(Hong Kong)
Product Summary
The LTC1649IS#TR is a high power, high efficiency switching regulator controller optimized for use with very low supply voltages. It operates from 2.7V to 5V input, and provides a regulated output voltage from 1.26V to 2.5V at up to 20A load current. A typical 3.3V to 2.5V application features efficiency above 90% from 1A to 10A load. The LTC1649IS#TR uses a pair of standard 5V logic-level N-channel external MOSFETs, eliminating the need for expensive P-channel or super-low-threshold devices. The applications of the LTC1649IS#TR include 3.3V Input Power Supply for Low Voltage Microprocessors and Logic, Low Input Voltage Power Supplies, High Power, Low Voltage Regulators, Local Regulation for Multiple Voltage Distributed Power Systems.
Parametrics
LTC1649IS#TR absolute maximum ratings: (1)Supply Voltage, VIN: 6V; VCC: 9V; PVCC1, 2: 13V; (2)Input Voltage, IFB: -0.3V to 18V; (3)C+, C-: -0.3V to (VIN + 0.3V); (4)All Other Inputs: -0.3V to (VCC + 0.3V); (5)Operating Temperature Range: -40℃ to 85℃; (6)Storage Temperature Range: -65℃ to 150℃; (7)Lead Temperature (Soldering, 10 sec): 300℃.
Features
LTC1649IS#TR features: (1)High Power 3.3V to 1.×V-2.×V Switching Regulator Controller: Up to 20A Output; (2)All N-Channel External MOSFETs; (3)Provides 5V MOSFET Gate Drive with 3.3V Input; (4)Excellent Output Regulation: ±1% Over Line, Load and Temperature Variations; (5)Constant Frequency Operation Minimizes Inductor Size; (6)High Efficiency: Over 90% Possible; (7)No Low-Value Sense Resistor Needed; (8)Available in 16-Lead SO Package.
Diagrams
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 LTC1649IS#TR |
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IC REG CTRLR BUCK PWM VM 16-SOIC |
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LTC1649IS#TRPBF |
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IC REG CTRLR BUCK PWM VM 16-SOIC |
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