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Product Introduction

Product parameters

Funtion:4.5V to 32V Input, Constant Current Boost HB LED Driver

Opration Mode:Switch

Vin Range:4.5V-32V

Operating Current:850uA

Solar Panel charge:No

Chip Temperature Regulation:No

Package:SSOP10

Switching Frequency:330kHz

Dimming:Yes

Chip Enable:Yes

On-chip Power MOSFET:No


General Description:

The CN5815 is a current mode fixed-frequency PWM controller for high brightness(HB) LED driving applications. The device operates from an input supply between 4.5V and 32V and provides to drive an external N-channel MOSFET.

The CN5815 contains all the necessary building blocks including a bandgap reference, a 330KHz oscillator, current-mode control circuitry, chip shutdown block, softstart block and gate driver, etc. LED current is set by an external resistor.

Current mode control provides improved transient response and simplified loop compensation. On-chip soft start reduces the inrush current on power up. The other features include chip shutdown, over voltage protection, LED dimming, built-in 5V regulator and slope compensation, etc.

The CN5815 is available in 10-pin SSOP package.

 

 

Applications:

l  High Brightness LED Lighting

l  Flashlight

l  Building and Street Lighting

l  Constant Current Power Supply

l  Portable Devices

Features:

l  Constant Current HB LED Driver

l  LED Current Set by an External Resistor

l  ±10% LED Current Accuracy

l  Peak Current Mode PWM Controller

l  4.5V to 32V Input Range

l  330kHz Switching Frequency

l  PWM Dimming

l  Cycle-by-Cycle Peak Inductor Current Limit

l  On-Chip Slope Compensation

l  Internal Soft-start

l  Built-in 5V regulator

l  Low Shutdown Current

l  Operating Temperature Range:
     40 to 85

l  Available in 10-pin SSOP package.

l  Lead-free, Rohs-Compliant and Halogen-free


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