LM2647LQ/NOPB

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National Semiconductor

LM2647 DUAL SYNCHRONOUS BUCK REG

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National Semiconductor

LM2647 DUAL SYNCHRONOUS BUCK REG

Technical Specifications

Parameters and characteristics for this part

Specification	LM2647LQ/NOPB

Clock Sync	False
Control Features	Current Limit, Power Good, Soft Start, Frequency Control, Enable
Duty Cycle (Max) [Max]	75 %
Frequency - Switching [Max]	500 kHz
Frequency - Switching [Min]	200 kHz
Function	Step-Down
Mounting Type	Surface Mount
Number of Outputs	2
Operating Temperature [Max]	125 ¯C
Operating Temperature [Min]	-5 °C
Output Configuration	Positive
Output Phases	2
Output Type	Transistor Driver
Supplier Device Package	28-WQFN (5x5)
Synchronous Rectifier	True
Topology	Buck
Voltage - Supply (Vcc/Vdd) [Max]	28 V
Voltage - Supply (Vcc/Vdd) [Min]	5.5 V

Part	Supplier Device Package	Operating Temperature [Min]	Operating Temperature [Max]	Frequency - Switching [Max]	Frequency - Switching [Min]	Output Type	Mounting Type	Voltage - Supply (Vcc/Vdd) [Min]	Voltage - Supply (Vcc/Vdd) [Max]	Synchronous Rectifier	Output Phases	Number of Outputs	Duty Cycle (Max) [Max]	Clock Sync	Topology	Control Features	Function	Package / Case	Package / Case	Package / Case [y]	Output Configuration
National Semiconductor LM2647MTC/NOPB	28-TSSOP	-5 °C	125 ¯C	500 kHz	200 kHz	Transistor Driver	Surface Mount	5.5 V	28 V		2	2	75 %		Buck	Current Limit Enable Frequency Control Power Good Soft Start	Step-Down	28-TSSOP	0.173 in	4.4 mm	Positive
National Semiconductor LM2647LQ/NOPB	28-WQFN (5x5)	-5 °C	125 ¯C	500 kHz	200 kHz	Transistor Driver	Surface Mount	5.5 V	28 V		2	2	75 %		Buck	Current Limit Enable Frequency Control Power Good Soft Start	Step-Down				Positive

Prices provided here are for design reference only. For realtime values and availability, please visit the distributors directly

Distributor	Package	Quantity	$

Digikey	Bulk	120	$ 2.52
	Cut Tape (CT)	1	$ 4.66
	Digi-Reel®	1	$ 4.66
	Tape & Reel (TR)	1000	$ 2.46
		2000	$ 2.34

General part information

Buck Regulator Positive Output Step-Down DC-DC Controller IC 28-WQFN (5x5)

Technical documentation and resources

No documents available