Overview
The TPS70151PWPRG4 is a member of the TPS701xx family of low dropout (LDO) voltage regulators produced by Texas Instruments. This device is specifically designed to provide dual regulated output voltages, making it ideal for high-performance power management in Digital Signal Processor (DSP) and Field-Programmable Gate Array (FPGA) applications. The TPS70151PWPRG4 offers advanced features such as programmable power-up sequencing, fast transient response, and low quiescent current, ensuring reliable and efficient power supply solutions.
Key Specifications
| Parameter | Value | Unit |
|---|---|---|
| Input Voltage Range (VIN1, VIN2) | -0.3 to +7 | V |
| Output Voltage Range (VOUT1, VOUT2) | Up to 5.5 | V |
| Output Current Range (Regulator 1) | Up to 500 mA | A |
| Output Current Range (Regulator 2) | Up to 250 mA | A |
| Dropout Voltage (Typical) | 170 mV | mV |
| Quiescent Current (Typical) | 190 mA | mA |
| Junction Temperature Range | -40 to +150 | °C |
| Storage Temperature Range | -65 to +150 | °C |
| ESD Rating (HBM) | 2 kV | kV |
Key Features
- Programmable Power-Up Sequencing: Allows control over which output voltage (VOUT1 or VOUT2) is turned on first, enhancing system reliability and reducing component cost.
- Fast Transient Response: Ensures stable output voltages even during rapid changes in load current.
- Low Quiescent Current: The device maintains a low quiescent current of 190 mA (typical), independent of the output load.
- Integrated SVS and Power Good: Features include Power-On Reset (RESET) and Power Good (PG1) outputs to monitor and control system status.
- Manual Reset Inputs: MR1 and MR2 terminals allow for manual reset of the system.
- Enable Function: The EN terminal can put the device into sleep mode, reducing input currents to less than 3 mA.
- Ultra-Low Dropout Voltage: Typically 170 mV on Regulator 1, ensuring efficient power delivery.
Applications
The TPS70151PWPRG4 is particularly suited for high-performance power management in various applications, including:
- Digital Signal Processor (DSP) systems
- Field-Programmable Gate Array (FPGA) systems
- Other digital applications requiring dual output voltages and power sequencing
Q & A
- What is the primary application of the TPS70151PWPRG4?
The TPS70151PWPRG4 is primarily designed for high-performance power management in Digital Signal Processor (DSP) and Field-Programmable Gate Array (FPGA) applications.
- What is the output current range for Regulator 1 and Regulator 2?
Regulator 1 can provide up to 500 mA, while Regulator 2 can provide up to 250 mA.
- What is the typical dropout voltage for Regulator 1?
The typical dropout voltage for Regulator 1 is 170 mV.
- How does the programmable power-up sequencing work?
The SEQ terminal allows control over which output voltage (VOUT1 or VOUT2) is turned on first, enhancing system reliability and reducing component cost.
- What is the function of the EN terminal?
The EN terminal can enable or disable the device. When EN is high, the device is in shutdown mode; when EN is low, the device is enabled.
- What are the manual reset inputs used for?
The MR1 and MR2 terminals are used to trigger a reset condition in the system by pulling them to a logic low state.
- What is the purpose of the Power Good (PG1) output?
The PG1 output indicates the status of the VOUT1 regulator, going to a high impedance state when VOUT1 reaches 95% of its regulated voltage.
- How does the Power-On Reset (RESET) function work?
The RESET output initiates a reset in DSP systems when VOUT2 falls below 95% of its regulated voltage or when manual reset pins (MR1 or MR2) are pulled low.
- What is the quiescent current of the TPS70151PWPRG4?
The typical quiescent current is 190 mA, which remains virtually constant over the full load range.
- What are the junction and storage temperature ranges for the TPS70151PWPRG4?
The junction temperature range is -40 to +150°C, and the storage temperature range is -65 to +150°C.
