LTC3814-5 Datasheet | Linear Technology

60V Current Mode Synchronous Step-Up Controller Features n High Output Voltages: Up to 60V 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 5.5V Driver Supply n Power Good Output Voltage Monitor n Adjustable Off-Time/Frequency: t OFF(MIN) < 100ns n Adjustable Cycle-by-Cycle Current Limit n Undervoltage Lockout On Driver Supply n Output Overvoltage Protection n Thermally Enhanced 16-Pin TSSOP Package APPLICATIONS n 24V Fan Supplies n 48V Tele and Base Station Power Supplies n Networking Equipment, Servers n Automotive and Industrial Control Systems DESCRIPTION The LTC3814-5 is a synchronous step-up switching regulator controller that can generate output voltages up to 60V. The LTC3814-5 uses a constant off-time peak current control architecture to deliver very high duty cycles 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 LTC3814-5 to drive large power MOSFETs for higher current applications. The operating frequency is selected by an external resistor and is pensated for variations in VIN. A shutdown pin allows the LTC3814-5 to be turned off reducing the supply current to <230μA. L, LT, LTC, LTM, Linear Technology and the Linear logo are registered trademarks and No RSENSE is a trademark 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. TYPICAL APPLICATION High Efficiency High Voltage Step-Up Converter VOUT PGOOD 263k 100k 1000p F 0.01μF 100k 100p F IOFF NDRV PGOOD BOOST VRNG VOFF RUN/SS EXTVCC INTVCC ITH BG VFB...