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LM3495 Folha de dados(PDF) 1 Page - Texas Instruments |
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LM3495 Folha de dados(HTML) 1 Page - Texas Instruments |
1 / 36 page FB SNS FPWM PGND CSL LG ILIM SW/CSH HG BOOST CF RFB2 RFB1 CO RILIM CIN Q1 Q2 CB D1 VIN VO LM3495 SGND FREQ/SYNC COMP/SD VIN VLIN5 TRACK CDD CC RC RFRQ VLIN5 CSYNC L1 CINX LM3495 www.ti.com SNVS410F – FEBRUARY 2006 – REVISED APRIL 2013 LM3495 Emulated Peak Current Mode Buck Controller for Low Output Voltage Check for Samples: LM3495 1 FEATURES DESCRIPTION The LM3495 is a PWM buck regulator which 2 • Input Voltage from 2.9V to 18V implements a unique emulated peak current mode • Output Voltage Adjustable from 0.6V to 5.5V control. This control method eliminates the switching • Feedback Accuracy: ±1% noise which typically limits current mode operation at extremely short duty cycles and high operating • Low-Side Sensing, Programmable Current frequency. The switching frequency is programmable Limit without Sense Resistor between 200 kHz and 1.5 MHz, and can also be • Input Under Voltage Lockout synchronized to an external clock. The LM3495 is • Hiccup Mode Current Limit Protection also very fault tolerant with both switch node short, Eliminates Thermal Runaway During Fault hiccup mode, and adaptive duty cycle limit protection. A 0.6V 1% reference and glitch free pre-biased start- Conditions up ensure the most demanding digital loads operate • Internal Soft Start with Tracking Capability reliably. Internal soft start and the ability to track the • 200 kHz to 1.5 MHz Switching Frequency, output of another supply make the LM3495 versatile Synchronizable and efficient. • On-Chip Gate Drivers APPLICATIONS • Soft Output Discharge During Shutdown • Wide Input Voltage Buck Converters with Low • Startup into Output Pre-Bias Voltage, High Accuracy Outputs • Operation from a Single Input Rail • Core Logic Regulators • Adaptive Duty Cycle Limit • High-Efficiency Buck Regulation • TSSOP-16 Package Typical Application 1 Please be aware that an important notice concerning availability, standard warranty, and use in critical applications of Texas Instruments semiconductor products and disclaimers thereto appears at the end of this data sheet. 2 All trademarks are the property of their respective owners. PRODUCTION DATA information is current as of publication date. Copyright © 2006–2013, Texas Instruments Incorporated Products conform to specifications per the terms of the Texas Instruments standard warranty. Production processing does not necessarily include testing of all parameters. |
Nº de peça semelhante - LM3495_15 |
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Descrição semelhante - LM3495_15 |
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