Overview
The TPS70158PWPR, produced by Texas Instruments, is a dual-output low-dropout (LDO) voltage regulator designed primarily for digital signal processing (DSP) and field-programmable gate array (FPGA) applications. This device is part of the TPS701xx family, which offers advanced features such as selectable power-up sequencing, fast transient response, and ultra-low quiescent current. The TPS70158PWPR is particularly suited for systems requiring dual voltage regulation with precise control over power sequencing.
Key Specifications
| Parameter | Value | Unit |
|---|---|---|
| Input Voltage Range (VIN1, VIN2) | -0.3 to +7 | V |
| Output Voltage Options | 3.3V/2.5V | V |
| Output Current Range (Regulator 1) | Up to 500mA | A |
| Output Current Range (Regulator 2) | Up to 250mA | A |
| Dropout Voltage (Typical, Regulator 1) | 170mV | mV |
| Quiescent Current (Typical) | 190mA | mA |
| Power-Up Sequence Control | Selectable via SEQ terminal | |
| Power-On Reset (POR) Delay | 120ms | ms |
| Operating Temperature Range | -40°C to +125°C | °C |
| Package Type | HTSSOP-20 (PWP) |
Key Features
- Selectable Power-Up Sequencing: The device allows for programmable power-up sequencing via the SEQ terminal, enabling either VOUT1 or VOUT2 to power up first.
- Fast Transient Response: The TPS70158PWPR features a fast transient response, ensuring stable output voltages during load changes.
- Low Dropout Voltage: The device has a very low dropout voltage, typically 170mV on Regulator 1, which is directly proportional to the output current.
- Ultra-Low Quiescent Current: The quiescent current is very low and remains constant over the full load range, with a typical value of 190mA.
- Power-On Reset (POR) and Power Good (PG1) Signals: The device includes an open-drain POR signal and a PG1 signal to indicate the status of the output voltages.
- Manual Reset Inputs: The MR1 and MR2 terminals allow for manual reset of the system.
- Enable Function: The EN terminal enables or shuts down the device, allowing for power management.
Applications
The TPS70158PWPR is designed for use in various digital applications, including:
- Digital Signal Processing (DSP): Ideal for TMS320 DSP applications with power sequencing requirements.
- Field-Programmable Gate Arrays (FPGA): Suitable for FPGA applications requiring dual voltage regulation and power sequencing.
- Embedded Systems: Used in embedded systems that require precise voltage regulation and power management.
- Industrial and Automotive Systems: Applicable in industrial and automotive systems where reliable and stable voltage regulation is crucial.
Q & A
- What is the primary application of the TPS70158PWPR?
The TPS70158PWPR is primarily designed for digital signal processing (DSP) and field-programmable gate array (FPGA) applications.
- What are the output voltage options for the TPS70158PWPR?
The device offers output voltage options of 3.3V/2.5V.
- What is the typical dropout voltage for Regulator 1?
The typical dropout voltage for Regulator 1 is 170mV.
- How does the power-up sequencing work?
The power-up sequencing is selectable via the SEQ terminal, allowing either VOUT1 or VOUT2 to power up first.
- What is the quiescent current of the TPS70158PWPR?
The typical quiescent current is 190mA.
- What is the purpose of the POR and PG1 signals?
The POR signal indicates a power-on reset condition, and the PG1 signal indicates the status of the VOUT1 regulator.
- How do the manual reset inputs (MR1 and MR2) function?
The MR1 and MR2 terminals are active low inputs used to trigger a reset condition when pulled to logic low.
- What is the operating temperature range of the TPS70158PWPR?
The operating temperature range is -40°C to +125°C.
- What package type is the TPS70158PWPR available in?
The device is available in the HTSSOP-20 (PWP) package.
- How does the enable function work?
The EN terminal enables or shuts down the device; a high signal on EN puts the device in shutdown mode, while a low signal enables it.
