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LM3102 Datasheet(PDF) 1 Page - Texas Instruments |
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LM3102 Datasheet(HTML) 1 Page - Texas Instruments |
1 / 30 page Product Folder Sample & Buy Technical Documents Tools & Software Support & Community LM3102, LM3102-Q1 SNVS515H – SEPTEMBER 2007 – REVISED JUNE 2015 LM3102/-Q1 SIMPLE SWITCHER® Synchronous 1-MHz, 2.5-A Step-Down Voltage Regulator 1 Features • Storage Systems • Broadband Infrastructure 1 • LM3102-Q1 is an Automotive-Grade Product that is AEC-Q100 Grade 1 Qualified (–40°C to +125°C • Direct Conversion from 2-, 3-, and 4-Cell Lithium Operating Junction Temperature) Batteries Systems • Low Component Count and Small Solution Size 3 Description • Stable With Ceramic and Other Low-ESR The LM3102/-Q1 SIMPLE SWTCHER® Capacitors Synchronously Rectified Buck Converter features all • No Loop Compensation Required required functions to implement a highly efficient and • High Efficiency at a Light Load by DCM Operation cost-effective buck regulator. The device can supply 2.5 A to loads with an output voltage as low as 0.8 V. • Prebias Start-Up Dual N-channel synchronous MOSFET switches • Ultra-Fast Transient Response allow a low component count, thus reducing • Programmable Soft-Start complexity and minimizing board size. • Programmable Switching Frequency up to 1 MHz Different from most other COT regulators, the • Valley Current Limit LM3102/-Q1 does not rely on output capacitor ESR for stability, and is designed to work exceptionally • Output Overvoltage Protection well with ceramic and other very low-ESR output • Precision Internal Reference for an Adjustable capacitors. The device requires no loop Output Voltage Down to 0.8 V compensation, results in a fast load transient • Thermal Shutdown response and simple circuit implementation. The operating frequency remains nearly constant with line • Key Specifications variations due to the inverse relationship between the – Input Voltage Range 4.5 V to 42 V input voltage and the ON-time. The operating – 2.5-A Output Current frequency can be externally programmed up to – 0.8 V, ±1.5% Reference 1 MHz. Protection features include VCC undervoltage lockout (UVLO), output overvoltage protection, – Integrated Dual N-Channel Main and thermal shutdown, and gate drive UVLO. The Synchronous MOSFETs LM3102/-Q1 is available in the thermally enhanced – Thermally Enhanced HTSSOP-20 Package HTSSOP-20 package, and LM3102 is also available in a DSBGA low-profile chip-scale package with 2 Applications reduced output current. • 5-VDC, 12-VDC, 24-VDC, 12-VAC, and 24-VAC Device Information(1) Systems PART NUMBER PACKAGE BODY SIZE (NOM) • Embedded Systems and Industrial Control LM3102 DSBGA (28) 3.645 mm × 2.45 mm • Automotive Telematics and Body Electronics LM3102 HTSSOP (20) 6.50 mm × 4.40 mm • Point of Load Regulators LM3102-Q1 (1) For all available packages, see the orderable addendum at the end of the data sheet. Typical Application Schematic Efficiency vs Load Current (VOUT = 3.3 V) 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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