19-2387; Rev 1; 10/02
1.4W and 1W, Ultra-Small, Audio Power
Amplifiers with Shutdown
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 8鈩?load. The MAX4365 is
capable of delivering 1W from a single 5V supply and
450mW from a single 3V supply into an 8鈩?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 thin QFN
(3mm
鉁?/div>
3mm
鉁?/div>
0.8mm) and 碌MAX packages.
o
1.4W into 8鈩?Load (MAX4364)
o
1W into 8鈩?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 Thin QFN, 碌MAX, and SO Packages
Features
MAX4364/MAX4365
Ordering Information
PART
MAX4364ESA
MAX4365EUA
MAX4365ETA
TEMP RANGE
-40擄C to +85擄C
-40擄C to +85擄C
-40擄C to +85擄C
PIN-PACKAGE
8 SO
8 碌MAX
8 Thin QFN-EP*
TOP
MARK
鈥?/div>
鈥?/div>
ACD
Applications
Cellular Phones
PDAs
Two-Way Radios
General-Purpose Audio
*EP
= Exposed paddle.
Pin Configurations appear at end of data sheet.
Typical Application Circuit/Functional Diagram
V
CC
6
V
CC
50k鈩?/div>
2 BIAS
OUT- 8
C
BIAS
50k鈩?/div>
CLICKLESS/POPLESS
SHUTDOWN CONTROL
SHDN 1
3 IN+
C
IN
AUDIO
INPUT
R
IN
10k鈩?/div>
10k鈩?/div>
OUT+ 5
4 IN-
MAX4364
GND
R
F
7
________________________________________________________________
Maxim Integrated Products
1
For pricing, delivery, and ordering information, please contact Maxim/Dallas Direct! at
1-888-629-4642, or visit Maxim鈥檚 website at www.maxim-ic.com.
MAX4364 PDF文件相關型號
MAX4364ESA,MAX4364-MAX4365,MAX4365,MAX4365ETA,MAX4365EUA
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