Overview
The TPS70348PWPR, part of the TPS703xx family, is a dual-output low dropout (LDO) voltage regulator designed by Texas Instruments. This device is tailored for high-performance power management solutions, particularly in Digital Signal Processor (DSP) applications, as well as other digital systems such as processors, ASICs, and FPGAs. It offers a comprehensive set of features including dual regulated output voltages, programmable sequencing, and low quiescent current, making it an ideal choice for systems requiring precise power management.
Key Specifications
| Parameter | Value | Unit |
|---|---|---|
| Input Voltage Range | 2.7 to 6 | V |
| Output Voltage 1 (VOUT1) | 3.3 V | V |
| Output Voltage 2 (VOUT2) | 1.5 V | V |
| Output Current (Regulator 1) | 0 to 1 A | A |
| Output Current (Regulator 2) | 0 to 2 A | A |
| Quiescent Current | 185 mA (typ) | mA |
| Standby Current | 2 mA | mA |
| Accuracy Over Load and Temperature | 2% | % |
| Thermal Shutdown Junction Temperature | +150 °C | °C |
| Package Type | HTSSOP-24 (PWP) | |
| Operating Temperature Range | -40°C to +125°C | °C |
Key Features
- Dual Output Voltages for Split-Supply Applications
- Independent Enable Functions
- Fast Transient Response
- Voltage Options: 3.3 V/1.5 V, among others
- Open Drain Power-On Reset with 120 ms Delay
- Open Drain Power Good for Regulator 1
- Ultralow Quiescent Current
- Low Noise: 78 mVRMS Without Bypass Capacitor
- Quick Output Capacitor Discharge Feature
- Two Manual Reset Inputs
- Undervoltage Lockout (UVLO) Feature
- Thermal Shutdown Protection
Applications
The TPS70348PWPR is designed for various high-performance digital systems, including:
- Digital Signal Processors (DSPs)
- Processors
- Application-Specific Integrated Circuits (ASICs)
- Field-Programmable Gate Arrays (FPGAs)
- Other digital systems requiring dual regulated output voltages and precise power sequencing.
Q & A
- What is the primary application of the TPS70348PWPR?
The TPS70348PWPR is primarily designed for Digital Signal Processor (DSP) applications and other high-performance digital systems.
- What are the output voltages of the TPS70348PWPR?
The TPS70348PWPR provides dual output voltages of 3.3 V and 1.5 V.
- What is the maximum output current for each regulator?
The maximum output current for Regulator 1 is 1 A, and for Regulator 2 is 2 A.
- What is the quiescent current of the TPS70348PWPR?
The quiescent current is typically 185 mA.
- Does the TPS70348PWPR have thermal shutdown protection?
- What is the purpose of the SEQ terminal?
The SEQ terminal controls the power-up sequence of the regulators. It can be used to sequence the power-up of VOUT1 and VOUT2.
- What is the function of the PG1 pin?
The PG1 pin reports the voltage condition at VOUT1 and can be used to implement a power-on reset (POR) for the circuitry supplied by regulator 1.
- How does the RESET terminal function?
The RESET terminal is an active low, open drain output that requires a pull-up resistor. It goes to a high impedance state after a 120 ms delay when certain conditions are met.
- What is the package type of the TPS70348PWPR?
The device is packaged in a 24-pin HTSSOP (PWP) package.
- What is the operating temperature range of the TPS70348PWPR?
The operating temperature range is -40°C to +125°C.
