Symbol

Parameter

Conditions

LM48520

Units

(Limits)

Typical

(Note 6)

Limit

(Notes 7, 8)

PSRR

Power Supply Rejection Ratio

V

f

82

dB

V

f

79

dB

CMRR

Common Mode Rejection Ratio

V

67

dB

η

Efficiency

P

R

V

V

78

%

V

FB

Feedback Pin Reference Voltage

(Note 11)

1.24

V

V

out clipped

Output Voltage in clipped state with

soft clip activated

V

V

2.5

1.9

3.2

Vpk (min)

Vpk (max)

Note 1: All voltages are measured with respect to the GND pin, unless otherwise specified.

Note 2: 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 guarantee specific performance limits. Electrical Characteristics state DC and AC electrical specifications under particular test conditions

which guarantee specific performance limits. This assumes that the device is within the Operating Ratings. Specifications are not guaranteed for parameters

where no limit is given, however, the typical value is a good indication of device performance.

Note 3: The maximum power dissipation must be derated at elevated temperatures and is dictated by T

allowable power dissipation is P

Note 4: Human body model, 100pF discharged through a 1.5k

Ω resistor.

Note 5: Machine Model, 220pF–240pF discharged through all pins.

Note 6: Typicals are measured at 25°C and represent the parametric norm.

Note 7: Limits are guaranteed to National's AOQL (Average Outgoing Quality Level).

Note 8: Datasheet min/max specification limits are guaranteed by design, test, or statistical analysis.

Note 9: Shutdown current is measured in a normal room environment. The Shutdown pin should be driven as close as possible to V

current.

Note 10: Shutdown current is measured with components R1 and R2 removed.

Note 11: Feedback pin reference voltage is measured with the Audio Amplifier disconnected from the Boost converter (the Boost converter is unloaded).

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