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LM3671MF-3.3 Datasheet(PDF) 1 Page - Texas Instruments |
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LM3671MF-3.3 Datasheet(HTML) 1 Page - Texas Instruments |
1 / 39 page 1 2 5 4 3 VIN SW FB EN GND L1: 2.2 PH VOUT COUT 10 PF CIN 4.7 PF LM3671 VIN 2.7V to 5.5V LM3671 LM3671Q www.ti.com SNVS294P – NOVEMBER 2004 – REVISED MAY 2013 LM3671, LM3671Q 2MHz, 600mA Step-Down DC-DC Converter Check for Samples: LM3671, LM3671Q 1 FEATURES APPLICATIONS 2 • 16 µA Typical Quiescent Current • Mobile Phones • 600 mA Maximum Load Capability • PDAs • 2 MHz PWM Fixed Switching Frequency (typ.) • MP3 Players • Automatic PFM/PWM Mode Switching • W-LAN • Internal Synchronous Rectification for High • Portable Instruments Efficiency • Digital Still Cameras • Internal Soft start • Portable Hard Disk Drives • 0.01 µA Typical Shutdown Current • Automotive • Operates from a Single Li-Ion Cell Battery DESCRIPTION • Only Three Tiny Surface-Mount External The LM3671 step-down DC-DC converter is Components Required (One Inductor, Two optimized for powering low voltage circuits from a Ceramic Capacitors) single Li-Ion cell battery and input voltage rails from • Current Overload and Thermal Shutdown 2.7V to 5.5V. It provides up to 600 mA load current, Protection over the entire input voltage range. There are several • Available in Fixed Output Voltages and different fixed voltage output options available as well Adjustable Version as an adjustable output voltage version range from 1.1V to 3.3V. • LM3671Q is an Automotive Grade Product that is AEC-Q100 Grade 1 Qualified The device offers superior features and performance for mobile phones and similar portable systems. • SOT-23, 5-Bump DSBGA and 6-Pin USON Automatic intelligent switching between PWM low- Packages noise and PFM low-current mode offers improved system control. During PWM mode, the device operates at a fixed-frequency of 2 MHz (typ.). Hysteretic PFM mode extends the battery life by reducing the quiescent current to 16 µA (typ.) during light load and standby operation. Internal synchronous rectification provides high efficiency during PWM mode operation. In shutdown mode, the device turns off and reduces battery consumption to 0.01 µA (typ.). TYPICAL APPLICATION CIRCUITS Figure 1. Typical Application Circuit 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 © 2004–2013, 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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