Battery Protector Datasheet ITV9550 30A/45A Series Surface Mount Description ITV9550 Series is a chip type surface mountable device that can protect against both overcurrent and overcharging. It comprises a fuse element to ensure stable operation under normal electrical current and to cut off the current when overcurrent occurs. It also comprises a resistive heating element that could be used in combination with a voltage detecting means, such as IC and FET. When overvoltage is detected, the heating element is electrically excited to generate heat to blow the fuse element to achieve overvoltage protection. Features & Benefits Halogen Free Protection for both overcurrent and overcharging Surface Mount Agency Approvals Fast response Agency Agency File Number Ampere Range E10480 30 A, 45 A Applications TA 50461285 30 A, 45 A V acuum cleaner E-bike Thermal Derating Characteristics P ower tools UPS E-scooter Ambient Operating Temperature 25C 40C 60C Recommend ITV9550 30A Series 34.0 30.0 25.0 Rated Current (A) ITV9550 45A Series 49.0 44.5 37.0 Electrical Characteristics Resistance Agency Approvals I Cells in V I V rated max break OP Part Number Ordering Code R R heater fuse (A) Series (Vdc) (A) (V) () (m) ITV9550L1230 ITV9550L1230MR 30 3 85 80 8.4 ~ 13.2 3.2 ~ 5.2 0.5 ~ 2.5 X X ITV9550L1430 ITV9550L1430MR 30 4 85 80 11.1 ~ 18.4 6.3 ~ 9.3 0.5 ~ 2.5 X X ITV9550L1830 ITV9550L1830MR 30 4~5 85 80 10.5 ~ 23.5 4.8 ~ 8.0 0.5 ~ 2.5 X X ITV9550L2030 ITV9550L2030MR 30 5 85 80 14.0 ~ 23.4 10.0 ~ 15.0 0.5 ~ 2.5 X X ITV9550L3030 ITV9550L3030MR 30 6~7 85 80 20.2 ~ 31.5 18.8 ~ 31.2 0.5 ~ 2.5 X X ITV9550L4030 ITV9550L4030MR 30 9~10 85 80 28.0 ~ 46.9 40.0 ~ 60.0 0.5 ~ 2.5 X X ITV9550L5030 ITV9550L5030MR 30 12~14 85 80 39.6 ~ 62.0 72.4 ~ 120.6 0.5 ~ 2.5 X X ITV9550L1245 ITV9550L1245MR 45 3 85 120 9.8 ~ 13.5 1.9 ~ 3.4 0.4 ~ 2.0 X X ITV9550L1445 ITV9550L1445MR 45 4 85 120 13.0 ~ 18.4 3.4 ~ 6.0 0.4 ~ 2.0 X X ITV9550L2045 ITV9550L2045MR 45 5 85 120 16.7 ~ 23.5 5.6 ~ 9.9 0.4 ~ 2.0 X X ITV9550L3045 ITV9550L3045MR 45 6~7 85 120 22.3 ~ 31.5 10.0 ~ 17.7 0.4 ~ 2.0 X X ITV9550L4045 ITV9550L4045MR 45 9~10 85 120 33.0 ~ 46.9 22.0 ~ 38.7 0.4 ~ 2.0 X X ITV9550L5045 ITV9550L5045MR 45 12~14 85 120 43.7 ~ 62.0 38.5 ~ 68.0 0.4 ~ 2.0 X X Current Capacity 100% x I , No Melting rated Cut Time 200% x I , < 1 min rated 100A, power on 5 ms, power off 995 ms, 10000 cycles (ITV9550 30A series) Interrupting Current 150A, power on 5 ms, power off 995 ms, 10000 cycles (ITV9550 45A series), No Melting Over Voltage Operation In operation voltage range, the fusing time is <1min. Notes: Cells in series = Number of battery cells connected in series in the circuit for ITV device to protect. I = Current carrying capacity that is measured at 40C thermal equilibrium condition Value specified is determined by using the PWB with 6mm*2oz copper traces, AWG10 covered wire, and rated I = The current that the fuse element is able to interrupt 0.6mm glass epoxy PCB for ITV9550 30A Series break V = The maximum voltage that can be cut off by fuse Value specified is determined by using the PWB with 25mm*2oz copper traces, AWG8 covered wire, and max V = Range of operation voltage 0.6mm glass epoxy PCB for ITV9550 45A Series OP R = The resistance of the heating element Specifications are subject to change without notice. heater R = The resistance of the fuse element fuse 2021 Littelfuse, Inc. 1 Specifications are subject to change without notice. Revised: GD. 03/12/21Battery Protector Datasheet ITV9550 30A/45A Series Surface Mount Cut Time by Heater Operation (ITV9550 30A Series) Various heater wattage at 25C ambient temperature Constant heater wattage at various ambient temperature 100 100 10 10 14W 50W 1 1 0.1 0.1 0 10 20 30 40 50 60 70 -20 0 20 40 60 80 100 Power (W) Ambient Temperature (C) Cut Time by Heater Operation (ITV9550 45A Series) Various heater wattage at 25C ambient temperature Constant heater wattage at various ambient temperature 100 100 33W 100W 10 10 1 1 0.1 0.1 0 20 40 60 80 100 120 -20 0 20 40 60 80 100 Power (W) Ambient Temperature (C) Cut Time by Current Operation (ITV9550 30A Series) Various interrupting current at 25C ambient temperature Constant 2x rated current at various ambient temperature 100 100 10 1 10 0.1 0.01 0.001 1 0 50 100 150 200 -20 0 20 40 60 80 100 Ambient Temperature (C) Interrupting Current (A) 2021 Littelfuse, Inc. 2 Specifications are subject to change without notice. Revised: GD. 03/12/21 Cut Time (s) Cut Time (s) Cut Time (s) Cut Time (s) Cut Time (s) Cut Time (s)