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LM3676,pdf datasheet (600mA St
消耗积分:3 |
格式:rar |
大小:551 |
2009-09-29
贾伟刚
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The LM3676 step-down DC-DC converter is optimized for
powering low voltage circuits from a single Li-Ion cell battery
and input voltage rails from 2.9V to 5.5V. It provides up to
600mA load current, over the entire input voltage range.
There are several different fixed voltage output options available
as well as an adjustable output voltage version.
The LM3676 has a mode-control pin that allows the user to
select continuous Forced PWM mode over the complete load
range or an intelligent PFM-PWM mode that changes modes
depending on the load. PWM mode offers superior efficiency
under high load conditions (>100mA) and the lowest output
noise performance. In Auto mode, PFM-PWM, hysteretic
PFM extends the battery life through reduction of the quiescent
current to 16μA (typ.) during light loads and system
standby.
powering low voltage circuits from a single Li-Ion cell battery
and input voltage rails from 2.9V to 5.5V. It provides up to
600mA load current, over the entire input voltage range.
There are several different fixed voltage output options available
as well as an adjustable output voltage version.
The LM3676 has a mode-control pin that allows the user to
select continuous Forced PWM mode over the complete load
range or an intelligent PFM-PWM mode that changes modes
depending on the load. PWM mode offers superior efficiency
under high load conditions (>100mA) and the lowest output
noise performance. In Auto mode, PFM-PWM, hysteretic
PFM extends the battery life through reduction of the quiescent
current to 16μA (typ.) during light loads and system
standby.
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