Overview
The MC33166TH is a high-performance, fixed-frequency power switching regulator produced by onsemi. This device is part of the MC33166 series, designed for dc-to-dc converter applications, particularly in step-down and voltage-inverting configurations. It can also be used in step-up applications with a minimal number of external components. The MC33166TH features an internal temperature-compensated reference, a fixed-frequency oscillator with on-chip timing components, a latching pulse width modulator, a high-gain error amplifier, and a high-current output switch. The device is packaged in a TO-220 type package and is known for its robust protection features and high efficiency.
Key Specifications
| Characteristic | Min | Typ | Max | Unit |
|---|---|---|---|---|
| Input Voltage | 7.5 V | - | 40 V | V |
| Output Voltage | 5.05 V | - | 40 V | V |
| Output Current | - | - | 3.3 A | A |
| Switching Frequency | - | 72 kHz | - | kHz |
| Operating Temperature Range | -40°C | - | +85°C | °C |
| Package Type | - | - | TO-220 | - |
| Topology | - | - | Buck, Boost | - |
| Thermal Shutdown | - | - | Typically at 170°C | °C |
Key Features
- High-efficiency, synchronous buck-boost regulator capable of providing up to 3.3 A of output current.
- Adjustable output voltage from 5.05 V to 40 V.
- Wide input voltage range of 7.5 V to 40 V.
- Fixed-frequency oscillator at 72 kHz with on-chip timing components.
- Precision 2% reference voltage.
- Cycle-by-cycle current limiting and thermal shutdown protection.
- Low power standby mode reducing power supply current to 36 μA.
- Compact and highly integrated design in D2PAK-5 surface mount package.
- Soft-start function and overcurrent protection.
Applications
- Industrial equipment.
- Automotive electronics.
- Telecommunications equipment.
- Portable devices.
- Power supplies.
Q & A
- What is the input voltage range of the MC33166TH?
The input voltage range is from 7.5 V to 40 V. - What is the maximum output current of the MC33166TH?
The maximum output current is up to 3.3 A. - What is the switching frequency of the MC33166TH?
The switching frequency is 72 kHz. - What are the operating temperature ranges for the MC33166TH?
The operating temperature range is from -40°C to +85°C. - What type of package is the MC33166TH available in?
The MC33166TH is available in a TO-220 type package. - Does the MC33166TH have thermal shutdown protection?
Yes, it has thermal shutdown protection typically at 170°C. - What are the key protection features of the MC33166TH?
The key protection features include cycle-by-cycle current limiting, undervoltage lockout, and thermal shutdown. - Is the MC33166TH suitable for high-power applications?
Yes, it is suitable for high-power applications due to its high output current capability and robust protection features. - Can the MC33166TH be used in step-up applications?
Yes, it can be used in step-up applications in addition to step-down and voltage-inverting configurations. - Is the MC33166TH RoHS compliant?
Yes, the MC33166TH is lead-free and RoHS compliant.
