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LTC3313JVPBF Datasheet(PDF) 1 Page - Analog Devices |
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LTC3313JVPBF Datasheet(HTML) 1 Page - Analog Devices |
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1 / 28 page  LTC3313 1 Rev. 0 For more information www.analog.com Document Feedback TYPICAL APPLICATION FEATURES DESCRIPTION The LTC®3313 is a very small, low noise, monolithic step-down DC/DC converter capable of providing up to 15A of output current from a 2.25V to 5.5V input supply. The device employs the Silent Switcher architecture to achieve both low EMI and high efficiency at switching frequencies as high as 5MHz. For systems with higher power requirements, multiphasing parallel converters is readily implemented. The LTC3313 uses a constant frequency, peak current mode control architecture for fast transient response. A 500mV reference allows for low voltage outputs. 100% duty cycle operation delivers low drop out. Other features include a power good signal when the output is in regulation, a precision enable threshold, output overvoltage protection, thermal shutdown, a temperature monitor, clock synchronization, mode selection, and output short circuit protection. The device is available in a compact 18-pin 3mm × 3mm LQFN package. 1.2V, 15A Step-Down Converter Efficiency vs Load Current APPLICATIONS n Layout Compatible with LTC3310/LTC3311 Family n Silent Switcher® Architecture n Ultralow EMI Emissions n High Efficiency: 3mΩ NMOS and 8mΩ PMOS n Wide Bandwidth, Fast Transient Response n Safely Tolerates Inductor Saturation in Overload n VIN Range: 2.25V to 5.5V n VOUT Range: 0.5V to VIN n VOUT Accuracy: ±1% with Remote Sense n Peak Current Mode Control n Minimum On-Time: 35ns n Programmable Frequency to 5MHz n Shutdown Current: 1µA n Precision 400mV Enable Threshold n Output Soft-Start with Voltage Tracking n Power Good Output n Die Temperature Monitor n Configurable for Paralleling Power Stages n Thermally-Enhanced 3mm × 3mm LQFN Package n AEC-Q100 Qualified for Automotive Applications n Automotive/Industrial/Communications n Servers, Telecom Power Supplies n Distributed DC Power Systems (POL) n FPGA, ASIC, µP Core Supplies All registered trademarks and trademarks are the property of their respective owners. 3313 TA01a 140k 47µF ×3 100k VOUT 1.2V 15A 6.8pF 274k 22µF 22µF 0.1µF SW FB AGND RT EN MODE/SYNC PGOOD SSTT ITH 0.1µF 0.1µF 15k 470pF VIN VIN 3V TO 5.5V PGND LTC3313 80nH 1F VIN 5V, 15A Synchronous Step-Down Silent Switcher in 3mm × 3mm LQFN EFFICIENCY POWER LOSS VIN = 3.3V VOUT = 1.2V fSW = 2MHz COILCRAFT XEL4020-800MEC LOAD CURRENT (A) 0 2.5 5 7.5 10 12.5 15 0 10 20 30 40 50 60 70 80 90 100 0 0.4 0.8 1.2 1.6 2.0 2.4 2.8 3.2 3.6 4.0 3313 TA01a |
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