L9924L datasheet(17/84 Pages) STMICROELECTRONICS

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L9924L

Electrical specifications

Figure 6. Internal resistor ladder on pin A+

When the A+ voltage drops below VBlow the whole device is turned-off and could be

initialized by a Power-On Reset (PORn).

Table 8. Pin "A+/B+" electrical characteristics

Symbol

Parameter

Test condition

Min.

Typ.

Max.

Unit

1VBOVR Operating Voltage Range

2IBstby12V

12-V stand-by current

consumption

V(A+/B+) = 12.6 V

6 wake-up sources active

V(PH)=V(AUX_IN)=V(GND)

LIN_BSS tied to A+/B+

RC pin tied to A+/B+ through a

resistor

255

µA

3IBstby24V

24-V stand-by current

consumption

V(A+/B+) = 25.2 V

6 wake-up sources active

V(PH)=V(AUX_IN)=V(GND)

LIN_BSS pin tied to A+/B+;

RC pin tied to A+/B+ through a

resistor

265

µA

4VBIntOvp

Over-voltage protection

threshold (12-V systems)

[0x2].12 = SEL24V_EN = b0

16.5

17.6

Over-voltage protection

threshold (24-V systems)

[0x2].12 = SEL24V_EN = b1

35.5

5VBlow

A+/B+ under-voltage

4.5

5.3

αB

Resistor divider attenuation

[0x2].12 = SEL24V_EN = 0

3.96

4.04

V/V

[0x2].12 = SEL24V_EN = 1

7.925

8.069

V/V

εB

Resistor divider accuracy

[0x2].12 = SEL24V_EN = 1

0.9

8fBp

Pole frequency

520

860

1570

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