| Allicdata Part #: | 296-8027-5-ND |
| Manufacturer Part#: |
TPS70445PWP |
| Price: | $ 0.00 |
| Product Category: | Integrated Circuits (ICs) |
| Manufacturer: | Texas Instruments |
| Short Description: | IC REG LINEAR 3.3V/1.2V 24HTSSOP |
| More Detail: | Linear Voltage Regulator IC Positive Fixed 2 Outpu... |
| DataSheet: |  TPS70445PWP Datasheet/PDF |
| Quantity: | 637 |
Specifications
| Current - Output: | 1A, 2A |
| Base Part Number: | TPS70445 |
| Supplier Device Package: | 24-HTSSOP |
| Package / Case: | 24-TSSOP (0.173", 4.40mm Width) Exposed Pad |
| Mounting Type: | Surface Mount |
| Operating Temperature: | -40°C ~ 125°C |
| Protection Features: | Over Current, Over Temperature, Reverse Polarity, Under Voltage Lockout (UVLO) |
| Control Features: | Enable, Power Good, Reset, Sequencing |
| PSRR: | 65dB (1kHz), 60dB (1kHz) |
| Current - Quiescent (Iq): | 250µA |
| Series: | -- |
| Voltage Dropout (Max): | 0.25V @ 1A, - |
| Voltage - Output (Max): | -- |
| Voltage - Output (Min/Fixed): | 3.3V, 1.2V |
| Voltage - Input (Max): | 6V |
| Number of Regulators: | 2 |
| Output Type: | Fixed |
| Output Configuration: | Positive |
| Part Status: | Active |
| Packaging: | Tube |
Description
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The TPS70445PWP is a power management integrated circuit (PMIC) voltage regulator of the Linear family, specifically manufactured to provide tight output voltage regulation, minimum noise, and low power consumption. It provides one regulated output voltage from an input voltage range of 2.3 V to 6 V, temperature range from 40 °C to 85 °C, and output voltage range from 0.8 V to 5.25 V. Moreover, the TPS70445PWP has an integrated high-accuracy reference, amplifier, PNP output transistor, current limiter, thermal shutdown, and undervoltage lockout, making it an ideal choice for a wide range of commercial, industrial, and telecommunications power supplies, including integrated and tracking systems, high-current regulators, automotive, and point-of-load converters.
The main application field of the TPS70445PWP is supplying power to microprocessors, digital signal processors (DSPs) and low voltage sys-tem ICs in a variety of automotive, industrial and telecom-munication applications. The main features that enable the TPS70445PWP to provide strict voltage regulation, low noise and low power conduction are its integrated high-accuracy reference, amplifier, PNP output transistor and current limiter. The PNP output transistor is especially ben-eficial since it allows the regulator to drive a load current much larger than its on-chip current limit. Furthermore, the regulator’s integrated cur-rent limiter and thermal shutdown provide protection from damage caused by long-term overloading, allowing the power supply to maintain reliable protection even during prolonged high-current operation.
The TPS70445PWP incorporates a 0.8 V to 5.25 V output voltage sensing circuit, which senses the output voltage from the load and feeds it back to the regulator. The error amplifier senses the difference between the voltage output and the reference voltage, and modulates the on-chip PNP output transistor to regulate the output voltage. The magnitude of the error amp’s output voltage is proportional to the size of the voltage difference and is used to gate the PNP output transistor.
To minimize power consumption, the TPS70445PWP uses an on-chip low dropout (LO-DO) regulator. The LO-DO regulator is essen-tially a linear voltage regulator that is capable of supplying a fixed output voltage with input voltages that are within a few hundred millivolts of the output voltage. The low dropout feature of the TPS70445PWP is useful for applications where the input voltage varies widely or drops below the output voltage, such as portable electronic products. The LO-DO regulator ensures that the output voltage remains within a certain tolerance regardless of fluctuations in the input voltage.
Moreover, the TPS70445PWP is designed for high-current operations, allowing it to be used for applications that require higher cur-rents. There is an integrated current limiter that is adjustable from 10 mA up to 300 mA. The current limiter can help prevent overloading of the regulator by limiting the current it draws from the input voltage source. Moreover, the TPS70445PWP includes an over temperature protection feature that helps protect the device from thermal runaway. This feature monitors the temperature of the on-chip components and shuts down the regulator if the temperature exceeds a certain limit set by the user.
In summary, the TPS70445PWP is a versatile and efficient voltage regulator. It is suitable for a wide range of commercial, industrial, and telecommunications power supplies, including integrated and tracking systems, high-current regulators, automotive, and point-of-load converters. Its integrated features—like the high-accuracy reference, amplifier, PNP output transistor and current limiter—allow for tight regulation, low noise and low power conduction. It uses an on-chip low dropout regulator to minimize power consumption and has an over temperature protection feature to protect the device from thermal runaway.
The specific data is subject to PDF, and the above content is for reference
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