MBI6660

Macroblock Preliminary Datasheet MBI6660 60V, Step-Down, 500mA LED Driver Features  Maximum 500mA constant output current  97% efficiency @ input voltage 48V, loading condition 350mA, 12 LEDs in series  9~60V wide input voltage range Surface Mount Device  Hysteretic PFM eliminates external compensation design  Settable output current  Integrated power switch with 0.35ohm Rds(on)  Full protections: UVLO/Start-Up/OCP/ Thermal/ LED Open-/ LED GSD: TO-252-5L Short- Circuited  Only 5 external components required Small Outline Package Product Description MBI6660 is a high efficiency, constant current and step-down DC/DC converter. It is designed to deliver constant current to light up high power LED with only 5 external components. By hysteretic PFM control scheme, MBI6660 omits the external compensation design. GD: SOP8L-150-1.27 The output current of MBI6660 can be programmed by an external resistor and LED dimming can be controlled via pulse width modulation (PWM) through DIM pin. In addition, the start-up function limits the inrush current while the power is on. MBI6660 also features under voltage lock out (UVLO), over temperature protection (OTP), and over current protection (OCP) to guard the system to be robust and keep the IC away from being damaged resulting from LED open-circuited, short-circuited and other abnormal events. Additionally, to ensure the system reliability, MBI6660 builds thermal protection (TP) function inside. This function p...