UCC2946TPWRQ1 ,Microprocessor Supervisor with Watchdog TimerFEATURES• Qualified for Automotive Applications • 2% Accurate Reset Threshold• Fully Programmable R ..
UCC2946TPWRQ1 ,Microprocessor Supervisor with Watchdog TimerELECTRICAL CHARACTERISTICST = –40°C to 105°C, 2.1 V≤ V≤ 5.5 V (unless otherwise noted)A DDPARAMETER ..
UCC2946TPWRQ1 ,Microprocessor Supervisor with Watchdog Timer/packaging.PW PACKAGE(TOP VIEW)GND 1 8 VDDRTH 2 7 WDIRES 3 6 WPRP 4 5 WDOTERMINAL FUNCTIONSTERMINAL ..
UCC2960 ,Primary Side Startup Controllermaximum ratings over operating free-air temperature range (unless otherwise noted)Input voltage, V ..
UCC2960D ,Primary Side Startup Controllerelectrical characteristics V = 12 V, RT = 53.3 kW , C = 1 m F, C = 0.1 mF, C = 0.01 m F,DD VDD REF ..
UCC2961 ,Advanced Primary Side Startup Controller . / SLUS431A – MAY 2000 – REVISED DECEMBER 2000 Opera ..
UPA1950 ,Pch enhancement-type MOS FETFEATURES12 3• 1.8 V drive available• Low on-state resistance0.65DS(on)1 = 130 mΩ MAX. (VGS = –4.5 V ..
UPA1950TE ,P-CHANNEL MOS FIELD EFFECT TRANSISTOR FOR SWITCHINGFEATURES12 3• 1.8 V drive available• Low on-state resistance0.65DS(on)1 = 130 mΩ MAX. (VGS = –4.5 V ..
UPA1950TE-T1 ,Pch enhancement-type MOS FETELECTRICAL CHARACTERISTICS (TA = 25°C)CHARACTERISTICS SYMBOL TEST CONDITIONS MIN. TYP. MAX. UNITZer ..
UPA1951TE ,P-CHANNEL MOS FIELD EFFECT TRANSISTOR FOR SWITCHINGDATA SHEETMOS FIELD EFFECT TRANSISTORµµµµ PA1951P-CHANNEL MOS FIELD EFFECT TRANSISTORFOR SWITCHING ..
UPA1951TE-T1 ,Pch enhancement type MOS FETDATA SHEETMOS FIELD EFFECT TRANSISTORµµµµ PA1951P-CHANNEL MOS FIELD EFFECT TRANSISTORFOR SWITCHING ..
UPA1952TE ,P-CHANNEL MOS FIELD EFFECT TRANSISTOR FOR SWITCHINGDATA SHEETMOS FIELD EFFECT TRANSISTORµµµµ PA1952P-CHANNEL MOS FIELD EFFECT TRANSISTORFOR SWITCHING ..
UCC2946TPWRQ1
Automotive Catalog Microprocessor Supervisor With Watchdog Timer
WDIVDD
POWER TO
CIRCUITRY
CLK
CLR
8−BIT
COUNTER
400 nA
WDO
GND
EDGE DETECT
WATCHDOG
TIMING
100 mV
1.235 VRTHRP
400 nA
POWER ON RESET
RESQR SQRQR
1.235 V Fully Programmable Fully Programmable UCC2946
remains asserted until the VDD voltage rises and remains above the reset threshold for the reset period. Both
reset threshold and reset period are programmableby the user.
The UCC2946 also resistantto glitches on the VDD line. Once RES has been deasserted, any drops below
the threshold needto beof certain time duration and voltage magnitudeto generatea reset signal.
These shownin Figure1. An I/O lineof the microprocessor may be tiedto the watchdog input (WDI)
for watchdogIf the I/O lineis not toggled withina set watchdog period, programmable by the user,
WDOis asserted. The watchdog functionis disabled during reset conditions.
The UCC2946is availablein 8-pin TSSOP (PW) packageto optimize board space.
