Prema PR4101大功率LED驱动方案
High Power LED Buck Driver PR4101
The PR4101 is a LED buck driver for driving one or several high power LEDs in series.
The supply voltage can be up to 40V, with an output current of more than 1A using an
external N-channel MOSFET switching transistor. The PR4101A with additional PWM and
power down input is delivered SOP14 packaged, while the PR4101B is offered SO8
packaged.
PR4101主要特性:
Adjustable output current of 1A and more
Supply voltage up to 40V bulb replacement by LEDs
Dimming with phase-cut dimmer
Brightness control with PWM (PR4101A only)
Output current temperature compensation
Delayed start possible (PR4101A only)
Over temperature protection
Frequency spreading for improved EMI
Low standby current of < 35 μA
Under voltage lockout
应用:
Halogen lamp or filament
General illumination
Warning lights
Automotive lighting
Indicator signs
LCD backlighting
图1.PR4101典型应用电路
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