BL6203* Watt Fully Differential Audio Power Amplifier
Fully differential amplifier
Improved PSRR at 217Hz (VDD>3.0V) 90dB (typ)
Power output at 5.0V & 1% THD 1.25W (typ)
Power output at 3.6V & 1% THD 0.6W (typ)
Ultra low shutdown current 0.01μA (typ)
Improved pop & click circuitry eliminates noises during turn-on and turn-off transitions
Thermal overload protection circuitry
No output coupling capacitors, bootstrap capacitors required
External gain configuration capability
Available in space-saving package: 8-bump WLCSP
General Description BL6203*
The BL6203 is a fully differential audio power amplifier designed for portable communication device applications. It is capable of delivering 1.25 watt of continuous average power to an 8Ω BTL load with less than 1% distortion (THD+N) from a 5V battery voltage. It operates from 2.2 to 5.5V.
Features like 90dB PSRR at 217Hz, improved RF-rectification immunity, the space-saving 8-bump WLCSP package, the advanced pop & click circuitry, a minimal count of external components and low-power shutdown mode make BL6203 ideal for wireless handsets.
The BL6203 is unity-gain stable, and the gain can be configured by external resistors.
Portable electronic devices
PDAs, Handheld computers