Overview
The TPS70458PWP is a dual-output, ultra-low-dropout voltage regulator produced by Texas Instruments. This device is part of the TPS704xx family, designed to provide a complete power management solution for various applications, including split-supply requirements. It features integrated supervisory voltage (SVS) functions, power good (PG) signals, and independent enable controls for each regulator. The TPS70458PWP is capable of supplying 1 A and 2 A from regulator 1 and regulator 2, respectively, with a typical quiescent current of 185 µA at full load.
Key Specifications
| Parameter | Value | Unit |
|---|---|---|
| Package | HTSSOP (PWP) | - |
| Pins | 24 | - |
| Operating Temperature Range | -40 to 125 | °C |
| Output Current (Regulator 1) | 1 A | - |
| Output Current (Regulator 2) | 2 A | - |
| Quiescent Current (Typical) | 185 µA | - |
| Input Current During Standby | 2 µA | - |
| Dropout Voltage (Typical, Regulator 1) | 160 mV | - |
| Noise (RMS Without Bypass Capacitor) | 78 µV | - |
| Accuracy Over Load and Temperature | 2% | - |
| Power Good (PG) and Power-On Reset (POR) Delay | 120 ms | - |
Key Features
- Dual Output Voltages for Split-Supply Applications
- Independent Enable Functions for Each Regulator
- Fast Transient Response
- 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
- Open Drain Power-On Reset with 120-ms Delay
- Open Drain Power Good for Regulator 1 and Regulator 2
- Ultralow Quiescent Current: 185 µA (Typical)
- Low Noise: 78 µV RMS Without Bypass Capacitor
- Quick Output Capacitor Discharge Feature
- One Manual Reset Input
- Undervoltage Lockout (UVLO) Feature
- 24-Pin PowerPAD™ TSSOP Package
- Thermal Shutdown Protection
Applications
The TPS70458PWP is designed to provide a complete power management solution for various applications, including:
- Texas Instruments DSP and processor power
- ASIC and FPGA power management
- Digital systems requiring dual output voltage regulators
- Systems needing power sequencing and supervisory functions
Q & A
- What is the package type of the TPS70458PWP?
The TPS70458PWP comes in a 24-pin HTSSOP (PWP) package.
- What are the output current capabilities of the TPS70458PWP?
Regulator 1 can supply up to 1 A, and regulator 2 can supply up to 2 A.
- What is the typical quiescent current of the TPS70458PWP?
The typical quiescent current is 185 µA at full load.
- What are the voltage options available for the TPS70458PWP?
The device offers fixed voltage options such as 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 TPS70458PWP have power good and power-on reset features?
Yes, it features open drain power good for each regulator and an open drain power-on reset with a 120-ms delay.
- What is the noise performance of the TPS70458PWP?
The device has a low noise output of 78 µV RMS without the need for bypass capacitors.
- Is the TPS70458PWP protected against thermal and undervoltage conditions?
Yes, it includes thermal shutdown protection and undervoltage lockout (UVLO) features.
- Can the output capacitors be quickly discharged when the regulator is turned off?
Yes, the device features a quick output capacitor discharge function.
- How many manual reset inputs does the TPS70458PWP have?
The device has one manual reset input.
- What is the operating temperature range of the TPS70458PWP?
The operating temperature range is from -40°C to 125°C.
