• Input Voltage Range:

         o Without Bias Supply: 1.5V to 6.0V

         o With Bias Supply: 1.1V to 6.0V

• Output Voltage Setting:

        o Set by External Resistor Divider: 0.5V to 5.2V

        o Set via PCB Layout of Output Voltage 

• Setting Pins: 0.5V to 3.6V
• Output Voltage Accuracy: ±1.5% from -40 °C to 125 °C
• Low Dropout Voltage: 160mV (Typ.) at 4A(3.3V VOUT)
• Power Supply Rejection Ratio (PSRR): 40dBat 500kHz
• Excellent Noise Immunity:

          o 6.4μVRMS at 0.5V Output

          o 11.3μVRMS at 3.3V Output

• Enable Control
• Power Good Indicator
• Programmable Soft-Start Output
• Stable with 47μF or higher Output Ceramic Capacitor
• Over-Current Limit and Short-Circuit Protection
• Over-Temperature Protection with Auto Recovery
• Moisture Sensitivity Level (MSL): 3
• Compact QFN3.5×3.5-20 Package

The SQ24303C is a 4A high-current linear regulator featuring ultra-low noise (6μVRMS), precise output with ± 1.5% reference voltage accuracy over temperature, and low dropout voltage.

The SQ24303C offers a pin-selectable output voltage from 0.5V to 3.6V with 50mV step and also supports an adjustable output voltage from 0.5V to 5.2V with using of the external resistors.

Attributed to the high performance of ultra-low noise, high power supply rejection ratio (PSRR) and high current capability, the device is ideal for powering noise sensitive devices such as CMOS Image Sensor (CIS), Radio Frequency modules (RFs), Power Amplifiers (PAs), Analog-to-digital converters (ADCs) and Digital-to-analog converters (DACs). With low input voltage, low dropout voltage, and precise output capabilities, the SQ24303C is ideal to power digital processors such as FPGAs, ASICs, and DSPs. It also includes comprehensive protection features including over current limiting, short circuit protection, and over-temperature protection.

The SQ24303C is fully specified over the temperature range of TJ = −40°C to 125°C, and is available in a compact QFN 3.5×3.5-20 package.