Overview
The TL7705BIDRG4 is a supply-voltage supervisor integrated circuit designed by Texas Instruments. It is primarily used as a reset controller in microcomputer and microprocessor systems to ensure reliable operation by monitoring the supply voltage for undervoltage conditions. This device is part of the TL77xx series, known for its precision voltage sensing and programmable time delay features.
Key Specifications
| Parameter | Value |
|---|---|
| Manufacturer | Texas Instruments |
| Part Number | TL7705BIDRG4 |
| Package Type | 8-SOIC |
| Number of Pins | 8 |
| Number of Voltages Monitored | 1 |
| Monitored Voltage (Typical) | 5 V |
| Threshold Voltage (Typical) | 4.55 V |
| Reset Threshold Accuracy | 2.2 % |
| Reset Output Type | Active High, Active Low, Open-Drain |
| Time Delay | Programmable (ms) |
| VCC (Min/Max) | 3.6 V / 18 V |
| Operating Temperature Range | -40°C to 85°C, -40°C to 125°C (depending on the variant) |
| Quiescent Current (Typical) | 1.8 mA |
| RoHS Status | Compliant |
Key Features
- Power-On Reset Generator: Automatically generates a reset signal upon power-on.
- Precision Voltage Sensor: Monitors the supply voltage with high accuracy.
- Temperature-Compensated Voltage Reference: Ensures stable operation across various temperatures.
- True and Complement Reset Outputs: Provides both active high and active low reset outputs.
- Externally Adjustable Pulse Duration: Allows for programmable time delay using an external capacitor.
- Manual Reset Input: Allows for manual reset via the RESIN pin.
- Open-Drain Reset Output: Requires an external pull-up resistor for proper operation.
Applications
- Wireless Communication Systems: Ensures reliable operation in wireless devices.
- Factory Automation: Used in industrial control systems to monitor supply voltages.
- Building Automation: Monitors supply voltages in building control systems.
- Servers and Data Centers: Ensures reliable operation of server and data center equipment.
- Notebooks and Desktop Computers: Used to monitor and reset microprocessors in personal computers.
- Set-Top Boxes (STB) and Digital Video Recorders (DVR): Ensures stable operation in consumer electronics.
Q & A
- What is the primary function of the TL7705BIDRG4?
The primary function of the TL7705BIDRG4 is to monitor the supply voltage and generate a reset signal if the voltage drops below a specified threshold.
- What is the typical monitored voltage for the TL7705BIDRG4?
The typical monitored voltage for the TL7705BIDRG4 is 5 V.
- What is the threshold voltage accuracy of the TL7705BIDRG4?
The threshold voltage accuracy of the TL7705BIDRG4 is 2.2%.
- What types of reset outputs does the TL7705BIDRG4 provide?
The TL7705BIDRG4 provides active high, active low, and open-drain reset outputs.
- How is the time delay for the reset signal adjusted?
The time delay for the reset signal is adjusted using an external capacitor connected to the CT pin.
- What is the operating temperature range for the TL7705BIDRG4?
The operating temperature range for the TL7705BIDRG4 is -40°C to 85°C or -40°C to 125°C, depending on the variant.
- Is the TL7705BIDRG4 RoHS compliant?
Yes, the TL7705BIDRG4 is RoHS compliant.
- What is the quiescent current of the TL7705BIDRG4?
The quiescent current of the TL7705BIDRG4 is typically 1.8 mA.
- What package types are available for the TL7705BIDRG4?
The TL7705BIDRG4 is available in an 8-SOIC package.
- Can the TL7705BIDRG4 be manually reset?
Yes, the TL7705BIDRG4 can be manually reset via the RESIN pin.
