Datenblatt-Suchmaschine für elektronische Bauteile |
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ISL21440 Datenblatt(PDF) 1 Page - Intersil Corporation |
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ISL21440 Datenblatt(HTML) 1 Page - Intersil Corporation |
1 / 16 page 1 Micropower Voltage Reference with Comparator ISL21440 The ISL21440 is a micropower, FGA™ reference and comparator on a single chip. Drawing less than 1.8µA supply current over the full operating temperature range, the ISL21440 operates from a single 2V to 11V supply and can also be used with split bipolar supplies. The ISL21440’s on-board reference provides a 1.182V ±0.5% output. It features programmable hysteresis and TTL/CMOS compatible outputs that sink and source current. Low Bias currents permit high value divider resistors for typical circuit current drains of <2.5µA. The low supply current makes the ISL21440 ideal for battery powered devices in battery level or low voltage monitors circuits. The ISL21440 is a pin-compatible, performance upgrade of both the LTC1440, LTC1540, MAX921 and MAX931. Features • 1.8µA Supply Current Over Full Temperature Range • Wide Supply Range . . . . . . . . . . . . . . . . . . . . . . . . . . 2V to 11V • Precision 1.182V ±0.5% Voltage Reference • Comparator with User Programmable Hysteresis • Temperature Range . . . . . . . . . . . . . . . . . . . .-40°C to +125°C • 8 Ld MSOP and 8 Ld TDFN Packages • Pin Compatible Upgrade to MAX921 and LTC1440 Applications •Low Battery Detector •Low Voltage Reset •Overvoltage Monitor • Window Comparator FIGURE 1. TYPICAL APPLICATION FIGURE 2. REFERENCE VOLTAGE vs TEMPERATURE V+ OUT IN- HYST GND V- REF IN+ ISL21440 - + VBAT Vdd 2.4M 20k LoBAT- 2.4M 1.8M LOW BATTERY DETECTOR 1.172 1.174 1.176 1.178 1.180 1.182 1.184 1.186 1.188 1.190 -40 -20 0 20 406080 100 120 TEMPERATURE (°C) V+ = 5V V+ = 2V V+ = 3V February 23, 2011 FN6532.2 CAUTION: These devices are sensitive to electrostatic discharge; follow proper IC Handling Procedures. 1-888-INTERSIL or 1-888-468-3774 |Copyright Intersil Americas Inc. 2009-2011. All Rights Reserved Intersil (and design) is a trademark owned by Intersil Corporation or one of its subsidiaries. All other trademarks mentioned are the property of their respective owners. |
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