Overview
The TPS70145PWPG4 is a dual-output low-dropout (LDO) voltage regulator produced by Texas Instruments. This integrated circuit is designed for split-voltage DSP systems and features power-up sequencing, making it suitable for applications requiring multiple regulated voltage outputs. The device is packaged in a 20-pin HTSSOP (Thin Shrink Small Outline Package) and operates over a wide temperature range of -40°C to 125°C. It is particularly useful in systems that require stable and regulated voltage supplies with minimal dropout voltage and high power supply rejection ratio (PSRR).
Key Specifications
| Parameter | Value |
|---|---|
| Manufacturer | Texas Instruments |
| Part Number | TPS70145PWPG4 |
| Description | IC REG LINEAR 3.3V/1.2V 20HTSSOP |
| Package/Case | 20-PowerTSSOP (0.173", 4.40mm Width) |
| Number of Regulators | 2 |
| Voltage - Input (Max) | 6V |
| Voltage - Output (Min/Fixed) | 3.3V, 1.2V |
| Current - Output | 500mA, 250mA |
| Current - Quiescent (Iq) | 190 µA |
| Voltage Dropout (Max) | 0.28V @ 500mA |
| PSRR @ 1kHz | 60dB |
| Operating Temperature Range | -40°C to 125°C |
| Protection Features | Over Current, Over Temperature, Reverse Polarity, Under Voltage Lockout (UVLO) |
| Control Features | Enable, Power Good, Reset, Sequencing |
Key Features
- Dual-Output LDO Regulators: Provides two regulated voltage outputs, typically 3.3V and 1.2V, with a maximum current output of 500mA and 250mA respectively.
- Power-Up Sequencing: Ensures that the voltage regulators power up in a controlled sequence, which is crucial for split-voltage DSP systems.
- High PSRR: Offers a high power supply rejection ratio of 60dB at 1kHz, ensuring stable output voltage despite input voltage variations.
- Low Dropout Voltage: Features a maximum dropout voltage of 0.28V at 500mA, minimizing the voltage difference between the input and output.
- Protection Features: Includes overcurrent, overtemperature, reverse polarity, and under-voltage lockout (UVLO) protections to ensure device reliability.
- Control and Monitoring: Provides enable, power good, reset, and sequencing features for comprehensive control and monitoring of the voltage regulators.
Applications
- SPLIT-VOLTAGE DSP SYSTEMS: Ideal for digital signal processing systems that require multiple regulated voltage levels.
- Embedded Systems: Suitable for use in embedded systems where stable and regulated voltage supplies are critical.
- Industrial and Automotive Electronics: Can be used in various industrial and automotive applications requiring reliable voltage regulation.
- Consumer Electronics: Applicable in consumer electronics such as smartphones, tablets, and other portable devices.
Q & A
- What is the TPS70145PWPG4 used for?
The TPS70145PWPG4 is a dual-output low-dropout voltage regulator used in split-voltage DSP systems and other applications requiring multiple regulated voltage outputs.
- What are the output voltages of the TPS70145PWPG4?
The device provides two regulated voltage outputs, typically 3.3V and 1.2V.
- What is the maximum current output of the TPS70145PWPG4?
The maximum current output is 500mA for one regulator and 250mA for the other.
- What is the operating temperature range of the TPS70145PWPG4?
The operating temperature range is -40°C to 125°C.
- What protection features does the TPS70145PWPG4 have?
The device includes overcurrent, overtemperature, reverse polarity, and under-voltage lockout (UVLO) protections.
- What is the power supply rejection ratio (PSRR) of the TPS70145PWPG4?
The PSRR is 60dB at 1kHz.
- What is the package type of the TPS70145PWPG4?
The device is packaged in a 20-pin HTSSOP (Thin Shrink Small Outline Package).
- Does the TPS70145PWPG4 support power-up sequencing?
Yes, it supports power-up sequencing, which is essential for split-voltage DSP systems.
- What is the quiescent current (Iq) of the TPS70145PWPG4?
The quiescent current is 190 µA.
- Is the TPS70145PWPG4 RoHS compliant?
No, the TPS70145PWPG4 is not RoHS compliant.
