MAX4366 Datasheet, PDF (1/18 Pages) Maxim Integrated Products – 330mW, Ultra-Small, Audio Power Amplifiers with Shutdown

19-2338; Rev 2; 12/02
330mW, Ultra-Small, Audio Power Amplifiers
with Shutdown
General Description
The MAX4366/MAX4367/MAX4368 are bridged audio
power amplifiers intended for devices with internal
speakers and headsets. The MAX4366/MAX4367/
MAX4368 are capable of delivering 330mW of continu-
ous power into a 32Ω load, or 200mW into a 16Ω load
with 1% THD+N from a single 5V supply.
The MAX4366/MAX4367/MAX4368 bridged outputs elimi-
nate the need for output-coupling capacitors minimizing
external component count. The MAX4366/MAX4367/
MAX4368 also feature a low-power shutdown mode,
clickless power-up/power-down and internal DC bias
generation. The MAX4366 is a unity-gain stable, program-
mable gain amplifier. The MAX4367/MAX4368 feature
internally preset gains of 2V/V and 3V/V, respectively.
All devices are available in space-saving 8-pin SOT23,
thin QFN and µMAX packages, and an 8-bump chip-
scale package (UCSP™).
Applications
Cellular Phones
Two-Way Radios
PDAs
Headphones
Headsets
General-Purpose Audio
Pin Configurations
Features
o Drives 330mW into 32Ω (200mW into 16Ω)
o 0.02% THD+N at 1kHz (120mW into 32Ω)
o Internal Bridged Configuration
o No Output-Coupling Capacitors
o 2.3V to 5.5V Single-Supply Operation
o 2mA Supply Current
o Low-Power Shutdown Mode
o Clickless Power-Up and Shutdown
o Thermal Overload Protection
o Available in SOT23, Thin QFN, µMAX, and UCSP
Packages
Ordering Information
PART
TEMP RANGE
PIN/BUMP-
PACKAGE
TOP
MARK
MAX4366EBL-T -40°C to +85°C
MAX4366EKA-T -40°C to +85°C
MAX4366EUA -40°C to +85°C
MAX4366ETA -40°C to +85°C
8 UCSP-8
8 SOT23-8
8 µMAX
8 Thin QFN-EP*
AAK
AAIO
—
AAC
*EP = Exposed paddle.
Ordering Information continued at end of data sheet.
Selector Guide and Functional Diagrams appear at end of
data sheet.
Typical Operating Circuit
TOP VIEW
(BUMP SIDE
DOWN)
1
A
IN-
2
3
OUT+
IN+
B _GND
MAX4366
MAX4367
V_CC
MAX4368
C _BIAS
OUT-
UCSP
SHDN
VCC
VCC _{CLICKLESS/POPLESS SHDN}
SHUTDOWNCONTROL
BIAS
OUT-
IN+
AUDIO
INPUT
IN-
OUT+
MAX4367
MAX4368 GND
Pin Configurations continued at end of data sheet.
UCSP is a trademark of Maxim Integrated Products, Inc.
________________________________________________________________ Maxim Integrated Products 1
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.