Overview
The TPL5010DDCT, produced by Texas Instruments, is an ultra-low power system timer with a watchdog feature. It is designed for duty-cycled, battery-powered applications, particularly in the Internet of Things (IoT) and other low-power systems. This timer enables significant power savings by allowing the microcontroller (μC) to remain in a low-power mode, waking up only at specified intervals. The TPL5010 consumes only 35 nA, making it an ideal replacement for the internal timer of a μC, thereby reducing overall system current consumption by almost two orders of magnitude.
Key Specifications
| Parameter | Min | Max | Unit | |
|---|---|---|---|---|
| Supply Voltage (VDD-GND) | 1.8 | 5.5 | V | |
| Operating Temperature | -40 | 105 | °C | |
| Supply Current (IDD) | 35 | 50 | nA | |
| Time Interval Period (tIP) | 100 ms | 7200 s | ||
| Time Interval Setting Accuracy | ±0.6% | |||
| Junction-to-Ambient Thermal Resistance (RθJA) | 163 | °C/W | ||
| ESD Ratings (Human Body Model) | ±1000 | V | ||
| ESD Ratings (Charged-Device Model) | ±250 | V |
Key Features
- Ultra-Low Power Consumption: The TPL5010 consumes only 35 nA, making it highly suitable for battery-powered applications.
- Watchdog Function: The device includes a watchdog feature that ensures the system remains operational by resetting the microcontroller if it fails to respond within a specified time interval.
- Selectable Timing Intervals: The timer offers selectable timing intervals from 100 ms to 7200 s, configurable through an external resistance.
- Manual Reset: A manual reset function is available by momentarily pulling the DELAY/M_RST pin to VDD.
- Low Frequency Oscillator: The device features a low frequency oscillator with high accuracy over supply voltage and temperature.
- Compact Package: Available in a 6-pin SOT23 package, making it suitable for space-constrained designs.
Applications
- Tamper Detection: Used in security systems to detect unauthorized access.
- Home Automation Sensors: Ideal for low-power sensors in home automation systems.
- Thermostats: Suitable for thermostat applications where low power consumption is critical.
- Consumer Electronics: Used in various consumer electronics requiring low power timers.
- Remote Sensors: Perfect for remote sensing applications in IoT devices.
- White Goods: Can be used in white goods to manage power consumption efficiently.
Q & A
- What is the primary function of the TPL5010?
The TPL5010 is an ultra-low power system timer with a watchdog feature designed for duty-cycled, battery-powered applications.
- How much power does the TPL5010 consume?
The TPL5010 consumes only 35 nA.
- What is the range of selectable timing intervals for the TPL5010?
The timing intervals range from 100 ms to 7200 s.
- How is the time interval configured on the TPL5010?
The time interval is configured through an external resistance (REXT) connected between the DELAY/M_RST pin and ground.
- What is the purpose of the watchdog function in the TPL5010?
The watchdog function ensures the system remains operational by resetting the microcontroller if it fails to respond within a specified time interval.
- How is a manual reset performed on the TPL5010?
A manual reset is performed by momentarily pulling the DELAY/M_RST pin to VDD for at least 20 ms.
- What is the recommended package type for the TPL5010?
The TPL5010 is available in a 6-pin SOT23 package.
- What are the operating temperature limits for the TPL5010?
The operating temperature range is from -40°C to 105°C.
- What are some common applications of the TPL5010?
Common applications include tamper detection, home automation sensors, thermostats, consumer electronics, remote sensors, and white goods.
- How does the TPL5010 contribute to power savings in a system?
The TPL5010 allows the microcontroller to be placed in a much lower power mode, reducing overall system current consumption by almost two orders of magnitude.
