Product parameters

Funtion：Step-Up High Brightness White LED Drive IC

Opration Mode：Switch

Vout Range：0V-18V

Vin Range：2.7V - 6.5V

Operating Current：47uA @3.7V

Solar Panel charge：Yes

Chip Temperature Regulation：No

Package：SOT23-6

Max Output Power：35W

Dimming：Yes

Chip Enable：Yes

On-chip Power MOSFET：No

General Description

The CN5832 is a boost high brightness white LED driver IC designed for applications where extremely low cost and small size are top priorities. The CN5832 adopts PFM operating mode, which provides excellent efficiency over a wide-range of input voltage and LED currents. The on-time and off-time are tuned to permit optimization of external component size. Low current consumption of 47uA(typical) makes CN5832 ideal for battery-powered applications.

The LED current is set by an external sense resistor, and the feedback voltage is regulated to 130mV. The PWM signal can be applied to DIM pin to adjust the LED brightness. The CN5832 does not burst the LED current, therefore no audible noise generated during LED dimming.

The CN5832 features open LED protection that prevent the LED voltage from exceeding the absolute maximum voltage ratings of the device during open LED conditions.

DIM pin can also functions as shutdown pin.

The CN5832 is available in a space-saving 6-pin SOT23 package.

 

Applications

l  Tablet Backlighting

l  Handheld Medical Equipment

l  Potable TVs

l  Handheld Data Terminals

Features

l  Operating voltage range：2.7V to 6.5V

l  Low Operating Current: 47uA @3.7V

l  Suitable for Applications Powered by Battery

l  Regulated Feedback Voltage: 130mV±10%

l  Output Voltage up to 17V Typical

l  Open LED Protection

l  PWM LED Brightness Control Without Audible Noise

l  DIM Input also Functions as Shutdown Pin

l  Shutdown current: 1uA Max.

l  Output Power: up to 35W

l  High Efficiency: up to 94%

l  Operating Temperature Range

      -40°C to +85°C

l  Available in SOT23-6

l  Pb-free, rohs-Compliant and Halogen-free