Overview
The TPS70348PWP, produced by Texas Instruments, is a dual-output low dropout (LDO) voltage regulator designed to provide a comprehensive 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 quiescent current, and fast transient response.
It offers dual regulated output voltages, programmable sequencing, and several features that enhance system reliability and reduce component cost and board space. The TPS70348PWP is packaged in a 24-pin PowerPAD™ TSSOP, which aids in thermal management.
Key Specifications
| Parameter | Value | Unit |
|---|---|---|
| Input Voltage Range | 2.5 V to 6 V | V |
| Output Voltages | 3.3 V / 1.5 V (fixed), Dual Adjustable | V |
| Output Current | 1 A (Regulator 1), 2 A (Regulator 2) | A |
| Quiescent Current | 185 mA (typ) | mA |
| Input Current During Standby | 2 mA | mA |
| Accuracy Over Load and Temperature | 2% | % |
| Undervoltage Lockout (UVLO) | 2.5 V | V |
| Power-On Reset (POR) Delay | 120 ms | ms |
| Package Type | 24-Pin PowerPAD™ TSSOP | |
| Operating Temperature Range | -40°C to +125°C | °C |
Key Features
- Independent Enable Functions
- Fast Transient Response
- Low Noise: 78 mVRMS Without Bypass Capacitor
- Quick Output Capacitor Discharge Feature
- Two Manual Reset Inputs
- Open Drain Power-On Reset with 120 ms Delay
- Open Drain Power Good for Regulator 1
- Programmable Sequencing
- Thermal Shutdown Protection
- Ultralow Quiescent Current
Applications
The TPS70348PWP is designed for applications requiring dual output voltage regulators, particularly in the following areas:
- Digital Signal Processors (DSPs)
- Processors
- Application-Specific Integrated Circuits (ASICs)
- Field-Programmable Gate Arrays (FPGAs)
- Digital systems requiring power sequencing and high accuracy voltage regulation
Q & A
- What is the primary application of the TPS70348PWP?
The TPS70348PWP is primarily designed for power management in Digital Signal Processors (DSPs), processors, ASICs, and FPGAs.
- What are the output voltages of the TPS70348PWP?
The device offers fixed output voltages of 3.3 V and 1.5 V, with the option for dual adjustable outputs.
- What is the maximum output current for each regulator?
Regulator 1 can supply up to 1 A, while Regulator 2 can supply up to 2 A.
- What is the quiescent current of the TPS70348PWP?
The quiescent current is typically 185 mA.
- Does the TPS70348PWP have a power-on reset feature?
Yes, it features an open drain power-on reset (POR) with a 120 ms delay.
- How does the sequencing feature work?
The sequencing can be programmed to turn on the outputs in a specific order, with the option to reverse the order based on the state of the SEQ pin.
- What is the package type of the TPS70348PWP?
The device is packaged in a 24-pin PowerPAD™ TSSOP.
- What is the operating temperature range of the TPS70348PWP?
The operating temperature range is -40°C to +125°C.
- Does the TPS70348PWP have thermal protection?
Yes, it features thermal shutdown protection.
- How does the undervoltage lockout (UVLO) feature work?
The UVLO prevents the output from turning on until the input voltage reaches 2.5 V.
