Datasheet 2-Channel RGB Constant Current LED Driver with Illumination BD2802GU General Description Key Specifications The BD2802GU is a RGB LED driver specifically Operating power supply voltage range: 2.7V to 5.5V engineered for decoration purposes. This RGB driver LED maximum setup current: 30.48mA (Max.) incorporates lighting patterns and illuminates without Oscillator frequency: 1.0 MHz(Typ.) imposing any load on CPU. This RGB driver is Operating temperature range: -40 to +85 best-suited for illumination using RGB LEDs and decoration using monochrome LEDs. In addition, this RGB driver has been successfully miniaturized through the use of a VCSP85H2 (2.8 mm x 2.8 mm 0.5 mm Package W(Typ.) x D(Typ.) x H(Max.) pitch) chip size package. VCSP85H2 2.80mm x 2.80mm x 1.00mm Features RGB LED driver (dual drivers) - A slope control function is incorporated (allowing dual drivers to be controlled independently). - Slope control can be implemented using the DC current. - Two modes continuous illumination mode and illumination single cycle mode are supported. - Independent external ON/OFF synchronizing terminals (of dual drivers) are provided. - Multiple drivers can be used concurrently by 2 Using the I C address change function and supporting reference clock I/O. Thermal shutdown 2 I C BUS fast mode support (maximum rate: 400 kHz) - A device address can be changed via an external pin. Typical Application Circuit Pin Configuration Bottom View RGBGND T4 G2LED G1LED T3 E B2LED R2LED B1LED R1LED VBAT1 D RGBISET RGB1CNT VBAT2 ADDSEL GND2 C index GND1 CLKIO SCL SDA B RGB2CNT VIO RESETB T1 T2 A 1234 V 5 Figure 2. Pin Configuration Figure 1. Application Circuit Product structureSilicon monolithic integrated circuit This product is not designed protection against radioactive rays www.rohm.com TSZ02201-0G3G0CZ00070-1-2 2012 ROHM Co., Ltd. All rights reserved. 1/28 TSZ2211114001 18.AUG.2012 Rev.001Datasheet BD2802GU Absolute Maximum Ratings (Ta=25) Parameter Symbol Limits Unit Maximum Applied voltage VMAX 7 V (Note1) Power Dissipation Pd 1250 mW Operating Temperature Range Topr -40 to +85 Storage Temperature Range Tstg -55 to +150 o o (Note1)Power dissipation deleting is 10.0mW/ C, when its used in over 25 C. (Its deleting is on the board that is ROHMs standard) Recommended Operating Ratings (VBATVIO, Ta=-40 to 85) Parameter Symbol Limits Unit VBAT input voltage VBAT 2.7 to 5.5 V VIO pin voltage VIO 1.65 to 3.3 V Electrical Characteristics (Unless otherwise specified, Ta=25, VBAT=3.6V, VIO=1.8V) Limits Parameter Symbol Unit Condition Min. Typ. Max. Circuit Current VBAT Circuit current 1 IBAT1 - 0.1 3.0 A RESETB=0V, VIO =0V VBAT Circuit current 2 IBAT2 - 0.5 3.0 A RESETB=0V, VIO=1.8V LED 6Ch ON, ILED=10mA setting VBAT Circuit current 3 IBAT3 - 0.8 1.2 mA Exclusive of LED current, RGBISET =120k LED Driver LED current Step ILEDSTP 128 step RGB1 group, RGB2 group LED Maximum setup RGB1 group, RGB2 group IMAX - - 30.48 mA current RGBISET=100k RGB1 group, RGB2 group, LED current accurate ILED 18 20 22 mA Terminal voltage =1V ILED=20mA setting, RGBISET =120k RGB1 group, between RGB2 group, LED current Matching ILEDMT - 5 10 % Terminal voltage =1V ILED=20mA setting LED OFF Leak current ILKL - - 1.0 A OSC OSC oscillation frequency fosc 0.8 1.0 1.2 MHz 2 SDA, SCL(I C interface ) L level input voltage VILI -0.3 - 0.25VIO V H level input voltage VIHI 0.75VIO - VBAT+0.3 V Hysteresis of Schmitt VhysI 0.05VIO - - V trigger input L level output voltage VOLI 0 - 0.3 V SDA pin, IOL=3 mA Input current linI -10 - 10 A Input voltage = 0.1VIO to 0.9VIO RESETB(CMOS input pin) L level input voltage VILR -0.3 - 0.25VIO V H level input voltage VIHR 0.75VIO - VBAT+0.3 V Input current IinR -10 - 10 A Input voltage = 0.1VIO to 0.9VIO www.rohm.com TSZ02201-0G3G0CZ00070-1-2 2012 ROHM Co., Ltd. All rights reserved. 2/28 TSZ2211115001 18.AUG.2012 Rev.001