(China (Mainland))
Product Summary
The LTC1553CSW is a high power, high efficiency switching regulator controller optimized for 5V or 12V input to 1.8V-3.5V output applications. It features a digitally programmable output voltage, a precision internal reference and an internal feedback system that provides output accuracy of ±1.5% at room temperature and typically ±2% over-temperature, load current and line voltage shifts. The LTC1553CSW uses a synchronous switching architecture with two external N-channel output devices, providing high efficiency and eliminating the need for a high power, high cost P-channel device. The applications of the LTC1553CSW include Power Supply for Pentium II, SPARC, ALPHA and PA-RISC Microprocessors, High Power 5V or 12V to 1.8V-3.5V Regulator.
Parametrics
LTC1553CSW absolute maximum ratings: (1)Supply Voltage, VCC: 9V; PVCC: 20V; (2)Input Voltage, IFB (Note 2): PVCC + 0.3V; IMAX: 0.3V to 13V; (3)All Other Inputs: -0.3V to VCC + 0.3V; (4)Digital Output Voltage: -0.3V to 13V; (5)IFB Input Current (Notes 2, 3): -100mA; (6)Operating Temperature Range: 0℃ to 70℃; (7)Storage Temperature Range;: -65℃ to 150℃; (8)Lead Temperature (Soldering, 10 sec.): 300℃.
Features
LTC1553CSW features: (1)5-Bit Digitally Programmable 1.8V to 3.5V Fixed Output Voltage; (2)Provides All Features Required by the Intel Pentium II Processor VRM 8.2 DC/DC Converter Specification; (3)Flags for Power Good, Over-Temperature and Overvoltage Fault; (4)19A Output Current Capability from a 5V or 12V Supply; (5)Dual N-Channel MOSFET Synchronous Driver; (6)Initial Output Accuracy: ±1.5%; (7)Excellent Output Accuracy: ±2% Typ Over Line, Load and Temperature Variations; (8)High Efficiency: Over 95% Possible; (9)Adjustable Current Limit Without External Sense Resistors; (10)Fast Transient Response; (11)Available in 20-Lead SSOP and SW Packages.
Diagrams
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 LTC1553CSW |
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IC SW REG CNTRLR 5BIT PROG20SOIC |
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LTC1553CSW#PBF |
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IC SW REG CNTRLR 5BIT PROG20SOIC |
Data Sheet |
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LTC1553CSW#TR |
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IC REG SW CTRLR 5BIT PROG 20SOIC |
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LTC1553CSW#TRPBF |
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IC SW REG CNTRLR 5BIT PROG20SOIC |
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Negotiable |
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