G1454/G1454L Global Mixed-mode Technology Inc. 2.0W Stereo Audio Amplifier with Shutdown Mode Features General Description The G1454/G1454L is a stereo audio power amplifier in 16 pin TQFN3X3-16 with thermal pad package. It can drive 1.45W 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 SHUTDOWN mode is supported to disable the G1454/G1454L when it is idle. The current consumption can be further reduced to below 1µA. Depop Circuitry Integrated 3V to 5.5V Operation Output Power at 10% THD+N, VCC=5V --2.1W (typical) into a 3Ω Load Output Power at 1% THD+N, VCC=5V --1.45W (typical) into a 4Ω Load --1.15W (typical) into a 8Ω Load Output Power at 10% THD+N, VCC=5V --2W (typical) into a 4Ω Load --1.47W (typical) into a 8Ω Load Stereo Bridge-Tied Load (BTL) Shutdown Control Available TQFN3X3-16 Package Available Giving the SHUTDOWN pin low level will drive the G1454L entering the shutdown. Giving the SHUTDOWN pin high level will drive the G1454 entering the shutdown Applications Ordering Information PDAs Portable Devices Notebook ORDER NUMBER MARKING TEMP. RANGE PACKAGE (Green) G1454R41U G1454LR41U 1454 1454L -40°C to +85°C -40°C to +85°C TQFN3X3-16 TQFN3X3-16 Note: R4: TQFN3X3-16 1: Bonding Code U: Tape & Reel 10 VSS VSS 3 LVO2 4 RVO2 LIN- SHUTDOWN NC 14 13 NC 13 15 SHUTDOWN 14 LIN+ LIN15 16 LIN+ G1454 TQFN3X3-16 Thermal Pad 12 RVO1 11 VCC 10 VSS 9 8 2 RIN+ VCC 7 VCC RIN- 11 6 1 NC LVO1 5 RVO1 BYPASS 12 9 8 4 RIN+ LVO2 7 3 RIN- VSS Thermal Pad 6 2 NC VCC 5 1 BYPASS LVO1 16 Pin Configuration RVO2 G1454L TQFN3X3-16 TEL: 886-3-5788833 http://www.gmt.com.tw Ver: 1.1 Apr 29, 2009 1