MAX9768 Maxim Integrated Products, MAX9768 Datasheet - Page 2

• Manufacturer Part Number: MAX9768
• Description: 10W Mono Class D Speaker Amplifier
• Manufacturer: Maxim Integrated Products

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ABSOLUTE MAXIMUM RATINGS
PV
V
SCLK, SDA/VOL to GND ..........................................-0.3V to +4V
FB, SYNCOUT ............................................-0.3V to (V
BOOT_ to OUT_........................................................-0.3V to +4V
OUT_ to GND ...........................................-0.3V to (PV
PGND to GND ......................................................-0.3V to +0.3V
Any Other Pin to GND ..............................................-0.3V to +4V
OUT_ Short-Circuit Duration.......................................Continuous
Continuous Current (PV
Continuous Input Current (Any Other Pin) .......................±20mA
Continuous Input Current (FB_) .......................................±60mA
10W Mono Class D Speaker
Amplifier with Volume Control
ELECTRICAL CHARACTERISTICS
(PV
between OUT+ and OUT-, R
SSM mode. Filterless modulation mode (see the Functional Diagram/Typical Application Circuit ). T
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 Supply Voltage
Range
Supply Voltage Range
Quiescent Current
Shutdown Current
Output Offset
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
Internal Gain
DD
DD
DD
_______________________________________________________________________________________
to GND ..............................................................-0.3V to +4V
to PGND........................................................-0.3V to +16V
= 12V, V
PARAMETER
DD
= 3.3V, GND = PGND = 0V, V
DD
, PGND, OUT_) ..........................2.2A
L
A
= ∞, unless otherwise noted. C
= +25°C.) (Note 1)
SYMBOL
A
I
I
V
PV
GBW
SHDN
I
PVDD
V
V
V
t
V
VMAX
VDD
BIAS
ON
DD
OH
OS
OL
DD
Max volume setting; from FB to amplifier outputs
|(OUT+) - (OUT-)|; excludes external gain
resistors
Inferred from PSRR test
Inferred from PSRR and UVLO test
Filterless modulation
Classic PWM modulation
I
Filterless modulation, V
Filterless modulation, V
MAX9768
MAX9768B
Specified as
V
Specified as
V
SHDN
DD
OL
- GND
- V
SHDN
= I
DD
DD
OH
PVDD
+ 0.3V)
+ 0.3V)
= V
+ I
DD
BIAS
CONDITIONS
DD
, V
, SHDN = GND
R
R
MUTE
= 2.2µF, C1 = C2 = 0.1µF, C
L
L
MUTE
MUTE
= 2kΩ connect to 1.5V
= 2kΩ connect to 1.5V
Continuous Power Dissipation (T
Single-Layer Board:
Multilayer Board:
θ
θ
Operating Temperature Range ...........................-40°C to +85°C
Storage Temperature Range .............................-65°C to +150°C
Lead Temperature (soldering, 10s) ................................+300°C
JA
JA
24-Pin Thin QFN 4mm x 4mm,
(derate 20.8mW/°C above +70°C) .................................1.67W
24-Pin Thin QFN 4mm x 4mm,
(derate 27.8mW/°C above +70°C) .................................2.22W
, Single-Layer Board…...........................................….48°C/W
, Multilayer Board ...................................................….36°C/W
= 0V; Max volume setting; speaker load resistor connected
= V
= 0V, T
DD
, T
A
A
= +25°C
= +25°C
IN
29.27
MIN
4.5
2.7
A
= 0.47µF, R
= T
A
MIN
= +70°C)
TYP
30.1
±60
220
0.5
1.5
3.6
1.8
±2
±2
15
to T
7
4
4
6
IN
MAX
= 20kΩ, R
±12.5
31.00
, unless otherwise
MAX
14.0
14.2
±14
100
3.6
7.6
7.6
50
50
F
UNITS
= 30kΩ,
MHz
mA
mV
mV
mV
mA
ms
µA
dB
V
V
V