Unitrode UCC3918
The UCC3918 low on-resistance hot swap power manager provides complete power management, hot swap capability, and circuit breaker functions. The only components needed to operate the device, other than supply bypassing, are a timing capacitor, and two programming resistors. These include the fault current level, maximum output sourcing current, maximum fault time, and startup delay.| Part No. | UCC3918 |
|---|---|
| Datasheet | UCC3918 Download |
| Manufacturer |  Unitrode |
| Description | Low On-Resistance Hot Swap Power Manager |
| Buy | Stock & Price |
ą UCC3918 LOW ONĆRESISTANCE HOT SWAP POWER MANAGER D Integrated 0.075-Ω Power MOSFET D 3 V to 6 V Operation D External Analog Control of Fault Current from 0 A to 4 A D Independent Analog Control of Current Limit Up to 5 A D Fast Overload Protection D Unidirectional Switch D Minimal External Components D 1-µA ICC When Disabled D Programmable On Time D Programmable Start Delay D Fixed 3% Duty Cycle SLUS384B – NOVEMBER 1999 – REVISED JUNE 2000 DP PACKAGE (TOP VIEW) VIN VIN VIN GND* GND* FAULT SHTDWN IFAULT 1 2 3 4 5 6 7 8 16 VOUT 15 VOUT 14 VOUT 13 GND* 12 GND* 11 NC 10 CT 9 IMAX Pin 5 serves as the lowest impedance to the electrical ground. Pins 4, 12, and 13, serve as heat sink/ground. These pins should be connected to large etch PCB areas to help dissipate heat. description All control and housekeeping functions are integrated, and externally programmable. In the event of a constant fault, the internal fixed 3% duty cycle ratio limits the average output power. The IFAULT pin allows linear programming of the fault level current from 0 A to 4 A.
