Overview
The TPS3619-33DGK is a supervisory circuit produced by Texas Instruments, designed to monitor and control processor activity in various electronic systems. This component is part of the TPS3619 and TPS3620 families, which are known for their precision supply voltage monitoring and backup-battery switchover capabilities. The TPS3619-33DGK is specifically tailored for systems requiring a nominal supply voltage of 3.3 V and is packaged in an 8-pin MSOP package. It is characterized for operation over a temperature range of –40°C to +85°C, making it suitable for a wide range of applications.
Key Specifications
| Parameter | Min | Typ | Max | Unit |
|---|---|---|---|---|
| Supply Voltage (VDD) | 1.65 | 5.5 | V | |
| Battery Supply Voltage (VBAT) | 1.5 | 5.5 | V | |
| Input Voltage (VI) | 0 | VDD + 0.3 | V | |
| High-Level Input Voltage (VIH) | 0.7 x VDD | V | ||
| Low-Level Input Voltage (VIL) | 0.3 x VDD | V | ||
| Continuous Output Current at VOUT (IO) | 300 | mA | ||
| Operating Free-Air Temperature Range (TA) | –40 | +85 | °C | |
| Battery Supply Current (IBAT) | 0.1 | 0.5 | µA | |
| Input Capacitance (Ci) | 5 | pF | ||
| Delay Time (td) | 60 | 100 | 140 | ms |
Key Features
- Precision supply voltage monitor for 3.3 V and 5 V systems.
- Backup-battery switchover for data retention of CMOS RAM.
- Power on reset generator with a fixed 100-ms reset delay time.
- Voltage monitor for power-fail or low-battery monitoring.
- Battery freshness seal (for TPS3619).
- Pin-for-pin compatible with MAX819, MAX703, and MAX704.
- 8-pin MSOP package.
- Temperature range of –40°C to +85°C.
Applications
- Fax Machines.
- Set-Top Boxes.
- Advanced Voice Mail Systems.
- Portable Battery-Powered Equipment.
- Computer Equipment.
- Advanced Modems.
- Automotive Systems.
- Portable Long-Time Monitoring Equipment.
- Point-of-Sale Equipment.
Q & A
- What is the primary function of the TPS3619-33DGK? The primary function is to monitor and control processor activity by providing precision supply voltage monitoring and backup-battery switchover.
- What is the nominal supply voltage for the TPS3619-33DGK? The nominal supply voltage is 3.3 V.
- What is the temperature range for the TPS3619-33DGK? The temperature range is –40°C to +85°C.
- What is the maximum battery supply current for the TPS3619-33DGK? The maximum battery supply current is 100 nA.
- What is the package type for the TPS3619-33DGK? The package type is an 8-pin MSOP.
- Is the TPS3619-33DGK compatible with other supervisory circuits? Yes, it is pin-for-pin compatible with MAX819, MAX703, and MAX704.
- What is the purpose of the power on reset generator in the TPS3619-33DGK? The power on reset generator provides a fixed 100-ms reset delay time to ensure proper system reset.
- What are some common applications for the TPS3619-33DGK? Common applications include fax machines, set-top boxes, advanced voice mail systems, and portable battery-powered equipment.
- How does the TPS3619-33DGK handle low-battery conditions? It monitors for power-fail or low-battery conditions and switches to the backup battery to retain CMOS RAM data.
- What precautions should be taken when handling the TPS3619-33DGK? The component should be handled with appropriate precautions to avoid ESD damage.
