max9791 Maxim Integrated Products, Inc., max9791 Datasheet - Page 2

• Manufacturer Part Number: max9791
• Description: Windows Vista-compliant Class D Speaker Amplifiers With Directdrive Headphone Amplifiers
• Manufacturer: Maxim Integrated Products, Inc.

Windows Vista-Compliant Class D Speaker
Amplifiers with DirectDrive Headphone Amplifiers
ABSOLUTE MAXIMUM RATINGS
Supply Voltage
GND to PGND, CPGND ......................................................±0.3V
CPVSS, C1N to GND ............................................-6.0V to + 0.3V
HPL, HPR to CPVSS ...........................................-0.3V to lower of
HPL, HPR to HPVDD..................................+0.3V to the higher of
COM, SENSE........................................................-0.3V to + 0.3V
Any Other Pin ..........................................-0.3V to (AVDD + 0.3V)
Duration of Short Circuit between OUT_+, OUT_- and GND,
Duration of Short Circuit between LDO_OUT and AVDD,
Duration of Short Circuit between HPR, HPL and
Continuous Current (PVDD, OUT_+, OUT_-, PGND)............1.7A
Continuous Current (C1N, C1P, CPVSS, AVDD, HPVDD,
ELECTRICAL CHARACTERISTICS
(V
wise specified. R
unless otherwise 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
Note 1: If short is present at power-up.
Note 2: Package thermal resistances were obtained using the method described in JEDEC specification JESD51-7, using a four-layer
GENERAL
Supply Voltage
Headphone Supply Voltage
Undervoltage Lockout
Quiescent Current
Shutdown Current
Bias Voltage
Shutdown to Full Operation
Overtemperature Threshold
AVDD
(AVDD, PVDD, HPVDD to GND)........................-0.3V to +6.0V
PGND, AVDD, or PVDD..........................................Continuous
GND (Note 1) .........................................................Continuous
GND .......................................................................Continuous
LDO_OUT, HPR, HPL) ..................................................850mA
_______________________________________________________________________________________
= V
board. For detailed information on package thermal considerations, refer to www.maxim-ic.com/thermal-tutorial.
PARAMETER
PVDD
IN1
= V
= 20kΩ (A
HPVDD
= 5V, V
(HPVDD - CPVSS + 0.3V) and +9V
(CPVSS - HPVDD - 0.3V) and -9V
VSPKR
GND
SYMBOL
= 12dB), R
V
I
I
V
I
V
AVDD
PVDD
UVLO
HPVDD
I
V
HPVDD
SHDN
AVDD
PVDD
= V
t
BIAS
ON
PGND
+
+
,
A
= +25°C.) (Note 3)
IN2
Guaranteed by PSRR test
Guaranteed by PSRR test
HP_INR, HP_INL, SPKR_INR, SPKR_INL
= V
= 40.2kΩ (A
SPKR_EN
CPGND
1
1
0
0
1
= 0, I
VHP
CONDITIONS
LDO_OUT
HP_EN
= 0dB), C
Continuous Input Current (All Other Pins) ........................±20mA
Continuous Power Dissipation (T
ESD Protection, Human Body Model ...................................±2kV
Operating Temperature Range ...........................-40°C to +85°C
Junction Temperature ......................................................+150°C
Storage Temperature Range .............................-65°C to +150°C
Lead Temperature (soldering, 10s) .................................+300°C
28-Pin Thin QFN Single-Layer Board (derate 20.8mW/°C
Junction-to-Ambient Thermal Resistance (θ
Junction-to-Case Thermal Resistance (θ
28-Pin Thin QFN Multilayer Board (derate 28.6mW/°C
Junction-to-Ambient Thermal Resistance (θ
Junction-to-Case Thermal Resistance (θ
0
1
0
1
0
above +70°C)..........................................................1667mW
(Note 2) .....................................................................40°C/W
(Note 2) ....................................................................2.7°C/W
above +70°C)..........................................................2286mW
(Note 2) .....................................................................35°C/W
(Note 2) ....................................................................2.7°C/W
= 0, C
IN1
= 470nF, C
LDO_EN
LDO
1
0
0
0
0
= 2µF, C1 = C2 = 1µF. R
IN2
MIN
= C
4.5
2.7
COM
A
= +70°C)
+150
TYP
= 1µF, T
10.5
14.4
250
4.4
0.1
0.4
0
JC
JC
L
)
)
JA
JA
= ∞, unless other-
A
MAX
2.65
400
5.5
5.5
)
)
= T
15
21
6
1
MIN
to T
UNITS
mA
mA
mA
ms
µA
µA
°C
V
V
V
V
MAX
,