Datasheet TCTH011AE, TCTH012AE, TCTH021AE, TCTH022AE, TCTH011BE, TCTH012BE, TCTH021BE, TCTH022BE (Toshiba) - 7

TCTH0xxxE Series Application Note 10.1. Operation description (TCTH0x1AE, TCTH0x1BE)
PTCO output current and PTC Thermistor(s) resistance, external y placed near the heat source determines the voltage level on PTCO pin. When this terminal-voltage exceeds the specified voltage, immediately PTCGOOD pin outputs “Low”. When PTCO pin voltage become lower than the specified voltage, automatical y returns and PTCGOOD pin outputs “High” (TCTH0x1AE), or “High-impedance” (TCTH0x1BE). Detecting temperature varies on selection of PTC thermistor(s). If the detection on higher temperature than this IC operation range is necessary, take care the PCB designing and keep enough distance between PTC Thermistor(s) and this IC to avoid heat propagation to this IC.
TCTH0x1AE
VDD PTCGOOD TCTH0x1AE GND2 PTC PTC PTC GND1 PTCO Thermistor Thermistor Thermistor
TCTH0x1BE TCTH0x1xE Timing chart
Voltage VDD VUVLO VUVLO 0 Times Temerature Temperature Detect　Temp. (set by PTC thermistor select) 0 Times Voltage VDETHYS VDET PTCO 0 Times Voltage H PTCGOOD et e i ti ni n f if (Note 6) e e d d n n L I I Times t t MASK DET1 DET2 MASK 20 μs(Typ.) 20 μs(Typ.) Note 6: TCTH0x1 BE is using Open-drain output. Therefore, PTCGOOD pin of TCTH0x1BE outputs High-impedance instead of “High”. © 2023 7 2023-04-25 Toshiba Electronic Devices & Storage Corporation Rev. 2.0