Overview
The TPS3705-30DGN is a processor supervisor IC from Texas Instruments, designed to provide circuit initialization and timing supervision for DSP and processor-based systems. This device is part of the TPS370x-xx family and features a power-on reset generator, precision supply voltage monitoring, and an integrated watchdog timer. It is available in an 8-pin HVSSOP (DGN) package and operates over a temperature range of –40°C to 85°C. The TPS3705-30DGN ensures reliable system operation by monitoring supply voltages and providing reset signals when the voltage drops below the specified thresholds.
Key Specifications
| Parameter | Value | Parameter | Value |
|---|---|---|---|
| Manufacturer | Texas Instruments | Package Type | HVSSOP (DGN) |
| Pins | 8 | Operating Temperature Range | –40°C to 85°C |
| Monitored Voltages | 2.5 V, 3 V, 3.3 V, 5 V | Output Driver Type / Reset Output | Active-low, Push-pull |
| Reset Delay Time | 200 ms | Supply Current (Typ) | 30 µA |
| Supply Voltage (Min/Max) | 2 V / 6 V | Watchdog Timer | 1.6 sec |
| Reset Threshold Accuracy | 1.9 % | Special Features | Active Low Enable, Manual Reset, Watchdog Timer |
| Threshold Voltage (Typ) | 2.63 V, Adjustable | RoHS Status | Compliant |
Key Features
- Power-on reset generator with a fixed delay time of 200 ms (no external capacitor needed)
- Precision supply voltage monitor for 2.5 V, 3 V, 3.3 V, and 5 V
- Pin-for-pin compatible with the MAX705 through MAX708 Series
- Integrated watchdog timer (TPS3705-xx only)
- Voltage monitor for power-fail or low-battery warning
- Maximum supply current of 50 µA
- Available in 8-pin MSOP and 8-pin SOIC packages
- Manual reset input
- Active-low, push-pull reset output
Applications
- Designs using DSPs, microcontrollers, or microprocessors
- Industrial equipment
- Programmable controls
- Automotive systems
- Portable or battery-powered equipment
- Intelligent instruments
- Wireless communication systems
- Notebook or desktop computers
Q & A
- What is the primary function of the TPS3705-30DGN?
The primary function of the TPS3705-30DGN is to provide circuit initialization and timing supervision for DSP and processor-based systems, including power-on reset generation and supply voltage monitoring.
- What are the monitored supply voltages for the TPS3705-30DGN?
The TPS3705-30DGN monitors supply voltages of 2.5 V, 3 V, 3.3 V, and 5 V.
- What is the reset delay time for the TPS3705-30DGN?
The reset delay time for the TPS3705-30DGN is 200 ms.
- Does the TPS3705-30DGN require external components for operation?
No, the TPS3705-30DGN does not require external components for operation.
- What is the operating temperature range for the TPS3705-30DGN?
The operating temperature range for the TPS3705-30DGN is –40°C to 85°C.
- Is the TPS3705-30DGN RoHS compliant?
- What package types are available for the TPS3705-30DGN?
The TPS3705-30DGN is available in 8-pin MSOP and 8-pin SOIC packages.
- Does the TPS3705-30DGN have an integrated watchdog timer?
- What is the typical supply current for the TPS3705-30DGN?
The typical supply current for the TPS3705-30DGN is 30 µA.
- Can the TPS3705-30DGN be used in automotive systems?
