Overview
The TPS70351PWPR, produced by Texas Instruments, is a dual-output low dropout (LDO) voltage regulator designed to provide a complete power management solution for various applications, particularly those involving Digital Signal Processors (DSPs), processors, ASICs, and FPGAs. This device is part of the TPS703xx family and is known for its high-performance, low noise, and fast transient response characteristics.
The TPS70351PWPR offers dual regulated output voltages, programmable sequencing, and integrated supervisory functions such as power-on reset (RESET) and power good (PG1) indicators. These features make it an ideal choice for systems requiring precise voltage regulation and power sequencing.
Key Specifications
| Parameter | Minimum | Typical | Maximum | Unit |
|---|---|---|---|---|
| Input Voltage Range (VIN1, VIN2) | -0.3 | - | 7 | V |
| Output Voltage Range (VOUT1, VOUT2) | - | - | 5.5 | V |
| Output Current (Regulator 1) | 0 | - | 1 | A |
| Output Current (Regulator 2) | 0 | - | 2 | A |
| Quiescent Current | - | 185 mA | - | mA |
| Input Current During Standby | - | 2 mA | - | mA |
| Operating Junction Temperature Range | -40 | - | 150 | °C |
| Storage Temperature Range | -65 | - | 150 | °C |
| ESD Rating (HBM) | - | - | 2 kV | - |
Key Features
- Dual Output Voltages for Split-Supply Applications
- Output Current Range: 1 A on Regulator 1 and 2 A on Regulator 2
- Fast Transient Response and Low Noise Output
- Voltage Options: 3.3 V/2.5 V, 3.3 V/1.8 V, 3.3 V/1.5 V, 3.3 V/1.2 V, and Dual Adjustable Outputs
- Programmable Sequencing Function
- Open Drain Power-On Reset with 120 ms Delay and Power Good Indicator
- Ultralow Quiescent Current and Low Input Current During Standby
- Manual Reset Inputs and Enable Function
- Thermal Shutdown Protection and Undervoltage Lockout (UVLO) Feature
- 24-Pin PowerPAD™ TSSOP Package
Applications
The TPS70351PWPR is designed for a variety of high-performance applications, including:
- Digital Signal Processors (DSPs)
- Processors and Microcontrollers
- Application-Specific Integrated Circuits (ASICs)
- Field-Programmable Gate Arrays (FPGAs)
- Other digital systems requiring dual regulated output voltages and power sequencing
Q & A
- What is the primary application of the TPS70351PWPR?
The TPS70351PWPR is primarily designed for Digital Signal Processors (DSPs) and other high-performance digital systems requiring dual regulated output voltages and power sequencing.
- What are the output current capabilities of the TPS70351PWPR?
The device can provide up to 1 A on Regulator 1 and up to 2 A on Regulator 2.
- What are the available voltage options for the TPS70351PWPR?
The device offers several voltage options including 3.3 V/2.5 V, 3.3 V/1.8 V, 3.3 V/1.5 V, 3.3 V/1.2 V, and dual adjustable outputs.
- Does the TPS70351PWPR have power sequencing capabilities?
Yes, the device features programmable sequencing, allowing for customizable power-up and power-down sequences.
- What is the quiescent current of the TPS70351PWPR?
The device has an ultralow quiescent current of typically 185 mA.
- Does the TPS70351PWPR have thermal protection?
Yes, the device includes thermal shutdown protection to prevent overheating.
- What is the package type of the TPS70351PWPR?
The device is packaged in a 24-Pin PowerPAD™ TSSOP package.
- How does the power-on reset (RESET) function work?
The RESET pin is an active low, open drain output that goes to a high impedance state after a 120 ms delay when all specified conditions are met, including VIN1 above the undervoltage condition, manual reset pins in a high impedance state, and VOUT2 above approximately 95% of its regulated voltage.
- What is the purpose of the power good (PG1) indicator?
The PG1 pin reports the voltage condition at VOUT1 and can be used to implement an SVS (power-on reset) for the circuitry supplied by regulator 1.
- What are the storage and operating temperature ranges for the TPS70351PWPR?
The storage temperature range is -65°C to +150°C, and the operating junction temperature range is -40°C to +150°C.
