Overview
The MC34161DMR2G, produced by onsemi, is a universal voltage monitor designed for a wide range of voltage sensing applications. This device offers an economical solution for detecting both positive and negative voltages. It features two comparator channels with hysteresis, a unique Mode Select Input for channel programming, a pinned out 2.54 V reference, and two open collector outputs capable of sinking over 10 mA. Each comparator channel can be configured as either inverting or noninverting, enabling over, under, and window detection of voltages. The minimum supply voltage required for full functionality is 2.0 V for positive voltage sensing and 4.0 V for negative voltage sensing.
Key Specifications
| Characteristics | Symbol | Min | Typ | Max | Unit |
|---|---|---|---|---|---|
| Threshold Voltage (Vin Increasing) | Vth | 1.245 | 1.235 | 1.27 | V |
| Output Sink Saturation Voltage (ISink = 2.0 mA) | VOL | - | - | 0.22 | V |
| Reference Output Voltage (IO = 0 mA, TA = 25°C) | Vref | 2.48 | 2.54 | 2.60 | V |
| Load Regulation (IO = 0 mA to 2.0 mA) | Regload | - | - | 15 mV | mV |
| Line Regulation (VCC = 4.0 V to 40 V) | Regline | - | - | 15 mV | mV |
| Power Supply Current (VCC = 5.0 V) | ICC | - | - | 450 μA | μA |
| Operating Voltage Range (Positive Sensing) | VCC | 2.0 | - | 40 | V |
| Operating Voltage Range (Negative Sensing) | VCC | 4.0 | - | 40 | V |
Key Features
- Unique Mode Select Input: Allows channel programming for various voltage sensing applications.
- Over, Under, and Window Voltage Detection: Capable of detecting over, under, and window voltages for both positive and negative voltages.
- Positive and Negative Voltage Detection: Fully functional at 2.0 V for positive voltage sensing and 4.0 V for negative voltage sensing.
- Pinned Out 2.54 V Reference: With current limit protection and a guaranteed tolerance of ±2.4% at room temperature.
- Low Standby Current: Efficient power consumption.
- Open Collector Outputs: Capable of sinking in excess of 10 mA for enhanced device flexibility.
- Pb-Free Packages: Available and RoHS compliant.
- NCV Version for Automotive: AEC-Q100 qualified and PPAP capable for automotive and other demanding applications.
Applications
- Appliance Equipment: Monitoring critical voltages in household and commercial appliances.
- Automotive Systems: Used in various automotive applications such as body electronics, braking, infotainment, instrument clusters, navigation, occupant comfort, occupant protection, and powertrain systems.
- Consumer Electronics: Voltage monitoring in consumer devices.
- Industrial Equipment: Monitoring voltages in industrial machinery and control systems.
Q & A
- What is the minimum supply voltage required for the MC34161DMR2G to sense positive voltages?
The minimum supply voltage required for positive voltage sensing is 2.0 V.
- What is the minimum supply voltage required for the MC34161DMR2G to sense negative voltages?
The minimum supply voltage required for negative voltage sensing is 4.0 V.
- What types of voltage detection can the MC34161DMR2G perform?
The device can perform over, under, and window voltage detection for both positive and negative voltages.
- What is the function of the Mode Select Input on the MC34161DMR2G?
The Mode Select Input allows the user to program each comparator channel as either inverting or noninverting for various voltage sensing applications.
- What is the output current capability of the 2.54 V reference on the MC34161DMR2G?
The 2.54 V reference can source in excess of 2.0 mA output current and has built-in short circuit protection.
- What are the typical applications of the MC34161DMR2G?
Applications include appliance, automotive, consumer, and industrial equipment voltage monitoring.
- Is the MC34161DMR2G RoHS compliant?
Yes, the MC34161DMR2G is Pb-free and RoHS compliant.
- What is the significance of the NCV prefix in the MC34161DMR2G?
The NCV prefix indicates that the device is AEC-Q100 qualified and PPAP capable, making it suitable for automotive and other demanding applications.
- What is the maximum operating temperature for the MC34161DMR2G?
The maximum operating temperature for the MC34161 is +70°C, for the MC33161 is +105°C, and for the NCV33161 is +125°C.
- How much current can the open collector outputs of the MC34161DMR2G sink?
The open collector outputs can sink in excess of 10 mA.
