AN2716 datasheet(14/28 Pages) STMICROELECTRONICS

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STCC08 consumption

AN2716

14/28

Doc ID 14460 Rev 2

STCC08 consumption

Equation 8, Figure 12, and Table 4 define the maximum STCC08 current consumption

(IDC_max). The current IAC is used only to detect the AC switch states. This current comes

from the AC line and not from the STCC08 DC power supply. The current IG is the gate

current to turn on the AC switch, defined according to the external resistor RIG value (see

Figure 13). The current IQuiescent defines the STCC08 quiescent current. The maximum

IQuiescent current is specified at 2 mA. The maximum IN input current (IIN_Max) is specified at

100 µA. The AVF current, used to polarize the STCC08 AVF output is defined by the resistor

RAVF or by the MCU pull up resistor (see Equation 9).

Equation 8

Figure 12.

STCC08 current consumption

Equation 9

Table 4.

STCC08 consumption values

Parameter

Definition

Maximum value

IG_max

AC switch gate current

Depends on the RIG resistor. See

Figure 13

IQuiescent

STCC08 current consumption

2 mA

IAVF

AVF pin collector current

Depends on the RAVF resistor

(IAVF_max = 5 mA). See Equation 9

IIN

IN input current (to control the AC switch) 100 µA

max

Quiesient

max

AVF

G_max

max

IAC

Load

RShunt

Neutral

Line

VCC

MCU

AVF

STCC08

IIN

IAVF

IQuiescent

RAC

RAVF

VDC

GND

IDC

max

AVF

min

AVF

max

Pull-up_min

max

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