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Global Mixed-mode Technology
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
MARKING
TEMP.
RANGE
G1445F51U G1445 -40°C to +85°C
G1445B31U 1445 -40°C to +85°C
G1445RD1D 1445 -40°C to +85°C
PACKAGE
(Green)
MSOP-8 (FD)
WLCSP2X4-8
TDFN3X3-8
Note:F5:MSOP-8 (FD) B3: WLCSP2X4-8 RD:TDFN3X3-8
1: Bonding Code
U & D: Tape & Reel
Pin Configuration
SHUTDOWN 1
BYPASS 2
IN+ 3
IN- 4
G1445
Thermal
Pad
8 VO2 SHUTDOWN 1
7 GND
BYPASS 2
6 VDD
IN+ 3
5 VO1
IN- 4
G1445
Thermal
Pad
8 VO2
7 GND
6 VDD
5 VO1
Top View
MSOP-8 (FD)
TDFN3X3-8
8 Bump WLCSP
IN- A
VO1
VDD B
GND
IN+ C
VO2
BYPASS D
12
Top View
WLCSP2X4-8
SHUTDOWN
Note: Recommend connecting the Thermal Pad to the Ground for excellent power dissipation.
Ver: 1.8
Aug 26, 2013
TEL: 886-3-5788833
http://www.gmt.com.tw
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