Electronic Components Datasheet Search |
|
5962F0252401VXA Datasheet(PDF) 8 Page - STMicroelectronics |
|
5962F0252401VXA Datasheet(HTML) 8 Page - STMicroelectronics |
8 / 20 page Device description RHFL4913A 8/20 Doc ID 10005 Rev 11 5 Device description The RHFL4913A adjustable voltage regulator contains a PNP type power element controlled by a signal resulting from an amplified comparison between the internal temperature-compensated band-gap and the fraction of the desired output voltage value obtained from an external resistor divider bridge. The device is protected by several functional blocks. 5.1 ADJ pin The load output voltage feedback comes from an external resistor divider bridge mid-point connected to the ADJ pin (allowing all possible output voltage settings as per user requirements) established between load terminals. 5.2 Inhibit ON-OFF control By setting the INHIBIT pin TTL high, the device switches off the output current and voltage. The device is ON when the INHIBIT pin is set low. Since the INHIBIT pin is pulled down internally, it can be left floating in cases where the inhibit function is not used. 5.3 Overtemperature protection A temperature detector internally monitors the power element junction temperature. The device turns off when a temperature of approximately 175 °C is reached, returning to ON mode when back to approximately 135 °C. Combined with the other protection blocks, the device is protected from destructive junction temperature excursions in all load conditions. It should be noted that when the internal temperature detector reaches 175 °C, the active power element can be as high as 225 °C. Prolonged operation under these conditions far exceeds the maximum operating ratings and device reliability cannot be guaranteed. 5.4 Overcurrent protection An internal non fold-back short circuit limitation is set with ISHORT > 3.8 A (VO is 0 V). This value can be decreased via an external resistor connected between the ISC and VI pins, with a typical value range of 10 k Ω to 200 kΩ. To maintain optimal VO regulation, it is necessary to set ISHORT 1.6 times greater than the maximum desired application IO. When IO reaches ISHORT – 300 mA, the current limiter overrules the regulation, VO starts to drop and the OCM flag is raised. When no current limitation adjustment is required, the ISC pin must be left unbiased (as it is in 3 pin packages). 5.5 OCM pin The OCM pin goes low when the current limit becomes active, otherwise VOCM = VI. It is buffered and can sink 10 mA. The OCM pin is internally pulled up by a 5 k Ω resistor. |
Similar Part No. - 5962F0252401VXA |
|
Similar Description - 5962F0252401VXA |
|
|
Link URL |
Privacy Policy |
ALLDATASHEET.COM |
Does ALLDATASHEET help your business so far? [ DONATE ] |
About Alldatasheet | Advertisement | Datasheet Upload | 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 |