Overview
The MC33164D-3R2, produced by onsemi, is a micropower undervoltage sensing circuit designed for use as a reset controller in portable microprocessor-based systems. This device is part of the MC33164 series and is optimized for applications where extended battery life is crucial. It features a bandgap reference, a comparator with precise thresholds, and built-in hysteresis to prevent erratic reset operations. The MC33164D-3R2 is packaged in an SOIC-8 format and is Pb-free and RoHS compliant.
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 |
| Clamp Diode Forward Current, Reset to Input Pin | IF | - | - | 100 | mA |
| Maximum Power Dissipation @ TA = 25°C (SOIC-8) | PD | - | - | 700 | mW |
| Thermal Resistance, Junction-to-Air (SOIC-8) | RθJA | - | - | 178 | °C/W |
| Operating Junction Temperature | TJ | - | - | 150 | °C |
| Operating Ambient Temperature Range | TA | -40 | - | 125 | °C |
| Storage Temperature Range | Tstg | -65 | - | 150 | °C |
| Threshold Voltage (High State Output, Vin Increasing) | VIH | 2.55 | 2.55 | 2.71 | V |
| Threshold Voltage (Low State Output, Vin Decreasing) | VIL | 2.55 | 2.55 | 2.65 | V |
| Hysteresis (ISink = 100 µA) | VH | - | 0.03 | 0.06 | V |
| Output Sink Saturation (Vin = 4.0 V, ISink = 1.0 mA) | VOL | - | - | 0.14 | V |
| Quiescent Input Current (Vin = 5.0 V) | Iin | - | - | 12 | µA |
Key Features
- Temperature Compensated Reference
- Monitors 3.0 V (MC33164-3) or 5.0 V (MC33164-5) Power Supplies
- 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 SOIC-8, Micro8, and TO-92 Packages
- Pb-free and RoHS Compliant
Applications
The MC33164D-3R2 is suitable for various applications including:
- Direct monitoring of 3.0 V or 5.0 V power supplies in microprocessor-based systems.
- Use in appliance, automotive, consumer, and industrial equipment.
- Portable electronic devices where extended battery life is essential.
Q & A
- What is the primary function of the MC33164D-3R2?
The MC33164D-3R2 is designed as an undervoltage sensing circuit and reset controller for microprocessor-based systems.
- What are the operating ambient temperature ranges for the MC33164D-3R2?
The operating ambient temperature range is from -40°C to +125°C.
- What is the maximum power dissipation at 25°C for the SOIC-8 package?
The maximum power dissipation at 25°C for the SOIC-8 package is 700 mW.
- What is the thermal resistance, junction-to-air, for the SOIC-8 package?
The thermal resistance, junction-to-air, for the SOIC-8 package is 178 °C/W.
- What is the quiescent input current at 5.0 V input voltage?
The quiescent input current at 5.0 V input voltage is 12 µA.
- What is the reset output sink current capability?
The reset output is capable of sinking in excess of 6.0 mA.
- Does the MC33164D-3R2 have built-in hysteresis?
Yes, the MC33164D-3R2 features built-in hysteresis to prevent erratic reset operations.
- What are the typical threshold voltages for the comparator?
The typical threshold voltages are 2.55 V for both high and low state outputs.
- Is the MC33164D-3R2 Pb-free and RoHS compliant?
Yes, the MC33164D-3R2 is Pb-free and RoHS compliant.
- What are the storage temperature ranges for the MC33164D-3R2?
The storage temperature range is from -65°C to +150°C.
