“ADI’s newest LDOs are specially designed for noise-sensitive, high-performance loads typical of A/D and D/A converters, DSPs, FPGAs, precision amplifiers, high-frequency clocks, oscillators and PLL circuits,” said Laurence McGarry, marketing manager, Power Management Products Group, Analog Devices. “This improved load performance can enable higher converter frequency and accuracy, which in a medical ultrasound system, for example, can mean high image resolution.”
The new LDOs operate from 3.3 V to 20 V and are designed to regulate high-performance analog and mixed-signal circuits operating from 19 V to 1.22 V rails while achieving excellent line and load
transient response with just a small 1-μF ceramic output. The ADP7102 has a maximum output current of 500 mA, while the maximum output current of the ADP7104 is 300 mA. Both LDOs are available in an 8-lead SOIC-EP and a space saving 3-mm x 3-mm LFCSP package that provides excellent thermal performance for applications requiring up to 300 mA of output current in a small, low-profile footprint.
ADP7102 and ADP7104 LDO Key Features
• Input voltage range: 3.3 V to 20 V
• Maximum output current:
o ADP7102 = 300 mA
o ADP7104 = 500 mA
• Low Noise: 15 μVRMS for fixed output versions
• PSRR = 60 dB @ 10 kHz at VOUT = 3.3 V
• Reverse current protection
• Low dropout voltage:
o ADP7102 = 200 mV at 300 mA load
o ADP7104 = 280 mV @ 500 mA load
• Stable with small 1-μF ceramic output capacitor
• 7 fixed output voltage options: 1.5, 1.8, 2.5, 3, 3.3, 5, 9 V