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ADP1073 データシート(PDF) 1 Page - Analog Devices |
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ADP1073 データシート(HTML) 1 Page - Analog Devices |
1 / 2 page To obtain the most recent version or complete data sheet, call our fax retrieval system at 1-800-446-6212 or visit our World Wide Web site at http://www.analog.com. 1 This information applies to a product under development. Its characteristics and specifications are subject to change without notice. Analog Devices assumes no obligation regarding future manufacture unless otherwise agreed to in writing. PRELIMINAR Y TECHNICAL DA TA a ADP1073 Micropower DC-DC Converter Adjustable and Fixed 5 V, 12 V GENERAL DESCRIPTION The ADP1073 is part of a family of step-up/step-down switch- ing regulators which operates from an input supply voltage of as little as 1.0 V. This extremely low input voltage allows the ADP1073 to be used in applications that require using a single cell battery as the primary power source. The ADP1073 can be configured to operate in either step-up or step-down mode; but for input voltages greater than 3 V, the ADP1173 is recommended. An auxiliary gain amplifier can serve as a low-battery detector or linear regulator. Quiescent current on the ADP1073-5 is only 135 µA unloaded, making it ideal for systems where long battery life is required. The ADP1073 can deliver 40 mA at 5 V from an input voltage range as low as 1.25 V, or 10 mA at 5 V from a 1.0 V input. Current limiting is available by adding an external resistor. Bat- tery protection circuitry keeps reverse currents to safe levels at reverse supply voltages of up to 1.6 V. FEATURES Operates at Supply Voltages from 1.0 V to 30 V Ground Current: 95 A Works in Step-Up or Step-Down Mode Very Few External Components Required Low-Battery Detector On Chip User-Adjustable Current Limit Internal 1 A Power Switch Fixed and Adjustable Output Voltage Versions 8-Pin DIP or SO-8 Package APPLICATIONS Single-Cell to 5 V Converters Laptop and Palmtop Computers Pagers Cameras Battery Backup Supplies Cellular Telephones Portable Instruments 4 mA–20 mA Loop Powered Instruments Hand-Held Inventory Computers Battery-Powered , , Particle Detectors FUNCTIONAL BLOCK DIAGRAM DRIVER ILIM SW1 SW2 VIN GND SET AO GAIN BLOCK/ ERROR AMP COMPARATOR A1 A2 FB 1.245V REFERENCE OSCILLATOR ADP1073 ORDERING GUIDE Output Package Package Model Voltage Description Option* ADP1073AN ADJ PDIP N-8 ADP1073AR ADJ SOIC SO-8 ADP1073AN-5 5 V PDIP N-8 ADP1073AR-5 5 V SOIC SO-8 ADP1073AN-12 12 V PDIP N-8 ADP1073AR-12 12 V SOIC SO-8 *For outline information see Package Information section. Small Outline Package (SO-8) AO ILIM SW1 GND VIN SW2 *FIXED VERSIONS 1 2 3 4 8 7 6 5 TOP VIEW (Not to Scale) ADP1073 FB (SENSE)* SET Plastic DIP Package (N-8) AO ILIM SW1 GND VIN SW2 *FIXED VERSIONS 1 2 3 4 8 7 6 5 ADP1073 TOP VIEW (Not to Scale) FB (SENSE)* SET PIN CONFIGURATIONS REV. 0 OBSOLETE |
同様の部品番号 - ADP1073_15 |
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同様の説明 - ADP1073_15 |
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