Ttp135am is a Pyroelectric infrared sensor controller integrated circuit.
Characteristic
 voltage operating range: 4.5v-5.5v
 working current @ VDD = 5.0V, no load < 60ua
 provide a delay timer of 3 seconds to 15 minutes (or 6 seconds to 30 minutes)
 provide manual switch to change automatic detection mode (auto) and manual switch to constant light mode (PMO: personal manual)
Override)
Provide two-stage brightness of the output (two level), no light in the daytime, no induction at night, maintain low light output, and induction at night
High brightness output
 ambient luminance detection input (PHI)
 dimming function (8 seconds dimming to 30% brightness + 1.1 seconds dimming off)
 constant brightness 6 hours function
 manual night light function
 built in low voltage linear regulator (LDO)