Electronic Components Datasheet Search |
|
BM2P014 Datasheet(PDF) 7 Page - Rohm |
|
BM2P014 Datasheet(HTML) 7 Page - Rohm |
7 / 19 page 7/16 Datasheet Datasheet BM2PXX4 Series TSZ02201-0F2F0A200070-1-2 28.NOV.2012.Rev.003 © 2012 ROHM Co., Ltd. All rights reserved. www.rohm.com TSZ22111・15・001 (2 ) Start sequences (Soft start operation, light load operation, and auto recovery operation during overload protection) Start sequences are shown in Figure 7. See the sections below for detailed descriptions. Vout Switching VH VCC(1pin) FB(8pin) Soft Start Within 32ms Iout Normal Load Light LOAD Within 32ms VCC=8.2V Over Load Within 32ms Internal REF Pull Up Burst mode A B C D E F GH IJ K Switching stop VCC=13.5V Figure 7. Start sequences Timing Chart A : Input voltage VH is applied B : This IC starts operating VCC pin voltage rises when VCC > V UVLO1 (13.5 V typ). Switching function starts when other protection functions are judged as normal. Between the secondary output voltage become constant level, because the VCC pin consumption current causes the VCC value to drop, IC should set to start switching until VCC<V UVLO2 (8.2V typ). C : With the soft start function, overcurrent limit value is restricted to prevent any excessive rise in voltage or current. D : When the switching operation starts, VOUT rises. Once the output voltage starts, set the rated voltage within the T FOLP period (32ms typ). E : When there is a light load it reaches FB voltage < VBST (= 0.4Vtyp, burst operation is used to keep power consumption down. During burst operation, it becomes low-power consumption mode. F : When the FB Voltage>V FOLP1A(=2.8V.typ), it becomes a overload G: When FB pin voltage keeps V FOLP1A (= 2.8V typ) at or above T FOLP (32ms typ), the overload protection function is triggered and switching stops. During the TFOLP period (32ms typ) if the FB pin voltage becomes FB<VFOLP1B even once, the IC’s internal timer is reset. H : If the VCC voltage drops to VCC < V UVLO2 (7.7Vtyp) or below, restart is executed. I : The IC’s circuit current is reduced and the VCC pin value rises. (Same as B) J : Same as F K : Same as G |
Similar Part No. - BM2P014 |
|
Similar Description - BM2P014 |
|
|
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 |