參數(shù)資料
型號(hào)： R1211N002B
廠商： Ricoh Co., Ltd.
英文描述： STEP-UP DC/DC CONTROLLER
中文描述： 升壓型DC / DC控制器
文件頁(yè)數(shù)： 12/40頁(yè)
文件大小： 385K
代理商： R1211N002B
R1211x
TIMING CHART
R1211x002A/R1211x002C
12
R1
R2
V
OUT
V
FB
+
-
V
REF
AMPOUT
-
+
SS
DTC
EXT
PWM Comparator
EXT
OP AMP
R1211x002B/R1211x002D
R1
R2
V
OUT
V
FB
+
-
V
REF
AMPOUT
-
+
SS
DTC
EXT
PWM Comparator
EXT
OP AMP
<Soft-start Operation>
Soft-start operation is starting from power-on as follows:
(Step1)
The voltage level of SS is rising gradually by constant current circuit of the IC and a capacitor. V
REF
level which
is input to OP AMP is also gradually rising. V
OUT
is rising up to input voltage level just after the power-on,
therefore, V
FB
voltage is rising up to the setting voltage with input voltage and the ration of R1 and R2. AMPOUT
is at "L", and switching does not start.
(Step2)
When the voltage level of SS becomes the setting voltage with the ration of R1 and R2 or more, switching
operation starts. V
REF
level gradually increases together with SS level. V
OUT
is also rising with balancing V
REF
and
V
FB
. Duty cycle depends on the lowest level among AMPOUT, SS, and DTC of the 4 input terminals in the PWM
comparator.
相關(guān)PDF資料
PDF描述
R1215D002A STEP-UP DC/DC CONTOLLER
R1215D002B STEP-UP DC/DC CONTOLLER
R1215D002E STEP-UP DC/DC CONTOLLER
R1215D002F STEP-UP DC/DC CONTOLLER
R1218N042A Step-up DC/DC converter for White LED Backlight
相關(guān)代理商/技術(shù)參數(shù)
參數(shù)描述
R1211N002B-TR 制造商:未知廠家 制造商全稱(chēng):未知廠家 功能描述:Analog IC
R1211N002C 制造商:RICOH 制造商全稱(chēng):RICOH electronics devices division 功能描述:STEP-UP DC/DC CONTROLLER
R1211N002C-TR 制造商:RICOH 制造商全稱(chēng):RICOH electronics devices division 功能描述:Step-up DC/DC Controller
R1211N002D 制造商:RICOH 制造商全稱(chēng):RICOH electronics devices division 功能描述:STEP-UP DC/DC CONTROLLER
R1211N002D-TR 制造商:RICOH 制造商全稱(chēng):RICOH electronics devices division 功能描述:Step-up DC/DC Controller
發(fā)布緊急采購(gòu)，3分鐘左右您將得到回復(fù)。

采購(gòu)需求

(若只采購(gòu)一條型號(hào)，填寫(xiě)一行即可)

發(fā)布成功！您可以繼續(xù)發(fā)布采購(gòu)。也可以進(jìn)入我的后臺(tái)，查看報(bào)價(jià)

發(fā)布成功！您可以繼續(xù)發(fā)布采購(gòu)。也可以進(jìn)入我的后臺(tái)，查看報(bào)價(jià)

*型號(hào) *數(shù)量 廠商 批號(hào) 封裝
添加更多采購(gòu)

我的聯(lián)系方式

*
*
*