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L6984 Datasheet(PDF) 17 Page - STMicroelectronics

Part # L6984
Description  36 V 400 mA synchronous step-down switching regulator
PDF  34 Pages
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Manufacturer  STMICROELECTRONICS [STMicroelectronics]
Direct Link  http://www.st.com
Logo STMICROELECTRONICS - STMicroelectronics

L6984 Datasheet(HTML) 17 Page - STMicroelectronics

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DocID025378 Rev 3
17/34
L6984
Device description
34
Figure 8. Low noise mode operation
Typical applications for the LNM operation are car audio, sensors.
3.4.2
Low consumption mode (LCM)
The low consumption mode maximizes the efficiency at the light load. As soon as the output
voltage drops, the regulator generates a pulse to have the FB back in regulation. In order to
minimize the current consumption in the LCM part of the internal circuitry is disabled in the
time between bursts.
Figure 9. LCM operation at zero load



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