Datasheet A6275 (Allegro) - 6

Serial-Input Constant-Current Latched LED Driver A6275 with Open LED Detection and Dot Correction SWITCHING CHARACTERISTICS at TA = 25°C, VDD = VIH = 5 V, VCE = 0.4 V, VIL = 0 V, REXT = 470 Ω, IO = 40 mA, VL = 3 V, RL = 65 Ω, CL = 10.5 pF. Limits Characteristic Symbol Test Conditions Min. Typ. Max. Unit
Propagation Delay Time tpHL CLOCK-OUTn – 350 1000 ns LATCH-OUTn – 350 1000 ns ENABLE-OUTn – 350 1000 ns CLOCK-SERIAL DATA OUT – 40 – ns Propagation Delay Time tpLH CLOCK-OUTn – 300 1000 ns LATCH-OUTn – 300 1000 ns ENABLE-OUTn – 300 1000 ns CLOCK-SERIAL DATA OUT – 40 – ns Output Fall Time tf 90% to 10% voltage 150 350 1000 ns Output Rise Time tr 10% to 90% voltage 150 300 600 ns
RECOMMENDED OPERATING CONDITIONS Characteristic Symbol Conditions Min. Typ. Max. Unit
Supply Voltage VDD 4.5 5.0 5.5 V Output Voltage VO – 1.0 4.0 V Output Current IO Continuous, any one output – – 90 mA IOH SERIAL DATA OUT – – -1.0 mA IOL SERIAL DATA OUT – – 1.0 mA Logic Input Voltage VIH 0.7VDD – VDD + 0.3 V VIL -0.3 – 0.3VDD V Clock Frequency fCK Cascade operation – – 10 MHz Allegro MicroSystems, Inc. 5 115 Northeast Cutoff Worcester, Massachusetts 01615-0036 U.S.A. 1.508.853.5000; www.allegromicro.com