Overview
The MC33151DG, produced by onsemi, is a dual inverting high-speed driver designed to interface low current digital circuitry with power MOSFETs. This device is particularly suited for applications requiring the drive of large capacitive loads with high slew rates. It features low input current, making it compatible with CMOS and LSTTL logic, and includes input hysteresis for fast output switching independent of input transition time. The MC33151DG also includes an undervoltage lockout with hysteresis to prevent erratic system operation at low supply voltages.
Key Specifications
| Parameter | Symbol | Min | Typ | Max | Unit |
|---|---|---|---|---|---|
| Power Supply Voltage | VCC | 6.5 | - | 18 | V |
| Logic Input Threshold Voltage | VIH/VIL | 0.8 / 1.75 | 1.58 / 2.6 | - | V |
| Input Current - High State | IIH | - | 200 | 500 | μA |
| Input Current - Low State | IIL | - | 20 | 100 | μA |
| Drive Output Current (Source/Sink) | IO | - | 1.5 | - | A |
| 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 |
| Propagation Delay (10% Input to 10% Output, CL = 1.0 nF) | tPLH/tPHL | - | 35 / 36 | - | ns |
| Operating Ambient Temperature | TA | -40 | - | 85 | °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
- Low Standby Current
- Efficient High Frequency Operation
- Enhanced System Performance with Common Switching Regulator Control ICs
- Pin Out Equivalent to DS0026 and MMH0026
- Pb-Free and Halide-Free Devices
Applications
The MC33151DG is typically used in various applications including:
- Switching Power Supplies
- DC to DC Converters
- Capacitor Charge Pump Voltage Doublers/Inverters
- Motor Controllers
Q & A
- What is the primary function of the MC33151DG?
The MC33151DG is a dual inverting high-speed driver designed to interface low current digital circuitry with power MOSFETs.
- What are the typical applications of the MC33151DG?
Typical applications include switching power supplies, DC to DC converters, capacitor charge pump voltage doublers/inverters, and motor controllers.
- What is the maximum power supply voltage for the MC33151DG?
The maximum power supply voltage (VCC) is 18 V.
- What is the output current capability of the MC33151DG?
Each totem pole output can source and sink up to 1.5 A.
- What is the purpose of the undervoltage lockout in the MC33151DG?
The undervoltage lockout with hysteresis 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.
- Is the MC33151DG compatible with CMOS and LSTTL logic?
- What are the package options available for the MC33151DG?
The device is available in dual-in-line (PDIP-8) and surface mount (SOIC-8) packages.
- What is the operating ambient temperature range for the MC33151DG?
The operating ambient temperature range is -40°C to +85°C.
- Does the MC33151DG have any built-in protection features?
The device includes an undervoltage lockout with hysteresis and internal diodes for clamping positive voltage transients, but it does not have overcurrent or thermal protection.
- How does the MC33151DG handle output ringing during transitions?
The device is immune to output latchup, and proper power supply bypassing must be observed to prevent output ringing from exceeding the maximum device rating.
