Overview
The TPS3620-33DGKR is a backup-battery supervisor integrated circuit designed by Texas Instruments. This device is part of the TPS3620 family, which is used to monitor and control processor activity, ensuring reliable operation in systems that require battery backup for RAM retention. The TPS3620-33DGKR is specifically configured for a nominal supply voltage of 3.3V and is available in an 8-pin MSOP package.
This component is characterized for operation over a temperature range of –40°C to +85°C, making it suitable for a wide range of applications, including computer equipment, advanced modems, automotive systems, and portable battery-powered devices.
Key Specifications
| Parameter | Min | Max | Unit | |
|---|---|---|---|---|
| Supply Voltage (VDD) | 1.65 | - | 5.5 | V |
| Battery Supply Voltage (VBAT) | 1.5 | - | 5.5 | V |
| Continuous Output Current at VOUT | - | - | 400 | mA |
| Operating Free-Air Temperature Range | -40 | - | 85 | °C |
| Supply Current | - | - | 40 | µA |
| Battery-Supply Current | - | - | 100 | nA |
| High-Level Output Voltage at RESET | VDD - 0.4 | - | - | V |
| Low-Level Output Voltage at RESET | 0.4 | - | - | V |
| VDD to VOUT On-Resistance | 0.6 | - | 1 | Ω |
| VBAT to VOUT On-Resistance | 8 | - | 15 | Ω |
Key Features
- Precision supply voltage monitoring for 3.3V and 5V systems.
- Low supply current of 40 µA (max) and battery-supply current of 100 nA (max).
- Automatic switchover between the main power supply and the backup battery.
- Manual reset input (MR) and power-fail input (PFI) and output (PFO).
- High-level and low-level output voltage specifications to ensure reliable reset signals.
- Operating temperature range of –40°C to +85°C.
- Available in an 8-pin MSOP package.
Applications
- Computer equipment.
- Advanced modems.
- Automotive systems.
- Portable battery-powered equipment.
- Fax machines.
- Set-top boxes.
- Advanced voice mail systems.
- Point-of-sale equipment.
- Portable long-time monitoring equipment.
Q & A
- What is the primary function of the TPS3620-33DGKR?
The primary function of the TPS3620-33DGKR is to monitor and control processor activity by supervising the supply voltage and automatically switching between the main power supply and a backup battery to ensure RAM retention.
- What is the nominal supply voltage for the TPS3620-33DGKR?
The nominal supply voltage for the TPS3620-33DGKR is 3.3V.
- What is the maximum supply current of the TPS3620-33DGKR?
The maximum supply current of the TPS3620-33DGKR is 40 µA.
- What is the maximum battery-supply current of the TPS3620-33DGKR?
The maximum battery-supply current of the TPS3620-33DGKR is 100 nA.
- What is the operating temperature range of the TPS3620-33DGKR?
The operating temperature range of the TPS3620-33DGKR is –40°C to +85°C.
- What package type is the TPS3620-33DGKR available in?
The TPS3620-33DGKR is available in an 8-pin MSOP package.
- What are the key inputs and outputs of the TPS3620-33DGKR?
The key inputs include the manual reset (MR) and power-fail input (PFI), while the key outputs include the power-fail output (PFO) and the reset output.
- How does the TPS3620-33DGKR handle power switchover?
The TPS3620-33DGKR automatically switches between the main power supply and the backup battery when the main supply voltage falls below a certain threshold.
- What are some typical applications of the TPS3620-33DGKR?
Typical applications include computer equipment, advanced modems, automotive systems, and portable battery-powered equipment.
- What precautions should be taken when handling the TPS3620-33DGKR?
The TPS3620-33DGKR should be handled with appropriate precautions to prevent ESD damage, and proper handling and installation procedures should be followed.
- Where can I find detailed specifications and package information for the TPS3620-33DGKR?
Detailed specifications and package information can be found in the datasheet available on the Texas Instruments website.
