LED Control IC W2RF004RM Most Suitable IC for Controlling LED Effects within Applications Free-running PWM gradation control, with up to 1,024 levels, en- ables the representation of beautiful fade-in and fade-out effects. CPU load can be reduced by controlling lighting gradation and speed. Up to 49 pieces of this IC can be connected on the same serial bus communication line. Device group setting is also possible. Independant control of up to 9 Lines. Use with Omrons W2RV005RM Constant Current IC to directly drive multiple LEDs in series. RoHS Compliant Ordering Information Description Model LED Control IC W2RF004RM Specifications Absolute Maximum Ratings (Ta = 25C) Recommended Operating Conditions Item Symbol Rating Item Symbol Rating Supply Voltage V -0.3 to 7.0 V Supply Voltage V 3.0 to 5.5 V DD DD Input Voltage V -0.3 to V + 0.3 7.0 V Input Voltage V 0 to V V IN DD IN DD Communication Output Communication Output V -0.3 to V + 0.3 7.0 V I -10 to 10 mA SOUT DD SOUT Voltage (SCL-O, SDA-O) Current (SCL-O, SDA-O) Driving Output Voltage V -0.3 to 20 V Communication Clock Max. 5 MHz DOUT f SCL Frequency (SCL-I) (See note 1) 50 mA (when V = 5.0 V) Driving Output Current/pin DD I DOUT (See note 1) 30 mA (when V = 3.3 V) DD Note: 1. Take the timing characteristics into consideration. Power Dissipation Pd 1.06 W (See note 2) Operating Temperature T -20 to 85 C OPR Storage Temperature T -40 to 150 C STG Note: 1. Take the power consumption and power dissipation rating into consideration. 2. When implemented on a standard board (70 x 70 x 1.6 mm, Cu 3%, Single-sided glass epoxy board). The value reduces at a rate of about 8.48 mW/C when the IC is used at Ta = 25C or higher. DC Electrical Characteristics (Ta = 25C, V = 5V) DD Spec. Applicable Item Symbol Condition Unit terminal Min. Typ. Max. High-level Input Voltage V - - - V x 0.7 - - - - - - V IH DD SDA-I, SCL-I, RST, INV, ADRA0 to 2, ADRB0 to 2 Low-level Input Voltage V - - - - - - - - - V x 0.3 V IL DD High-level Communication V I = -10 mA V - 0.5 - - - - - - V SOH OUT DD Output Voltage SDA-O, SCL-O Low-level Communication V I = 10 mA - - - - - - 0.5 V SOL OUT Output Voltage Driving Output Voltage 1 V I = 50 mA - - - 0.27 0.60 V DO1 OUT OUTA0 to 2 Driving Output Voltage 2 V I = 20 mA - - - 0.10 0.22 V OUTB0 to 2 DO2 OUT OUTC0 to 2 Driving Output Leakage Current I V = 5 V - - - - - - 1.0 A DOZ OUT Operating Current Consumption I Total Output: I = 50 mA - - - 2.4 4.1 mA V DD OUT DD LED Control IC W2RF004RM 1Timing Characteristics (Ta = 25C, V = 5V) DD Spec. Applicable Item Symbol Condition Unit terminal Min. Typ. Max. OUTA0 to 2 Driving Output PWM Cycle T - - - 3.88 4.00 4.12 ms OUTB0 to 2 PWM OUTC0 to 2 Communication Clock t - - - 100 - - - - - - ns SCL-I SCL Pulse Width Setup Time t - - - 50 - - - - - - ns SET SDA-I, SCL-I Hold Time t - - - 50 - - - - - - ns HLD t t SCL SCL SCL-I t t SET HLD Valid SDA-I Fig. 1 Input timing waveforms Engineering Data Block Diagram INV SDA-I Filter Communi- Gradation cation OUTA0 control SCL-I Filter circuit A0 Register Output Gradation circuit OUTB0 control SDA-O Buffer B0 SCL-O Buffer Gradation OUTC0 control C0 ADRA2 Operational Gradation control control OUTA1 ADRA1 A1 ADRA0 Gradation OUTB1 ADRB2 control B1 ADRB1 Gradation ADRB0 OUTC1 control C1 Gradation RST Filter Reset control OUTA2 A2 CAP Gradation control OUTB2 B2 Clock VDD Internal division oscillation circuit Gradation OUTC2 control C2 GND System clock 2 LED Control IC W2RF004RM