Overview
The TPS73725DCQRG4 is a 1A low-dropout (LDO) voltage regulator produced by Texas Instruments. This device utilizes an advanced BiCMOS process, ensuring high precision and very low dropout voltages. It features an NMOS pass transistor in a voltage-follower configuration, which makes it relatively insensitive to the output capacitor value and ESR, allowing for a wide variety of load configurations. The TPS73725DCQRG4 is designed for portable applications, offering low ground pin current and an enable input for power management. It also includes thermal shutdown and foldback current limit for enhanced protection.
Key Specifications
| Parameter | Minimum | Typical | Maximum | Unit |
|---|---|---|---|---|
| VIN Input Voltage Range | 2.2 | - | 5.5 | V |
| IOUT Output Current | 0 | - | 1 | A |
| TJ Operating Junction Temperature | -40 | - | 125 | °C |
| VOUT Output Voltage Range (TPS73725) | - | 2.5 | - | V |
| VDO Dropout Voltage | - | - | 0.5 | V |
| IGND Ground Pin Current (IOUT = 1A) | - | 880 | 1300 | µA |
| PSRR Power-Supply Rejection Ratio (f = 100Hz, IOUT = 1A) | - | 58 | - | dB |
| TSD Thermal Shutdown Temperature | - | 160 | - | °C |
Key Features
- Low Dropout Voltage: The TPS73725DCQRG4 features very low dropout voltages, making it suitable for applications where input voltage is close to the output voltage.
- NMOS Pass Transistor: Uses an NMOS pass transistor in a voltage-follower configuration, which is relatively insensitive to the output capacitor value and ESR.
- High Precision: Utilizes an advanced BiCMOS process to yield high precision and low ground pin current.
- Enable Input: Includes an enable input for easy power management, with a current consumption of less than 20nA when not enabled.
- Thermal and Overcurrent Protection: Features thermal shutdown and foldback current limit for enhanced protection against overheating and overcurrent conditions.
- Adjustable and Fixed Output Voltages: Available in both adjustable and fixed output voltage versions, offering flexibility in design.
Applications
The TPS73725DCQRG4 is designed for use in various applications, particularly in portable and battery-powered devices where low power consumption and high efficiency are crucial. Some common applications include:
- Portable electronics such as smartphones, tablets, and laptops.
- Battery-powered devices, including wireless sensors and IoT devices.
- Automotive systems requiring low dropout and high precision voltage regulation.
- Industrial control systems and medical devices where reliability and precision are essential.
Q & A
- What is the maximum output current of the TPS73725DCQRG4?
The maximum output current is 1A.
- What is the input voltage range for the TPS73725DCQRG4?
The input voltage range is from 2.2V to 5.5V.
- What type of pass transistor does the TPS73725DCQRG4 use?
The TPS73725DCQRG4 uses an NMOS pass transistor.
- Does the TPS73725DCQRG4 have thermal protection?
- What is the typical ground pin current when the output current is 1A?
The typical ground pin current is 880µA for new silicon and 1300µA for legacy silicon.
- Can the output voltage of the TPS73725DCQRG4 be adjusted?
- What is the power-supply rejection ratio (PSRR) at 100Hz and 1A output current?
The PSRR is 58dB.
- What is the thermal shutdown temperature of the TPS73725DCQRG4?
The thermal shutdown temperature is 160°C.
- How much current does the enable pin consume when the regulator is enabled?
The enable pin current is 20nA when the regulator is enabled.
- What is the typical startup time for the TPS73725DCQRG4?
The typical startup time is 431µs for new silicon and 600µs for legacy silicon.
