Overview
The MC33151DR2G, produced by Onsemi, is a high-speed dual MOSFET driver designed to interface low current digital circuitry with power MOSFETs. This device is constructed using Schottky clamped Bipolar Analog technology, offering high performance and ruggedness in hostile industrial environments. It features two independent channels with high current totem pole outputs, making it ideal for driving large capacitive loads with high slew rates.
Key Specifications
| Characteristic | Symbol | Min | Typ | Max | Unit |
|---|---|---|---|---|---|
| Power Supply Voltage | VCC | - | - | 20 | V |
| Logic Input Voltage | Vin | -0.3 | - | VCC | V |
| Drive Output Current | IO | - | - | 1.5 | A |
| Input Threshold Voltage | VIH/VIL | 0.8 | 1.67 | 2.6 | V |
| Input Current - High State | IIH | - | - | 200 | μA |
| Input Current - Low State | IIL | - | - | 20 | μA |
| Output Rise Time (10% to 90%, CL = 1.0 nF) | tr | - | 14 | - | ns |
| Output Fall Time (90% to 10%, CL = 1.0 nF) | tf | - | 16 | - | ns |
| Operating Ambient Temperature | TA | -40 | - | 85 | °C |
| Operating Junction Temperature | TJ | - | - | 150 | °C |
Key Features
- Two independent channels with 1.5 A totem pole output
- Output rise and fall times of 15 ns with 1000 pF load
- CMOS/LSTTL compatible inputs with hysteresis
- Undervoltage lockout with hysteresis to prevent erratic system operation at low supply voltages
- Low standby current
- Efficient high frequency operation
- Enhanced system performance with common switching regulator control ICs
- Pb-Free and Halide-Free devices
- Internal diode to VCC for clamping positive voltage transients
Applications
- Switching power supplies
- DC to DC converters
- Capacitor charge pump voltage doublers/inverters
- Motor controllers
- High frequency printed circuit applications requiring low current digital circuitry to drive large capacitive loads
Q & A
- What is the primary function of the MC33151DR2G?
The MC33151DR2G is a high-speed dual MOSFET driver designed to interface low current digital circuitry with power MOSFETs.
- What are the key features of the MC33151DR2G's input stage?
The input stage features CMOS/LSTTL compatible inputs with hysteresis, ensuring fast output switching independent of input transition time.
- What is the maximum output current capability of each channel?
Each totem pole drive output is capable of sourcing and sinking up to 1.5 A.
- What is the purpose of the undervoltage lockout (UVLO) in the MC33151DR2G?
The UVLO prevents erratic system operation at low supply voltages by forcing the drive outputs into a low state as VCC rises from 1.4 V to the 5.8 V upper threshold.
- What are the typical applications of the MC33151DR2G?
Typical applications include switching power supplies, DC to DC converters, capacitor charge pump voltage doublers/inverters, and motor controllers.
- What is the operating ambient temperature range for the MC33151DR2G?
The operating ambient temperature range is -40°C to +85°C.
- How does the MC33151DR2G handle output ringing and overshoot?
The device includes internal diodes to clamp positive and negative voltage transients, and external Schottky diodes can be used to reduce driver power dissipation due to excessive ringing.
- What are the package options available for the MC33151DR2G?
The device is available in SOIC-8 (Pb-Free) and PDIP-8 (Pb-Free) packages.
- Is the MC33151DR2G immune to output latchup conditions?
Yes, the MC33151DR2G is immune to output latchup conditions.
- What is the significance of the 100 kΩ pulldown resistor in the output stage?
The 100 kΩ pulldown resistor keeps the MOSFET gate low when VCC is less than 1.4 V.
