Overview
The TPS3619-33DGKG4 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 for data retention in CMOS RAM. The TPS3619-33DGKG4 is specifically tailored for systems requiring a nominal supply voltage of 3.3 V and is available in an 8-pin MSOP package.
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 |
Key Features
- Precision Supply Voltage Monitor: Monitors supply voltage with precise threshold voltages (e.g., 3.3 V and 5 V) to ensure proper system operation.
- Backup-Battery Switchover: Provides backup-battery switchover for data retention in CMOS RAM, ensuring data integrity during power failures.
- Power On Reset Generator: Includes a fixed 100-ms reset delay time to ensure proper system reset during power-on sequences.
- Voltage Monitor for Power-Fail or Low-Battery Monitoring: Monitors the power-fail comparator input (PFI) to detect low battery or power failure conditions.
- Pin-For-Pin Compatibility: Compatible with MAX819, MAX703, and MAX704, making it a versatile option for various system designs.
- Ultra-Low Power Consumption: Typical battery-supply current of 100 nA, making it suitable for battery-powered devices.
- Temperature Range: Operates over a temperature range of -40°C to +85°C, making it suitable for a wide range of applications.
- 8-Pin MSOP Package: Compact package design for space-efficient system integration.
Applications
- Fax Machines: Ensures reliable operation and data retention during power cycles.
- Set-Top Boxes: Provides robust power management for digital TV and multimedia systems.
- Advanced Voice Mail Systems: Supports reliable operation in communication systems.
- Portable Battery-Powered Equipment: Ideal for devices requiring low power consumption and reliable power management.
- Computer Equipment: Used in various computer peripherals and mainboards for power monitoring and reset functions.
- Advanced Modems: Ensures stable operation in telecommunications equipment.
- Automotive Systems: Suitable for use in automotive electronics due to its wide temperature range and robust design.
- Portable Long-Time Monitoring Equipment: Used in devices that require continuous monitoring over extended periods.
- Point-of-Sale Equipment: Provides reliable power management for retail and payment systems.
Q & A
- What is the primary function of the TPS3619-33DGKG4?
The primary function is to monitor and control processor activity by providing precision supply voltage monitoring and backup-battery switchover for data retention in CMOS RAM.
- What are the nominal supply voltages available for the TPS3619 and TPS3620 families?
The nominal supply voltages are 3.3 V and 5 V.
- What is the typical battery-supply current of the TPS3619-33DGKG4?
The typical battery-supply current is 100 nA.
- What is the operating free-air temperature range of the TPS3619-33DGKG4?
The operating free-air temperature range is -40°C to +85°C.
- What package type is the TPS3619-33DGKG4 available in?
The component is available in an 8-pin MSOP package.
- Is the TPS3619-33DGKG4 pin-for-pin compatible with other devices?
Yes, it is pin-for-pin compatible with MAX819, MAX703, and MAX704.
- What is the purpose of the power-fail comparator input (PFI) in the TPS3619-33DGKG4?
The PFI is used to detect low battery or power failure conditions.
- How long is the fixed reset delay time during power-on sequences?
The fixed reset delay time is 100 ms.
- What are some common applications of the TPS3619-33DGKG4?
Common applications include fax machines, set-top boxes, advanced voice mail systems, portable battery-powered equipment, computer equipment, advanced modems, automotive systems, and point-of-sale equipment.
- How does the TPS3619-33DGKG4 handle power-on reset?
During power on, the RESET is asserted when the supply voltage (VDD or VBAT) becomes higher than 1.1 V, and an internal timer delays the return of the output to the inactive state to ensure proper system reset.
