ROHM BD6184GUL Data Sheet

System LED Drivers for Mobile Phones

8 LEDs LDO 4ch

BD6184GUL No.10041EAT10

●Description BD6184GUL is “Intelligent LED Driver” that is the most suitable for the cellular phone. It has 3 ~ 8LED driver and output variable LDO4ch for LCD Backlight. It can be developed widely from the High End model to the Low End model. As it has charge pump circuit for LED power supply, it is no need to use coils, and it contributes to small space. VCSP50L3 (3.15mm x 3.10mm 0.5mm pitch) It adopts the very thin CSP package that is the most suitable for the slim phone.

●Features 1) Total 3 ~ 8LEDs driver for LCD Backlight ・It has 4LEDs (it can select 4LED or 3LED) for exclusire use of Main and 4LEDs which can chose independent control

or a main allotment by resister setting. ・“Main Group” can be controlled by external PWM signal. ・ON/ Off and a setup of LED current are possible at the time of the independent control by the independence. 2) Charge Pump DC/DC for LED driver ・It has x1/x1.5/ x2 mode that will be selected automatically. ・The most suitable voltage up magnification is controlled automatically by LED port voltage. ・Soft start functions,Over voltage protection (Auto-return type),Over current protection (Auto-return type) loading 3) 4ch Low Drop Out Series Regulator (LDO) ・It has 16 steps selectable output voltage by the register. LDO1, LDO2, LDO3, LDO4: Iomax=150m A 4) Thermal shutdown 5) I2C BUS FS mode (max 400 k Hz) Compatibility

●Absolute Maximum Ratings (Ta=25℃)

Parameter Symbol Ratings Unit

Maximum Voltage VMAX 7 V Power Dissipation Pd 1430 note) m W Operating Temperature Range Topr -30 ~ +85 ℃ Storage Temperature Range Tstg -55 ~ +150 ℃ note) Power dissipation deleting is 11.44m W/ ℃, when it’s used in over 25 ℃. (It’s deleting is on the board that is ROHM’s standard)

●Operating Conditions (VBAT≥VIO, Ta=-30 ~ 85 ℃)

Parameter Symbol Limits Unit

VBAT Input Voltage VBAT 2.7 ~ 5.5 V VIO Pin Voltage VIO 1.65 ~ 3.3 V

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