Texas Instruments TPS7A20 Low-Dropout (LDO) Linear Regulators
Texas Instruments TPS7A20 Low-Dropout (LDO) Linear Regulators can source 300mA of output current. The TPS7A20 is designed to provide low noise, high PSRR, and excellent load and line transient performance that can meet the requirements of RF and other sensitive analog circuits. Using innovative design techniques, the TPS7A20 regulators offer an ultra-low noise performance without adding a noise bypass capacitor. The TPS7A20 regulators also provide the advantage of low quiescent current, which is ideal for battery-powered applications.
With an input voltage range of 1.6V to 6.0V and an output range of 0.8V to 5.5V, the Texas Instruments TPS7A20 can be used for various applications. The device uses a precision reference circuit to provide a maximum accuracy of 1.5% overload, line, and temperature variations. The Texas Instruments TPS7A20 features an internal soft-start to lower the inrush current, thus minimizing the input voltage drop during startup. The device is stable with small ceramic capacitors, allowing for a small overall solution size.
The TPS7A20 has a smart enable input circuit with an internally controlled pulldown resistor that keeps the LDO disabled even when the EN pin is left floating and helps eliminate the external components used to pulldown the EN pin.
Features
- 7µVRMS low output voltage noise
- No noise-bypass capacitor required
- 95dB at 1kHz high PSRR
- 6.5µA very low IQ
- 1.6V to 6.0V input voltage range
- 0.8V to 5.5V output voltage range
- ±1.5% (max) output voltage tolerance
- Very low dropout
- 140mV (max) at 300mA (VOUT = 3.3V)
- Low inrush current
- Smart enable pulldown
- Stable with 1µF minimum ceramic output capacitor
- Packages
- 1mm × 1mm X2SON
Applications
- Smartphones and tablets
- IP network cameras
- Portable medical equipment
- Smart meters and field transmitters
- Motor drives
- Wearables
Functional Block Diagram
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