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MAX4364ESA+T

P1-P3P4-P6P7-P9P10-P12P13-P14
General Description
The MAX4364/MAX4365 are bridged audio power
amplifiers intended for portable audio devices with
internal speakers. The MAX4364 is capable of deliver-
ing 1.4W from a single 5V supply and 500mW from a
single 3V supply into an 8Ω load. The MAX4365 is
capable of delivering 1W from a single 5V supply and
450mW from a single 3V supply into an 8Ω load. The
MAX4364/MAX4365 feature 0.04% THD+N at 1kHz,
68dB PSRR at 217Hz, and only 10nA of supply current
in shutdown mode.
The MAX4364/MAX4365 bridged outputs eliminate the
need for output-coupling capacitors, minimizing exter-
nal component count. The MAX4364/MAX4365 also
include internal DC bias generation, clickless operation,
short-circuit and thermal-overload protection. Both
devices are unity-gain stable, with the gain set by two
external resistors.
The MAX4364 is available in a small 8-pin SO package.
The MAX4365 is available in tiny 8-pin TDFN (3mm
3mm 0.8mm) and µMAX
®
packages.
Applications
Cellular Phones
PDAs
Two-Way Radios
General-Purpose Audio
Features
o 1.4W into 8Ω Load (MAX4364)
o 1W into 8Ω Load (MAX4365)
o 0.04% THD+N at 1kHz
o 68dB PSRR at 217Hz
o 2.7V to 5.5V Single-Supply Operation
o 5mA Supply Current
o Low-Power, 10nA Shutdown Mode
o Pin Compatible with the LM4861/LM4862/LM4864
(MAX4364)
o Clickless Power-Up and Shutdown
o Thermal-Overload and Short-Circuit Protection
o Available in TDFN, µMAX, and SO Packages
MAX4364/MAX4365
1.4W and 1W, Ultra-Small, Audio Power
Amplifiers with Shutdown
________________________________________________________________
Maxim Integrated Products
1
Ordering Information
19-2387; Rev 4; 5/11
For pricing, delivery, and ordering information, please contact Maxim/Dallas Direct! at
1-888-629-4642, or visit Maxim’s website at www.maxim-ic.com.
PART TEMP RANGE PIN-PACKAGE
TOP
MARK
MAX4364ESA+ -40°C to +85°C 8 SO —
MAX4365EUA+ -40°C to +85°C 8 µMAX —
MAX4365ETA+ -40°C to +85°C 8 TDFN-EP* ACD
V
CC
V
CC
6
2
3
4
1
8
5
7
OUT-
IN-
IN+
BIAS
C
BIAS
C
IN
R
IN
R
F
50kΩ
50kΩ
10kΩ
10kΩ
AUDIO
INPUT
CLICKLESS/POPLESS
SHUTDOWN CONTROL
GND
SHDN
OUT+
MAX4364
Typical Application Circuit/Functional Diagram
Pin Configurations appear at end of data sheet.
*
EP = Exposed pad.
+
Denotes a lead(Pb)-free/RoHS-compliant package.
µMAX is a registered trademark of Maxim Integrated Products, Inc.
MAX4364/MAX4365
1.4W and 1W, Ultra-Small, Audio Power
Amplifiers with Shutdown
2 _______________________________________________________________________________________
ABSOLUTE MAXIMUM RATINGS
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.
V
CC
, OUT_ to GND...................................................-0.3V to +6V
IN+, IN-, BIAS, SHDN to GND....................-0.3V to (V
CC
+ 0.3V)
Output Short Circuit (OUT+ to OUT-) (Note 1)...........Continuous
Continuous Power Dissipation (T
A
= +70°C)
8-Pin µMAX (derate 4.8mW/°C above +70°C) ..............388mW
8-Pin TDFN (derate 24.4mW/°C above +70°C) ..........1951mW
8-Pin SO (derate 7.8mW/°C above +70°C)...................623mW
Junction Temperature......................................................+150°C
Operating Temperature Range ...........................-40°C to +85°C
Storage Temperature Range .............................-65°C to +150°C
Lead Temperature (soldering, 10s) .................................+300°C
Soldering Temperature (reflow) .......................................+260°C
ELECTRICAL CHARACTERISTICS—5V
(V
CC
= 5V, R
L
= ∞, C
BIAS
= 1µF to GND, V
SHDN
= V
GND
, T
A
= +25°C, unless otherwise noted.) (Note 3)
PARAMETER SYMBOL CONDITIONS MIN TYP MAX UNITS
Supply Voltage Range V
CC
Inferred from PSRR test 2.7 5.5 V
MAX4364 7 13
M AX 4364, T
A
= T
M IN
to T
M AX
17
M AX 4365 5 8
Supply Current I
CC
(Note 4)
M AX 4365, T
A
= T
M IN
to T
M AX
11
mA
Shutdown Supply Current I
SHDN
V
SHDN
= V
CC
0.01 4 µA
T
A
= +25°C
V
CC
x
0.7
V
IH
T
A
= -40°C to +85°C
(Note 5)
V
CC
x
0.7
T
A
= +25°C
V
CC
x
0.3
SHDN Threshold
V
IL
T
A
= -40°C to +85°C
(Note 5)
V
CC
x
0.3
V
Common-Mode Bias Voltage V
BIAS
(Note 6)
V
CC
/2 -
5%
V
CC
/2
V
CC
/2
+ 5%
V
Output Offset Voltage V
OS
IN- = OUT+, IN+ = BIAS (Note 7) ±1 ±10 mV
V
CC
= 2.7V to 5.5V DC 55 75
217Hz 68
Power-Supply Rejection Ratio PSRR
V
RIPPLE
= 200mV
P-P
,
R
L
= 8Ω
1kHz 58
dB
MAX4364 1200 1400
Output Power P
OUT
R
L
= 8Ω, THD+N = 1%,
f
IN
= 1kHz (Note 8)
MAX4365 800 1000
mW
Note 1: Continuous power dissipation must also be observed.
PACKAGE THERMAL CHARACTERISTICS (Note 2)
Note 2: 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
.
µMAX
Junction-to-Ambient Thermal Resistance (
θ
JA
) ......206.3°C/W
Junction-to-Case Thermal Resistance (
θ
JC
)................42°C/W
TDFN
Junction-to-Ambient Thermal Resistance (
θ
JA
) ...........41°C/W
Junction-to-Case Thermal Resistance (
θ
JC
)..................8°C/W
SO
Junction-to-Ambient Thermal Resistance (
θ
JA
) ......128.4°C/W
Junction-to-Case Thermal Resistance (
θ
JC
)................36°C/W
MAX4364/MAX4365
1.4W and 1W, Ultra-Small, Audio Power
Amplifiers with Shutdown
_______________________________________________________________________________________ 3
ELECTRICAL CHARACTERISTICS—3V
(V
CC
= 3V, R
L
= ∞, C
BIAS
= 1µF to GND, V
SHDN
= V
GND
, T
A
= +25°C, unless otherwise noted.) (Note 3)
PARAMETER SYMBOL CONDITIONS MIN TYP MAX UNITS
MAX4364 6
Supply Current I
CC
(Note 4)
MAX4365 4.5
mA
Shutdown Supply Current I
SHDN
V
SHDN
= V
CC
10 nA
MAX4364 400 500
Output Power P
OUT
R
L
= 8Ω, THD+N =
1%, f
IN
= 1kHz
(Note 8)
MAX4365 350 450
mW
MAX4364,
P
OUT
= 400mW
0.05
Total Harmonic Distortion Plus
Noise
THD + N
A
V
= -2V/V, R
L
= 8Ω,
f
IN
= 1kHz (Notes 5, 9)
MAX4365,
P
OUT
= 400mW
0.08
%
Note 3: All specifications are 100% tested at T
A
= +25°C.
Note 4: Quiescent power-supply current is specified and tested with no load on the outputs. Quiescent power-supply current
depends on the offset voltage when a practical load is connected to the amplifier.
Note 5: Guaranteed by design, not production tested.
Note 6: Common-mode bias voltage is the voltage on BIAS and is nominally V
CC
/2.
Note 7: Maximum differential-output offset voltage is tested in a unity-gain configuration. V
OS
= V
OUT+
- V
OUT-
.
Note 8: Output power is specified by a combination of a functional output-current test, and characterization analysis.
Note 9: Measurement bandwidth for THD+N is 22Hz to 22kHz.
Note 10: Extended short-circuit conditions result in a pulsed output.
ELECTRICAL CHARACTERISTICS—5V (continued)
(V
CC
= 5V, R
L
= ∞, C
BIAS
= 1µF to GND, V
SHDN
= V
GND
, T
A
= +25°C, unless otherwise noted.) (Note 3)
PARAMETER SYMBOL CONDITIONS MIN TYP MAX UNITS
MAX4364,
P
OUT
= 1W
0.04
Total Harmonic Distortion Plus
Noise
THD+N
A
V
= -2V/V, R
L
= 8Ω,
f
IN
= 1kHz (Notes 5, 9)
MAX4365,
P
OUT
= 750mW
0.1
%
Noise f
IN
= 10kHz, BW = 22Hz to 22kHz 12 µV
RMS
Short-Circuit Current I
SC
OUT+ to OUT- (Note 10) 600 mA
Thermal Shutdown Threshold 160
o
C
Thermal Shutdown Hysteresis 15
o
C
T
A
= +25°C 50
Power-Up Time t
PU
C
BIAS
= 0.22µF, T
A
= -40°C to +85°C
(Note 5)
14 35
ms
Shutdown Time t
SHDN
10 µs
T
A
= +25°C 50
Enable Time from Shutdown t
ENABLE
C
BIAS
= 0.22µF, T
A
= -40°C to +85°C
(Note 5)
12 35
ms
P1-P3P4-P6P7-P9P10-P12P13-P14

MAX4364ESA+T

Mfr. #:
Buy MAX4364ESA+T
Manufacturer:
Maxim Integrated
Description:
Audio Amplifiers 1.4W/1W Audio Power Amplifier
Lifecycle:
New from this manufacturer.
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