Overview
The TPS70151PWPR is a dual-channel low-dropout voltage regulator produced by Texas Instruments. This device is part of the TPS701xx family, designed to provide a complete power management solution for various applications, including DSP (Digital Signal Processing), processor power, ASIC, FPGA, and other digital systems. It features dual output voltages with power-up sequence control, making it ideal for applications requiring precise power sequencing.
The TPS70151PWPR is packaged in a 20-pin HTSSOP (PowerPAD TSSOP) and operates over a temperature range of -40°C to 125°C. It offers fixed and adjustable voltage options, with Regulator 1 capable of delivering up to 500mA and Regulator 2 up to 250mA. The device is known for its fast transient response, low noise output, and ultra-low quiescent current, making it a reliable choice for high-performance power management needs.
Key Specifications
| Parameter | Value |
|---|---|
| Package | 20-Pin HTSSOP (PowerPAD TSSOP) |
| Operating Temperature Range | -40°C to 125°C |
| Number of Regulators | 2 |
| Output Configuration | Positive |
| Output Type | Fixed and Adjustable |
| Output Current Range | Regulator 1: 500mA, Regulator 2: 250mA |
| Voltage Options | 3.3V/2.5V, 3.3V/1.8V, 3.3V/1.5V, 3.3V/1.2V |
| Quiescent Current | 190µA (typical) |
| Input Current During Standby | 1µA |
| Noise | 65µV RMS without bypass capacitor |
| Power Supply Rejection Ratio (PSRR) | 60dB at 1kHz |
| Voltage Dropout (Max) | 0.28V @ 500mA |
| Protection Features | Over Current, Over Temperature, Reverse Polarity, Under Voltage Lockout (UVLO) |
Key Features
- Dual Output Voltages for Split-Supply Applications
- Selectable Power-Up Sequencing for DSP Applications
- Fast Transient Response
- Ultra Low 190µA (typical) Quiescent Current
- 1µA Input Current During Standby
- Low Noise: 65µV RMS without bypass capacitor
- Quick Output Capacitor Discharge Feature
- Two Manual Reset Inputs
- 2% Accuracy Over Load and Temperature
- Undervoltage Lockout (UVLO) Feature
- Thermal Shutdown Protection
- Open Drain Power-On Reset with 120ms Delay
- Open Drain Power Good for Regulator 1
Applications
The TPS70151PWPR is designed primarily for DSP (Digital Signal Processing) applications, as well as for powering processors, ASICs, FPGAs, and other digital systems. Its features make it suitable for any application requiring dual output voltage regulators with precise power sequencing.
Key application areas include:
- DSP Systems
- Processor Power Management
- ASIC and FPGA Power Management
- Digital Signal Processing Systems
Q & A
- What is the package type of the TPS70151PWPR?
The TPS70151PWPR is packaged in a 20-pin HTSSOP (PowerPAD TSSOP).
- What are the operating temperature ranges for the TPS70151PWPR?
The operating temperature range is -40°C to 125°C.
- How many regulators does the TPS70151PWPR have?
The device has two regulators.
- What are the output current ranges for each regulator?
Regulator 1 can support up to 500mA, and Regulator 2 can support up to 250mA.
- What voltage options are available for the TPS70151PWPR?
Voltage options include 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 TPS70151PWPR?
The quiescent current is 190µA (typical).
- Does the TPS70151PWPR have power sequencing capabilities?
Yes, it has selectable power-up sequencing for DSP applications.
- What protection features does the TPS70151PWPR include?
The device includes over current, over temperature, reverse polarity, and under voltage lockout (UVLO) protection features.
- How does the Power-On Reset (POR) function work?
The POR output initiates a reset in DSP systems and related digital applications in the event of an undervoltage condition, with a 120ms delay.
- What is the purpose of the Power Good (PG1) pin?
The PG1 pin is an open drain output that indicates the status of the VOUT1 regulator, going to a high impedance state when VOUT1 reaches 95% of its regulated voltage.
