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LM3671-Q1 Datenblatt(PDF) 1 Page - Texas Instruments |
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LM3671-Q1 Datenblatt(HTML) 1 Page - Texas Instruments |
1 / 36 page 1 2 5 4 3 VIN SW FB EN GND L1: 2.2 2H VOUT COUT 10 2F CIN 4.7 2F LM3671 VIN 2.7V to 5.5V 1 2 5 4 3 VIN SW FB EN GND L1: 2.2 2H VOUT COUT 10 2F CIN 4.7 2F LM3671- ADJ VIN 2.7V to 5.5V R1 R2 C1 C2 Product Folder Sample & Buy Technical Documents Tools & Software Support & Community LM3671, LM3671-Q1 SNVS294R – NOVEMBER 2004 – REVISED NOVEMBER 2014 LM3671/-Q1 2-MHz, 600-mA Step-Down DC-DC Converter 1 Features 3 Description The LM3671 step-down DC-DC converter is 1 • 16-µA Typical Quiescent Current optimized for powering low voltage circuits from a • 600-mA Maximum Load Capability single Li-Ion cell battery and input voltage rails from • 2-MHz PWM Fixed Switching Frequency (Typ.) 2.7 V to 5.5 V. It provides up to 600-mA load current, over the entire input voltage range. There are several • Automatic PFM/PWM Mode Switching different fixed voltage output options available as well • Internal Synchronous Rectification for High as an adjustable output voltage version range from Efficiency 1.1 V to 3.3 V. • Internal Soft Start The device offers superior features and performance • 0.01-µA Typical Shutdown Current for mobile phones and similar portable systems. • Operates from a Single Li-Ion Cell Battery Automatic intelligent switching between PWM low- noise and PFM low-current mode offers improved • Only Three Tiny Surface-Mount External system control. During PWM mode, the device Components Required (One Inductor, Two operates at a fixed-frequency of 2 MHz (typ.). Ceramic Capacitors) Hysteretic PFM mode extends the battery life by • Current Overload and Thermal Shutdown reducing the quiescent current to 16 µA (typ.) during Protection light load and standby operation. Internal synchronous rectification provides high efficiency • Available in Fixed Output Voltages and Adjustable during PWM mode operation. In shutdown mode, the Version device turns off and reduces battery consumption to • LM3671-Q1 is an AEC-Q100 Grade 1 Qualified 0.01 µA (typ.). Automotive Grade Product A high-switching frequency of 2 MHz (typ.) allows use of tiny surface-mount components. Only three 2 Applications external surface-mount components, an inductor, and • Mobile Phones two ceramic capacitors, are required. • PDAs Device Information(1) • MP3 Players PART NUMBER PACKAGE BODY SIZE • W-LAN LM3671 USON (6) 2.00 mm x 2.00 mm (NOM) • Portable Instruments SOT-23 (5) 2.90 mm x 1.60 mm (NOM) LM3671 • Digital Still Cameras LM3671-Q1 DSBGA (5) 1.413 mm x 1.083 mm (MAX) • Portable Hard Disk Drives (1) For all available packages, see the orderable addendum at • Automotive the end of the datasheet. Typical Application Circuit: Fixed-Voltage Typical Application Circuit: ADJ 1 An IMPORTANT NOTICE at the end of this data sheet addresses availability, warranty, changes, use in safety-critical applications, intellectual property matters and other important disclaimers. PRODUCTION DATA. |
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