The ADP7104ARDZ-5.0-R7 is a CMOS, low dropout linear regulator that operates from 3.3 V to 20 V and provides up to 500 mA of output current. This high input voltage LDO is ideal for regulation of high performance analog and mixed signal circuits operating from 19 V to 1.22 V rails. Using an advanced proprietary architecture, it provides high power supply rejection, low noise, and achieves excellent line and load transient response with just a small 1 μF ceramic output capacitor.
The ADP7104ARDZ-5.0-R7 is available in seven fixed output voltage options and an adjustable version, which allows output voltages that range from 1.22 V to VIN − VDO via an external feedback divider.
The ADP7104ARDZ-5.0-R7 output noise voltage is 15 μV rms and is independent of the output voltage. A digital power-good output allows power system monitors to check the health of the output voltage. A user programmable precision undervoltage lockout function facilitates sequencing of multiple power supplies.
The ADP7104ARDZ-5.0-R7 is available in 8-lead, 3 mm × 3 mm LFCSP and 8-lead SOIC packages. The LFCSP offers a very compact solution and also provides excellent thermal performance for applications requiring up to 500 mA of output current in a small, low-profile footprint.
Feature
Input voltage range: 3.3 V to 20 V
Maximum output current: 500 mA
Low Noise: 15 μV rms for fixed output versions
PSRR Performance of 60 dB at 10 kHz, VOUT = 3.3 V
Reverse current protection
Low dropout voltage: 350 mV at 500 mA
Initial accuracy: ±0.8%
Accuracy over line, load, and temperature
−2% to +1%, TJ = −40°C to +125°C
−1.25% to +1%, TJ = 0°C to +85°C
Low quiescent current (VIN = 5 V), IGND = 900 μA with 500 mA load
Low shutdown current: <40 μA at VIN = 12 V, stable with small 1 μF ceramic output capacitor
7 fixed output voltage options: 1.5 V, 1.8 V, 2.5 V, 3 V, 3.3 V, 5 V, and 9 V
Adjustable output from 1.22 V to VIN − VDO
Foldback current limit and thermal overload protection
User programmable precision UVLO/enable
Power-good indicator
8-lead LFCSP and 8-lead SOIC packages
Applications
Regulation to noise sensitive applications: ADC, DAC circuits,precision amplifiers, high frequency oscillators, clocks, andPLLs
Communications and infrastructure
Medical and healthcare
Industrial and instrumentation
Catalogue
FPGA / CPLD
Memory
MOS 
MCU 
DSP
OCEP
Secondary 
Other 
