The TMAP 2409S from Traco Power is a DC to DC Converter with Input Voltage 21.6 to 26.4 V, Output Voltage 1 9 V, Output Current 1 0.11 A, Output Power 1 W, Isolation Voltage 3 kV. Tags: Through Hole, Buck/Step down. More details for TMAP 2409S can be seen below.