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RT8450 pdf datasheet (High Vol
消耗积分:5 |
格式:rar |
大小:322 |
2009-02-10
杜喜喜
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The RT8450 is a current mode PWM regulator for LED
driving applications. With an 1.5A switch on board and wide
input (4.5V to 40V) and/or output (up to 60V)ranges the
RT8450 can operate in any of the three common topologies
: Buck, Boost or Buck-Boost.
With a 1MHz operating frequency, the external PWM
inductor and input/output capacitors can all be small. High
efficiency is achieved with a 190mV current sensing.
Dimming can be either analog or PWM digital, an unique
built-in clampping comparator and filtering resistor allow
easy low noise analog dimming conversion from PWM
signal with only one external capacitor.
The RT8450 is available in a TSSOP-16 (Exposed Pad)
and WDFN-12L 3x3 power packages.
driving applications. With an 1.5A switch on board and wide
input (4.5V to 40V) and/or output (up to 60V)ranges the
RT8450 can operate in any of the three common topologies
: Buck, Boost or Buck-Boost.
With a 1MHz operating frequency, the external PWM
inductor and input/output capacitors can all be small. High
efficiency is achieved with a 190mV current sensing.
Dimming can be either analog or PWM digital, an unique
built-in clampping comparator and filtering resistor allow
easy low noise analog dimming conversion from PWM
signal with only one external capacitor.
The RT8450 is available in a TSSOP-16 (Exposed Pad)
and WDFN-12L 3x3 power packages.
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