Global Mixed-mode Technology Inc.
G1445
2.6W Mono Audio Amplifier with Shutdown Mode
Features
Depop Circuitry Integrated
2.7V to 5.5V Operation
Output Power at 10% THD+N, VDD=5V
--2.6W (typical) into a 3Ω Load
Output Power at 1% THD+N, VDD=5V
--2W (typical) into a 4Ω Load
--1.3W (typical) into a 8Ω Load
Mono Bridge-Tied Load (BTL)
Shutdown Control Available
MSOP-8 (FD) , TDFN3X3-8 Package &
WLCSP2X4-8 Available
General Description
The G1445 is a mono audio power amplifier in
MSOP-8 (FD), TDFN3X3-8 and WLCSP2X4-8 pack-
age. It can drive 2W continuous RMS power into 4Ω
load in Bridge- Tied Load (BTL) mode at 5V supply
voltage. Its THD is smaller than 1% under the above
operation condition. For the low current consumption
applications, the SHDN mode is supported to disable
the G1445 when it is idle. The current consumption
can be further reduced to below 1µA.
Giving the
SHUTDOWN
pin low level will drive the
G1445 entering the shutdown.
Applications
PDAs
Portable Devices
Notebook
Ordering Information
ORDER
NUMBER
G1445F51U
G1445B31U
G1445RD1D
MARKING
G1445
1445
1445
TEMP.
RANGE
PACKAGE
(Green)
-40°C
to +85°C MSOP-8 (FD)
-40°C
to +85°C WLCSP2X4-8
-40°C
to +85°C TDFN3X3-8
Note:F5:MSOP-8 (FD) B3: WLCSP2X4-8 RD:TDFN3X3-8
1: Bonding Code
U & D: Tape & Reel
Pin Configuration
G1445
SHUTDOWN
BYPASS
IN+
IN-
1
2
3
4
Top View
MSOP-8 (FD)
Thermal
Pad
8
7
6
5
VO2
GND
VDD
VO1
SHUTDOWN
BYPASS
IN+
IN-
1
2
3
4
G1445
8
Thermal
Pad
7
6
5
TDFN3X3-8
VO2
GND
VDD
VO1
8 Bump WLCSP
IN-
A
VDD
B
IN+
C
BYPASS
D
1
2
VO1
GND
VO2
SHUTDOWN
Top View
WLCSP2X4-8
Note: Recommend connecting the Thermal Pad to the Ground for excellent power dissipation.
Ver: 1.6
Jun 29, 2010
TEL: 886-3-5788833
http://www.gmt.com.tw
1
GMT [ GLOBAL MIXED-MODE TECHNOLOGY INC ]
