Analog Devices Inc.

Dual 2-Phase, No RSENSE,Synchronous Controller for DDR/QDR Memory Termination Features: No Current Sense Resistors Required Out-of-Phase Controllers Reduce Required Input Capacitance VOUT2 Tracks 1/2 VREF Symmetrical Source/Sink Output Current Capability (VOUT2) Spread Spectrum Operation (When Enabled) Wide VIN Range: 2.75V to 9.8V Constant Frequency Current Mode Operation 0.6V ±1.5% Voltage Reference (VOUT1) Low Dropout Operation: 100% Duty Cycle True PLL for Frequency Locking or Adjustment Internal Soft-Start Circuitry Power Good Output Voltage Monitor Output Overvoltage Protection Micropower Shutdown: IQ = 9µA Tiny Low Profile (4mm × 4mm) QFN and Narrow SSOP Packages

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