KB1365

Features:

• 5.5V to 40V Input Voltage Range
• High-Side Current Sense
• 20kHz Maximum Dimming Frequency
• Hysteretic Control: No Compensation
• Dedicated Dimming Control Input
• Up to 2MHz Switching Frequency
• Adjustable Constant LED Current
• Up to 5A Constant Current Output
• 5V, 10mA On-Board Regulator
• -40 to +125 Operating Temperature Range
• SOT23-6 package


Application

• MR16 and Other LED Bulbs
• Power Led driver
• Constant Current Source


Specifications

IN, CSN, DIM to GND .............................................-0.3V to +40V VCC, DRV to GND ....................................................-0.3V to +6V CSN to IN..............................................................-0.3V to +0.3V Maximum Current into Any Pin (except IN, VCC, and DRV)............................................±20mA Continuous Power Dissipation (TA = +70) 6-Pin SOT ...................................................................350mW Operating Temperature Range ......................-40 to +125 Junction Temperature...................................................+150 Storage Temperature Range ..........................-65 to +150Lead Temperature (soldering, 10s) .............................+300 Pin-to-Pin ESD Ratings (HB Model).....................................2.5kV *As per JEDEC51 Standard (Single-Layer Board).


Description

The KB1365, step-down constant-current high-brightness LED (HB LED) drivers provide a cost-effective solution for automotive interior/exterior lighting,architectural and ambient lighting, LED bulbs such as MR16 and other LED illumination applications.

The KB1365 operate from a 5.5V to 40V input voltage range and feature a 5V/10mA on-board regulator. A highside current-sense resistor adjusts the output current and a dedicated PWM input (DIM) enables a wide range of pulseddimming.

The KB1365 is well suited for applications requiring a wide input voltage range. The high-side currentsensing and an integrated current-setting circuitry minimize the number of external components while delivswitching ering an LED current with +/-5% accuracy. A hysteretic control algorithm ensures excellent input-supply rejection and fast response during load transients and PWM dimming. The KB1365 features a 20% inductor current ripple. These devices operate up to 2MHzdelivswitching frequency, thus allowing for small component size.