Overview
The TPL5110DDCT, produced by Texas Instruments, is a low-power system timer designed for power gating in duty-cycled or battery-powered applications. This nano-timer integrates a MOSFET driver and is optimized for reducing overall system standby current, making it ideal for energy harvesting and wireless sensor applications. The device operates with a supply voltage range of 1.8V to 5.5V and consumes a typical current of 35 nA at 2.5V, significantly extending battery life in power-cycled systems.
Key Specifications
| Parameter | Value | Unit |
|---|---|---|
| Supply Voltage | 1.8 to 5.5 | V |
| Current Consumption (typical at 2.5V) | 35 | nA |
| Selectable Time Intervals | 100 ms to 7200 s | |
| Timer Accuracy (typical) | 1% | |
| Package Type | SOT23 (6-pin) | |
| Package Size | 3.00 mm × 3.00 mm | |
| Junction-to-ambient thermal resistance | 163 | °C/W |
Key Features
- Low power consumption: Typical current of 35 nA at 2.5V.
- Selectable time intervals: From 100 ms to 7200 s using an external resistance.
- Manual MOSFET power ON: Can be triggered by momentarily pulling the DELAY/M_DRV pin to VDD.
- One-shot feature: The timer can be set to power the MOSFET for one cycle only.
- Integrated MOSFET driver: For power gating applications.
- Watchdog functionality: DONE pin for indicating successful processing by the microcontroller.
Applications
- Battery-powered systems: Extends battery life by reducing standby current.
- Internet of Things (IoT): Suitable for low-power IoT devices.
- Intruder detection and tamper detection: For security systems requiring periodic checks.
- Home automation sensors: For periodic sensing and reporting in home automation systems.
- Thermostats and consumer electronics: For power management in various consumer devices.
- Remote sensors: For periodic data collection in remote sensing applications.
- White goods: For power management in household appliances.
Q & A
- What is the typical current consumption of the TPL5110 at 2.5V?
The typical current consumption is 35 nA at 2.5V.
- What is the range of selectable time intervals for the TPL5110?
The time intervals range from 100 ms to 7200 s.
- How is the time interval set for the TPL5110?
The time interval is set using an external resistance between the DELAY/M_DRV pin and ground.
- What is the one-shot feature of the TPL5110?
The one-shot feature allows the timer to power the MOSFET for one cycle only when EN/ONE_SHOT is set to LOW.
- What is the purpose of the DONE pin on the TPL5110?
The DONE pin is used by the microcontroller to signal that it is working properly.
- How does the manual MOSFET power ON feature work?
The manual MOSFET power ON is triggered by momentarily pulling the DELAY/M_DRV pin to VDD.
- What is the package type and size of the TPL5110?
The TPL5110 is available in a 6-pin SOT23 package, measuring 3.00 mm × 3.00 mm.
- What are some common applications of the TPL5110?
Common applications include battery-powered systems, IoT devices, intruder detection, home automation sensors, thermostats, consumer electronics, remote sensors, and white goods.
- How does the TPL5110 reduce standby current in systems?
The TPL5110 reduces standby current by enabling the power supply line only when necessary, thus drastically reducing overall system standby current.
- What is the thermal resistance of the TPL5110 in the SOT23 package?
The junction-to-ambient thermal resistance is 163 °C/W.
