Datasheet
LM4675, LM4675SDBD, LM4675TLBD
SNAS353C –AUGUST 2006–REVISED MAY 2013
www.ti.com
Electrical Characteristics
(1)(2)
The following specifications apply for A
V
= 2V/V (R
I
= 150kΩ), R
L
= 15µH + 8Ω + 15µH unless otherwise specified. Limits
apply for T
A
= 25°C.
LM4675
Units
Symbol Parameter Conditions
(Limits)
Typical
(3)
Limit
(4)(5)
Differential Output Offset V
I
= 0V, A
V
= 2V/V,
|V
OS
| 3 mV
Voltage V
DD
= 2.4V to 5.0V
|I
IH
| Logic High Input Current V
DD
= 5.0V, V
I
= 5.5V 17 100 μA (max)
|I
IL
| Logic Low Input Current V
DD
= 5.0V, V
I
= –0.3V 0.9 5 μA (max)
V
IN
= 0V, No Load, V
DD
= 5.0V 2.8 3.9 mA (max)
V
IN
= 0V, No Load, V
DD
= 3.6V 2.2 2.9 mA
V
IN
= 0V, No Load, V
DD
= 2.4V 1.6 2.3 mA (max)
Quiescent Power Supply
I
DD
Current
V
IN
= 0V, R
L
= 8Ω, V
DD
= 5.0V 2.8
V
IN
= 0V, R
L
= 8Ω, V
DD
= 3.6V 2.2
V
IN
= 0V, R
L
= 8Ω, V
DD
= 2.4V 1.6
V
SHUTDOWN
= 0V
I
SD
Shutdown Current
(6)
0.01 1.0 μA (max)
V
DD
= 2.4V to 5.0V
V
SDIH
Shutdown voltage input high 1.4 V (min)
V
SDIL
Shutdown voltage input low 0.4 V (max)
R
OSD
Output Impedance V
SHUTDOWN
= 0.4V 100 kΩ
V/V (min)
A
V
Gain 300kΩ/R
I
V/V (max)
Resistance from Shutdown Pin
R
SD
300 kΩ
to GND
f
SW
Switching Frequency 300±30% kHz
R
L
= 15μH + 4Ω + 15μH V
DD
= 5V 2.7 W
THD = 10% (max)
V
DD
= 3.6V 1.3 W
f = 1kHz, 22kHz BW
V
DD
= 2.5V 560 mW
R
L
= 15μH + 4Ω + 15μH V
DD
= 5V 2.2 W
THD = 1% (max)
V
DD
= 3.6V 1.08 W
f = 1kHz, 22kHz BW
V
DD
= 2.5V 450 mW
P
O
Output Power
R
L
= 15μH + 8Ω + 15μH V
DD
= 5V 1.6 W
THD = 10% (max)
V
DD
= 3.6V 820 mW
f = 1kHz, 22kHz BW
V
DD
= 2.5V 350 mW
R
L
= 15μH + 8Ω + 15μH V
DD
= 5V 1.3 W
THD = 1% (max)
V
DD
= 3.6V 650 600 mW
f = 1kHz, 22kHz BW
V
DD
= 2.5V 290 mW
V
DD
= 5V, P
O
= 0.1W, f = 1kHz 0.03 %
Total Harmonic Distortion +
THD+N V
DD
= 3.6V, P
O
= 0.1W, f = 1kHz 0.02 %
Noise
V
DD
= 2.5V, P
O
= 0.1W, f = 1kHz 0.04 %
(1) All voltages are measured with respect to the ground pin, unless otherwise specified.
(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 ensure specific performance limits. Electrical Characteristics 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 ensured for parameters where no limit is given, however, the typical value is a good indication
of device performance.
(3) Typical specifications are specified at 25°C and represent the parametric norm.
(4) Tested limits are specified to TI's AOQL (Average Outgoing Quality Level).
(5) Datasheet min/max specification limits are ensured by design, test, or statistical analysis.
(6) Shutdown current is measured in a normal room environment. Exposure to direct sunlight will increase I
SD
by a maximum of 2µA. The
Shutdown pin should be driven as close as possible to GND for minimal shutdown current and to V
DD
for the best THD performance in
PLAY mode. See the Application Information section under SHUTDOWN FUNCTION for more information.
4 Submit Documentation Feedback Copyright © 2006–2013, Texas Instruments Incorporated
Product Folder Links: LM4675 LM4675SDBD LM4675TLBD