MAX1917EEE Maxim Integrated Products, MAX1917EEE Datasheet
MAX1917EEE
Specifications of MAX1917EEE
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MAX1917EEE Summary of contents
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... DDR Frequencies o Variable Switching Frequency 1MHz o Overcurrent Protection Without Current-Sense Resistor o Internal Soft-Start o VTTR Reference Sources and Sinks Up to 25mA o Quick-PWM Control for Fastest Loop Response 96% Efficiency o 16-Pin QSOP Package Applications PART MAX1917EEE V (2.5V TO 15V) IN POK VDDR 16 LX (4.5V TO 14V BST ...
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Tracking, Sinking and Sourcing, Synchronous Buck Controller for DDR Memory and Termination Supplies ABSOLUTE MAXIMUM RATINGS V+ to GND ..............................................................-0.3V to +15V EN/HSD to GND .....................................................-0.3V to +16V VL to GND ................................................................-0.3V to +6V PGND to GND .......................................................-0.3V to +0.3V ...
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Tracking, Sinking and Sourcing, Synchronous Buck Controller for DDR Memory and Termination Supplies ELECTRICAL CHARACTERISTICS (continued) (V+ = 12V 2.5V, C EN/HSD DDR BST = VL. Specifications are for T = 0°C to +85°C. Typical values ...
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Tracking, Sinking and Sourcing, Synchronous Buck Controller for DDR Memory and Termination Supplies ELECTRICAL CHARACTERISTICS (continued) (V+ = 12V 2.5V, C EN/HSD DDR VL BST = VL. Specifications are for T = 0°C to +85°C. Typical ...
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Tracking, Sinking and Sourcing, Synchronous Buck Controller for DDR Memory and Termination Supplies ELECTRICAL CHARACTERISTICS (continued) (V+ = 12V 2.5V, C EN/HSD DDR BST = VL. Specifications are for T = -40°C to +85°C, unless otherwise ...
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Tracking, Sinking and Sourcing, Synchronous Buck Controller for DDR Memory and Termination Supplies ELECTRICAL CHARACTERISTICS (continued) (V+ = 12V 2.5V, C EN/HSD DDR VL BST = VL. Specifications are for T = -40°C to +85°C, unless ...
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Tracking, Sinking and Sourcing, Synchronous Buck Controller for DDR Memory and Termination Supplies (V+ = 12V 1.25V +25°C, unless otherwise noted.) OUT A FREQUENCY vs. INPUT VOLTAGE 650 600 OUT 550 500 I ...
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Tracking, Sinking and Sourcing, Synchronous Buck Controller for DDR Memory and Termination Supplies (V+ = 12V 1.25V +25°C, unless otherwise noted.) OUT A CURRENT LIMIT vs. TEMPERATURE 402kΩ ILIM 10 ...
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Tracking, Sinking and Sourcing, Synchronous Buck Controller for DDR Memory and Termination Supplies FSEL ON TIME COMPUTE TON TRIG Q POK 1-SHOT DDR EN/HSD MAX1917 _______________________________________________________________________________________ 1-SHOT VTT Q TRIG VTTR Functional Diagram ILIM 5µA BST DH ...
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Tracking, Sinking and Sourcing, Synchronous Buck Controller for DDR Memory and Termination Supplies Detailed Description Internal Linear Regulator (VL) An internal regulator produces the 5V supply (VL) that powers the PWM controller, MOSFET driver, logic, ref- erence, and other blocks ...
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Tracking, Sinking and Sourcing, Synchronous Buck Controller for DDR Memory and Termination Supplies Voltage Reference The voltage at REF is nominally 2.00V. Connect a 0.22µF ceramic bypass capacitor between REF and GND. Overcurrent Protection The current-limit circuit employs a unique ...
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Tracking, Sinking and Sourcing, Synchronous Buck Controller for DDR Memory and Termination Supplies high-side FET from turning on until DL is fully off. There must be a low-resistance, low-inductance path from the DL driver to the MOSFET gate in order ...
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Tracking, Sinking and Sourcing, Synchronous Buck Controller for DDR Memory and Termination Supplies VL R3 20kΩ POK 5.5V TO 14V V+ V DDR C9 0.47µF/25V C8 0.47µF/10V SHDN Q3 2N7002K VL Figure 4. Typical Application Circuit for 1.25V at 7A ...
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Tracking, Sinking and Sourcing, Synchronous Buck Controller for DDR Memory and Termination Supplies R2 10kΩ SHDN Si1029X R3 20kΩ` POK 5.5V TO 14V V+ V DDR C9 0.47µF/25V C8 0.47µF/10V VL Figure 6. Typical Application Circuit Using P/N-Channel ...
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Tracking, Sinking and Sourcing, Synchronous Buck Controller for DDR Memory and Termination Supplies Design Procedure Firmly establish the input voltage range and maximum load current before choosing a switching frequency and inductor operating point (ripple current ratio). The primary design ...
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Tracking, Sinking and Sourcing, Synchronous Buck Controller for DDR Memory and Termination Supplies The actual microfarad capacitance value required relates to the physical size needed to achieve low ESR, as well as to the chemistry of the capacitor technology. As ...
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Tracking, Sinking and Sourcing, Synchronous Buck Controller for DDR Memory and Termination Supplies The absolute worst case for MOSFET power dissipation occurs under heavy overloads that are greater than or equal protect against this condition, LOAD(MAX) ...
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... Maxim cannot assume responsibility for use of any circuitry other than circuitry entirely embodied in a Maxim product. No circuit patent licenses are implied. Maxim reserves the right to change the circuitry and specifications without notice at any time. 18 ____________________Maxim Integrated Products, 120 San Gabriel Drive, Sunnyvale, CA 94086 408-737-7600 © 2002 Maxim Integrated Products Printed USA is a registered trademark of Maxim Integrated Products ...