CL325SG-G Microchip

CL320/CL325/CL330 3-Channel Linear LED Drivers Features General Description 6% Current Accuracy when V is between 4V The CL320/CL325/CL330 are designed to drive three OUT and 15V strings of LEDs at a constant current of 20 mA, 25 mA and 30 mA, respectively. 90V Standoff Voltage Separate Enable Pins for each Channel for PWM The drive current is fixed, with a 6% tolerance over a Dimming V range of 4V to 15V. Separate enable pins for OUT each channel allow for PWM dimming, three-step linear Overtemperature Protection dimming or individual disconnection of faulty LED 8-Lead SOIC (with Heat Slug) Package strings. Overtemperature protection circuitry shuts down all Applications three channels when the nominal die temperature LCD Backlighting reaches 135C. Normal operation resumes when the Indicator Lamps die temperature drops by 30C. The CL320/CL325/CL330 are available in the 8-lead SOIC (with heat slug) package and require a single ceramic bypass capacitor which may be shared among several drivers. Package Type 8-lead SOIC with heat slug (Top view) OUT3 OUT2 OUT1 VIN GND Underside plate EN3 is ground EN2 EN1 See Table 2-1 for pin information. 2017 Microchip Technology Inc. DS20005599A-page 1CL320/CL325/CL330 Functional Block Diagram and Typical Application Circuit 6.5 - 90V C IN 100 nF 87 6 5 VIN OUT1 OUT2 OUT3 REG V DD 1 EN1 Host 2 EN2 Controller 3 EN3 GND 4 CL320/CL325/CL330 DS20005599A-page 2 2017 Microchip Technology Inc.