Features
Maximum 2A constant output current
>95% efficiency @ input voltage 36V, load condition: 2A, 10 LEDs
4.5V~60V wide input voltage range
Common anode connection
Adaptive hysteretic PFM with adjustable fixed frequency operation
Tunable output current
Integrated power switch with 0.2Ω on-resistance
Full protections: UVLO/OCP/ Thermal/ LED Open-/ LED Short- Circuited
Product Description
MBI6662 is a high efficiency, constant current and step-down DC/DC converter. It
is designed to deliver constant current to light up high power LEDs. With the
adaptive hysteretic PFM control scheme, MBI6662 can achieve constant
frequency operation under common anode connection.
The output current of MBI6662 can be set by an external resistor, and LED brightness can be controlled via a pulse
width modulation (PWM) signal through DIM pin. In addition, the soft-start function limits the inrush current while the
power is turned on. MBI6662 also features under voltage lock out (UVLO), over temperature protection (OTP), and
over current protection (OCP) to ensure system robustness and prevent IC and LEDs from being damaged once
any abnormal condition occurs.
To ensure system reliability, MBI6662 is equipped with thermal shutdown protection (TSD), which protects IC from
overheating by turning off the internal MOSFET. MBI6662 is available in thermal-enhanced DFN-10 and SOP-10
package to handle power dissipation more efficiently
