Datenblatt-Suchmaschine für elektronische Bauteile |
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LM3691TL-1.0 Datenblatt(PDF) 1 Page - Texas Instruments |
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LM3691TL-1.0 Datenblatt(HTML) 1 Page - Texas Instruments |
1 / 29 page OUTPUT CURRENT (mA) 100 80 60 40 20 0 0.1 1 10 100 1000 VIN = 3.6V VIN = 2.3V VIN = 4.2V LM3691 EN B2 GND MODE A2 VIN VOUT COUT IN A1 SW C1 FB 2.3 V to 5.5 V CIN C2 B1 Product Folder Sample & Buy Technical Documents Tools & Software Support & Community LM3691 SNVS506J – MAY 2008 – REVISED DECEMBER 2015 LM3691 High-Accuracy, Miniature 1-A Step-Down DC-DC Converter for Portable Applications 1 Features 3 Description The LM3691 step-down DC-DC converter is 1 • Input Voltage: 2.3 V to 5.5 V optimized for powering ultra-low-voltage circuits from • Output Voltage: 0.75 V to 3.3 V a single Li-Ion cell or 3 cell NiMH/NiCd batteries. It • ±1% DC Output Voltage Precision provides up to 1-A load current over an input voltage range from 2.3 V to 5.5 V. There are several different • 4-MHz Switching Frequency fixed voltage output options available. • 64- μA (typical) Quiescent Current in ECO Mode The LM3691 has a mode-control pin that allows the • 1-A Maximum Load Capability user to select Forced PWM mode or ECO mode that • Automatic ECO/PWM Mode Switching changes modes between gated PWM mode and • MODE Pin to Select ECO/Forced PWM Mode PWM automatically, depending on the load. In ECO mode, the device offers superior efficiency and very • Current Overload and Thermal Shutdown low IQ under light load conditions. ECO mode extends Protections the battery life through reduction of the quiescent • Only Three Tiny Surface-Mount External current during light load conditions and system Components Required (Solution Size Less Than standby. 15 mm2) The LM3691 is available in a 6-pin DSBGA package. Only three external surface-mount components, a 2 Applications 1- μH inductor, a 4.7-μF input capacitor, and a 4.7-μF • Mobile Phones output capacitor, are required. • Hand-Held Radios Device Information(1) • MP3 Players PART NUMBER PACKAGE BODY SIZE (MAX) • Portable Hard Disk Drives LM3691 DSBGA (6) 1.59 mm × 1.295 mm (1) For all available packages, see the orderable addendum at the end of the data sheet. Typical Application Circuit Efficiency vs. Output Current (VOUT = 1.8 V, ECO Mode) 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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