Overview
The MC34164D-5G 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 requiring extended battery life and offers an economical solution for low-voltage detection with a single external resistor. The MC34164D-5G features a temperature-compensated bandgap reference, a comparator with precise thresholds and built-in hysteresis, and an open collector reset output capable of sinking in excess of 6.0 mA.
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 |
| Operating Junction Temperature | TJ | - | - | +150 | °C |
| Operating Ambient Temperature Range | TA | 0 | - | +70 | °C |
| Storage Temperature Range | Tstg | -65 | - | +150 | °C |
| Threshold Voltage (High State Output, Vin Increasing) | VIH | 4.15 | 4.15 | 4.45 | V |
| Threshold Voltage (Low State Output, Vin Decreasing) | VIL | 4.09 | 4.13 | 4.33 | V |
| Hysteresis (ISink = 100 μA) | VH | 0.02 | 0.09 | - | V |
| Output Sink Saturation (Vin = 4.0 V, ISink = 1.0 mA) | VOL | 0.14 | 0.1 | 0.4 | V |
| Output Sink Current (Vin, Reset = 4.0 V) | ISink | 7.0 | 20 | 50 | mA |
| Quiescent Input Current (Vin = 5.0 V) | Iin | - | 12 | 32 | μA |
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
- Pb-Free and RoHS Compliant
Applications
The MC34164D-5G is suitable for various applications including:
- Direct monitoring of 5.0 V power supplies in microprocessor and logic systems.
- Use in appliance, automotive, consumer, and industrial equipment.
- Solar powered battery chargers and low voltage gate drive protection for MOSFETs.
- General voltage monitoring and reset control in low-power systems.
Q & A
- What is the primary function of the MC34164D-5G?
The MC34164D-5G is primarily used as an undervoltage sensing circuit and reset controller in microprocessor-based systems.
- What are the typical operating voltage ranges for the MC34164D-5G?
The device operates within an input voltage range of 1.0 V to 10 V.
- What is the significance of the built-in hysteresis in the MC34164D-5G?
The built-in hysteresis prevents erratic reset operations by ensuring a stable threshold voltage.
- How much current can the reset output sink?
The reset output can sink in excess of 6.0 mA.
- What is the quiescent input current of the MC34164D-5G at 5.0 V input?
The quiescent input current is as low as 12 μA at 5.0 V input.
- What are the available package options for the MC34164D-5G?
The device is available in TO-92, TSOP-5, SOIC-8, and Micro8 surface mount packages.
- Is the MC34164D-5G RoHS compliant?
Yes, the MC34164D-5G is Pb-Free and RoHS compliant.
- What is the operating ambient temperature range for the MC34164D-5G?
The operating ambient temperature range is from 0°C to +70°C.
- Can the hysteresis of the comparator be adjusted?
Yes, the hysteresis can be increased with the addition of an external resistor RH.
- What are some common applications of the MC34164D-5G?
Common applications include direct monitoring of power supplies in microprocessor systems, automotive, consumer, and industrial equipment, as well as solar powered battery chargers and MOSFET gate drive protection.
