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LM3203,pdf datasheet (Step-Dow
消耗积分:3 |
格式:rar |
大小:551 |
2009-10-07
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The LM3203 is a DC-DC converter optimized for powering
RF power amplifiers (PAs) from a single Lithium-Ion cell.
However, they may be used in many other applications. It
steps down an input voltage of 2.7V to 5.5V to an adjustable
output voltage of 0.8V to 3.6V. The output voltage is set
using a VCON analog input and external resistor dividers for
optimizing efficiency of the RF PA at various power levels.
The LM3203 offers 3 modes for mobile phones and similar
RF PA applications. Fixed-frequency PWM mode minimizes
RF interference. Bypass mode turns on an internal bypass
switch to power the PA directly from the battery. Shutdown
mode turns the device off and reduces battery consumption
to 0.1μA (typ.).
RF power amplifiers (PAs) from a single Lithium-Ion cell.
However, they may be used in many other applications. It
steps down an input voltage of 2.7V to 5.5V to an adjustable
output voltage of 0.8V to 3.6V. The output voltage is set
using a VCON analog input and external resistor dividers for
optimizing efficiency of the RF PA at various power levels.
The LM3203 offers 3 modes for mobile phones and similar
RF PA applications. Fixed-frequency PWM mode minimizes
RF interference. Bypass mode turns on an internal bypass
switch to power the PA directly from the battery. Shutdown
mode turns the device off and reduces battery consumption
to 0.1μA (typ.).
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