MAX4295EEE datasheet(2/18 Pages) MAXIM

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Mono/Stereo 2W Switch-Mode (Class-D)

Audio Power Amplifiers

_______________________________________________________________________________________

ABSOLUTE MAXIMUM RATINGS

ELECTRICAL CHARACTERISTICS

(VCC = PVCC = +5V, SHDN = VCC, FS1 = GND, FS2 = VCC (fOSC = 250kHz), input amplifier gain = -1V/V, TA = TMIN to TMAX, unless

otherwise noted. Typical values are TA = +25°C.) (Note 1)

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.

VCC, PVCC to GND or PGND....................................-0.3V to +6V

PGND to GND.....................................................................±0.3V

PVCC to VCC .......................................................................±0.3V

VCM, SS, AOUT_, IN_ ................................-0.3V to (VCC + 0.3V)

SHDN, FS1, FS2 .......................................................-0.3V to +6V

OUT_ _ .....................................................-0.3V to (PVCC + 0.3V)

Op Amp Output Short-Circuit

Duration (AOUT_) .......Indefinite Short Circuit to Either Supply

H-Bridge Short-Circuit

Duration (OUT_ _) .............Continuous Short Circuit to PGND,

PVCC or between OUT+_ & OUT-_

Continuous Power Dissipation (TA = +70°C)

16-Pin QSOP (derate 8.30mW/°C above +70°C)........667mW

24-Pin SSOP (derate 9.50mW/°C above +70°C) ........762mW

16-Pin Narrow SO

(derate 9.52mW/°C above +70°C) ..........................696mW

24-Pin Wide SO

(derate 11.76mW/°C above +70°C) ........................941mW

Operating Temperature Range

MAX4295E__/MAX4297E__ ............................-40°C to +85°C

Junction Temperature ......................................................+150°C

Storage Temperature Range .............................-65°C to +150°C

Lead Temperature (soldering, 10s) .................................+300°C

PARAMETER

CONDITIONS

MIN

TYP

MAX

UNITS

GENERAL

Supply Voltage Range

(Note 2)

2.7

5.5

MAX4295

2.8

Quiescent Supply Current

Output load not

connected

MAX4297

4.6

MAX4295

1.5

Shutdown Supply Current

SHDN = GND

MAX4297

2.5

µA

Voltage at VCM Pin

0.285

VCC

0.3

VCC

0.315

VCC

FS1 = GND, FS2 = GND

105

125

145

FS1 = GND, FS2 = VCC

210

250

290

FS1 = VCC, FS2 = GND

420

500

580

PWM Frequency

FS1 = VCC, FS2 = VCC

840

1000

1160

kHz

PWM Frequency Change with

VCC

VCC = 2.7V to 5.5V

±1

±3

kHz/V

VIN = 0.06

× VCC

10.2

13.8

VIN = 0.30

× VCC

49.2

50.8

Duty Cycle

VIN = 0.54

× VCC

86.2

89.8

Duty Cycle Change with VCC

VIN = 0.3

× VCC, VCC = 2.7V to 5.5V

±0.02

±0.15

%/V

VCC = 5V

0.25

0.5

Switch On-Resistance

(each power device)

IOUT = 150mA

VCC = 2.7V

0.35

1.0

Ω

H-Bridge Output Leakage

SHDN = GND

±5

µA

H-Bridge Current Limit

Soft-Start Capacitor Charging

Current

VSS = 0

0.75

1.35

1.95

µA

Undervoltage Lockout

1.8

2.2

2.6

Thermal Shutdown Trip Point

145

°C

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