Features

• Input Voltage Range

– Without BIAS: 1.4 V to 6.5 V

– With BIAS: 1.1 V to 6.5 V

• Output Voltage Options:

– Fixed Output Voltage: 0.8 V to 3.95 V

– Adjustable Output Voltage: 0.8 V to 5.2 V

• ±1% Output Accuracy over Line Regulation, Load

Regulation, and Operating Temperature Range With

BIAS

• 3-A Maximum Output Current

• Low Dropout Voltage: 300 mV Maximum at 3 A

• High PSRR:

– 65 dB at 1 kHz

– 30 dB at 1 MHz

• 4-μVRMSOutput Voltage Noise

• Excellent Transient Response

• Enable and Adjustable Soft-Start Control

• Open-Drain Power-Good (PG) Output

• Stable with 22-μF or Greater Ceramic Output Capacitor

• Over-Current Protection

• Over-Temperature Protection

• Operating Temperature Range: –40°C to +125°C

• Package Options:

– QFN3.5X3.5-20

Applications

• Wireless Communication: CPU, ASIC, FPGA, CPLD,

DSP

• High-Performance Analog: ADC, DAC, LVDS, VCO

• Noise-Sensitive Imaging: CMOS Sensors, Video ASICs

Description

The TPL9308 is a 3-A high-current, 4-μVRMS low-noise,

high-PSRR, high-accuracy linear regulator with maximum

300-mV ultra-low dropout voltage at 3-A load condition.

The TPL9308 supports both fixed output voltage ranging

from 0.8 V to 3.95 V and adjustable output voltage ranging

from 0.8 V to 5.2 V with an external resistor dividers.

Ultra-low noise, high PSRR, and high-output-current

capabilities make the TPL9308 an ideal power supply

for noise-sensitive applications, such as high-speed

communication facilities, test and measurement devices,

or high-definition imaging equipment. Accurate output

voltage tolerance, output voltage remote sensing, excellent

transient response, and adjustable soft-start control ensure

the TPL9308 an optimal power supply for the large-scale

processors and digital loads, such as ASIC, FPGA, CPLD,

and DSP.

The TPL9308 provides a 20-pin QFN3.5X3.5 package with

guaranteed operating junction temperature ranging (TJ)

from −40°C to +125°C.