Datasheet

LM48511
www.ti.com SNAS416G –JULY 2007–REVISED MAY 2013
Electrical Characteristics V
DD
= 3.0V
(1)(2)(3)
(continued)
The following specifications apply for V
DD
= 3.0V, PV1 = 4.8V (continuos mode), A
V
= 2V/V, R
3
= 25.5kΩ, R
LS
= 9.31kΩ,
R
L
= 8Ω, f = 1kHz, SS/FF = GND, unless otherwise specified. Limits apply for T
A
= 25°C.
LM48511 Units
Symbol Parameter Conditions
(Limits)
Typical
(4)
Limit
(5)
V
RIPPLE
= 200mV
P-P
Sine,
f
RIPPLE =
= 217Hz
FF 89 dB
SS 89 dB
V
RIPPLE
= 200mV
P-P
Sine,
Power Supply Rejection Ratio f
RIPPLE =
= 1kHz
PSRR
(Input Referred) FF 88 dB
SS 88 dB
V
RIPPLE
= 200mV
P-P
Sine,
f
RIPPLE =
= 10kHz
FF 78 dB
SS 78 dB
Common Mode Rejection Ratio
CMRR V
RIPPLE
= 1V
P-P
, f
RIPPLE
= 217Hz 71 dB
(Input Referred)
η Efficiency f = 1kHz, R
L
= 8Ω, P
O
= 1W 75 %
V
FB
Feedback Pin Reference Voltage
(8)
1.23 V
(8) Feedback pin reference voltage is measured with the Audio Amplifier disconnected from the Boost converter (the Boost converter is
unloaded).
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