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RTQ2552A

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

RTQ2552A
New

The RTQ2552A is a high-current, low-noise, high accuracy, low-dropout linear regulator (LDO) capable of sourcing 2A with an extremely low dropout voltage (maximum 385mV). The device supports a single input supply voltage as low as 1.1V, enhancing its ease of use.
The low-noise, high PSRR, and high output current capability make the RTQ2552A ideal for powering 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 RTQ2552A is suitable for powering digital loads such as FPGAs, DSPs, and ASICs.
The external enable control and power-good indicator function simplify the control sequence. The output noise immunity is enhanced by adding an 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 the WDFN-10L 2.5x2.5 (FC) package.

Applications

  • Portable Electronic Devices
  • Wireless Infrastructures: SerDes, FPGA, DSP
  • RF, IF, Components: VCO, ADC, DAC, LVDS

Key Spec.

RTQ2552A
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) 2800
Vdropout @ rated current (typ) (mV) 172 @ 2A
Bias Rail No
Cout Type Ceramic
Charge Pump Yes
Features Adjustable Soft-Start;Enable Input;Low Dropout;OCP;Power Good;Stable with Ceramic Capacitor
Package Type WDFN2.5x2.5-10L(FC)

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: 44dB at 500kHz

  • Excellent Noise Immunity
    ► 7.8μVRMS at 0.8V Output
    ► 12.8μVRMS at 5V Output

  • Ultra-Low Dropout Voltage: 90mV Maximum at 2A

  • Enable Control

  • Programmable Soft-Start Output

  • Stable with a 47μF or Larger Ceramic Output Capacitor

  • Support Power-Good Indicator Function

Application Notes

Datasheet

RTQ2552A_DS-00.pdf

Datasheet

RTQ2552A_DS-00.pdf

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