max9744 Maxim Integrated Products, Inc., max9744 Datasheet - Page 2

• Manufacturer Part Number: max9744
• Description: 20w Stereo Class D Speaker Amplifier With Volume Control
• Manufacturer: Maxim Integrated Products, Inc.

20W Stereo Class D Speaker Amplifier
with Volume Control
ABSOLUTE MAXIMUM RATINGS
PVDD to PGND ....................................................................+16V
V
FB_, SYNCOUT, SYNC, SDA/VOL, ADDR1,
BOOT_ to V
BOOT_ to OUT_........................................................-0.3V to +6V
OUT_ to GND ..........................................-0.3V to (PVDD + 0.3V)
PGND to GND .......................................................-0.3V to +0.3V
Any Other Pin to GND ..............................................-0.3V to +4V
OUT_, Short-Circuit Duration......................................Continuous
Continuous Power Dissipation (T
ELECTRICAL CHARACTERISTICS
(PVDD = 12V, V
OUT_+ and OUT_-, R
spectrum mode, filterless modulation mode, see the Functional Diagrams/Typical Application Circuits. T
erwise noted. Typical values are at T
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 in the operational sections of the specifications is not implied. Exposure to
absolute maximum rating conditions for extended periods may affect device reliability.
2
GENERAL
Speaker Amplifier Supply Voltage
Range
Supply Voltage Range
Quiescent Current
Shutdown Current
Turn-On Time
Common-Mode Bias Voltage
Input Amplifier Output-Voltage
Swing High
Input Amplifier Output-Voltage
Swing Low
Input Amplifier Output Short-
Circuit Current Limit
Input Amplifier Gain-Bandwidth
Product
SPEAKER AMPLIFIERS
Gain
Output Offset
DD
ADDR2 to GND........................................-0.3V to (V
44-Pin Thin QFN (derate 27mW/°C above +70°C,
single-layer board) ......................................................2162mW
_______________________________________________________________________________________
to GND ...........................................................................+4V
PARAMETER
DD
..........................................................-0.3V to +6V
DD
= 3.3V, GND = PGND = 0V, V
L
= ∞, unless otherwise stated, C
A
= +70°C)
A
I
I
PVDDSHDN
SYMBOL
= +25°C.) (Note 1)
VDDSHDN
A
PVDD
I
V
GBW
PVDD
V
V
V
V
VMAX
I
t
BIAS
DD
ON
OH
DD
OL
OS
Inferred from PSRR test
Inferred from PSRR test
Specified as V
connected to 1.5V
Specified as V
connected to 1.5V
Maximum
volume setting
T
MUTE
A
DD
= 25°C
BOOT_
+ 0.3V)
= 0V; max volume setting; all speaker load resistors connected between
= 0.1µF, C
DD
OL
CONDITIONS
Output stage gain
Total gain (Note 2)
– GND, R
– V
Continuous Input Current (PVDD, PGND).............................6.4A
Continuous Output Current (OUT_) ......................................3.2A
Continuous Input Current (except OUT_).........................±20mA
Junction Temperature ......................................................+150°C
Operating Temperature Range ...........................-40°C to +85°C
Storage Temperature Range .............................-65°C to +150°C
Lead Temperature (soldering, 10s) .................................+300°C
44-Pin Thin QFN (derate 37mW/°C above +70°C,
multilayer board) .........................................................2963mW
θ
θ
OH
BIAS
JA
JA
, R
, Single-Layer Board................................................37°C/W
, Multilayer Board ................................................….27°C/W
= 2.2µF, C
L
L
= 2kΩ
= 2kΩ
IN
= 0.47µF, R
MIN
4.5
2.7
IN
A
= 20kΩ, R
= T
TYP
29.5
29.5
±60
200
0.1
0.1
1.5
1.8
±2
20
10
20
20
MIN
to T
F_
MAX
±15
= 20kΩ, spread-
MAX
3.6
14
35
20
1
1
, unless oth-
UNITS
MHz
mA
mV
mV
mA
mV
ms
dB
µA
V
V
V