LM4991

SNAS217A – MAY 2004 – REVISED APRIL 2013

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Typical Application

Figure 3. Typical Audio Amplifier Application Circuit

These devices have limited built-in ESD protection. The leads should be shorted together or the device placed in conductive foam

during storage or handling to prevent electrostatic damage to the MOS gates.

Absolute Maximum Ratings

(1) (2)

Supply Voltage

6.0V

Supply Temperature

−65°C to +150°C

Input Voltage

−0.3V to VDD to +0.3V

Power Dissipation(3)

Internally Limited

ESD Susceptibility(4)

2000V

ESD Susceptibility(5)

200V

Junction Temperature

150°C

Thermal Resistance

θJC (LD)

(6)

4.3°C/W

θJA (LD)

56°C/W

θJC (MA)

35°C/W

θJA (MA)

140°C/W

(1)

Absolute Maximum Ratings indicate limits beyond which damage to the device may occur. Operating Ratings indicate conditions for

which the device is functional, but do not ensure specific performance limits. Electrical Characteristics VDD= 5V state DC and AC

electrical specifications under particular test conditions which ensure specific performance limits. This assumes that the device is within

the Operating Ratings. Specifications are not ensure for parameters where no limit is given, however, the typical value is a good

indication of device performance.

(2)

If Military/Aerospace specified devices are required, please contact the Texas Instruments Sales Office/ Distributors for availability and

specifications.

(3)

The maximum power dissipation must be derated at elevated temperatures and is dictated by TJMAX, θJA, and the ambient temperature

TA. The maximum allowable power dissipation is PDMAX = (TJMAX–TA)/θJA or the number given in Absolute Maximum Ratings, whichever

is lower. For the LM4991, TJMAX = 150°C. For the θJA's for different packages, please see theApplication Information section or the

Absolute Maximum Ratings section.

(4)

Human body model, 100pF discharged through a 1.5k

Ω resistor.

(5)

Machine Model, 220pF–240pF discharged through all pins.

(6)

The given

θJA is for an LM4991 packaged in an LDC08A with the Exposed–DAP soldered to an exposed 1in

2 area of 1oz printed circuit

board copper.

Operating Ratings

Temperature Range

TMIN ≤ TA ≤ TMAX

−40°C ≤ TA ≤ +85°C

Supply Voltage

2.2V

≤ VDD ≤ 5.5V

2

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