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2A, 6.5V, Ultra Low Noise, Ultra Low Dropout Linear Regulator

RTQ2532W

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The RTQ2532W is a high-current (2A), low-noise (6.8μVRMS), high accuracy (1% over line, load, and temperature), low-dropout linear regulator (LDO) capable of sourcing 2A with extremely low dropout (max. 125mV). The device output voltage is pin-selectable (up to 3.95V) using a PCB layout without the need of external resistors, thus reducing overall component count. Designers can achieve higher output voltage with the use of external resistor divider. The device supports single input supply voltage as low to 1.1V that makes it easy to use.

The low noise, high PSRR and high output current capability makes the RTQ2532W ideal to power noise-sensitive devices such as analog-to-digital converters (ADCs), digital-to-analog converters (DACs), and RF components. With very high accuracy, remote sensing, and soft-start capabilities to reduce inrush current, the RTQ2532W is ideal for powering digital loads such as FPGAs, DSPs, and ASICs.

The external enable control and power good indicator function makes 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 VQFN-20L 5x5 package.

Applications

  • Portable Electronic Devices
  • Wireless Infrastructures : SerDes, FPGA, DSP
  • RF, IF Components : VCO, ADC, DAC, LVDS
Key Spec.
RTQ2532W
Status Active
Vin (min) (V) 1.1
Vin (max) (V) 6.5
Vout (min) (V) 0.8
Vout (max) (V) 5.5
Output Adj. Method Resistor
Accuracy (+/- %) 1
Iout (max) (mA) 2000
Iq (typ) (uA) 3700
Vdropout @ rated current (typ) (mV) 125 @ 2A
Cout Type Ceramic
Features Adjustable Soft-Start;Enable Input;Extra Low Noise;High PSRR;Low Dropout;OCP;Power Good;SCP
Package Type VQFN5x5-20
Features
  • Input Voltage Range : 1.1V to 6.5V
  • Two Output Voltage Modes
    ► 0.8 V to 5.5V (Set by a Resistive Divider)
    ► 0.8 V to 3.95V (Set via PCB Layout, No External Resistor Required)
  • Accurate Output Voltage Accuracy (1%) Over Line, Load and Temperature
  • Ultra High PSRR : 40dB at 500kHz
  • Excellent Noise Immunity
    ► 6.8μVRMS at 0.8V Output
    ► 10μVRMS at 3.3V Output
  • Ultra Low Dropout Voltage : 125mV at 2A
  • Enable Control
  • Programmable Soft-Start Output
  • Stable with a 22μF or Larger Ceramic Output Capacitor
  • Support Power-Good Indicator Function
  • RoHS Compliant and Halogen Free
Datasheet
TitleLast UpdateShareDownload
2A, 6.5V, Ultra Low Noise, Ultra Low Dropout Linear Regulator2019/08/06
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