Overview
The TPS76818QD is a 1-A, 10-V, low-dropout voltage regulator produced by Texas Instruments. This device is part of the TPS768 family, designed to offer high performance with a fast transient response and stability with 10 µF capacitors. It is particularly suited for applications requiring low dropout voltage and ultralow quiescent current, making it ideal for battery-powered systems. The regulator is available in an 8-pin SOIC (D) package and operates over a temperature range of -40°C to 125°C.
Key Specifications
| Specification | Value |
|---|---|
| Input Voltage Range | 2.7 V to 10 V |
| Output Voltage | 1.8 V (fixed) |
| Output Current | Up to 1 A |
| Dropout Voltage | Typically 230 mV at 1 A |
| Quiescent Current | Typically 85 µA |
| Operating Temperature Range | -40°C to 125°C |
| Package Type | SOIC-8 (D) |
| Number of Pins | 8 |
| Voltage Tolerance | 2% over specified conditions |
| Thermal Shutdown Junction Temperature | 150°C |
| Power Good (PG) Output | Active high |
Key Features
- Low-Dropout Voltage: Typically 230 mV at 1 A output current.
- Ultralow Quiescent Current: Typically 85 µA, independent of output loading.
- Fast Transient Response: Stable with 10 µF capacitors.
- Thermal Shutdown Protection: Junction temperature of 150°C.
- Open Drain Power Good (PG) Output: Can be used for power-on reset or low-battery indicator.
- Enable Input: Allows shutdown with a TTL high signal, reducing quiescent current to less than 1 µA.
- Available in Fixed and Adjustable Output Versions: Fixed outputs include 1.5 V, 1.8 V, 2.5 V, 2.7 V, 2.8 V, 3.0 V, 3.3 V, and 5.0 V; adjustable from 1.2 V to 5.5 V.
Applications
- Battery-Powered Systems: The low quiescent current and low dropout voltage make it ideal for extending battery life.
- Portable Electronics: Suitable for devices requiring stable voltage regulation with minimal power consumption.
- Industrial Control Systems: Can be used in systems requiring reliable voltage regulation and thermal protection.
- Automotive Systems: Applicable in automotive electronics where stable voltage and low power consumption are critical.
Q & A
- What is the input voltage range of the TPS76818QD?
The input voltage range is from 2.7 V to 10 V.
- What is the typical dropout voltage of the TPS76818QD at 1 A output current?
The typical dropout voltage is 230 mV at 1 A output current.
- What is the quiescent current of the TPS76818QD?
The quiescent current is typically 85 µA.
- What is the operating temperature range of the TPS76818QD?
The operating temperature range is from -40°C to 125°C.
- What is the purpose of the Power Good (PG) output?
The Power Good (PG) output is an active high signal that can be used to implement a power-on reset or a low-battery indicator.
- How does the enable input function on the TPS76818QD?
The enable input allows the regulator to be shut down with a TTL high signal, reducing the quiescent current to less than 1 µA.
- What types of packages are available for the TPS768 family?
The TPS768 family is available in SOIC-8 (D) and TSSOP-20 (PWP) packages.
- What is the thermal shutdown junction temperature of the TPS76818QD?
The thermal shutdown junction temperature is 150°C.
- Is the TPS76818QD RoHS and REACH compliant?
- What is the typical output noise voltage of the TPS76818QD?
The typical output noise voltage is 55 µVrms at 1 A output current and 25°C.
