參數(shù)資料
型號(hào)： R1211D103A
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?。?/td> 385K
代理商： R1211D103A
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
R1211D103C STEP-UP DC/DC CONTROLLER
R1211D104A STEP-UP DC/DC CONTROLLER
R1211N002B STEP-UP DC/DC CONTROLLER
R1215D002A STEP-UP DC/DC CONTOLLER
R1215D002B STEP-UP DC/DC CONTOLLER
相關(guān)代理商/技術(shù)參數(shù)
參數(shù)描述
R1211D103C 制造商:RICOH 制造商全稱:RICOH electronics devices division 功能描述:STEP-UP DC/DC CONTROLLER
R1211D104A 制造商:RICOH 制造商全稱:RICOH electronics devices division 功能描述:STEP-UP DC/DC CONTROLLER
R12-11D5-12 制造商:NTE Electronics 功能描述:POWER RELAY DPDT 12VDC 5A PLUG IN 制造商:NTE Electronics 功能描述:General Purpose Relay 制造商:NTE Electronics 功能描述:POWER RELAY, DPDT, 12VDC, 5A, PLUG IN; Relay Type:General Purpose; Coil Voltage VDC Nom:12V; Contact Current Max:5A; Contact Voltage AC Nom:240V; Contact Voltage DC Nom:28V; Coil Resistance:160ohm; Contact Configuration:DPDT ;RoHS Compliant: Yes
R12-11D5-24 制造商:NTE Electronics 功能描述:POWER RELAY DPDT 24VDC 5A PLUG IN 制造商:NTE Electronics 功能描述:POWER RELAY, DPDT, 24VDC, 5A, PLUG IN 制造商:NTE Electronics 功能描述:RELAY-5AMP-DC-24V 制造商:NTE Electronics 功能描述:POWER RELAY, DPDT, 24VDC, 5A, PLUG IN; Relay Type:General Purpose; Coil Voltage VDC Nom:24V; Contact Current Max:5A; Contact Voltage AC Nom:240V; Contact Voltage DC Nom:28V; Coil Resistance:650ohm; Contact Configuration:DPDT ;RoHS Compliant: Yes
R1211N002A 制造商:RICOH 制造商全稱:RICOH electronics devices division 功能描述:Step-up DC/DC Controller
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