Electronic Components Datasheet Search |
|
UCC281DP-5 Datasheet(PDF) 2 Page - Texas Instruments |
|
|
UCC281DP-5 Datasheet(HTML) 2 Page - Texas Instruments |
2 / 10 page 2 UCC281-3/-5/-ADJ UCC381-3/-5/-ADJ ABSOLUTE MAXIMUM RATINGS VIN. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 9V CT . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . −0.3 to 3V Storage Temperature . . . . . . . . . . . . . . . . . . . −65°C to +150°C Junction Temperature . . . . . . . . . . . . . . . . . . . −55°C to +150°C Lead Temperature (Soldering, 10 sec.) . . . . . . . . . . . . . +300 °C Currents are positive into, negative out of the specified terminal. Consult Packaging Section of Databook for thermal limitations and considerations of packages. All voltages are referenced to GND. ELECTRICAL CHARACTERISTICS: Unless otherwise stated, these specifications hold for TA = 0 °C to 70°C for the UCC381-X series and −40°C to +85°C for the UCC283-X series, VIN =VOUT + 1.5V, IOUT = 0mA, COUT = 2.2µF. CT = 1500pF for the UCC381-ADJ version and VOUT set to 5V. TJ = TA. PARAMETER TEST CONDITIONS MIN TYP MAX UNITS UCC381-5 Fixed 5V, 1A Family Output Voltage TJ = 25°C 4.925 5 5.075 V Over Temperature 4.875 5.125 V Line Regulation VIN = 5.15V to 9V 1 3 mV Load Regulation IOUT = 0mA to 1A 2 5 mV Drop Out Voltage, VIN –VOUT IOUT = 1A, VOUT = 4.85V, TA < 85°C 0.5 0.6 V IOUT = 200mA, VOUT = 4.85V, TA < 85°C 100 200 mV Peak Current Limit VOUT = 0V 2 3.5 A Overcurrent Threshold 1 1.8 A Current Limit Duty Cycle VOUT = 0V 3 5 % Overcurrent Time Out, TON VOUT = 0V 400 750 1600 µs Quiescent Current 400 650 µA Quiescent Current in Shutdown VIN = 9V 10 25 µA Shutdown Threshold At CT Input 0.25 0.65 V Reverse Leakage Current 1V < VIN <VOUT,VOUT < 5.1V, at VOUT 75 µA UVLO Threshold VIN where VOUT passes current 2.5 2.8 3.0 V Short circuit current is internally limited. The device re- sponds to a sustained overcurrent condition by turning off after a TON delay. The device then stays off for a pe- riod, TOFF, that is 32 times the TON delay. The device then begins pulsing on and off at the TON /(TON+TOFF) duty cycle of 3%. This drastically reduces the power dis- sipation during short circuit such that heat sinking, if at all required, must only accommodate normal operation. On the fixed output versions of the device TON is fixed at 400 µs − a guaranteed minimum. On the adjustable ver- sion an external capacitor sets the on time. The off time is always 32 times TON. The UCC381 can be shutdown to 25 µA (max) by pulling the CT pin low. Internal power dissipation is further controlled with ther- mal overload protection circuitry. Thermal shutdown oc- curs if the junction temperature exceeds 165 °C. The chip will remain off until the temperature has dropped 20 °C. The UCC281 series is specified for operation over the in- dustrial range of −40°C to +85°C, and the UCC381 se- ries is specified from 0 °Cto+70°C. These devices are available in the 8 pin DP surface mount power package. For other packaging options consult the factory. DESCRIPTION (cont.) 1 2 3 4 8 7 6 5 GND VOUT VOUTS GND GND VIN CT* GND CONNECTION DIAGRAMS SOIC-8 (Top View) DP Package * ADJ version only |
Similar Part No. - UCC281DP-5 |
|
Similar Description - UCC281DP-5 |
|
|
Link URL |
Privacy Policy |
ALLDATASHEET.NET |
Does ALLDATASHEET help your business so far? [ DONATE ] |
About Alldatasheet | Advertisement | Contact us | Privacy Policy | Link Exchange | Manufacturer List All Rights Reserved©Alldatasheet.com |
Russian : Alldatasheetru.com | Korean : Alldatasheet.co.kr | Spanish : Alldatasheet.es | French : Alldatasheet.fr | Italian : Alldatasheetit.com Portuguese : Alldatasheetpt.com | Polish : Alldatasheet.pl | Vietnamese : Alldatasheet.vn Indian : Alldatasheet.in | Mexican : Alldatasheet.com.mx | British : Alldatasheet.co.uk | New Zealand : Alldatasheet.co.nz |
Family Site : ic2ic.com |
icmetro.com |