Overview
The TPL5111DDCR, produced by Texas Instruments, is a low-power system timer designed for power gating in duty-cycled or battery-powered applications. This nano-power timer consumes only 35 nA, making it highly efficient for reducing the overall system standby current during sleep time. This significant power saving enables the use of smaller batteries, which is particularly beneficial for energy harvesting and wireless sensor applications. The TPL5111 is available in a 6-pin SOT-23 package and supports a wide supply voltage range from 1.8 V to 5.5 V.
Key Specifications
| Parameter | Min | Typ | 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% | |||
| Oscillator Accuracy over Temperature | ±100 ppm/°C | ±400 ppm/°C | ||
| Junction-to-ambient thermal resistance (RθJA) | 163 | °C/W |
Key Features
- Low Power Consumption: Consumes only 35 nA, ideal for battery-powered and duty-cycled applications.
- Selectable Time Intervals: Time intervals can be set from 100 ms to 7200 s using an external resistor.
- Manual Power-On Input: Allows for manual power-on by momentarily pulling the DELAY/M_DRV pin to VDD.
- One-Shot Feature: The timer can operate in one-shot mode where the DRVn signal is asserted only once at power-on.
- Watchdog Functionality: The DONE pin allows a microcontroller to signal successful processing, adjusting the DRVn signal accordingly.
- Compact Package: Available in a 6-pin SOT-23 package.
Applications
- Duty Cycle Control of Battery-Powered Systems: Ideal for managing power in battery-powered devices.
- Internet of Things (IoT): Suitable for IoT devices that require low power consumption.
- Intruder Detection and Tamper Detection: Used in security systems to manage power efficiently.
- Home Automation Sensors and Thermostats: Enhances power management in home automation devices.
- Consumer Electronics and Remote Sensors: Applicable in various consumer electronics and remote sensing applications.
- White Goods: Can be used in household appliances to optimize power usage.
Q & A
- What is the typical current consumption of the TPL5111?
The TPL5111 typically consumes 35 nA of current.
- What is the range of supply voltage for the TPL5111?
The supply voltage range for the TPL5111 is from 1.8 V to 5.5 V.
- How are the time intervals set for the TPL5111?
The time intervals are set using an external resistor connected to the DELAY/M_DRV pin.
- What is the one-shot feature of the TPL5111?
The one-shot feature allows the DRVn signal to be asserted only once at power-on when the EN/ONE_SHOT pin is set to LOW.
- How does the manual power-on function work?
The manual power-on function is realized by momentarily pulling the DELAY/M_DRV pin to VDD, which triggers a power-on signal.
- What is the purpose of the DONE pin?
The DONE pin is driven by a microcontroller to signal that the microcontroller is working properly, adjusting the DRVn signal accordingly.
- What is the thermal resistance of the TPL5111 in the SOT-23 package?
The junction-to-ambient thermal resistance (RθJA) is 163 °C/W.
- In what package is the TPL5111 available?
The TPL5111 is available in a 6-pin SOT-23 package.
- What are some common applications of the TPL5111?
Common applications include duty cycle control of battery-powered systems, IoT devices, intruder detection, tamper detection, home automation sensors, thermostats, consumer electronics, remote sensors, and white goods.
- How accurate is the time interval setting of the TPL5111?
The time interval setting accuracy is ±0.6% excluding the precision of the external resistor.
