GD30LD3300FU

Features

 Input Voltage Range

– With BIAS: 1.1 V to 6.5 V

– Without BIAS: 1.4 V to 6.5 V

 Output Voltage Range

– 0.5 V to 5.2 V, Set by a Resistor Divider

– 0.5 V to 2.075 V, Pin-Setting, No External Resistor

 Accurate Output Voltage Accuracy: 1%, Over Line, Load and Temperature

 Ultra Low Dropout Voltage: Maximum 180 mV at 3 A with BIAS

 Ultra High PSRR: 39 dB at 500 KHz

 Excellent Noise Immunity

– 5.9 uVRMS at 0.5 V Output

– 9.8 uVRMS at 5 V Output

 Enable Function

 Programmable Soft-Start

 Power-Good Indicator Function

2 Applications

 Wireless Infrastructure: 5G AAU, 4G RRU….

 Telecom/Networking Cards

 Industrial Application

3 General description

The GD30LD3300x is a high-current, low-noise, high accuracy, low-dropout linear regulator 

(LDO) capable of sourcing 3 A with extreme low dropout (max, 180 mV).

The device output voltage is pin-selectable from 0.5 V to 2.075 V and adjustable from 0.5 V 

to 5.2 V using the external resistor divider. The device supports input supply voltage as low 

to 1.1 V with BIAS and as low to 1.4 V without BIAS. 

The low noise, high PSRR and high output current capability makes the GD30LD3300xx 

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 GD30LD3300x 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 

NR/SS pin. The device is fully specified over the temperature range of TJ = −40°C to 125°C 

and is offered in a QFN20 3.5x3.5 package.