MAX98500EWE+T Maxim Integrated Products, MAX98500EWE+T Datasheet

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MAX98500EWE+T

Manufacturer Part Number
MAX98500EWE+T
Description
IC AMP BOOST CLASS D 2.2W 16WLP
Manufacturer
Maxim Integrated Products
Type
Class Dr
Datasheet

Specifications of MAX98500EWE+T

Output Type
1-Channel (Mono)
Max Output Power X Channels @ Load
2.2W x 1 @ 8 Ohm
Voltage - Supply
2.5 V ~ 5.5 V
Features
Depop, Differential Inputs, Short-Circuit and Thermal Protection, Shutdown
Mounting Type
Surface Mount
Package / Case
16-WLP
Lead Free Status / RoHS Status
Lead free / RoHS Compliant
19-5189; Rev 0; 5/10
The MAX98500 is a high-efficiency, Class D audio ampli-
fier that features an integrated boost converter to deliver
a constant output power over a wide range of battery
supply voltages.
The boost converter operates at 2MHz, requiring only a
small (2.2FH) external inductor and capacitor.
The automatic level control has a battery tracking func-
tion that reduces the output swing as the supply voltage
drops, preventing collapse of battery voltage.
The amplifier has differential inputs and an internal fully
differential design. The MAX98500 also features three
gain settings (6dB, 15.5dB, and 20dB) that are select-
able with a logic input.
The MAX98500 is available in a small, 0.5mm pitch
16-bump WLP package (2.1mm x 2.1mm). It is specified
over the extended -40NC to +85NC temperature range.
For pricing, delivery, and ordering information, please contact Maxim Direct at 1-888-629-4642,
or visit Maxim’s website at www.maxim-ic.com.
Cell Phones
Smartphones
GPS Devices
Mobile Internet Devices
Active Speaker Accessories
_______________________________________________________________ Maxim Integrated Products 1
BATTERY
General Description
SDSPK C3
SDBST D4
RKNEE B3
GAIN B2
INN
INP D2
Applications
D3
Boosted 2.2W Class D Amplifier
with Automatic Level Control
DIFFERENTIAL
CONTROL
C4
INPUT
AGND
A4
BSTPGND
B4
S Boosted Class D Output
S Integrated Automatic Level Control
S Output Power
S Wide 2.5V to 5.5V Supply Voltage Range
S Undervoltage Lockout Protection
S High Total Efficiency of 87%
S High Step-Up Switching Frequency (2MHz)
S Active Emission Limiting for Low EMI
+Denotes a lead(Pb)-free/RoHS-compliant package.
Typical Application Circuit appears at end of data sheet.
GAIN
MAX98500EWE+
V
BOOST CONVERTER
BAT
2.2W into 8I, 10% THD+N
1.7W into 8I, 1% THD+N
MAX98500
PART
D1, C2
SPKPGND
A3
OUTPUT
STAGE
LX
Simplified Block Diagram
-40NC to +85NC
TEMP RANGE
C1
A2
A1
B1
Ordering Information
SPKN
PVDD
SPKP
V
CCOUT
PIN-PACKAGE
Features
16 WLP

Related parts for MAX98500EWE+T

MAX98500EWE+T Summary of contents

Page 1

... SDBST D4 SDSPK C3 GAIN B2 RKNEE B3 INP D2 INN _______________________________________________________________ Maxim Integrated Products 1 For pricing, delivery, and ordering information, please contact Maxim Direct at 1-888-629-4642, or visit Maxim’s website at www.maxim-ic.com. Boosted 2.2W Class D Amplifier with Automatic Level Control S Boosted Class D Output S Integrated Automatic Level Control S Output Power 2 ...

Page 2

Boosted 2.2W Class D Amplifier with Automatic Level Control ABSOLUTE MAXIMUM RATINGS V to AGND .........................................................-0.3V to +6V BAT V to BSTPGND, AGND .................................-0.3V to +6V CCOUT PVDD to SPKPGND .................................................-0.3V to +6V BSTPGND, SPKPGND to AGND ......................... -0.3V to ...

Page 3

ELECTRICAL CHARACTERISTICS (continued 3.6V between SPKP and SPKN, A BAT unless otherwise noted. Typical values are at T MAX PARAMETER SYMBOL SPEAKER AMPLIFIER Output Offset Voltage Click-and-Pop Level Output Power (Note 5) ...

Page 4

Boosted 2.2W Class D Amplifier with Automatic Level Control ELECTRICAL CHARACTERISTICS (continued 3.6V between SPKP and SPKN, A BAT unless otherwise noted. Typical values are at T MAX PARAMETER SYMBOL Knee Resistor ...

Page 5

R = ∞ between SPKP and SPKN, A BAT L otherwise noted.) BATTERY CURRENT vs. BATTERY VOLTAGE 5.0 INPUTS AC-COUPLED TO AGND 4.5 SDSPK = SDBST = V 4.0 3.5 3.0 2.5 2.0 1.5 1.0 0.5 0 ...

Page 6

Boosted 2.2W Class D Amplifier with Automatic Level Control (V = 3.6V ∞ between SPKP and SPKN, A BAT L otherwise noted.) THD+N vs. FREQUENCY 68µH LOAD 1.4W OUT 0.1 ...

Page 7

R = ∞ between SPKP and SPKN, A BAT L otherwise noted.) SPEAKER POWER-SUPPLY REJECTION RATIO vs. FREQUENCY PVDD = 200mV RIPPLE P-P INPUTS AC-COUPLED AGND -20 -40 -60 -80 -100 0.01 0.1 1 ...

Page 8

Boosted 2.2W Class D Amplifier with Automatic Level Control (V = 3.6V ∞ between SPKP and SPKN, A BAT L otherwise noted.) EFFICIENCY vs. OUTPUT CURRENT 100 V = 4.2V 98 BAT ...

Page 9

Boosted 2.2W Class D Amplifier TOP VIEW (BUMP SIDE DOWN) BUMP NAME A1 PVDD Speaker Amplifier Power Supply. Bypass to SPKPGND with a 0.1mF capacitor. Boost Converter Output. Connect a 22mF (0805) capacitor between CCOUT BSTPGND. A3 ...

Page 10

Boosted 2.2W Class D Amplifier with Automatic Level Control Detailed Description The MAX98500 is a high-efficiency Class D audio ampli- fier that features an integrated boost converter to deliver a constant output power over a large range of battery supply ...

Page 11

Table 2. Shutdown Configurations BOOST SDBST SDSPK STATUS Low Low Off Low High Off High Low On High High On The MAX98500 features two active-low shutdown inputs (SDSPK and SDBST). Table 2 shows the different shut- down configurations. Click-and-Pop Suppression ...

Page 12

Boosted 2.2W Class D Amplifier with Automatic Level Control Route audio signals on the middle layers of the PCB to allow the ground planes above and below to shield them from RF interference. Ideally the top and bottom layers of ...

Page 13

Supply Bypassing, Layout, and Grounding Proper layout and grounding are essential for optimum performance. Use a large continuous ground plane on a dedicated layer of the PCB to minimize loop areas. Connect AGND and BSTPGND/SPKPGND directly to the ground plane ...

Page 14

Boosted 2.2W Class D Amplifier with Automatic Level Control For the latest package outline information and land patterns www.maxim-ic.com/packages. Note that a “+”, “#”, or “-” in the package code indicates RoHS status only. Package drawings may show ...

Page 15

... Maxim cannot assume responsibility for use of any circuitry other than circuitry entirely embodied in a Maxim product. No circuit patent licenses are implied. Maxim reserves the right to change the circuitry and specifications without notice at any time. Maxim Integrated Products, 120 San Gabriel Drive, Sunnyvale, CA 94086 408-737-7600 2010 Maxim Integrated Products © ...

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