DatasheetsPDF.com

ADP3050

Analog Devices
Part Number ADP3050
Manufacturer Analog Devices
Description 1A High Voltage Step-Down Switching Regulator
Published Mar 23, 2005
Detailed Description a FEATURES Wide Input Voltage Range: 3.6 V to 30 V Adjustable and Fixed (3.3 V, 5 V) Output Options Integrated 1 A Power...
Datasheet PDF File ADP3050 PDF File

ADP3050
ADP3050

Overview
a FEATURES Wide Input Voltage Range: 3.
6 V to 30 V Adjustable and Fixed (3.
3 V, 5 V) Output Options Integrated 1 A Power Switch Uses Small Surface-Mount Components Cycle-By-Cycle Current Limiting Peak Input Voltage (100 ms): 60 V Thermally Enhanced 8-Lead SOIC Package Configurable as a Buck, Buck-Boost and SEPIC Regulator APPLICATIONS Industrial Power Systems PC Peripheral Power Systems Preregulator for Linear Regulators Distributed Power Systems Automotive Systems Battery Chargers 200 kHz, 1 A High-Voltage Step-Down Switching Regulator ADP3050 FUNCTIONAL BLOCK DIAGRAM BIAS IN CURRENT SENSE AMPLIFIER SD GND 2.
5V REGULATOR FREQUENCY AND CURRENT LIMIT FOLDBACK CURRENT LIMIT + 200kHz OSCILLATOR BOOST CMP S R gm Q DRIVER SWITCH FB 1.
2V ADP3050 COMP GENERAL DESCRIPTION The ADP3050 is a current-mode monolithic buck (step-down) PWM switching regulator that contains a high current 1 A power switch and all control, logic, and protection functions.
It uses a unique compensation scheme that allows the use of any type of output capacitor (tantalum, ceramic, electrolytic, OS-CON).
Unlike some buck regulators, the design is not restricted to using a specific type of output capacitor or ESR value.
A special boosted drive stage is used to saturate the NPN power switch, providing a system efficiency higher than conventional bipolar buck switchers.
Further efficiency improvements are obtained by using the low voltage regulated output to provide the device's internal operating current.
A high switching frequency allows the use of small external surface-mount components.
A wide variety of standard off-the-shelf devices can be used, providing a great deal of design flexibility.
A complete regulator design requires only a few external components.
The ADP3050 includes a shutdown input that places the device in a low-power mode, reducing the total supply current to under 20 µA.
Internal protection features include thermal shutdown circuitry and a cycle-by-cycle current-limit ...


Similar Datasheet


@ 2014 :: Datasheetspdf.com :: Semiconductors datasheet search & download site. (Privacy Policy & Contact)