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LTC3813EG-PBF Datasheet(PDF) 1 Page - Linear Technology |
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LTC3813EG-PBF Datasheet(HTML) 1 Page - Linear Technology |
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1 / 32 page  LTC3813 1 3813fb 100V Current Mode Synchronous Step-Up Controller The LTC3813 is a synchronous step-up switching regulator controller that can generate output voltages up to 100V. The LTC3813 uses a constant off-time peak current control architecture with accurate cycle-by-cycle current limit, without requiring a sense resistor. A precise internal reference provides ±0.5% DC accuracy. A high bandwidth (25MHz) error amplifier provides very fast line and load transient response. Large 1Ω gate drivers allow the LTC3813 to drive multiple MOSFETs for higher current applications. The operating frequency is selected by an external resistor and is compensated for variations in VIN and can also be synchronized to an external clock for switching-noise sensitive applications. A shutdown pin allows the LTC3813 to be turned off, reducing the supply current to 240μA. PARAMETER LTC3813 LTC3814-5 Maximum VOUT 100V 60V MOSFET Gate Drive 6.35V to 14V 4.5V to 14V INTVCC UV+ 6.2V 4.2V INTVCC UV– 6V 4V n 24V Fan Supplies n 48V Telecom and Base Station Power Supplies n Networking Equipment, Servers n Automotive and Industrial Control Systems n High Output Voltages: Up to 100V n Large 1Ω Gate Drivers n No Current Sense Resistor Required n Dual N-Channel MOSFET Synchronous Drive n ±0.5% 0.8V Voltage Reference n Fast Transient Response n Programmable Soft-Start n Generates 10V Driver Supply from Input Supply n Synchronizable to External Clock n Power Good Output Voltage Monitor n Adjustable Off-Time/Frequency: tOFF(MIN) < 100ns n Adjustable Cycle-by-Cycle Current Limit n Programmable Undervoltage Lockout n Output Overvoltage Protection n 28-Pin SSOP Package High Efficiency High Voltage Step-Up Converter Efficiency vs Load Current TYPICAL APPLICATION FEATURES APPLICATIONS DESCRIPTION L, LT, LTC and LTM are registered trademarks of Linear Technology Corporation. All other trademarks are the property of their respective owners. Protected by U.S. Patents, including 5481178, 5847554, 6304066, 6476589, 6580258, 6677210, 6774611. PGOOD SYNC VRNG ITH VFB SGND SS 1000pF 0.01μF 100pF VIN 10V TO 40V 22μF VOUT 50V/5A IOFF VOUT 100k 500k 50k LTC3813 EXTVCC TG SW SENSE– BG BGRTN SENSE+ DRVCC INTVCC NDRV BOOST 3813 TA01 0.1μF M1 Si7850DP 10μH M2 Si7850DP 2x 1μF D1 MBR1100 30.9k 499Ω 270μF 2x SHDN + + LOAD (A) 90 95 85 80 100 3813 TA01b VIN = 12V VIN = 24V VIN = 36V 04 123 5 |
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Similar Description - LTC3813EG-PBF |
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