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LTC7821 Datasheet(PDF) 1 Page - Analog Devices |
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LTC7821 Datasheet(HTML) 1 Page - Analog Devices |
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1 / 19 page  Data Sheet LT7826 Fully Integrated 17V/8A Switched Capacitor 2:1 Converter Configurable as a Voltage Divider, Doubler, or Inverter Rev. 0 DOCUMENT FEEDBACK One Analog Wa y, Wilmington, MA 01887 -2356, U.S.A. Tel: 781.329.47 00 TECHNICAL SUPPORT ©202 5 Analog Devices, Inc. All rights reserved. FEATURES Wide VHIGH/VLOW Voltage Range from 0V/0V to 17V/8.5V with a Startup Voltage of 3.45V Maximum Output Current 8A as a Voltage Divider Low Quiescent Current of 4µA at Shutdown Over 97% Peak Efficiency Standalone Voltage Divider (2:1), Doubler (1:2), Inverter (1:-1) Conversion Soft Startup into Steady-State Operation Inrush Current Limit and Overcurrent Protection Parallel Operation for Higher Output Power Integrated Bootstrap Diodes Available in a 3mm x 3mm LFCSP Package APPLICATIONS Battery System Applications Portable Consumer Electronics Industrial Applications GENERAL DESCRIPTION The LT®7826 is a fully integrated monolithic DC-to-DC converter. It achieves very high efficiency with a switched capacitor architecture in applications with an input-to-output voltage ratio of 2:1 (divider), 1:2 (doubler), or 1:1 (inverter). The LT7826 can handle a maximum voltage of 17V and provide a maximum output current of 8A, with fault protection. It features integrated bootstrap diodes and provides a compact and cost-effective solution for battery applications requiring current limit protection. The LT7826 operates at a fixed 500kHz switching frequency, while synchronization is available through the MODE pin for frequency tuning and interleave operation. The part is available in a 3mm x 3mm LFCSP package. TYPICAL APPLICATION Figure 1. High-Efficiency 2:1 Voltage Divider Figure 2. Efficiency vs. Load Current 2:1 Voltage Divider RUN MODE FAULT SGND SWH INTVCC PGND LT7826 VHIGH BSTH SWL BSTL FLV VLOW VOUT = VIN/2 G1 G2 G3 G4 0.1µF 4.7µF CFLY 10µF x10 VIN 0.1µF 0.1µF 10µF ×10 VVHIGH = 15V VVHIGH = 7.4V LOAD CURRENT (A) 0 1 2 3 4 5 6 7 8 90 91 92 93 94 95 96 97 98 99 100 |
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