |
| Output Voltage (5.0 mA ≤ IO ≤ 1.0 A, PD ≤ 15 W) | VO | 4.8 | 5.0 | 5.2 | Vdc |
| Line Regulation (7.5 Vdc ≤ Vin ≤ 20 Vdc, IO = 1.0 A) | Regline | - | 0.5 | 1.3 | mV |
| Load Regulation (5.0 mA ≤ IO ≤ 1.0 A) | Regload | - | 0.15 | 1.3 | mV |
| Quiescent Current | IB | 3.2 | - | 8.0 | mA |
| Peak Output Current (TJ = 25°C) | Imax | - | - | 2.2 | A |
| Short Circuit Current Limit (TA = 25°C) | ISC | - | - | 0.2 | A |
| Output Noise Voltage (10 Hz ≤ f ≤ 100 kHz) | Vn | - | - | 10 | μV/VO |
| Output Resistance (f = 1.0 kHz) | rO | - | - | 0.9 | mΩ |
| Average Temperature Coefficient of Output Voltage | TCVO | - | - | -0.3 | mV/°C |
Key Features
- High Output Current: The MC78T05ACT can deliver output currents in excess of 1.0 A with adequate heatsinking.
- Internal Current Limiting: The device includes internal current limiting to protect against overcurrent conditions.
- Thermal Shutdown: It features thermal shutdown to prevent overheating and ensure device reliability.
- Safe-Area Compensation: The regulator includes safe-area compensation to maintain stable operation under various load conditions.
- No External Components Required: The MC78T05ACT does not require external components for basic operation, simplifying circuit design.
- Adjustable Voltage and Current Capability: With external components, the device can be configured to provide adjustable voltages and currents.
Applications
- Local, On-Card Regulation: Ideal for providing stable voltage regulation within a circuit board or module.
- Power Supplies: Used in various power supply designs where a fixed output voltage is required.
- Electronic Instruments: Suitable for use in electronic instruments, such as audio equipment, medical devices, and industrial control systems.
- Automotive Systems: Can be used in automotive applications where a reliable and stable voltage source is necessary.
Q & A
- What is the typical output voltage of the MC78T05ACT?
The typical output voltage of the MC78T05ACT is 5.0 Vdc.
- What is the maximum output current the MC78T05ACT can deliver?
The MC78T05ACT can deliver output currents in excess of 1.0 A with adequate heatsinking.
- Does the MC78T05ACT require external components for basic operation?
No, the MC78T05ACT does not require external components for basic operation.
- What are the key protection features of the MC78T05ACT?
The key protection features include internal current limiting and thermal shutdown.
- Can the MC78T05ACT be used for adjustable voltage and current applications?
Yes, with external components, the MC78T05ACT can be configured to provide adjustable voltages and currents.
- What is the typical quiescent current of the MC78T05ACT?
The typical quiescent current of the MC78T05ACT is 3.2 mA to 8.0 mA.
- What is the short circuit current limit of the MC78T05ACT?
The short circuit current limit of the MC78T05ACT is 0.2 A.
- What is the output noise voltage of the MC78T05ACT?
The output noise voltage of the MC78T05ACT is 10 μV/VO over the frequency range of 10 Hz to 100 kHz.
- What is the output resistance of the MC78T05ACT at 1.0 kHz?
The output resistance of the MC78T05ACT at 1.0 kHz is 0.9 mΩ.
- What is the average temperature coefficient of output voltage for the MC78T05ACT?
The average temperature coefficient of output voltage for the MC78T05ACT is -0.3 mV/°C.
