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LM3151,pdf datasheet (Synchron
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大小:551 |
2009-09-28
48674
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The LM3151/2/3 SIMPLE SWITCHER® Controller is an easy
to use and simplified step down power controller capable of
providing up to 12A of output current in a typical application.
Operating with an input voltage range from 6V-42V, the
LM3151/2/3 features a fixed output voltage of 3.3V, and features
switching frequencies of 250 kHz, 500 kHz, and 750
kHz. The synchronous architecture provides for highly efficient
designs. The LM3151/2/3 controller employs a Constant
On-Time (COT) architecture with a proprietary Emulated Ripple
Mode (ERM) control that allows for the use of low ESR
output capacitors, which reduces overall solution size and
output voltage ripple. The Constant On-Time (COT) regulation
architecture allows for fast transient response and requires
no loop compensation, which reduces external component
count and reduces design complexity.
to use and simplified step down power controller capable of
providing up to 12A of output current in a typical application.
Operating with an input voltage range from 6V-42V, the
LM3151/2/3 features a fixed output voltage of 3.3V, and features
switching frequencies of 250 kHz, 500 kHz, and 750
kHz. The synchronous architecture provides for highly efficient
designs. The LM3151/2/3 controller employs a Constant
On-Time (COT) architecture with a proprietary Emulated Ripple
Mode (ERM) control that allows for the use of low ESR
output capacitors, which reduces overall solution size and
output voltage ripple. The Constant On-Time (COT) regulation
architecture allows for fast transient response and requires
no loop compensation, which reduces external component
count and reduces design complexity.
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