Overview
The TLV70235DBVR is a part of the TLV702 series of low-dropout (LDO) linear regulators produced by Texas Instruments. These regulators are designed for power-sensitive applications and feature low quiescent current, excellent line and load transient performance, and high power-supply rejection ratio (PSRR). The TLV70235DBVR is specifically configured to provide a fixed output voltage of 3.5V and is suitable for battery-operated handheld equipment due to its low dropout voltage and low output noise.
Key Specifications
| Parameter | Value | Unit |
|---|---|---|
| Output Voltage | 3.5 | V |
| Output Current | 300 | mA |
| Dropout Voltage (VDO) | Dependent on output current | V |
| Power-Supply Rejection Ratio (PSRR) | Up to 68 dB @ 1 kHz | dB |
| Output Noise Voltage | 48 μVRMS @ 100 Hz to 100 kHz | μVRMS |
| Start-up Time | 100 μs @ COUT = 1 μF, IOUT = 300 mA | μs |
| Enable Pin High (Enabled) | 0.9 V | V |
| Enable Pin Low (Disabled) | 0.4 V | V |
| Enable Pin Current | 0.04 μA @ VIN = VEN = 5.5 V | μA |
| Undervoltage Lockout (UVLO) | 1.9 V (rising) | V |
| Thermal Shutdown Temperature | 165°C (shutdown), 145°C (reset) | °C |
| Operating Junction Temperature | -40 to 125°C | °C |
Key Features
- Low Quiescent Current: Designed to minimize power consumption, making it ideal for battery-operated devices.
- High PSRR and Low Output Noise: Ensures stable output voltage with minimal noise, suitable for sensitive electronic circuits.
- Low Dropout Voltage: Achieved using a PMOS pass transistor, which reduces the voltage drop between input and output.
- Integrated Protection Features: Includes thermal shutdown, current limit, and undervoltage lockout (UVLO) to protect the regulator during fault conditions.
- Precision Bandgap and Error Amplifier: Provides overall 2% accuracy in output voltage regulation.
Applications
The TLV70235DBVR is particularly suited for battery-operated handheld equipment, such as mobile phones, tablets, and other portable devices. It is also applicable in various power-sensitive applications where low dropout voltage and high PSRR are critical, including medical devices, industrial control systems, and consumer electronics.
Q & A
- What is the output voltage of the TLV70235DBVR?
The output voltage of the TLV70235DBVR is 3.5V. - What is the maximum output current of the TLV70235DBVR?
The maximum output current is 300 mA. - What is the typical dropout voltage for the TLV70235DBVR?
The dropout voltage scales approximately with the output current. - What is the power-supply rejection ratio (PSRR) of the TLV70235DBVR?
The PSRR is up to 68 dB at 1 kHz. - Does the TLV70235DBVR have built-in protection features?
Yes, it includes thermal shutdown, current limit, and undervoltage lockout (UVLO). - What is the operating junction temperature range of the TLV70235DBVR?
The operating junction temperature range is -40°C to 125°C. - How does the TLV70235DBVR handle startup?
The start-up time is approximately 100 μs with a 1 μF output capacitor and 300 mA output current. - What is the purpose of the enable pin on the TLV70235DBVR?
The enable pin allows the regulator to be turned on or off, with a high voltage (0.9 V) enabling the regulator and a low voltage (0.4 V) disabling it. - Is the TLV70235DBVR suitable for use in safety-critical applications?
No, it is not recommended for use in safety-critical applications without proper evaluation and validation. - Where can I find detailed specifications and documentation for the TLV70235DBVR?
Detailed specifications and documentation can be found on the Texas Instruments website and through authorized distributors like Mouser and Digi-Key.
