TC62D776CFG Datasheet, PDF (16/33 Pages) Toshiba Semiconductor – 16-Channel Constant-Current LED Driver of the 3.3-V and 5-V Power Supply

TC62D776CFG
Thermal shutdown function (TSD)
If the internal temperature of the IC exceeds 150°C, the thermal shutdown (TSD) circuitry trips, turning off all
constant-current outputs. When the temperature drops below the TSD release threshold, the TC62D776CFG
restarts constant-current output.
Since TSD is not intended to protect the IC against permanent damage. it should not be employed actively to
monitor chip temperature.
Output delay function
In order to reduce di/dt caused by simultaneously switching outputs, the TC62D776CFG allows for delays
(t_{DLY (ON)}, t_{DLY (OFF)}) between contiguous outputs.
Switching time difference between outputs are provided in order as follows;
OUT0 → OUT15 → OUT7 → OUT8 → OUT1→ OUT14 → OUT6 → OUT9 → OUT2 → OUT13 →
OUT5 → OUT10 → OUT3 → OUT12 → OUT4 → OUT11
Power on reset function (POR)
The TC62D776CFG provides a power-on reset to reset all internal data in order to prevent malfunctions.
The POR circuitry works properly only when V_DD rises from 0 V. To re-activate the POR circuitry, V_DD must be
brought to less than 0.1 V. Internal data is guaranteed to be retained after V_DD exceeds 3.0 V.
VDD=3.0V
VDD=2.8 V
V_{DD waveform}
V_DD voltage for guaranteed data
V_DD voltage for end of reset
VDD=0.1 V
End of POR
VDD=0 V
POR working range _{Beyond POR working range}
POR working range
16
2011-12-07