BL6290 Datasheet | BELLING

Features Improved PSRR at 217 Hz & 1 KHz 64 d B Power output at 5.0V, 1% THD+N, 8Ω 1.25 W (typ.) Power output at 3.0V, 1% THD+N, 8Ω 450 m W (typ.) Ultra low shutdown current 0.1 u A (typ.) 2.2V - 5.5V operation Improved circuitry eliminates pop-click noise during turn-on and turn-off transitions No output coupling capacitors, snubber networks or bootstrap capacitors required Unity-gain stable External gain configuration capability Available in space-saving packages: MSOP8,SOP8 General Description The BL6290 is a Class-AB audio power amplifier designed for mobile phones and other portable munication devices. It is capable of delivering 1.25 watts of continuous average power to an 8Ω BTL load with less than 1% distortion (THD+N) from a 5VDC power supply. The BL6290 was designed specifically to provide high quality output power with a minimal amount of external ponents. It does not require output coupling capacitors or bootstrap capacitors. And with ultra low shutdown current, the BL6290 is ideally suited for mobile phone and other low voltage applications where minimal power consumption is a primary requirement. With special pop-click eliminating circuit, the BL6290 provides perfect pop-click characteristic during turn-on and turn-off transitions. The BL6290 is unity-gain stable and can be configured by external gain-setting resistors. Applications Wireless handsets Portable electronic devices PDAs, Handheld puters http://.belling..cn -1- Total 11 Pages Pin Diagrams Pin Description No. Pin Name 1 2 BP 3 INP 4 INN 5 Vout1 6 VDD 7 GND 8 Vout2 I/O Description I Shout-down Logical Control, ‘0’ is active. I/O Analog ground for inner OPAs. It’s about a half of VDD. I Positive Input I Negative Input O Negative BTL Output I/O Power Supply (2.2 - 5.5 V) I/O Ground O Positive BTL Output http://.belling..cn -2- Total 11 Pages Typical Application Circuit Audio In Ri = 20 kΩ Ci = 0.39 µF INN INP Rf = 20 kΩ 20...