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ADP1712AUJZ-2.5-R71 Arkusz danych(PDF) 1 Page - Analog Devices |
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ADP1712AUJZ-2.5-R71 Arkusz danych(HTML) 1 Page - Analog Devices |
1 / 16 page 300 mA, Low Dropout CMOS Linear Regulator ADP1712/ADP1713/ADP1714 Rev. A Information furnished by Analog Devices is believed to be accurate and reliable. However, no responsibilityis assumedbyAnalogDevicesforitsuse,norforanyinfringementsof patentsorother rightsofthirdpartiesthatmayresultfromitsuse.Specificationssubjecttochangewithoutnotice.No license is granted by implication or otherwise under any patent or patent rights of Analog Devices. Trademarksandregisteredtrademarksarethepropertyoftheirrespectiveowners. One Technology Way, P.O. Box 9106, Norwood, MA 02062-9106, U.S.A. Tel: 781.329.4700 www.analog.com Fax: 781.461.3113 ©2007–2009 Analog Devices, Inc. All rights reserved. FEATURES Maximum output current: 300 mA Input voltage range: 2.5 V to 5.5 V Light load efficient IGND = 75 μA with 100 μA load Low shutdown current: <1 μA Very low dropout voltage: 170 mV @ 300 mA load Initial accuracy: ±1% Accuracy over line, load, and temperature: ±2% 16 fixed output voltage options with soft start: 0.75 V to 3.3 V (ADP1712) Adjustable output voltage option: 0.8 V to 5.0 V (ADP1712 Adjustable) 16 fixed output voltage options with reference bypass: 0.75 V to 3.3 V (ADP1713) 16 fixed output voltage options with tracking: 0.75 V to 3.3 V (ADP1714) Low output noise: 40 μV rms High PSRR: 72 dB @ 1 kHz Stable with small 2.2 μF ceramic output capacitor Excellent load/line transient response Current limit and thermal overload protection Logic controlled enable 5-lead TSOT package APPLICATIONS Mobile phones Digital camera and audio devices Portable and battery-powered equipment Post dc-dc regulation TYPICAL APPLICATION CIRCUITS IN GND EN OUT SS 1 2 3 5 4 ADP1712 2.2µF VOUT = 3.3V VIN = 5V 2.2µF 10nF Figure 1. ADP1712 with Fixed Output Voltage and Soft-Start Capacitor, 3.3 V IN GND EN OUT ADJ 1 2 3 5 4 ADP1712 ADJUSTABLE 2.2µF 2.2µF R1 R2 VOUT = 0.8V(1 + R1/R2) VIN = 5.5V Figure 2. ADP1712 with Adjustable Output Voltage, 0.8 V to 5.0 V IN GND EN OUT BYP 1 2 3 5 4 ADP1713 2.2µF 2.2µF 10nF VIN = 3V VOUT = 0.75V Figure 3. ADP1713 with Fixed Output Voltage and Bypass Capacitor, 0.75 V IN GND EN OUT TRK 1 2 3 5 4 2.2µF 2.2µF 0V TO 5V 3 2 1 0 VTRK (V) 123 45 VOUT (V) VOUT ADP1714 VIN = 3V Figure 4. ADP1714 with Output Voltage Tracking GENERAL DESCRIPTION The ADP1712/ADP1713/ADP1714, available in a tiny, 5-lead TSOT package, are low dropout linear regulators that operate from 2.5 V to 5.5 V and provide up to 300 mA of output current. The low 170 mV dropout voltage at a 300 mA load improves efficiency and allows operation over a wide input voltage range. Using a novel scaling architecture, ground current is a very low 75 μA when driving a 100 μA load, making the ADP1712/ ADP1713/ADP1714 ideal for battery-operated portable equipment. The ADP1712/ADP1713/ADP1714 are available in 16 fixed output voltage options. The ADP1712 is also available in an adjustable version, which allows output voltages that range from 0.8 V to 5 V via an external divider. The ADP1712 fixed version allows an external capacitor to be connected to program the soft-start time. The ADP1713 allows a reference bypass capacitor to be connected, which reduces output voltage noise and improves power supply rejection. The ADP1714 includes a tracking feature, which allows the output to follow an external voltage rail or reference. The ADP1712/ADP1713/ADP1714 are optimized for stable operation with small 2.2 μF ceramic output capacitors, allowing good transient performance while occupying minimal board space. An enable pin controls the output voltage on all devices, and an undervoltage lockout circuit disables the regulator if IN drops below a minimum threshold. The parts also have short circuit protection and thermal overload protection, which prevent damage to the devices in adverse conditions. |
Podobny numer części - ADP1712AUJZ-2.5-R71 |
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Podobny opis - ADP1712AUJZ-2.5-R71 |
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