Electronic Components Datasheet Search |
|
UCC281DP-ADJ Datasheet(PDF) 4 Page - Texas Instruments |
|
|
UCC281DP-ADJ Datasheet(HTML) 4 Page - Texas Instruments |
4 / 10 page 4 UCC281-3/-5/-ADJ UCC381-3/-5/-ADJ PIN DESCRIPTIONS CT: For UCC381-3 and UCC381-5 versions, this is the shutdown pin which, when pulled low, turns off the regu- lator output and puts the device in a low current state. For the UCC381-ADJ version, a capacitor is required be- tween the CT pin and GND to set the TON time during overcurrent according to the following (typical) equation: TC ON CT =• 660 000 , GND: All voltages are measured with respect to this pin. This is the low noise ground reference input for regula- tion. The output decoupling capacitor should be tied to PIN 7. VIN: Positive supply input for the regulator. Bypass this pin to GND with at least 1 µF of low ESR, ESL capaci- tance if the source is located further than 1 inch from the device. VOUT: Output for regulator. The regulator does not re- quire a minimum output capacitor for stability. Choose the appropriate size capacitor for the application with re- spect to the required transient loading. For example, if the load is very dynamic, a large capacitor will smooth out the response to load steps. VOUTS: Feedback for regulator sensing of the output voltage. For loads which are a considerable resistive dis- tance from the VOUT pin, the VOUTS pin can be used to move the resistance into the control loop of the regulator, thereby effectively canceling the IR drop associated with the load path. For local regulation, merely connect this pin directly to the VOUT pin. For the UCC381-ADJ ver- sion, the output voltage can be set by two external resi- tors according to the following relationship: V R R OUT =• + 125 1 2 1 . where R1 is a resistor connected between VOUT and VOUTS and R2 is a resistor connected between VOUTS and GND. 7 6 3 2 8 5 4 1 1.0 µF R 1 NOTE 1 R 2 NOTE 1 C T NOTE 2 SHUTDOWN V IN CT VIN GND GND GND GND VOUTS VOUT OUTPUT C OUT UCC381 TYPICAL APPLICATION CIRCUIT Note 1: R1 and R2 for adjustable version only. For 3.3V and 5V versions connect VOUT to VOUTS. See Pin Descriptions. Note 2: C T timing capacitor is for adjustable version only. For 3.3V and 5V versions, the CT pin is used to enable or shutdown the part. See Pin Descriptions. UDG-98148 |
Similar Part No. - UCC281DP-ADJ |
|
Similar Description - UCC281DP-ADJ |
|
|
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 |