Overview
The TPS70918DBVR, produced by Texas Instruments, is part of the TPS709 series of linear voltage regulators. These devices are designed for power-sensitive applications and are characterized by their ultra-low quiescent current of 1 μA. This makes them ideal for battery-powered systems that require minimal idle-state power dissipation. The TPS709 series features a precision band-gap and error amplifier, providing 2% accuracy over temperature. Additionally, these regulators include thermal shutdown, current limit, and reverse current protection for enhanced reliability and safety.
Key Specifications
| Parameter | Min | Typ | Max | Unit |
|---|---|---|---|---|
| Input Voltage Range (VIN) | 2.7 | 30 | V | |
| Output Voltage Range (VOUT) | 1.2 | 6.5 | V | |
| Output Current (IOUT) | 150 | 200 (peak) | mA | |
| Quiescent Current (IQ) | 1 | μA | ||
| Shutdown Current (ISHUTDOWN) | 150 | nA | ||
| Power-Supply Rejection Ratio (PSRR) at 1 kHz | 52 | dB | ||
| Output Noise Voltage (Vn) | 190 | μVRMS | ||
| Thermal Shutdown Temperature | 158 | °C | ||
| Operating Junction Temperature (TJ) | -55 | 150 | °C | |
| Storage Temperature (Tstg) | -55 | 150 | °C |
Key Features
- Ultra-low quiescent current of 1 μA
- Reverse current protection
- Low shutdown current of 150 nA
- 2% accuracy over temperature
- Available in fixed-output voltages from 1.2 V to 6.5 V
- Thermal shutdown and overcurrent protection
- Supports 200-mA peak output current
- Packages: SOT-23-5, WSON-6
Applications
- Smoke and heat detectors
- Thermostats
- Motion detectors (PIR, uWave, etc.)
- Cordless power tools
- Appliance battery packs
- Electricity meters
- Water meters
Q & A
- What is the quiescent current of the TPS70918DBVR?
The quiescent current is 1 μA. - What is the input voltage range for the TPS70918DBVR?
The input voltage range is from 2.7 V to 30 V. - What is the maximum output current of the TPS70918DBVR?
The maximum output current is internally limited, but it supports up to 200 mA peak. - Does the TPS70918DBVR have thermal protection?
Yes, it features thermal shutdown and overcurrent protection. - What are the available output voltages for the TPS709 series?
The TPS709 series is available in fixed-output voltages from 1.2 V to 6.5 V. - How do I enable the TPS70918DBVR?
The device can be enabled by driving the enable pin (EN) high above 0.9 V, or it can be left floating to enable the device. - What is the shutdown current of the TPS70918DBVR?
The shutdown current is 150 nA. - What are the typical applications of the TPS70918DBVR?
Typical applications include smoke and heat detectors, thermostats, motion detectors, cordless power tools, appliance battery packs, electricity meters, and water meters. - What is the power-supply rejection ratio (PSRR) of the TPS70918DBVR at 1 kHz?
The PSRR at 1 kHz is 52 dB. - What is the thermal shutdown temperature of the TPS70918DBVR?
The thermal shutdown temperature is 158°C.
