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MAX98309/MAX98310

Mono 1.4W Class AB Audio Amplifiers

VDD to GND............................................................... -0.3V to 6V

SHDN to GND ........................................................... -0.3V to 6V

All Other Pins to GND ...............................-0.3V to (VDD + 0.3V)

Continuous Current

VDD, GND, OUT_....................................................... Q750mA

IN_, SHDN, BIAS, GAIN, TON......................................... Q20mA

OUT_ Short Circuit to GND or VDD Duration ............Continuous

OUT+ to OUT- Short Circuit Duration .......................Continuous

Continuous Power Dissipation (TA = +70NC)

WLP (derate 11.9mW/NC above +70NC)......................848mW

Junction Temperature .....................................................+150NC

Operating Temperature Range.......................... -40NC to +85NC

Storage Temperature Range............................ -65NC to +150NC

Soldering Temperature (reflow).......................................+260NC

ABSOLUTEMAXIMUMRATINGS

Note1: Package thermal resistances were obtained using the method described in JEDEC specification JESD51-7, using a four-

layer board. For detailed information on package thermal considerations, refer to www.maxim-ic.com/thermal-tutorial.

ELECTRICALCHARACTERISTICS

(VDD = 3.7V, VGND = 0V, SHDN = VDD, GAIN = VDD (0dB), CBIAS = 0.1µF, CIN = 0.47µF, no load: RIN = RF = 10kI (MAX98309),

TA = TMIN to TMAX. Typical values are at TA = +25°C, unless otherwise noted.) (Note 2)

PACKAGETHERMALCHARACTERISTICS (Note1)

WLP

Junction-to-Ambient Thermal Resistance (BJA)......... 94°C/W

Junction-to-Case Thermal Resistance (BJC) ...............41°C/W

Stresses beyond those listed under “Absolute Maximum Ratings” may cause permanent damage to the device. These are stress ratings only, and functional opera-

tion 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.

PARAMETER

SYMBOL

CONDITIONS

MIN

TYP

MAX

UNITS

Supply Voltage Range

VDD

Guaranteed by PSRR test

2.5

5.5

V

Undervoltage Lockout

UVLO

VDD falling

1.8

2.3

V

Quiescent Supply Current

IVDD

SHDN = VDD

VDD = 3.7V

1.2

mA

VDD = 5V

1.9

1.8

Shutdown Supply Current

IVDD_SD VSHDN = 0V, TA = +25NC

2

3

F

A

Turn-On Time

tON

MAX98309 shutdown to

full operation

TON = GND

10

22.8

ms

TON = VDD

100

MAX98310 shutdown to full operation

5.7

11.5

Gain

AV

MAX98310

GAIN = VDD

-0.25

0

+0.25

dB

GAIN = GND

2.75

3

3.25

GAIN = unconnected

5.75

6

6.25

GAIN = BIAS

8.75

9

9.25

Gain Selection Threshold

MAX98310

GAIN = VDD

0.80 x

VDD

V

GAIN = GND

0.05 x

VDD

GAIN = unconnected

0.16 x

VDD

0.24 x

VDD

GAIN = BIAS

0.35 x

VDD

0.69 x

VDD