RT8450B
Description
The RT8450/B 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 50V)ranges the RT8450/B can operate in any of the three mon topologies : Buck, Boost or Buck-Boost.
With 800k/500k Hz operating frequency, the external PWM inductor and input/output capacitors can all be small. High efficiency is achieved by a 190m V current sensing.
Dimming can be done either analog or PWM signal. An unique built-in clampping parator and filtering resistor allow easy low noise analog dimming conversion from PWM signal with only one external capacitor.
The RT8450/B is available in a TSSOP-16 (Exposed Pad) and WDFN-12L 3x3 packages.
Ordering Information
RT8450/B Package Type CP : TSSOP-16 (Exposed Pad) QW : WDFN-12L 3x3 (W-Type) (Exposed Pad-Option 1)
Lead Plating System G : Green (Halogen Free and Pb Free)
Switching Frequency 500k Hz 800k Hz
Note : Richtek products are :
Ro HS pliant and patible with the...
