GENERAL DESCRIPTION
Using a VCON analog input, the output voltage is set for controlling power levels and efficiency of the RF PA. The RF interferences are minimized due to the fixedfrequency PWM operation. The battery consumption is reduced to 0.01µA (typ.) during shutdown. Because of the high switching frequencies (2 MHz) tiny surface-mount components can be used. Additional to the small size the amount is also small. Only three external components are required, an inductor and two ceramic capacitors. The AS1332 is available in a 8-pin WL-CSP. D a ta s h e e t 6 5 0 m A , St e p - D o w n D C - D C C o n v e r t e r f o r R F P o w e r A m p l i f i e r s 2 Key FEATURES
! ! ! PWM Switching Frequency: 2MHz Single Lithium-Ion Cell Operation (2.7V to 5.5V) Dynamic Programmable Output Voltage (1.3V to 3.16V) Maximum load capability of 650mA High Efficiency (96% Typ at 3.6VIN, 3.16VOUT at 400mA) from internal synchronous rectification Current Overload Protection Thermal Overload Protection Soft Start 8-pin WL-CSP ! ! ! ! ! !
austriamicrosystems AG
