• 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

• MR16 and Other LED Bulbs

• Power Led driver

• Constant Current Source

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

The KB1365 operate from a 5.5V to 40V input voltage

range and feature a 5V/10mA on-board regulator. A high-

side current-sense resistor adjusts the output current and a

dedicated PWM input (DIM) enables a wide range of pulsed

The KB1365 is well suited for applications requiring a

wide

input

voltage

range.

The

high-side

current-

sensing and an integrated current-setting circuitry minim-

ize the number of external components while deliv-

switching frequency, thus allowing for small component size.

1

KB1365

Kingbor Technology Co.,Ltd

TEL:(86)0755-26508846 FAX:(86)0755-26509052

APPLICATIONS

FEATURES

DESCRIPTION

SIMPLIFIED BLOCk DIAGRAM

REV: 1.0

DRV

GND

VCC

IN

Power LED Driver

CS

KB1365

6

3

5

4

• 5.5V to 40V Input Voltage Range

• 200mV Low Reference Voltage(5%)

LED illumination applications.

dimming.

ering an LED current with +/-5% accuracy. A hys-

teretic 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 2MHz

CSN

1

DIM

2

COMPARATOR

REGULATOR

5V

GATE

DRIVER

UVLO

COMPARATOR

DIM

BUFFER

1.23V

IN-200mV

20mV

PWM Signal

1 F

*

*

*

2MHz High-Brightness LED Drivers with

High-Side Current Sense and 5000:1 Dimming

On Page 4

See Note2