Overview
The TPS3620-33DGKT is a backup-battery supervisor for RAM retention designed by Texas Instruments. This component is part of the TPS3619 and TPS3620 families of supervisory circuits, which are engineered to monitor and control processor activity by providing backup-battery switchover for data retention of CMOS RAM. It ensures reliable operation in various power conditions, making it suitable for a wide range of applications.
Key Specifications
| Parameter | Min | |||
|---|---|---|---|---|
| Supply Voltage (VDD) | 1.65 | 5.5 | V | |
| Battery Supply Voltage (VBAT) | 1.5 | 5.5 | V | |
| Operating Free-Air Temperature Range | -40 | 85 | °C | |
| Supply Current | 40 | µA | ||
| Battery-Supply Current | 100 | nA | ||
| Continuous Output Current at VOUT | 400 | mA | ||
| High-Level Output Voltage at RESET | VDD - 0.4 | V | ||
| Low-Level Output Voltage at RESET | 0.4 | V | ||
| Reset Delay Time | 100 | ms |
Key Features
- Precision Supply Voltage Monitor for 3.3 V and 5 V, with other options available on request.
- Backup-Battery Voltage can exceed VDD.
- Power On Reset Generator with a fixed 100-ms reset delay time.
- Voltage Monitor for power-fail or low-battery monitoring.
- Pin-for-pin compatible with MAX819, MAX703, and MAX704.
- 8-pin MSOP package (VSSOP DGK).
- Low supply current of 40 µA (max) and battery-supply current of 100 nA (max).
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 TPS3620-33DGKT?
The primary function is to monitor and control processor activity by providing backup-battery switchover for data retention of CMOS RAM.
- What are the supported supply voltages for the TPS3620-33DGKT?
The component supports supply voltages of 1.65 V to 5.5 V, with specific versions for 3.3 V and 5 V.
- What is the operating temperature range of the TPS3620-33DGKT?
The operating temperature range is from -40°C to +85°C.
- How much current does the TPS3620-33DGKT consume from the supply and battery?
The supply current is up to 40 µA, and the battery-supply current is up to 100 nA.
- What is the reset delay time of the TPS3620-33DGKT?
The reset delay time is fixed at 100 ms.
- Is the TPS3620-33DGKT compatible with other supervisory circuits?
Yes, it is pin-for-pin compatible with MAX819, MAX703, and MAX704.
- What package type and pin count does the TPS3620-33DGKT come in?
The component comes in an 8-pin MSOP package (VSSOP DGK).
- What are some common applications for the TPS3620-33DGKT?
Common applications include fax machines, set-top boxes, advanced voice mail systems, portable battery-powered equipment, and more.
- How does the TPS3620-33DGKT handle power-on reset?
The component asserts RESET when the supply voltage (VDD or VBAT) becomes higher than 1.1 V and keeps it active until VDD rises above the threshold voltage (VIT).
- What is the significance of the battery freshness seal in the TPS3619 and TPS3620 series?
The battery freshness seal is a feature in the TPS3619 series, indicating the battery's condition, but it is not mentioned specifically for the TPS3620 series.
