L6986H datasheet(27/68 Pages) STMICROELECTRONICS

部件名	L6986H

功能描述	38 V, 2 A synchronous step-down switching regulator with 30 μA quiescent current

PDF	68 Pages

Scroll/Zoom	100%

制造商	STMICROELECTRONICS [STMicroelectronics]

网页	http://www.st.com

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27 / 68 page

Figure 25. LCM operation over loading condition (part 4-CCM)

4.8.3

Quiescent current in LCM with switchover

The current absorbed from the input voltage in the low consumption mode while regulating the output voltage at

the zero output load depends on the input voltage value and the selected skip current level, as shown in

Figure 26. Quiescent current at VOUT = 3.3 V and zero output load and Figure 27. Quiescent current at VOUT = 5

V and zero output load

Figure 26. Quiescent current at VOUT = 3.3 V and zero output load

When VIN is adequately higher than VOUT (see Figure 26. Quiescent current at VOUT = 3.3 V and zero output

load ) the device works in the bursts mode operation, minimizing the power consumption over the entire input

voltage (see Section 4.8.2 Low consumption mode (LCM)).

L6986H

Light-load operation

DS12905 - Rev 2

page 27/68

L6986H 数据表(PDF) 27 Page - STMicroelectronics