MAX9788EVKIT+ Maxim Integrated Products, MAX9788EVKIT+ Datasheet

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MAX9788EVKIT+

Manufacturer Part Number
MAX9788EVKIT+
Description
EVALUATION KIT FOR MAX9788
Manufacturer
Maxim Integrated Products
Datasheets

Specifications of MAX9788EVKIT+

Amplifier Type
Class G
Output Type
1-Channel (Mono)
Max Output Power X Channels @ Load
2.4W x 1 @ 8 Ohm
Voltage - Supply
2.7 V ~ 5.5 V
Operating Temperature
-40°C ~ 85°C
Board Type
Fully Populated
Utilized Ic / Part
MAX9788
Lead Free Status / RoHS Status
Lead free / RoHS Compliant
The MAX9788 features a mono Class G power amplifier
with an integrated inverting charge-pump power supply
specifically designed to drive the high capacitance of a
ceramic loudspeaker. The charge pump can supply
greater than 700mA of peak output current at 5.5VDC,
guaranteeing an output of 14V
The MAX9788 maximizes battery life by offering high-
performance efficiency. Maxim’s proprietary Class G
output stage provides efficiency levels greater than
Class AB devices without the EMI penalties commonly
associated with Class D amplifiers.
The MAX9788 is ideally suited to deliver the high out-
put-voltage swing required to drive ceramic/piezoelec-
tric speakers.
The device utilizes fully differential inputs and outputs,
comprehensive click-and-pop suppression, shutdown
control, and soft-start circuitry. The MAX9788 is fully spec-
ified over the -40°C to +85°C extended temperature range
and is available in small lead-free 28-pin TQFN (4mm x
4mm) or 20-bump WLP (2mm x 2.5mm) packages.
19-0710; Rev 3; 5/08
Cell Phones
Smartphones
MP3 Players
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.
________________________________________________________________ Maxim Integrated Products
14V
C
C
IN
IN
General Description
P-P
P-P
Personal Media Players
Handheld Gaming
Consoles
Notebook Computers
R
R
IN+
IN-
.
Applications
, Class G Ceramic Speaker Driver
R
R
FB+
FB-
FB+
IN+
IN-
FB-
+
-
GND
V
CC
MAX9788
♦ Integrated Charge-Pump Power Supply—No
♦ 14V
♦ 2.7V to 5.5V Single-Supply Operation
♦ Clickless/Popless Operation
♦ Small Thermally Efficient Packages
+ Denotes a lead-free package.
T = Tape and reel.
G45 indicates protective die coating.
* EP = Exposed pad.
Typical Application Circuit/Functional Diagram and Pin
Configurations appear at end of data sheet.
MAX9788EWP+TG45
MAX9788ETI+
2.7V TO 5.5V
Inductor Required
CLASS G
CPGND
CPV
CHARGE
OUTPUT
STAGE
PUMP
4mm x 4mm 28-Pin TQFN
2mm x 2.5mm 20-Bump WLP
DD
P-P
PART
Voltage Swing into Piezoelectric Speaker
OUT+
OUT-
Simplified Block Diagram
Ordering Information
PIN-PACKAGE
20 WLP
28 TQFN-EP*
-40°C to +85°C
-40°C to +85°C
TEMP RANGE
Features
1

Related parts for MAX9788EVKIT+

MAX9788EVKIT+ Summary of contents

Page 1

... IN- IN ________________________________________________________________ Maxim Integrated Products 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. , Class G Ceramic Speaker Driver ♦ Integrated Charge-Pump Power Supply—No Inductor Required ♦ 14V Voltage Swing into Piezoelectric Speaker P-P ♦ ...

Page 2

Class G Ceramic Speaker Driver P-P ABSOLUTE MAXIMUM RATINGS (Voltages with respect to GND CPV .............................................................-0. ...............................................................-6V to +0. CPGND..................................................................-0.3V to +0.3V OUT+, OUT-...................................(SV SS IN+, IN-, ...

Page 3

P-P ELECTRICAL CHARACTERISTICS (continued 3.6V, V SHDN CC CPVDD GND 10µF; load connected between OUT+ and OUT-, Z noted. Typical values are +25°C.) (Notes PARAMETER SYMBOL Output ...

Page 4

Class G Ceramic Speaker Driver P 3.6V, V SHDN CC CPVDD GND 10µ 1µF + 10Ω; load terminated between OUT+ and OUT-, unless otherwise stated Typical values are ...

Page 5

P 3.6V, V SHDN CC CPVDD GND 10µ 1µF + 10Ω; load terminated between OUT+ and OUT-, unless otherwise stated Typical values are +25°C.) (Notes 1, ...

Page 6

Class G Ceramic Speaker Driver P 3.6V, V SHDN CC CPVDD GND 10µ 1µF + 10Ω; load terminated between OUT+ and OUT-, unless otherwise stated Typical values are ...

Page 7

P-P Detailed Description The MAX9788 Class G power amplifier with inverting charge pump is the latest in linear amplifier technology. The Class G output stage offers improved performance over a Class AB amplifier while increasing efficiency to extend battery ...

Page 8

Class G Ceramic Speaker Driver P-P Inverting Charge Pump The MAX9788 features an integrated charge pump with an inverted supply rail that can supply greater than 700mA over the positive 2.7V to 5.5V supply range. In the case ...

Page 9

P-P Driving a Ceramic Speaker Applications that require thin cases, such as today’s mobile phones, demand that external components have a small form factor. Dynamic loudspeakers that use a cone and voice coil typically cannot conform to the height ...

Page 10

Class G Ceramic Speaker Driver P-P The output capacitor value and ESR directly affect the ripple Increasing C2 reduces output ripple. SS Likewise, decreasing the ESR of C2 reduces both rip- ple and output resistance. ...

Page 11

Class G Ceramic Speaker Driver P-P Typical Application Circuit/Functional Diagram SHDN CONTROL SIGNAL 20kΩ 12 (B4 IN+ 10kΩ 0.47μF 10kΩ 10 (B5) IN+ 9 (A5 FB- ...

Page 12

Class G Ceramic Speaker Driver P-P TOP VIEW + SHDN 1 N.C. 2 C1P 3 CPV 4 DD MAX9788 N. N.C. EP* FB- 7 THIN QFN *EXPOSED PAD. Package Information For the latest package outline information ...

Page 13

... 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 ____________________ 13 © 2008 Maxim Integrated Products ...

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