TB62777FNG,C8,EL Toshiba

TB62777FNG/FG TOSHIBA Bi-CMOS Integrated Circuit Silicon Monolithic TB62777FNG, TB62777FG 8-Channel Constant-Current LED Driver of the 3.3-V and 5-V Power Supply Voltage Operation The TB62777FNG/FG is comprised of constant-current drivers designed for LEDs and LED panel displays. The regulated current sources are designed to provide a TB62777FNG constant current, which is adjustable through one external resistor. The TB62777FNG/FG incorporates eight channels of shift registers, latches, AND gates and constant-current outputs. Fabricated using the Bi-CMOS process, the TB62777FNG/FG is capable of high-speed data transfers. The TB62777FNG/FG is RoHS. TB62777FG Features Power supply voltages: V = 3.3 V/5 V DD Output drive capability and output count: 50 mA 8 channels Constant-current output range: 5 to 40 mA Voltage applied to constant-current output terminals: 0.4 V (min, I = 5 to 40 mA) OUT Designed for common-anode LEDs Thermal shutdown (TSD) min: 150 Power on reset (POR) Logical input signal voltage level: 3.3-V and 5-V CMOS Weight: SSOP16-P-225-0.65B 0.07 g (typ.) interfaces (Schmitt trigger input) SSOP16-P-225-1.00A 0.14 g (typ.) Maximum output voltage: 25V Serial data transfer rate: 25 MHz (max) cascade connection Operating temperature range: T = 40 to 85C opr Package: SSOP16-P-225-0.65B/ SSOP16-P-225-1.00A Constant-current accuracy Current accuracy Current Accuracy Output Voltage Output Current Between Channels Between ICs 0.4 V to 4 V 3% 6% 15 mA 1 2010-03-08 TB62777FNG/FG Pin Assignment (top view) GND VDD SERIAL-IN R-EXT CLOCK SERIAL-OUT LATCH ENABLE OUT0 OUT7 OUT1 OUT6 OUT2 OUT5 OUT3 OUT4 Block Diagram OUT0 OUT1 OUT7 R-EXT I-REG TSD VDD POR ENABLE Q Q Q GND R R R ST D ST D ST D LATCH D0 Q0 Q1 Q7 SERIAL-IN 8-bit shift register R D0 to D7 CLOCK SERIAL-OUT D Q R CK Truth Table CLOCK LATCH ENABLE SERIAL-IN OUT0 OUT5 OUT7 SERIAL-OUT H L Dn Dn Dn 5 Dn 7 No change L L Dn + 1 No Change No change H L Dn + 2 Dn + 2 Dn 3 Dn 5 No change X H Dn + 3 OFF No change X H Dn + 3 OFF Dn 4 Note 1: OUT0 to OUT7 = On when Dn = H OUT0 to OUT7 = Off when Dn = L. 2 2010-03-08