Figure 1. Block Diagram
Table 1. FUNCTIONAL PIN DESCRIPTION
This pin is the source of the internal power FET and the output terminal of the fuse.
A resistor between this pin and the source pin sets the overload and short circuit current limit
8 Enable/Fault The enable/fault pin is a tri−state, bidirectional interface. It can be used to enable or disable the
output of the device by pulling it to ground using an open drain or open collector device. If a ther-
mal fault occurs, the voltage on this pin will go to an intermediate state to signal a monitoring cir-
cuit that the device is in thermal shutdown. It can also be connected to another device in this fami-
ly to cause a simultaneous shutdown during thermal events.
The internal dv/dt circuit controls the slew rate of the output voltage at turn on. It has an internal
capacitor that allows it to ramp up over a period of 1.4 ms. An external capacitor can be added to
this pin to increase the ramp time. If an additional time delay is not required, this pin should be left
Negative input voltage to the device. This is used as the internal reference for the IC.
11 (belly pad)
VCC Positive input voltage to the device.
Input Voltage, operating, steady−state (VCC to GND, Note 1)
Thermal Resistance, Junction−to−Air
0.1 in2 copper (Note 2)
0.5 in2 copper (Note 2)
−0.6 to 12
Thermal Resistance, Junction−to−Lead (Pin 1)
Thermal Resistance, Junction−to−Case
Total Power Dissipation @ TA = 25°C
Derate above 25°C
Operating Temperature Range (Note 3)
−40 to 150
Nonoperating Temperature Range
−55 to 155
Lead Temperature, Soldering (10 Sec)
TL 260 °C
Stresses exceeding those listed in the Maximum Ratings table may damage the device. If any of these limits are exceeded, device functionality
should not be assumed, damage may occur and reliability may be affected.
1. Negative voltage will not damage device provided that the power dissipation is limited to the rated allowable power for the device.
2. 1 oz copper, double−sided FR4.
3. Thermal limit is set above the maximum thermal rating. It is not recommended to operate this device at temperatures greater than the
maximum ratings for extended periods of time.