Overview
The TLV803, produced by Texas Instruments, is a part of the TLV8x3 family of supervisory circuits. These devices are designed to provide circuit initialization and timing supervision, primarily for DSPs and processor-based systems. The TLV803 is functionally equivalent to the TLV853 and TLV863, with the latter two offering alternate pinouts. The TLV803E is a newer, pin-to-pin alternative to all these devices.
During power-on, the RESET output asserts when the supply voltage (VDD) exceeds 1.1 V and remains active as long as VDD is below the threshold voltage (VIT). An internal timer ensures a fixed delay time of 200 ms before the output returns to its inactive state. This supervisory circuit is crucial for ensuring proper system reset and stability.
Key Specifications
| Parameter | Typical Value | Unit |
|---|---|---|
| Package | 3-Pin SOT-23 | |
| Body Size (Nom) | 2.92 mm × 1.30 mm | |
| Supply Current (VDD = 2 V, output unconnected) | 9 µA | µA |
| Supply Current (VDD = 6 V, output unconnected) | 20 µA | µA |
| Output Leakage Current (VDD = 6 V) | 350 nA | nA |
| Delay Time | 200 ms | ms |
| Temperature Range | –40°C to +125°C | °C |
| Supply Voltage Monitoring | 2.5 V, 3 V, 3.3 V, 5 V | V |
Key Features
- 3-Pin SOT-23 package
- Low supply current: 9 µA (typical)
- Precision supply voltage monitoring for 2.5 V, 3 V, 3.3 V, and 5 V
- Power-On Reset generator with a fixed delay time of 200 ms
- Pin-for-pin compatible with MAX803
- Open-drain, RESET output
- Operating temperature range: –40°C to +125°C
Applications
- Factory Automation
- Portable and Battery-Powered Equipment
- Set-Top Boxes
- Servers
- Appliances
- Electricity Meters
- Building Automation
Q & A
- What is the primary function of the TLV803?
The TLV803 provides circuit initialization and timing supervision, primarily for DSPs and processor-based systems.
- What is the package type of the TLV803?
The TLV803 is available in a 3-pin SOT-23 package.
- What are the typical supply current values for the TLV803?
The typical supply current is 9 µA at VDD = 2 V and 20 µA at VDD = 6 V.
- What is the delay time for the Power-On Reset generator?
The delay time for the Power-On Reset generator is 200 ms.
- Is the TLV803 compatible with other devices?
- What is the temperature range for the TLV803?
The TLV803 operates over a temperature range of –40°C to +125°C.
- What are the supported supply voltages for the TLV803?
The TLV803 supports supply voltages of 2.5 V, 3 V, 3.3 V, and 5 V.
- How does the RESET output behave during power-on?
The RESET output asserts when the supply voltage exceeds 1.1 V and remains active until the supply voltage exceeds the threshold voltage (VIT).
- Is there an evaluation module available for the TLV803?
- What are some common applications of the TLV803?
The TLV803 is used in factory automation, portable and battery-powered equipment, set-top boxes, servers, appliances, electricity meters, and building automation.
