Product Summary

The MC3523U is a overvoltage sensing circuit (OVP) protects sensitive electronic circuity from overvoltage transistors or regulator failures when used in conjunction with an external "crowbar" SCR. The unit senses the overvoltage condition and quickly "crowbar" or short circuit the supply, forcing the supply into current limiting or opening the fuse or circuit breaker. The protection voltage threshold is adjustable and the MC3523U can be programmed for minimum duration of overvoltage condition before tripping, thus supplying noise immunity.

Parametrics

MC3523U absolute maximum ratings: (1)Different power supply voltage, VCC-VEE: 40Vdc; (2)Sense voltage, Vsense1: 6.5Vdc; (3)Sense voltage, Vsense2: 6.5Vdc; (4)Remote activation input voltage, Vact: 7Vdc; (5)Output current, IO: 300mA; (6)Operating ambient temperature range, Ta: -55 to +125℃; (7)Operating junction temperature, TJ: 125℃; (8)Storage temperature range, Tstg: -65 to +150℃.

Features

MC3523U features: (1)Supply voltage range, VCC-VEE: 4.5 to 40V; (2)Output voltage, VO: VCC-2.2 to VCC-1.8V; (3)Indicator output voltage, VOL: 0.1 to 0.4V; (4)Sense trip voltage, Vsense: 2.45 to 2.75V; (5)Temperature coefficient of Vsense1: IIH: 5 to 40μA; IIL: -120 to -180μA; (6)Source current, Isource: 0.1 to 0.3mA.

Diagrams

MC3523U block diagram

MC35100V1-000U-A99
MC35100V1-000U-A99

FAN 35X10MM 5VDC 0.75W 7CFM
Data Sheet
0-1: $4.03
1-10: $3.70
10-25: $3.36
25-50: $3.02
50-100: $2.77
100-250: $2.65
250-500: $2.48
500-1000: $2.31
MC35100V1-000U-F99
MC35100V1-000U-F99

FAN DC 35X10 5V .15A 9500RPM
Data Sheet
0-500: $3.10
MC35100V2-000U-A99
MC35100V2-000U-A99

FAN 35X10MM 5VDC 0.38W 6.5CFM
Data Sheet
0-1: $4.39
1-10: $4.03
10-25: $3.66
25-50: $3.29
50-100: $3.02
100-250: $2.88
250-500: $2.70
500-1000: $2.52
MC35101V1-000U-A99
MC35101V1-000U-A99

FAN 35X10MM 12VDC 0.72W 7CFM
Data Sheet
0-1: $4.90
1-10: $4.49
10-25: $4.08
25-50: $3.67
50-100: $3.37
100-250: $3.21
250-500: $3.01
500-1000: $2.81
MC35101V2-000U-A99
MC35101V2-000U-A99

FAN 35X10MM 12VDC 0.52W 6.5CFM
Data Sheet
0-1: $4.90
1-10: $4.49
10-25: $4.08
25-50: $3.67
50-100: $3.37
100-250: $3.21
250-500: $3.01
500-1000: $2.81
MC35171
MC35171
Other

Data Sheet
Negotiable