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MAX4373FEUA Datasheet(PDF) 1 Page - Maxim Integrated Products |
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MAX4373FEUA Datasheet(HTML) 1 Page - Maxim Integrated Products |
1 / 12 page For free samples and the latest literature, visit www.maxim-ic.com or phone 1-800-998-8800. For small orders, phone 1-800-835-8769. General Description The MAX4373/MAX4374/MAX4375 low-cost, micropow- er, high-side current-sense supervisors contain a high- side current-sense amplifier, bandgap reference, and comparator with latching output. They feature a voltage output that eliminates the need for gain-setting resistors, making them ideal for today’s notebook computers, cell phones, and other systems where battery/DC current monitoring is critical. High-side current monitoring is especially useful in battery-powered systems since it does not interfere with the ground path of the battery charger. The 0 to +28V input common-mode range is independent of the supply voltage, which ensures that the current-sense feedback remains viable even when connected to a battery pack in deep discharge. The comparator output of the MAX4373/MAX4374/ MAX4375 is latched to provide a turn-off flag that doesn’t oscillate. In addition, the MAX4374/MAX4375 contain a second comparator for use in window-detec- tion functions. The MAX4373/MAX4374/MAX4375 are available in three different gain versions (T = +20V/V, F = +50V/V, H = +100V/V) and use an external sense resistor to set the sensitivity of the input voltage to the load current. These features offer a high level of inte- gration, resulting in a simple and compact current- sense solution. The MAX4373/MAX4374/MAX4375 operate from a sin- gle +2.7V to +28V supply and consume 50µA. They are specified for the extended operating temperature range (-40°C to +85°C) and are available in 8-pin and 10-pin µMAX packages. ________________________Applications Notebook Computers Portable/Battery-Powered Systems Smart Battery Packs/Chargers Cell Phones Power-Management Systems General-System/Board-Level Current Monitoring Precision Current Sources Features o Current-Sense Amplifier plus Internal Comparator and Bandgap Reference o 50µA Supply Current o Single +2.7V to +28V Operating Supply o 0.66% Full-Scale Accuracy o Internal Bandgap Reference o Latching Comparator Output o Three Gain Versions Available (+20V/V, +50V/V, +100V/V) o Wide 0 to +28V Common-Mode Range, Independent of Supply Voltage Low-Cost, Micropower, High-Side Current-Sense Amplifier + Comparator + Reference ICs ________________________________________________________________ Maxim Integrated Products 1 MAX4373 RS- RS+ OUT CIN LOAD/ BATTERY VCC = 2.7V TO 28V VIN = 0 TO 28V GND VCC RSENSE + VSENSE - ILOAD VPULL-UP = 5V R3 COUT C1 0.1 µF R2 R1 RESET Typical Operating Circuit 19-1630; Rev 0; 3/00 Pin Configurations appear at end of data sheet. 8 SO 8 µMAX PIN- PACKAGE TEMP. RANGE -40°C to +85°C -40°C to +85°C MAX4373TESA MAX4373TEUA PART +20 +20 GAIN (V/V) 8 µMAX -40°C to +85°C MAX4373FEUA +50 8 SO -40°C to +85°C MAX4373FESA +50 8 µMAX -40°C to +85°C MAX4373HEUA +100 8 SO -40°C to +85°C MAX4373HESA +100 Ordering Information continues at end of data sheet. Ordering Information |
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