RTQ2539A Datasheet | Richtek

Description The RTQ2539A is a high-current (3A), low-noise (6.8μVRMS), high accuracy (1% over line, load, and temperature), low-dropout linear regulator (LDO) capable of sourcing 3A with extremely low dropout (max. 130m V). The device supports single input supply voltage as low to 1.1V, which makes it easy to use. The low-noise, high PSRR and high output current capability makes the RTQ2539A ideal to power noise-sensitive devices such as analog-to-digital converters (ADCs), digital-to-analog converters (DACs), and RF ponents. With very high accuracy, remote sensing, and soft-start capabilities to reduce inrush current, the RTQ2539A is ideal for powering digital loads such as FPGAs, DSPs, and ASICs. The external enable control and power good indicator function make the control sequence easier. The output noise immunity is enhanced by adding external bypass capacitor on the NR/SS pin. The device is fully specified over the temperature range of TJ = - 40°C to 125°C and is offered in a WQFN-12L 2.2x2.5 (FC) package. Features - Input Voltage Range : 1.1V to 6.5V - Output Voltage Range : 0.8 V to 5.5V - Accurate Output Voltage Accuracy (1%) Over Line, Load and Temperature - Ultra High PSRR : 40d B at 500k Hz - Excellent Noise Immunity 6.8μVRMS at 0.8V Output 10μVRMS at 3.3V Output - Ultra Low Dropout Voltage : 130m V at 3A - Enable Control - Programmable Soft-Start Output - Stable with a 47μF or Larger Ceramic Output Capacitor - Support Power-Good Indicator Function - Ro HS pliant and Halogen Free - Junction Temperature Range : - 40°C to 125°C Applications - Portable Electronic Devices - Wireless Infrastructures : Ser Des, FPGA, DSP - RF, IF ponents : VCO, ADC, DAC, LVDS Simplified Application Circuit Power Good VOUT Enable VOUT R3 PGOOD CNR/SS EN...