Overview
The TLV75533PDBVR is a low-dropout regulator (LDO) produced by Texas Instruments. This ultra-small device is designed to source 500 mA of current with excellent line and load transient performance. It is optimized for a wide range of applications, supporting an input voltage range from 1.45 V to 5.5 V and offering fixed output voltages from 0.6 V to 5 V. This makes it particularly suitable for modern microcontrollers (MCUs) and other low-voltage applications, reducing both cost and solution size.
The TLV75533PDBVR features a low quiescent current (IQ) of 25 µA, low dropout voltage, and high power supply rejection ratio (PSRR), making it an efficient and reliable choice for various electronic systems.
Key Specifications
| Parameter | Minimum | Typical | Maximum | Unit |
|---|---|---|---|---|
| Input Voltage (VIN) | 1.45 | - | 5.5 | V |
| Output Voltage (VOUT) | 0.6 | - | 5.0 | V |
| Output Current (IOUT) | 0 | - | 500 | mA |
| Quiescent Current (IQ) | - | 25 | - | µA |
| Dropout Voltage (VDROP) | - | - | 238 | mV (at 500 mA, 3.3 VOUT) |
| Output Accuracy | - | - | 1% | (at 85°C) |
| Power Supply Rejection Ratio (PSRR) | - | - | 46 dB | (at 100 kHz) |
| Junction Temperature (TJ) | -40 | - | 125 | °C |
| Enable Voltage (VEN) | 0 | - | 5.5 | V |
Key Features
- Ultra-Small Package: Available in SOT-23-5, X2SON-4, and WSON-6 packages, including a thermally enhanced SOT23-5 (DYD) package with a thermal pad.
- Low Quiescent Current (IQ): Typical IQ of 25 µA to minimize standby power.
- Low Dropout Voltage: Maximum dropout voltage of 238 mV at 500 mA (3.3 VOUT).
- High PSRR: Power supply rejection ratio of 46 dB at 100 kHz.
- Output Accuracy: Typical accuracy of 1% at 85°C.
- Internal Soft-Start: Reduces inrush current and provides a controlled voltage to the load during startup.
- Active Output Discharge: Actively pulls down the output to quickly discharge the outputs during shutdown.
- Integrated Protection Features: Includes thermal shutdown, current limit, undervoltage lockout (UVLO), and foldback current limit.
- Stability with Small Ceramic Capacitors: Stable with a 1-µF ceramic output capacitor, allowing for a small overall solution size.
Applications
- Set-Top Boxes, TV, and Gaming Consoles: Suitable for various consumer electronics.
- Portable and Battery-Powered Equipment: Ideal for devices requiring low power consumption and compact design.
- Desktop, Notebooks, and Ultrabooks: Used in computing devices to regulate power efficiently.
- Tablets and Remote Controls: Supports the power requirements of handheld and remote devices.
- White Goods and Appliances: Can be used in household appliances for reliable power regulation.
- Grid Infrastructure and Protection Relays: Suitable for industrial applications requiring robust power regulation.
- Camera Modules and Image Sensors: Used in imaging and sensing applications where stable power is crucial.
Q & A
- What is the input voltage range of the TLV75533PDBVR?
The input voltage range is from 1.45 V to 5.5 V.
- What is the typical quiescent current (IQ) of the TLV75533PDBVR?
The typical IQ is 25 µA.
- What is the maximum dropout voltage of the TLV75533PDBVR at 500 mA and 3.3 VOUT?
The maximum dropout voltage is 238 mV.
- What is the power supply rejection ratio (PSRR) of the TLV75533PDBVR at 100 kHz?
The PSRR is 46 dB.
- What are the integrated protection features of the TLV75533PDBVR?
The device includes thermal shutdown, current limit, undervoltage lockout (UVLO), and foldback current limit.
- What is the typical output accuracy of the TLV75533PDBVR at 85°C?
The typical output accuracy is 1%.
- What types of packages are available for the TLV75533PDBVR?
The device is available in SOT-23-5, X2SON-4, and WSON-6 packages, including a thermally enhanced SOT23-5 (DYD) package with a thermal pad.
- What is the junction temperature range of the TLV75533PDBVR?
The junction temperature range is from -40°C to 125°C..
- What is the purpose of the internal soft-start feature in the TLV75533PDBVR?
The internal soft-start reduces inrush current and provides a controlled voltage to the load during startup.
- How does the TLV75533PDBVR handle output discharge during shutdown?
The device actively pulls down the output to quickly discharge the outputs during shutdown.
