TDA7572 datasheet(16/64 Pages) STMICROELECTRONICS

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Electrical specifications

TDA7572

16/64

4.3.2

Under voltage lockout

VSPLIT

Operating voltage VSP -

VSM split supply rails

Normal operation required

Split supply application

configuration,

VSM<VSVR-4,

VSP>VSVR+4

848

Istdby

Stand-by current

IC in standby, Mode0, and Mode1

low Vs = 42V

50 at

T = 25°C

10 at

T = 85°C

μA

Itristate

Tristate current

Outputs tristated

Booster not running,

Fpwm = nominal

V14

VSP

IMUTE

Mute mode current

MUTE asserted,

V14

VSP

Table 6.

Operating voltage and current (continued)

Symbol

Parameters

Test conditions

Min.

Typ.

Max.

Units

Table 7.

Under voltage lockout

Symbol

Parameters

Test conditions

Min.

Typ.

Max.

Units

VLimAM

AutomuteVSetting

voltage limit

Voltage limit respect to the SVR pin

Allowed voltage range on Automute

0.5

2.1

VSP UVLO

VAM

Auto-mute supply

voltage VSP

Mute is forced if VSP-VSVR or

VSVR-VSM is less than this value

VautomuteVSetting-VSVR=VVSVR

-15%

VVSVR*

+15%

VPO-

Auto-tristate supply

voltage VSP negative

slope

The IC is set in tristate if VSP-VSM

is less than this value

Vautomute VSetting-VSVR=VVSVR

-15%

VVSVR

*12

+15%

VPO+

Auto-tristate supply

voltage VSP positive

slope

The IC is set out from tristate if

VSP-VSM is higher than this value

Vautomute VSetting-VSVR=VVSVR

-15%

VVSVR

*13

+15%

Auto-tristate supply

voltage VSP

Relative maximum value

The IC is set in tristate if VSP-VSM

is more than this value

Vautomute VSetting-VSVR=VVSVR

-15%

VVSVR*

+15%

VUC

Auto-tristate supply

voltage

VSP

Absolute maximum

value

The IC is set in tristate if VSP-VSM

is higher than this value

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