Analog Devices Inc. ADP7104 LDO Linear Regulators
Analog Devices ADP7104 CMOS, Low Dropout (LDO), Linear Regulators operate in the 3.3V-20V input voltage range and offer up to a 500mA output current. Developed with an advanced proprietary architecture, ADP7104 regulators provide high-power supply rejection and low-noise performance. A small 1μF ceramic output capacitor gives the ADP7104 LDOs excellent line and load transient response rates.
The ADP7104 series features both fixed and adjustable output voltage versions. The fixed-voltage versions range from 1.5V to 9V and have a low noise rating of 15μVrms. The adjustable version offers an adjustable output voltage range of 1.22V to VIN − VDO.
A power-good indicator allows power monitors to check the output voltage. A programmable, precision undervoltage lockout function enables the sequencing of multiple power supplies.
The ADP7104 regulators are housed in 8-lead, 3mm × 3mm LFCSP, and 8-lead SOIC packages. The LFCSP package offers designers a compact solution with excellent thermal performance. This package is ideal for applications that require a small, low-profile footprint and up to 500mA of output current. As high-input voltage LDOs, the ADP7104 regulators are well-suited for the regulation of high-performance analog and mixed-signal circuits that operate using 19V to 1.22V rails.
Features
- Input voltage range: 3.3V to 20V
- Maximum output current: 500mA
- Low noise: 15μVrms for fixed output versions
- PSRR performance of 60dB at 10kHz, VOUT = 3.3V
- Reverse current protection
- Low dropout voltage: 350mV at 500mA
- Initial accuracy: ±0.8%
- Accuracy over line, load, and temperature: −2%/+1%
- Low quiescent current (VIN = 5V), IGND= 900μA with 500mA load
- Low shutdown current: <40μA at VIN = 12V, stable with small 1μF ceramic output capacitor
- 7 fixed output voltage options: 1.5V, 1.8V, 2.5V, 3V, 3.3V, 5V, and 9V
- Adjustable output from 1.22V 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, and PLLs
- Communications and infrastructure
- Medical and healthcare
- Industrial and instrumentation
Application Circuits
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Associated Kit
Analog Devices Inc. ADP7104x-REDYKT Kits
Designed to evaluate the fixed output voltage options in the ADP7104 LDO using two kits.