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ML6554, ML65541CS, ML6554CU

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Info of ML6554
Info of ML65541CS
Info of ML6554CU

ML6554, ML65541CS, ML6554CU Selling Leads, Datasheet

MFG:Fairchild Package Cooled:N/A D/C:09+

ML6554, ML65541CS, ML6554CU Datasheet download

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Part Number: ML6554

MFG: Fairchild

Package Cooled: N/A

D/C: 09+

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ML6554 General Description

The ML6554 switching regulator is designed to convert voltage supplies ranging from 2.3V to 4V into a desired output voltage or termination voltage for various applications. The ML6554 can be implemented to produce regulated output voltages in two different modes. In the default mode, when the V_REFpin is open, the ML6554 output voltage is 50% of the voltage applied to V_CCQ. The ML6554 can also be used to produce various user-defined voltages by forcing a voltage on the VREF_INpin. In this case, the output voltage follows the input VREF _INvoltage. The switching regulator is capable of sourcing or sinking up to 3A of current while regulating an output V_TTvoltage to within 3% or less.

The ML6554, used in conjunction with series termination resisitors, provides an excellent voltage source for active termination schemes of high speed transmission lines as those seen in high speed memory buses and distributed backplane designs. The voltage output of the regulator can be used as a termination voltage for other bus interface standards such as DDR SDRAM, SSTL, CMOS, Rambus ™,GTL+, VME, LV-CMOS, LV-TTL, HSTL and PECL.

ML6554 Maximum Ratings

Parameter	Min	Max	Units
PV_DD Voltage on Any Other Pin Average Switch Current (I_AVG) Junction Temperature Storage Temperature Range Lead Temperature (Soldering, 10 sec) Thermal Resistance (_JC)(Note 2) Output Current, Source or Sink	GND 0.3 -65	4.5 V_IN+ 0.3 3.0 150 150 150 2 3.0	V V A °C °C °C °C/W A

ML6554 Features

• Can source and sink up to 3A, no heat sink required
• Integrated Power MOSFETs
• Generates termination voltages for DDR SDRAM, SSTL-2 SDRAM, SGRAM, or equivalent memories
• Generates termination voltages for active termination schemes for DDR SDRAM, GTL+, Rambus, VME, LV-TTL, HSTL, PECL and other high speed logic
• V_REF input available for external voltage divider
• Separate voltages for V_CCQ and PV_DD
• Buffered V_REF output
• V_OUT of ±3% or less at 3A
• Minimum external components
• Shutdown for standby or suspend mode operation
• 0° to +70°C and -40° to +85°C temperature ranges available
• Thermal Shutdown 130ºC

ML6554 Connection Diagram

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