LM2640 datasheet(11/18 Pages) NSC

Part #	LM2640

Description	Dual Adjustable Step-Down Switching Power Supply Controller

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Manufacturer	NSC [National Semiconductor (TI)]

Direct Link	http://www.national.com

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11 / 18 page

Typical Performance Characteristics (Continued)

REF Output Voltage

Normalized Switching

Output Voltage vs

Junction Temperature

10014826

10014827

10014828

Normalized Error Amplifier

Offset vs Junction Temperature

Error Amplifier Gm vs

Junction Temperature

CH1 Skip Frequency

vs Load Current

10014829

10014830

10014831

Normalized Oscillator Frequency

vs. Junction Temperature

CH1 Skip Frequency

vs Load Current

Shutdown Quiescent Current

And Standby Quiescent

Current vs Supply Voltage

10014832

10014833

10014834

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11

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