G1445 Global Mixed-mode Technology Inc. 2.6W Mono Audio Amplifier with Shutdown Mode Features General Description The G1445 is a mono audio power amplifier in MSOP-8 (FD), TDFN3X3-8 and WLCSP2X4-8 package. 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. 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 Giving the SHUTDOWN pin low level will drive the G1445 entering the shutdown. Applications Ordering Information PDAs Portable Devices Notebook ORDER NUMBER MARKING G1445F51U G1445B31U G1445RD1D 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 1 BYPASS 2 IN+ 3 IN- 4 Thermal Pad Top View MSOP-8 (FD) 8 Bump WLCSP G1445 8 VO2 SHUTDOWN 1 7 GND BYPASS 2 6 VDD IN+ 3 5 VO1 IN- 4 Thermal Pad TDFN3X3-8 IN- A VO1 GND VDD B GND 6 VDD IN+ C VO2 5 VO1 BYPASS D 8 VO2 7 SHUTDOWN 2 1 Top View WLCSP2X4-8 Note: Recommend connecting the Thermal Pad to the Ground for excellent power dissipation. TEL: 886-3-5788833 http://www.gmt.com.tw Ver: 1.6 Jun 29, 2010 1