MAX9788 14VP-P, Class G Ceramic Speaker Driver

Description

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_P-P.

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 output-voltage swing required to drive ceramic/piezoelectric speakers.

The device utilizes fully differential inputs and outputs, comprehensive click-and-pop suppression, shutdown control, and soft-start circuitry. The MAX9788 is fully specified 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.

Key Features

Applications/Uses

Integrated Charge-Pump Power Supply—No Inductor Required
14V_P-P Voltage Swing into Piezoelectric Speaker
2.7V to 5.5V Single-Supply Operation
Clickless/Popless Operation
Small Thermally Efficient Packages
- 4mm x 4mm 28-Pin TQFN
- 2mm x 2.5mm 20-Bump WLP

	Cellular Phones
	Handheld Gaming Consoles
	MP3 Players
	Notebook Computers
	Personal Media Players
	Smartphones

Key Specifications: Speaker Amplifiers

Part Number

Class

Speaker Amp. V_CC (min) (V)

Speaker Amp. V_CC (max) (V)

Speaker Amp. I_CC (typ) (mA)

P_OUT into 8Ω @ 1% THD+N (W)

P_OUT into 8Ω @ 10% THD+N (W)

Output Voltage Swing (Vp-p)

Speaker Amp. Half Pwr. THD+N (%)

SNR, A-weighted (dB)

PSRR (db)

Speaker Amp. External Gain

Speaker Amp. Fixed Gain (min) (V/V)

Speaker Amp. Fixed Gain (max) (V/V)

Number of Channels

RoHS Available

Package

Smallest Available Package (max w/pins) (mm²)

Price^**

MAX9788

Boosted/G

2.7

5.5

2.4

2.8

0.07

108

Yes

THIN QFN/28
WLP/18

$0.80 @ 1k

See All Speaker Amplifiers (29)

Notes:
^**This pricing is BUDGETARY, for comparing similar parts. Prices are in U.S. dollars and subject to change. Quantity pricing may vary substantially and international prices may differ due to local duties, taxes, fees, and exchange rates. For volume-specific prices and delivery, please see the price and availability page or contact an authorized distributor.

Ordering Information

Notes:

Other options and links for purchasing parts are listed at: http://www.maxim-ic.com/sales.
Didn't Find What You Need? Ask our applications engineers. Expert assistance in finding parts, usually within one business day.
Part number suffixes: T or T&R = tape and reel; + = RoHS/lead-free; # = RoHS/lead-exempt. More: SeeFull Data Sheet or Part Naming Conventions.
* Some packages have variations, listed on the drawing. "PkgCode/Variation" tells which variation the product uses. Note that "+", "#", "-" in the part number suffix describes RoHS status. Package drawings may show a different suffix character.

Devices: 1-3 of 3

MAX9788

Free
Sample

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Package:	TYPE PINS FOOTPRINT
	DRAWING CODE/VAR *

Temp

RoHS/Lead-Free?
Materials Analysis

MAX9788ETI+

THIN QFN;28 pin;17 mm²
Dwg: 21-0139H (PDF)
Use pkgcode/variation: T2844+1*

-40°C to +85°C

RoHS/Lead-Free: Lead Free
Materials Analysis

MAX9788ETI+T

THIN QFN;28 pin;17 mm²
Dwg: 21-0139H (PDF)
Use pkgcode/variation: T2844+1*

-40°C to +85°C

RoHS/Lead-Free: Lead Free
Materials Analysis

MAX9788EWP+TG45

WLP;18 pin;
Dwg: 21-0059A (PDF)
Use pkgcode/variation: W202A2+1*

-40°C to +85°C

RoHS/Lead-Free: Lead Free
Materials Analysis

More Information

	New Product Press Release 2007-01-29
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