LM3671MF-ADJ
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FEATURES andnbsp;
andbull; 16andmicro;ATypical Quiescent Current
andbull; 600mAMaximumLoad Capability
andbull; 2MHzPWMFixedSwitching Frequency (typ.)
andbull; Automatic PFM/PWM Mode Switching
andbull; Internal Synchronous Rectification for High Efficiency
andbull; Internal Soft start
andbull; 0.01 andmicro;A Typical Shutdown Current
andbull; Operates from a Single Li-Ion Cell Battery
andbull; Only Three Tiny Surface-Mount External Components Required (One Inductor, Two Ceramic Capacitors)
andbull; Current Overload and Thermal Shutdown Protection
andbull; Available in Fixed Output Voltages and Adjustable Version
andbull; LM3671Q is an Automotive Grade Product that is AEC-Q100 Grade 1 Qualified
andbull; SOT-23, 5-Bump DSBGA and 6-Pin USON Packages
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APPLICATIONS
andbull; Mobile Phones
andbull; PDAs
andbull; MP3Players
andbull; W-LAN
andbull; Portable Instruments
andbull; Digital Still Cameras
andbull; Portable Hard Disk Drives
andbull; Automotive
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DESCRIPTION
The LM3671 step-down DC-DC converter is optimized for powering low voltage circuits from a single Li-Ion cell battery and input voltage rails from 2.7V to 5.5V. It provides up to 600 mA load current, over the entire input voltage range. There are several different fixed voltage output options available as well as an adjustable output voltage version range from 1.1V to 3.3V.
The device offers superior features and performance for mobile phones and similar portable systems. Automatic intelligent switching between PWM low 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 andmicro;A (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 andmicro;A (typ.).
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Information
| Category | | |
| Mfr | | |
| Series | | |
| Packaging | Tape andamp; Reel (TR)andnbsp; Cut Tape (CT)andnbsp; Digi-Reelandnbsp; | |
| Part Status | | |
| Function | | |
| Output Configuration | | |
| Topology | | |
| Output Type | | |
| Number of Outputs | | |
| Voltage - Input (Min) | | |
| Voltage - Input (Max) | | |
| Voltage - Output (Min/Fixed) | | |
| Voltage - Output (Max) | | |
| Current - Output | | |
| Frequency - Switching | | |
| Synchronous Rectifier | | |
| Operating Temperature | -40anddeg;C ~ 85anddeg;C (TA) | |
| Mounting Type | | |
| Package / Case | | |
| Supplier Device Package | | |
| Base Product Number | |
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Drawing
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LM3671MF-ADJ 1MHz Adjustable Buck Converter 2.7-5.5V Input 600mA Output SOT-23-5 90% Efficiency -40°C to +85°C Images
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