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LM3526M-L bảng dữ liệu(PDF) 1 Page - Texas Instruments |
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LM3526M-L bảng dữ liệu(HTML) 1 Page - Texas Instruments |
1 / 18 page LM3526 www.ti.com SNVS054E – FEBRUARY 2000 – REVISED MARCH 2013 LM3526 Dual Port USB Power Switch and Over-Current Protection Check for Samples: LM3526 1 FEATURES DESCRIPTION The LM3526 provides Universal Serial Bus standard 2 • Compatible with USB1.1 and USB 2.0 power switch and over-current protection for all host • 1 ms Fault Flag Delay Filters Hot-Plug Events port applications. The dual port device is ideal for • Smooth Turn-on Eliminates In-rush Induced Notebook and desktop PC's that supply power to Voltage Drop more than one port. • UL Recognized Component: REF# 205202 A 1 ms delay on the fault flag output prevents erroneous overcurrent reporting caused by in-rush • 1A Nominal Short Circuit Output Current currents during hot-plug events. Protects PC Power Supplies • Thermal Shutdown Protects Device in Direct The dual stage thermal protection circuit in the Short Condition LM3526 provides individual protection to each switch and the entire device. In a short-circuit/over-current • 500mA Minimum Continuous Load Current event, the switch dissipating excessive heat is turned • Small SOIC-8 package minimizes board space off, allowing the second switch to continue to function • 2.7V to 5.5V Input Voltage Range uninterrupted. • 140 m Ω Max. Switch Resistance The LM3526 accepts an input voltage between 2.7V • 1 µA Max. Standby Current and 5.5V allowing use as a device-based in-rush current limiter for 3.3V USB peripherals, as well as • 200 µA Max. Operating Current Root and Self-Powered Hubs at 5.5V. The Enable • Under-voltage Lockout (UVLO) inputs accept both 3.3V and 5.0V logic thresholds. The small size, low RON, and 1 ms fault flag delay APPLICATIONS make the LM3526 a good choice for root hubs as well • Universal Serial Bus (USB) Root Hubs as per-port power control in embedded and stand- including Desktop and Notebook PC alone hubs. • USB Monitor Hubs • Other Self-Powered USB Hub Devices • High Power USB Devices Requiring In-rush Limiting • General Purpose High Side Switch Applications 1 Please be aware that an important notice concerning availability, standard warranty, and use in critical applications of Texas Instruments semiconductor products and disclaimers thereto appears at the end of this data sheet. 2 All trademarks are the property of their respective owners. PRODUCTION DATA information is current as of publication date. Copyright © 2000–2013, Texas Instruments Incorporated Products conform to specifications per the terms of the Texas Instruments standard warranty. Production processing does not necessarily include testing of all parameters. |
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