A6986H datasheet(29/71 Pages) STMICROELECTRONICS

Part #	A6986H

Description	Automotive 38 V, 2 A synchronous step-down switching regulator with 30 μA

PDF	71 Pages

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Manufacturer	STMICROELECTRONICS [STMicroelectronics]

Direct Link	http://www.st.com

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

5.8.3

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 5.8.2 Low consumption mode (LCM)).

A6986H

Light-load operation

DS12861 - Rev 3

page 29/71

A6986H Datasheet(PDF) 29 Page - STMicroelectronics