Overview
The TPS70148PWPRG4, part of the TPS701xx family, is a dual-output low dropout voltage regulator designed by Texas Instruments. This device is specifically tailored for power management in split-voltage applications, particularly for Digital Signal Processors (DSPs), Application-Specific Integrated Circuits (ASICs), Field-Programmable Gate Arrays (FPGAs), and other digital systems. It offers a comprehensive power solution with features such as selectable power-up sequencing, fast transient response, and high accuracy.
Key Specifications
| Parameter | Value | Unit |
|---|---|---|
| Input Voltage Range (VIN1, VIN2) | -0.3 to +7 | V |
| Output Voltage Range (VOUT1, VSENSE1) | 5.5 | V |
| Output Voltage Range (VOUT2, VSENSE2) | 5.5 | V |
| Output Current (Regulator 1) | 500 mA | mA |
| Output Current (Regulator 2) | 250 mA | mA |
| Quiescent Current | 190 mA (typ) | mA |
| Junction Temperature Range | -40 to +150 | °C |
| Storage Temperature Range | -65 to +150 | °C |
| ESD Rating (HBM) | 2 kV | kV |
| Package Type | HTSSOP-20 (PWP) | |
| Power-Up Sequencing | Selectable | |
| RESET Pulse Duration | 80-120 ms | ms |
Key Features
- Dual regulated output voltages for split-supply applications.
- Selectable power-up sequencing for DSP applications.
- Fast transient response and high accuracy with small output capacitors.
- Ultra-low quiescent current of 190 mA (typ).
- Open drain power-on reset (RESET) with 120ms delay.
- Open drain power good (PG1) indicator for Regulator 1.
- Manual reset inputs (MR1 and MR2) with internal pull-up.
- Voltage options: 3.3V/2.5V, 3.3V/1.8V, 3.3V/1.5V, 3.3V/1.2V, and dual adjustable outputs.
- Enable feature for sleep mode, reducing input currents to less than 3mA.
Applications
The TPS70148PWPRG4 is designed for high-performance power management in various digital systems, including:
- Digital Signal Processors (DSPs) like the TMS320 family.
- Application-Specific Integrated Circuits (ASICs).
- Field-Programmable Gate Arrays (FPGAs).
- Other digital applications requiring dual output voltage regulators.
Q & A
- What is the primary application of the TPS70148PWPRG4?
The TPS70148PWPRG4 is primarily designed for power management in Digital Signal Processors (DSPs), ASICs, FPGAs, and other digital systems requiring dual output voltage regulators.
- What are the output voltage options for the TPS70148PWPRG4?
The device offers fixed output voltage options such as 3.3V/2.5V, 3.3V/1.8V, 3.3V/1.5V, and 3.3V/1.2V, as well as dual adjustable outputs.
- What is the quiescent current of the TPS70148PWPRG4?
The quiescent current is typically 190 mA.
- How does the power-up sequencing work on the TPS70148PWPRG4?
The power-up sequencing is selectable, allowing either VOUT1 or VOUT2 to power up first based on the state of the SEQ terminal.
- What is the purpose of the RESET and PG1 terminals?
The RESET terminal provides a power-on reset signal, and the PG1 terminal indicates the status of the VOUT1 regulator.
- What is the junction temperature range for the TPS70148PWPRG4?
The junction temperature range is -40°C to +150°C.
- What is the package type of the TPS70148PWPRG4?
The device is packaged in an HTSSOP-20 (PWP) package.
- How does the enable feature work on the TPS70148PWPRG4?
The enable feature puts the device in sleep mode, reducing the input currents to less than 3mA.
- What are the manual reset inputs used for?
The manual reset inputs (MR1 and MR2) are used to trigger a reset condition when pulled to logic low.
- What is the ESD rating of the TPS70148PWPRG4?
The ESD rating is 2 kV (HBM).
