Overview
The TLV75533PDRVR is a 500mA, low quiescent current (IQ), low-dropout voltage regulator (LDO) produced by Texas Instruments. This ultra-small regulator is designed to provide excellent line and load transient performance, making it suitable for a wide variety of applications. It supports an input voltage range from 1.45V to 5.5V and is available in fixed output voltages ranging from 0.6V to 5V, which is particularly useful for modern microcontrollers (MCUs) with lower core voltages. The device features an internal soft-start, foldback current limit, and active output discharge, ensuring controlled voltage and reduced thermal dissipation during short-circuit events.
Key Specifications
| Parameter | Value | Unit |
|---|---|---|
| Input Voltage Range | 1.45V to 5.5V | V |
| Output Current | 500mA | A |
| Quiescent Current (IQ) | 25μA (typical) | A |
| Dropout Voltage | 238mV (maximum at 500mA, 3.3VOUT) | mV |
| Output Accuracy | 1% (maximum at 85°C) | % |
| Power Supply Rejection Ratio (PSRR) | 46dB at 100kHz | dB |
| Operating Junction Temperature | -40°C to +125°C | °C |
| Package Types | SOT-23-5, X2SON-4, WSON-6 | |
| Enable Pin Voltage | VHI: 1V, VLO: 0.3V | V |
| Thermal Shutdown Temperature | 165°C (shutdown), 155°C (reset) | °C |
Key Features
- Low Quiescent Current (IQ): Typical IQ of 25μA to minimize standby power consumption.
- Low Dropout Voltage: Maximum dropout voltage of 238mV at 500mA output current for 3.3V output.
- High PSRR: Power supply rejection ratio of 46dB at 100kHz.
- Internal Soft-Start: Monotonic VOUT rise to lower inrush current during startup.
- Foldback Current Limit: Reduces thermal dissipation during short-circuit events.
- Active Output Discharge: Quickly discharges the output when the device is shut down).
- Thermal Shutdown and Undervoltage Lockout (UVLO): Protects the device from overheating and ensures stable operation within the specified input voltage range).
- Stable with Small Ceramic Output Capacitors: Allows for a compact solution size).
Applications
- Set-top boxes, TV, and gaming consoles: Suitable for various consumer electronics requiring stable voltage regulation).
- Portable and battery-powered equipment: Ideal for devices needing low power consumption and compact design).
- Desktops, notebooks, and ultrabooks: Used in computing devices to regulate power efficiently).
- Tablets and remote controls: Applicable in handheld devices requiring low dropout voltage and high PSRR).
- White goods and appliances: Can be used in household appliances to ensure reliable voltage supply).
- Grid infrastructure and protection relays: Suitable for industrial applications requiring robust voltage regulation).
- Camera modules and image sensors: Used in imaging devices to provide stable power supply).
Q & A
- What is the input voltage range of the TLV75533PDRVR?
The input voltage range is from 1.45V to 5.5V).
- What is the maximum output current of the TLV75533PDRVR?
The maximum output current is 500mA).
- What is the typical quiescent current (IQ) of the TLV75533PDRVR?
The typical IQ is 25μA).
- What is the dropout voltage of the TLV75533PDRVR at 500mA output current for a 3.3V output?
The maximum dropout voltage is 238mV).
- What is the power supply rejection ratio (PSRR) of the TLV75533PDRVR at 100kHz?
The PSRR is 46dB).
- Does the TLV75533PDRVR have an internal soft-start feature?
Yes, it has an internal soft-start feature to lower inrush current during startup).
- What is the purpose of the foldback current limit in the TLV75533PDRVR?
The foldback current limit reduces thermal dissipation during short-circuit events).
- How does the TLV75533PDRVR handle thermal shutdown?
The device shuts down at 165°C and resets at 155°C).
- What types of packages are available for the TLV75533PDRVR?
The device is available in SOT-23-5, X2SON-4, and WSON-6 packages).
- What are some common applications of the TLV75533PDRVR?
Common applications include set-top boxes, portable electronics, desktops, notebooks, tablets, and industrial devices).
