Overview
The MC34167T is a high-performance DC-DC converter manufactured by onsemi. It is designed for applications that require efficient power regulation, such as automotive systems, telecom power management, and industrial power solutions. This converter integrates a powerful 4.5 A output switch, eliminating the need for external transistors and enabling the creation of high-power outputs efficiently. The MC34167T also features built-in protection mechanisms including overcurrent protection, thermal shutdown, and a low battery detector, ensuring the safety and reliability of battery-powered devices.
Key Specifications
| Characteristic | Symbol | Min | Typ | Max | Unit |
|---|---|---|---|---|---|
| Oscillator Frequency (VCC = 7.5 V to 40 V) | fOSC | 65 | 72 | 79 | kHz |
| Voltage Feedback Input Threshold | VFB(th) | 4.95 | 5.00 | 5.20 | V |
| Line Regulation (VCC = 7.5 V to 40 V, TA = +25°C) | Regline | - | 0.03 | 0.078 | %/V |
| Input Bias Current (VFB = VFB(th) + 0.15 V) | IIB | - | 0.15 | 1.0 | μA |
| Power Supply Rejection Ratio (VCC = 10 V to 20 V, f = 120 Hz) | PSRR | 60 | 80 | - | dB |
| Output Voltage Swing High State (ISource = 75 μA, VFB = 4.5 V) | VOH | 4.2 | - | 4.9 | V |
| Output Voltage Swing Low State (ISink = 0.4 mA, VFB = 5.5 V) | VOL | 1.6 | - | 1.9 | V |
| Current Limit Threshold (VCC = 7.5 V) | Ipk(switch) | 5.5 | 6.5 | 8.0 | A |
| Startup Threshold (VCC Increasing, TA = +25°C) | Vth(UVLO) | 5.5 | 5.9 | 6.3 | V |
| Hysteresis (VCC Decreasing, TA = +25°C) | VH(UVLO) | 0.6 | 0.9 | 1.2 | V |
| Power Supply Current (TA = +25°C) | ICC | - | 36 | 100 | μA/mA |
| Package Type | - | - | - | TO-220-5 |
Key Features
- Wide Input Voltage Range: 4.5V to 36V, providing flexibility for various applications.
- Low Dropout Voltage: Ensures stable output voltage even under heavy load conditions.
- High Output Current Capability: Up to 4.5 A, depending on the specific design and application requirements.
- Protection Features: Includes thermal shutdown, safe operating area (SOA) protection, and overcurrent protection to prevent damage due to overheating or excessive input/output conditions.
- Efficient Power Conversion: Supports both high and low duty cycle operation, allowing for efficient power conversion across a range of load conditions.
- Integrated Switch: Eliminates the need for external transistors, enabling the creation of high-power outputs efficiently.
- Low Battery Detector: Essential for ensuring the safety and reliability of battery-powered devices.
Applications
The MC34167T is designed for efficient power regulation in various applications, including:
- Automotive Systems: Provides stable power supply for automotive electronics.
- Telecom Power Management: Ensures voltage stability in telecom equipment.
- Industrial Power Solutions: Suitable for industrial applications requiring high efficiency and stable voltage regulation.
Q & A
- What is the MC34167T?
The MC34167T is a high-performance DC-DC converter from onsemi, designed for efficient power regulation in various applications.
- What is the input voltage range of the MC34167T?
The input voltage range is 4.5V to 36V.
- What are the key protection features of the MC34167T?
The key protection features include thermal shutdown, safe operating area (SOA) protection, overcurrent protection, and a low battery detector.
- What is the maximum output current of the MC34167T?
The maximum output current is up to 4.5 A, depending on the specific design and application requirements.
- In what package is the MC34167T available?
The MC34167T is available in a TO-220-5 package.
- What are some typical applications of the MC34167T?
Typical applications include automotive systems, telecom power management, and industrial power solutions.
- Does the MC34167T support high and low duty cycle operation?
Yes, it supports both high and low duty cycle operation for efficient power conversion across a range of load conditions.
- What is the purpose of the low battery detector in the MC34167T?
The low battery detector is essential for ensuring the safety and reliability of battery-powered devices.
- How does the MC34167T ensure stable output voltage?
The MC34167T ensures stable output voltage through its low dropout voltage feature, even under heavy load conditions.
- What is the oscillator frequency of the MC34167T?
The oscillator frequency is approximately 72 kHz.
- Does the MC34167T require external transistors for high-power outputs?
No, the MC34167T integrates a powerful 4.5 A output switch, eliminating the need for external transistors.
