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LTC3113 数据表(PDF) 1 Page - Linear Technology |
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LTC3113 数据表(HTML) 1 Page - Linear Technology |
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1 / 24 page  LTC3113 1 3113f TYPICAL APPLICATION DESCRIPTION 3A Low Noise Buck-Boost DC/DC Converter The LTC ®3113 is a wide VIN range, highly efficient, fixed frequency, buck-boost DC/DC converter that operates from input voltages above, below or equal to the output voltage. The topology incorporated in the IC provides low noise operation, making it well suited for RF and precision measurement applications. The LTC3113 can deliver up to 3A of continuous output current to satisfy the most demanding applications. Higher output current is possible in stepdown (buck) mode. Integrated low RDS(ON) power MOSFETs and a programmable switching frequency up to 2MHz result in a compact solution footprint. Selectable Burst Mode operation improves efficiency at light loads. Other features include <1μA shutdown current, integrated soft-start, short-circuit protection, current limit and ther- mal overload protection. The LTC3113 is housed in the thermally enhanced 16-lead (4mm × 5mm × 0.75mm) DFN and 20-lead TSSOP packages. FEATURES APPLICATIONS n Regulated Output with Input Voltage Above, Below or Equal to the Output Voltage n 1.8V to 5.5V Input and Output Voltage Range n 3A Continuous Output Current VIN > 3.0V, VOUT = 3.8V n 1.5A Continuous Output Current for VIN ≥ 1.8V, VOUT = 3.3V n Single Inductor n Low Noise Buck-Boost Architecture n Up to 96% Efficiency n Programmable Frequency from 300kHz to 2MHz n Selectable Burst Mode ® Operation n Output Disconnect in Shutdown n Shutdown Current: <1μA n Internal Soft-Start n Small, Thermally Enhanced 16-Lead (4mm × 5mm × 0.75mm) DFN Package and 20-Lead TSSOP Package n Wireless Modems n Backup Power Systems n Portable Inventory Terminals n Portable Barcode Readers n Portable Instrumentation Efficiency vs Input Voltage SW1 VIN VOUT LTC3113 2.2μH RUN 47μF 100μF VOUT 3.8V 3A VIN 3V TO 4.2V BURST OFF ON PWM BURST FB VC 49.9k 845k 680pF 12pF 90.9k RT SW2 SGND PGND 158k 3113 TA01a 6.49k 47pF L, LT, LTC, LTM, Burst Mode, Linear Technology and the Linear logo are registered trademarks and No RSENSE, PowerPath are trademarks of Linear Technology Corporation. All other trademarks are the property of their respective owners. Li-Ion to 3.8V/3A INPUT VOLTAGE (V) 1.5 50 55 65 70 75 100 85 2.0 2.5 3113 TA01b 60 90 95 80 3.0 3.5 4.0 4.5 5.0 5.5 ILOAD = 1A VOUT = 3.8V ILOAD = 3A |
类似零件编号 - LTC3113 |
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类似说明 - LTC3113 |
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