UCC384DP-ADJ ,12maximum ratings over operating free-air temperature (unless otherwise noted)‡Input voltage range , ..
UCC384DP-ADJG4 ,Low-Dropout, 0.5-A, Negative Linear Regulator 8-SOIC 0 to 70block diagram(+)4 GND1– A µR1 R2DISCHARGEUCC384–ADJ 0 OPEN+–2.2 VSHUTDOWN UCC384–5 375K 125K–0.7 V ..
UCC38500DW ,BiCMOS PFC/PWM Combination Controllermaximum ratings over operating free-air temperature (unless otherwise noted)Supply Voltage VCC . . ..
UCC38500DWG4 ,BiCMOS PFC/PWM Combination Controller 20-SOIC 0 to 70electrical characteristics T = 0°C to 70°C for the UCC3850X, –40°C to 85°C for the UCC2850X,AT = T ..
UCC38500DWTR , BICMOS PFC/PWM COMBINATION CONTROLLER
UCC38500N ,BiCMOS PFC/PWM Combination Controllermaximum ratings” may cause permanent damage to the device. These are stress ratings only, andfuncti ..
UPA829TF ,NPN SILICON HIGH FREQUENCY TRANSISTORapplications.1ABSOLUTE MAXIMUM RATINGS (TA = 25°C)SYMBOLS PARAMETERS UNITS RATINGS0.6 ± 0.1VCBO Col ..
UPA829TF-T1 ,NPN silicon high frequency transistor.applications.1ABSOLUTE MAXIMUM RATINGS (TA = 25°C)SYMBOLS PARAMETERS UNITS RATINGS0.6 ± 0.1VCBO Col ..
UPA831TC ,NPN SILICON EPITAXIAL TRANSISTOR WITH 2 DIFFERENT ELEMENTS IN A FLAT-LEAD 6-PIN THIN-TYPE ULTRA SUPER MINIMOLD PACKAGEDATA SHEETNPN SILICON RF TWIN TRANSISTORPA831TCμ μ μ μNPN SILICON EPITAXIAL TRANSISTOR (WIT ..
UPA831TF ,Twin transistors equipped with different model chips(6P small MM)DATA SHEETNPN SILICON RF TWIN TRANSISTORPA831TCμ μ μ μNPN SILICON EPITAXIAL TRANSISTOR (WIT ..
UPA835TF ,NPN SILICON EPITAXIAL TWIN TRANSISTORFEATURES OUTLINE DIMENSIONS (Units in mm)• LOW NOISE:Package Outline TS06 (Top View)Q1:NF = 1.5 dB ..
UpA835TF-T1 ,NPN SILICON EPITAXIAL TWIN TRANSISTORapplications in the VHF/UHF band. Low4. Base (Q2)noise figures, high gain, high current capability ..
UCC284-ADJ-UCC384-ADJ-UCC384DP-12-UCC384DP-5-UCC384DP-5G4-UCC384DP-ADJ-UCC384DP-ADJG4
12
Low Quiescent Current Irrespective of Load Simple Logic Shutdown Interfacing –5 V, –12 V, and Adjustable Output 2.5% Duty Cycle Short Circuit Protection
descriptionThe UCC384-x family of negative linear-series pass regulators is tailored for low-dropout applications where
low-quiescent power is important. Fabricated with a BCDMOS technology ideally suited for low input-to-output
differential applications, the UCC384-x passes 0.5 A while requiring only 0.2 V of input-voltage headroom.
Dropout voltage decreases linearly with output current, so that dropout at 50 mA is less than 20 mV.
Quiescent current consumption for the device under normal (non-dropout) conditions is typically 200 μA. An
integrated charge pump is internally enabled only when the device is operating near dropout with low VIN. This
ensured that the device meets the dropout specifications even for maximum load current and a VIN of –3.2 V
with only a modest increase in quiescent current. Quiescent current is always less than 350 μA, with the charge
pump enabled. The quiescent current of the UCC384 does not increase with load current.
Short-circuit current is internally limited. The device responds to a sustained overcurrent condition by turning
off after a tON delay. The device then stays off for a period, t OFF , that is 40 times the tON delay. The device then
begins pulsing on and off at the tON/t OFF duty cycle of 2.5%. This drastically reduces the power dissipation during
short circuit such that heat sinking, if at all required, must only accommodate normal operation. An external
capacitor sets the on time. The off time is always 40 times tON.
The UCCx84-x can be shutdown to 45 μA (maximum) by pulling the SD/CT pin more positive than –0.7 V. To
allow for simpler interfacing, the SD/CT pin may be pulled up to 6 V above the ground pin without turning on
clamping diodes.
Internal power dissipation is further controlled with thermal-overload protection circuitry. Thermal shutdown
occurs if the junction temperature exceeds 140°C. The chip remains off until the temperature has dropped 20°C
(TJ = 120°C).
AVAILABLE OPTIONS All package types are available taped and reeled. Add TR suffix to device type
(e.g. UCC284DP–5TR) to order quantities of 3000 devices per reel.
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.
VIN
VOUT
VIN
GND
