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LT8610 Datasheet(PDF) 1 Page - Linear Technology |
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LT8610 Datasheet(HTML) 1 Page - Linear Technology |
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1 / 22 page  LT8610 1 8610fa For more information www.linear.com/LT8610 TYPICAL APPLICATION FEATURES DESCRIPTION 42V, 2.5A Synchronous Step-Down Regulator with 2.5µA Quiescent Current The LT®8610 is a compact, high efficiency, high speed synchronous monolithic step-down switching regulator that consumes only 2.5µA of quiescent current. Top and bottom power switches are included with all necessary circuitry to minimize the need for external components. Low ripple Burst Mode operation enables high efficiency down to very low output currents while keeping the output ripple below 10mVP-P. A SYNC pin allows synchronization to an external clock. Internal compensation with peak cur- rent mode topology allows the use of small inductors and results in fast transient response and good loop stability. The EN/UV pin has an accurate 1V threshold and can be used to program VINundervoltagelockoutortoshutdown the LT8610 reducing the input supply current to 1µA. A capacitor on the TR/SS pin programs the output voltage ramp rate during start-up. The PG flag signals when VOUT is within ±9% of the programmed output voltage as well as fault conditions. The LT8610 is available in a small 16-lead MSOP package with exposed pad for low thermal resistance. 5V 2.5A Step-Down Converter 12VIN to 5VOUT Efficiency APPLICATIONS n Wide Input Voltage Range: 3.4V to 42V n Ultralow Quiescent Current Burst Mode® Operation: 2.5μA IQ Regulating 12VIN to 3.3VOUT Output Ripple < 10mVP-P n High Efficiency Synchronous Operation: 96% Efficiency at 1A, 5VOUT from 12VIN 94% Efficiency at 1A, 3.3VOUT from 12VIN n Fast Minimum Switch-On Time: 50ns n Low Dropout Under All Conditions: 200mV at 1A n Allows Use Of Small Inductors n Low EMI n Adjustable and Synchronizable: 200kHz to 2.2MHz n Current Mode Operation n Accurate 1V Enable Pin Threshold n Internal Compensation n Output Soft-Start and Tracking n Small Thermally Enhanced 16-Lead MSOP Package n Automotive and Industrial Supplies n General Purpose Step-Down n GSM Power Supplies L , LT, LTC, LTM, Burst Mode, Linear Technology and the Linear logo are registered trademarks of Linear Technology Corporation. All other trademarks are the property of their respective owners. BST VIN EN/UV PG SYNC INTVCC TR/SS RT SW LT8610 GND PGND BIAS 8610 TA01a FB 0.1µF VOUT 5V 2.5A 4.7µF VIN 5.5V TO 42V 1µF 10nF 10pF 4.7µH 1M 243k fSW = 700kHz 60.4k 47µF LOAD CURRENT (A) 0 80 90 100 2 8610 G01 70 60 75 85 95 65 55 50 0.5 1 1.5 2.5 VIN = 12V VIN = 24V fSW = 700kHz |
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Similar Description - LT8610_15 |
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