Overview
The MC34164D-5R2G is a micropower undervoltage sensing circuit designed by onsemi, specifically for use as a reset controller in portable microprocessor-based systems. This device is optimized for applications where extended battery life is crucial. It offers an economical solution for low voltage detection with a single external resistor and features a bandgap reference, a comparator with precise thresholds, and built-in hysteresis to prevent erratic reset operations.
Key Specifications
| Characteristic | Symbol | Min | Typ | Max | Unit |
|---|---|---|---|---|---|
| Power Input Supply Voltage | Vin | -1.0 | - | 12 | V |
| Reset Output Voltage | VO | -1.0 | - | 12 | V |
| Reset Output Sink Current | ISink | - | - | Internally Limited | mA |
| Threshold Voltage (High State Output) | VIH | 4.33 | 4.27 | 4.45 | V |
| Threshold Voltage (Low State Output) | VIL | 4.15 | 4.15 | 4.33 | V |
| Hysteresis | VH | 0.02 | - | 0.09 | V |
| Output Sink Saturation (Vin = 4.0 V, ISink = 1.0 mA) | VOL | - | - | 0.14 | V |
| Output Sink Current (Vin, Reset = 4.0 V) | ISink | - | 7.0 | 50 | mA |
| Operating Input Voltage Range | Vin | 1.0 | - | 10 | V |
| Quiescent Input Current (Vin = 5.0 V) | Iin | - | 12 | 20 | μA |
| Operating Ambient Temperature Range | TJ | -40 | - | 125 | °C |
Key Features
- Temperature Compensated Reference
- Monitors 5.0 V Power Supplies (MC34164-5)
- Precise Comparator Thresholds Guaranteed Over Temperature
- Comparator Hysteresis Prevents Erratic Reset
- Reset Output Capable of Sinking in Excess of 6.0 mA
- Internal Clamp Diode for Discharging Delay Capacitor
- Guaranteed Reset Operation With 1.0 V Input
- Extremely Low Standby Current: As Low as 9.0 μA
- Economical TO-92 (TO-226AA), TSOP-5, SOIC-8 and Micro8 Surface Mount Packages
- NCV Prefix for Automotive and Other Applications Requiring Site and Control Changes
- Pb-Free Packages are Available and RoHS Compliant
Applications
The MC34164D-5R2G is suitable for a variety of applications, including direct monitoring of 5.0 V MPU/logic power supplies in:
- Appliance equipment
- Automotive systems
- Consumer electronics
- Industrial equipment
Q & A
- What is the primary function of the MC34164D-5R2G?
The MC34164D-5R2G is designed as a reset controller for portable microprocessor-based systems, specifically to monitor and reset the system in case of undervoltage conditions. - What are the typical threshold voltages for the MC34164-5?
The high state output threshold voltage is typically around 4.27 V, and the low state output threshold voltage is typically around 4.15 V. - What is the maximum sink current of the reset output?
The reset output is capable of sinking in excess of 6.0 mA. - What is the operating input voltage range of the MC34164D-5R2G?
The operating input voltage range is from 1.0 V to 10 V. - How low can the standby current be?
The standby current can be as low as 9.0 μA. - What types of packages are available for the MC34164D-5R2G?
The device is available in TO-92 (TO-226AA), TSOP-5, SOIC-8, and Micro8 surface mount packages. - Is the MC34164D-5R2G RoHS compliant?
Yes, the MC34164D-5R2G is Pb-Free and RoHS compliant. - What is the significance of the NCV prefix in some versions of this device?
The NCV prefix is used for automotive and other applications that require site and control changes. - What is the operating ambient temperature range for the MC34164D-5R2G?
The operating ambient temperature range is from -40°C to +125°C for the NCV versions and from 0°C to +70°C for the non-NCV versions. - How does the internal clamp diode function in the MC34164D-5R2G?
The internal clamp diode is used for discharging delay capacitors.
