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LED7706TR Datasheet(PDF) 10 Page - STMicroelectronics |
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LED7706TR Datasheet(HTML) 10 Page - STMicroelectronics |
10 / 31 page Electrical characteristics LED7706 10/31 Symbol Parameter Test condition Min Typ Max Unit OC and OV protections VTH,OVP Over voltage protection reference threshold (OVSEL) 1.190 1.234 1.280 V VTH,FRD Floating channel detection threshold 1.100 1.145 1.190 ∆V OVP,FRD Voltage gap between OVP and FRD thresholds 90 mV Soft-start and power management EN, Turn-On level threshold 1.4 1.6 V EN, Turn-off level threshold 0.8 1.0 DIM, high level threshold 1.15 1.3 DIM, low level threshold 0.8 1.09 EN, pull-up current 2.5 µA SS, charge current 4 5 6 SS, end-of-startup threshold 2.0 2.4 2.8 V SS, reduced switching frequency release threshold 0.8 Current generators section TDIM- ON,min Minimum dimming on-time RRILIM = 51 kΩ KR = 987 Irowx,nom = KR/RRILIM 500 ns ƒIrowx,1 rows current accuracy (1) ±2.0 % ƒIrowx,2 rows current mismatch(2) +4.0 VIFB Feedback regulation voltage 400 mV Vrowx, FAULT Shorted LED fault detection threshold MODE tied to SGND 3.4 V MODE connected to AVCC 6.0 TMASK LED short circuit detection masking time 100 µs VFAULT, LOW FAULT pin Low-Level voltage IFAULT,SINK = 4 mA 200 350 mV Thermal shutdown TSHDN Thermal shutdown turn-off temperature 150 °C Thermal shutdown hysteresis 30 1. Current accuracy calculated as ∆I rowx,1 = (Irowx-Irowx,NOM) / Irowx,NOM 2. Current Mismatch calculated as ∆Irowx,2 = |Irowx-Irowy| / Irowx,NOM Table 6. Electrical characteristics (continued) (VIN = 12 V; TA = 0 °C to 85 °C and LDO5 connected to AVCC if not otherwise specified) |
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