GENERAL DESCRIPTION
The LM3200 offers superior features and performance for mobile phones and similar RF PA applications. Fixedfrequency PWM mode minimizes RF interference. Bypass mode turns on an internal bypass switch to power the PA directly from the battery. LM3200 has both forced and automatic bypass modes. Shutdown mode turns the device off and reduces battery consumption to 0.1 µA (typ.). The LM3200 is available in a 10-pin lead free micro SMD package. A high switching frequency (2 MHz) allows use of tiny surface-mount components. Only three small external surface-mount components, an inductor and two ceramic capacitors are required. FEATURES
n 2 MHz (typ.) PWM Switching Frequency n Operates from a single Li-Ion cell (2.7V to 5.5V) n Variable Output Voltage (0.8V to 3.6V) n 300 mA Maximum load capability (PWM mode) n 500 mA Maximum load capability (Bypass mode) n PWM, Forced and Automatic Bypass Mode n High Efficiency (96% Typ at 3.6VIN, 3.2VOUT at 120 mA) from internal synchron...
National Semiconductor
