TAS5110

SLES028A – MAY 2002 – REVISED SEPTEMBER 2002

10

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audio application considerations (continued)

reconstruction output filter

An output reconstruction filter is required between the H-bridge outputs and the loudspeaker load. This second

order low-pass filter passes the audio information to the loudspeaker, while filtering out the high frequency

out-of-band information contained in the H-bridge output PWM pulses. The values of the L and C components

selected are dependent on the loudspeaker load impedance.

fault indicator usage

The TAS5110 is a self-protecting device that provides device fault reporting, including over-temperature protect,

under-voltage lockout (low-regulator voltage), and short circuit protection. The short circuit protection protects

against short circuits that may occur at the loudspeaker load when configured. The TAS5110 is not

recommended for driving loads less than 6

Ω, since the internal current limit protection might be activated.

An under-voltage lockout signal occurs when an insufficient voltage level is present on the LDROUTA or

LDROUTB pins. During this condition gate drive levels are not sufficient for driving the power MOSFETs. Normal

operation is resumed when the minimum proper LDROUTA or LDROUTB level is obtained and the low regulator

voltage protect signal is de-asserted. See the control/sense circuitry section for error and warning conditions.

A high temperature warning signal is asserted on pin ERR0 when the device temperature exceeds 125

°C

typical.

If the internal device temperature exceeds 150

°C typical, the over temperature protect signal is asserted and

the TAS5110 is shut down. The device re-enables once the temperature drops to 125

°C typical. See the

control/sense circuitry section for error and warning conditions.

Detection of an illegal PWM input state or the loss of a clocking PWM input signal causes an illegal PWM input

state signal to be asserted on the ERR1and ERR0 pins and sets the SHUTDOWN pin to the low state.

DC supply voltage range: DVDD to DVSS

–0.3 V to 4.2 V

. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

PWM_AP, PWM_AM, PWM_BP, PWM_BM

–0.3 V to DVDD + 0.3 V

. . . . . . . . . . . . . . . . .

RESET, PWDN

–0.3 V to DVDD + 0.3 V

. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

PVDDA1 to PVSS, PVDDB1 to PVSS

–0.3 V to 28 V

. . . . . . . . . . . . . . . . . . . . . . . . . . . . .

PVDDA2 to PVSS, PVDDB2 to PVSS

–0.3 V to 27 V

. . . . . . . . . . . . . . . . . . . . . . . . . . . . .

Output DMOS drain-to-source breakdown voltage

28 V

. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

–40

°C to 150°C

. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

–65

°C to 150°C

. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

Lead temperature 1,6 mm (1/16 inch) from case for 10 seconds)

260

°C

. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

† Stresses beyond those listed under “absolute maximum ratings” may cause permanent damage to the device. These are stress ratings only, and

functional operation of the device at these or any other conditions beyond those indicated under “recommended operating conditions” is not

implied. Exposure to absolute-maximum-rated conditions for extended periods may affect device reliability.