Overview
The MC33166THG is a high-performance, fixed-frequency power switching regulator produced by onsemi. This device is part of the MC33166 series, which is designed for dc-to-dc converter applications. It operates as a voltage-mode regulator, capable of implementing step-down and voltage-inverting converters with a minimal number of external components. The MC33166THG is also suitable for step-up applications, making it versatile for various power management needs.
Key Specifications
| Parameter | Value | Unit |
|---|---|---|
| Power Supply Input Voltage (VCC) | 7.5 to 40 | V |
| Switch Output Voltage Range (VO) | -1.5 to + Vin | V |
| Output Switch Current | Up to 3.3 | A |
| Switching Frequency | 72 kHz | Hz |
| Output Duty Cycle | 0% to 95% | % |
| Operating Ambient Temperature (TA) | -40 to +85 | °C |
| Storage Temperature Range (Tstg) | -65 to +150 | °C |
| Thermal Shutdown Temperature | Typically at 170 | °C |
| Package Type | TO-220 (Vertical Mount), D2PAK (Surface Mount) |
Key Features
- High Output Current Capability: Up to 3.3 A switch current.
- Wide Input Voltage Range: Operates from 7.5 V to 40 V.
- Adjustable Output Voltage: From 5.05 V to 40 V.
- Fixed Frequency Oscillator: 72 kHz with on-chip timing components.
- Precision Reference: 2% precision reference voltage.
- Protection Features: Cycle-by-cycle current limiting, undervoltage lockout, and thermal shutdown.
- Low Power Standby Mode: Reduces power supply current to 36 μA.
- Compact and Highly Integrated Design: Suitable for high power applications with minimal external components.
Applications
- Industrial Equipment: Power supplies and control systems.
- Automotive Electronics: Battery management and power conversion.
- Telecommunications Equipment: Power supplies and voltage regulation.
- Portable Devices: Efficient power management for battery-powered devices.
- Power Supplies: Buck, boost, and inverting configurations.
Q & A
- What is the input voltage range of the MC33166THG?
The MC33166THG operates from an input voltage range of 7.5 V to 40 V.
- What is the maximum output switch current of the MC33166THG?
The maximum output switch current is up to 3.3 A.
- What is the switching frequency of the MC33166THG?
The switching frequency is 72 kHz.
- What are the key protection features of the MC33166THG?
The key protection features include cycle-by-cycle current limiting, undervoltage lockout, and thermal shutdown.
- What is the operating ambient temperature range of the MC33166THG?
The operating ambient temperature range is -40°C to +85°C.
- What types of packages are available for the MC33166THG?
The device is available in TO-220 (vertical mount) and D2PAK (surface mount) packages.
- What is the precision of the reference voltage in the MC33166THG?
The reference voltage has a precision of 2%.
- Can the MC33166THG be used in step-up configurations?
Yes, the MC33166THG can be used in step-up, step-down, and voltage-inverting configurations.
- What is the thermal shutdown temperature of the MC33166THG?
The thermal shutdown typically occurs at 170°C.
- Is the MC33166THG RoHS compliant?
Yes, the MC33166THG is lead-free and RoHS compliant.
