Battery Protector Datasheet
ITV9550 30A/45A/60A 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
■ Surface Mount
■ Fast response
■ Protection for both
overcurrent and overcharging
Agency Approvals
Agency
Agency File Number
Ampere Range
Applications
■ Vacuum cleaner
■ Power tools
E10480
TA 50461285
30 A, 45 A
30 A, 45 A
■ E-bike
■ UPS
Thermal Derating Characteristics
■ E-scooter
Ambient OperatingTemperature
25°C
40°C
60°C
ITV9550 30A Series
ITV9550 45A Series
ITV9550 60A Series
34.0
49.0
67.0
30.0
44.5
60.0
25.0
37.0
49.0
Recommend
Rated Current (A)
Electrical Characteristics
Resistance
Agency Approvals
Irated
(A)
Cells in
Series
Vmax
(Vdc)
Ibreak
(A)
VOP
(V)
Part Number
Ordering Code
Rheater (Ω)
3.2 ~ 5.2
6.3 ~ 9.3
4.8 ~ 8.0
Rfuse (mΩ)
0.5 ~ 2.5
0.5 ~ 2.5
0.5 ~ 2.5
0.5 ~ 2.5
0.5 ~ 2.5
0.5 ~ 2.5
0.5 ~ 2.5
0.4 ~ 2.0
0.4 ~ 2.0
0.4 ~ 2.0
0.4 ~ 2.0
0.4 ~ 2.0
0.4 ~ 2.0
ITV9550L1230
ITV9550L1430
ITV9550L1830
ITV9550L2030
ITV9550L3030
ITV9550L4030
ITV9550L5030
ITV9550L1245
ITV9550L1445
ITV9550L2045
ITV9550L3045
ITV9550L4045
ITV9550L5045
ITV9550L1260
ITV9550L1460
ITV9550L2060
ITV9550L3060
ITV9550L4060
ITV9550L5060
Current Capacity
CutTime
ITV9550L1230MR
ITV9550L1430MR
ITV9550L1830MR
ITV9550L2030MR
ITV9550L3030MR
ITV9550L4030MR
ITV9550L5030MR
ITV9550L1245MR
ITV9550L1445MR
ITV9550L2045MR
ITV9550L3045MR
ITV9550L4045MR
ITV9550L5045MR
ITV9550L1260MR
ITV9550L1460MR
ITV9550L2060MR
ITV9550L3060MR
ITV9550L4060MR
ITV9550L5060MR
30
30
30
30
30
30
30
45
45
45
45
45
45
60
60
60
60
60
60
3
4
4~5
5
6~7
9~10
12~14
3
85
85
85
85
85
85
85
85
85
85
85
85
85
80
80
80
80
80
80
80
80
80
80
80
8.4 ~ 13.2
11.1 ~ 18.4
10.5 ~ 23.5
X
X
X
X
X
X
X
X
X
X
X
X
X
X
X
X
X
X
X
X
X
X
X
X
X
X
X
X
X
X
X
X
X
X
X
X
X
X
14.0 ~ 23.4 10.0 ~ 15.0
20.2 ~ 31.5 18.8 ~ 31.2
28.0 ~ 46.9 40.0 ~ 60.0
39.6 ~ 62.0 72.4 ~ 120.6
80
80
120
120
120
120
120
120
160
160
160
160
160
160
9.8 ~ 13.5
13.0 ~ 18.4
16.7 ~ 23.5
1.9 ~ 3.4
3.4 ~ 6.0
5.6 ~ 9.9
4
5
6~7
9~10
12~14
3
4
5
6~7
9~10
12~14
22.3 ~ 31.5 10.0 ~ 17.7
33.0 ~ 46.9 22.0 ~ 38.7
43.7 ~ 62.0 38.5 ~ 68.0
9.6 ~ 13.5 1.83 ~ 3.70 ≦ 2.0Typical 0.6*
13.0 ~ 18.4 3.4 ~ 6.7 ≦ 2.0Typical 0.6*
16.7 ~ 23.5 5.6 ~ 11.1 ≦ 2.0Typical 0.6*
22.3 ~ 31.5 10.0 ~ 19.9 ≦ 2.0Typical 0.6*
33.0 ~ 46.9 22.0 ~ 43.5 ≦ 2.0Typical 0.6*
43.7 ~ 62.0 38.5 ~ 77.0 ≦ 2.0Typical 0.6*
100% x Irated, No Melting
200% x Irated, < 1 min
100A, power on 5 ms, power off 995 ms, 10000 cycles (ITV9550 30A series), No Melting
150A, power on 5 ms, power off 995 ms, 10000 cycles (ITV9550 45A series), No Melting
250A, power on 5 ms, power off 995 ms, 10000 cycles (ITV9550 60A series), No Melting
In operation voltage range, the fusing time is <1min.
Interrupting Current
Over Voltage Operation
Notes:
Irated = Current carrying capacity that is measured at 40°C thermal equilibrium condition
break = The current that the fuse element is able to interrupt
Vmax = The maximum voltage that can be cut off by fuse
OP = Range of operation voltage
Rheater = The resistance of the heating element
fuse = The resistance of the fuse element
* The typical resistance of the fuse element is measured by our special probe and fixture for ITV9550 60A Series.
Cells in series = Number of battery cells connected in series in the circuit for ITV device to protect.
• Value specified is determined by using the PWB with 6mm*2oz copper traces, AWG10 covered wire, and
0.6mm glass epoxy PCB for ITV9550 30A Series
• Value specified is determined by using the PWB with 25mm*2oz copper traces, AWG8 covered wire, and
0.6mm glass epoxy PCB for ITV9550 45A Series
• Value specified is determined by using the PWB with 25mm*3oz copper traces, AWG6 covered wire, and
0.6mm glass epoxy PCB for ITV9550 60A Series
I
V
R
• Specifications are subject to change without notice.
© 2023 Littelfuse, Inc.
Specifications are subject to change without notice.
Revised: GD. 08/22/23
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