UCC3912DPTR ,0-3A, 3-8V Single Hot-Swap IC Hi-Side MOSFET, Commercial Temp.maximum ratings over operating free-air temperature (unless otherwise noted)VIN . . . . . . . . . . ..
UCC3912DPTR ,0-3A, 3-8V Single Hot-Swap IC Hi-Side MOSFET, Commercial Temp.maximum ratings” may cause permanent damage to the device. These are stress ratings only, andfuncti ..
UCC3912DPTRG4 , Programmable Hot Swap Power Manager
UCC3912N , Programmable Hot Swap Power Manager
UCC3912N , Programmable Hot Swap Power Manager
UCC3912N , Programmable Hot Swap Power Manager
UPB321611T-121Y-N , SMD Chip Beads
UPB412 , 2048 BIT BIPOLAR TTL
UPB424C , 4096 BIT BIPOLAR TTL
UPB425C , 4096 BIT BIPOLAR TTL
UPB426C , 4096 BIT BIPOLAR TTL
UPB426D , 4096 BIT BIPOLAR TTL
UCC3912DP-UCC3912DPG4-UCC3912DPTR-UCC3912PWP-UCC3912PWPTR
0-3A, 3-8V Single Hot-Swap IC Hi-Side MOSFET, Commercial Temp.
Electronic Circuit Breaker Function 1µA ICC When Disabled Programmable On-Time Programmable Start Delay Fixed 3% Duty CycleAbove the Programmed Fault Level or to a
Full 4 A Power SOIC, Low-Thermal Resistance
Packaging
descriptionThe UCC3912 family of hot swap power managers provides complete power management, hot swap capability,
and circuit breaker functions. The only component required to operate the device, other than supply bypassing,
is the fault timing capacitor, CT . All control and housekeeping functions are integrated, and externally
programmable. These include the fault current level, maximum output-sourcing current, maximum fault time,
and startup delay. In the event of a constant fault, the internal fixed 3% duty cycle ratio limits average output
power.
The internal 4-bit DAC allows programming of the fault level current from 0 A to 3 A with 0.25-A resolution. The
IMAX control pin sets the maximum sourcing current to 1 A above the fault level when driven low, and to a full
4 A when driven high for applications which require fast output capacitor charging.
When the output current is below the fault level, the output MOSFET is switched on with a nominal on resistance
of 0.15 Ω. When the output current exceeds the fault level, but is less than the maximum sourcing level, the
output remains switched on, but the fault timer starts charging CT . Once CT charges to a preset threshold, the
switch is turned off, and remains off for 30 times the programmed fault time. When the output current reaches
the maximum sourcing level, the MOSFET transitions from a switch to a constant current source. (continued)
block diagramUDG-99146B0B2 SHTDWN
1.5 V
FAULTIMAX
GND HEATSINK
GND PINS
OVERCURRENT
COMPARATOR VIN
VIN
VOUT
VOUT
FET
4 BIT DAC
Please be aware that an important notice concerning availability, standard warranty, and use in critical applications of
Texas Instruments semiconductor products and disclaimers thereto appears at the end of this data sheet.
