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LM25011 データシート(PDF) 1 Page - Texas Instruments |
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LM25011 データシート(HTML) 1 Page - Texas Instruments |
1 / 29 page FB SW L1 RFB2 LM25011 BST CBST D1 CS RT VIN 6V to 42V Input CIN SS CSS RT SGND PGD CSG RS RPGD VPGD COUT RFB1 VOUT Power Good Product Folder Sample & Buy Technical Documents Tools & Software Support & Community LM25011, LM25011-Q1, LM25011A, LM25011A-Q1 SNVS617H – APRIL 2009 – REVISED NOVEMBER 2014 LM25011, LM25011-Q1, LM25011A, LM25011A-Q1 42-V 2-A Constant On-Time Switching Regulator With Adjustable Current Limit 1 Features 3 Description The LM25011 constant on-time step-down switching 1 • LM25011-Q1 is an Automotive Grade Product that regulator features all the functions needed to is AEC-Q100 Grade 1 Qualified (–40°C to +125°C implement a low-cost, efficient, buck bias regulator Operating Junction Temperature) capable of supplying up to 2 A of load current. This • LM25011A Allows Low-Dropout Operation at High high-voltage regulator contains an N-Channel Buck Switching Frequency switch, a startup regulator, current limit detection, and internal ripple control. The constant on-time • Input Operating Voltage Range: 6 V to 42 V regulation principle requires no loop compensation, • Absolute Maximum Input Rating: 45 V results in fast load transient response, and simplifies • Integrated 2-A N-Channel Buck Switch circuit implementation. The operating frequency • Adjustable Current Limit Allows for Smaller remains constant with line and load. The adjustable valley current limit detection results in a smooth Inductor transition from constant voltage to constant current • Adjustable Output Voltage from 2.51 V mode when current limit is reached, without the use • Minimum Ripple Voltage at VOUT of current limit foldback. The PGD output indicates • Power Good Output the output voltage has increased to within 5% of the expected regulation value. Additional features • Switching Frequency Adjustable to 2 MHz include: Low output ripple, VIN under-voltage lock- • COT Topology Features: out, adjustable soft-start timing, thermal shutdown, – Switching Frequency Remains Nearly gate drive pre-charge, gate drive under-voltage lock- Constant with Load Current and Input Voltage out, and maximum duty cycle limit. Variations The LM25011A has a shorter minimum off-time than – Ultra-Fast Transient Response the LM25011, which allows for higher frequency operation at low input voltages. – No Loop Compensation Required – Stable Operation with Ceramic Output Device Information(1) Capacitors PART NUMBER PACKAGE BODY SIZE (NOM) – Allows for Smaller Output Capacitor and LM25011 / -Q1 Current Sense Resistor HVSSOP (10) 3.00 mm × 3.00 mm LM25011A / -Q1 • Adjustable Soft-Start Timing (1) For all available packages, see the orderable addendum at • Thermal Shutdown the end of the data sheet. • Precision 2% Feedback Reference Typical Application • Package: 10-Pin, HVSSOP 2 Applications • Automotive Safety • Infotainment • Telecommunication • Front Camera 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. |
同様の部品番号 - LM25011_15 |
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同様の説明 - LM25011_15 |
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