MAX9791AETI+T Maxim Integrated Products, MAX9791AETI+T Datasheet - Page 28

• Manufacturer Part Number: MAX9791AETI+T
• Description: IC AMP AUDIO 2.2W STER D 28TQFN
• Manufacturer: Maxim Integrated Products
• Series: DirectDrive™r
• Type: Class Dr

Specifications of MAX9791AETI+T

• Output Type: 2-Channel (Stereo) with Stereo Headphones and Subwoofer
• Max Output Power X Channels @ Load: 2.2W x 2 @ 4 Ohm; 180mW x 2 @ 32 Ohm
• Voltage - Supply: 4.5 V ~ 5.5 V
• Features: Depop, LDO, Short-Circuit and Thermal Protection, Shutdown
• Mounting Type: Surface Mount
• Package / Case: 28-TQFN Exposed Pad
• Lead Free Status / RoHS Status: Lead free / RoHS Compliant

Windows Vista-Compliant Class D Speaker
Amplifiers with DirectDrive Headphone Amplifiers
28
TO CODEC
______________________________________________________________________________________
NOTE: LOGIC PINS CONFIGURED FOR:
LDO_EN = 1, LDO ENABLED
SPKR_EN = 0, SPEAKER AMPLIFIERS ENABLED
HP_EN = 1, HEADPHONE AMPLIFIER ENABLED
1.0µF
µC BEEP INPUT
CIN1
C
C
C
C
IN3
IN1
C
IN3
IN2
IN2
1.0µF
C
2.7V TO 5.5V
R
R
COM
RIN1
RIN1
IN2
R
IN2
R
IN3
IN3
R
COM
1.0µF
SPKR_INR
SPKR_INL
LDO_OUT 6
SPKR_EN 27
LDO_EN 8
HP_INR 2
HP_INL 3
HP_EN 22
BEEP 21
COM
1.0µF
28
4
1
0.1µF
LDO BLOCK
CONTROL
20kΩ
20kΩ
5
GND
AVDD
MAX9791A/MAX9791B Block Diagram
7
AMPLIFIER
20, 23
CLASS D
STEREO
PGND
PVDD
2.7V TO 5.5V
17, 26
40.2kΩ
0.1µF
MAX9791A
MAX9791B
TO HPVDD
40.2kΩ
40.2kΩ
CHARGE
TO HPVDD
PUMP
TO CPVSS
CPVSS
12
C2
1.0µF
10µF
16
19
18
24
25
10
15
14
13
11
9
OUTL+
HPL
HPR
SENSE
HPVDD
C1P
CPGND
C1N
OUTL-
OUTR+
OUTR-
C1
1.0µF
2.7V TO 5.5V
C3
10µF