R1210N302C RICOH electronics devices division, R1210N302C Datasheet - Page 3

• Manufacturer Part Number: R1210N302C
• Description: SOT23-5 PWM Step-up DC/DC Converter
• Manufacturer: RICOH electronics devices division

2
BLOCK DIAGRAM
SELECTION GUIDE
,&V#FDQ#EH#VHOHFWHG#DW#WKH#XVHU·V#UHTXHVW1
R1210N××2×
,Q#WKH#545431#6HULHV/#WKH#RXWSXW#YROWDJH/#WKH#RVFLOODWRU#IUHTXHQF\/#WKH#RSWLRQDO#IXQFWLRQ/#DQG#WKH#WDSLQJ#W\SH#IRU#WKH
7KH#VHOHFWLRQ#FDQ#EH#PDGH#E\#GHVLJQDWLQJ#WKH#SDUW#QXPEHU#DV#VKRZQ#EHORZ>
Code
D
E
F
G
545431;;;;0;;
L
EXT
X
D E F G
6HWWLQJ#2XWSXW#9ROWDJH+9
6WHSZLVH#VHWWLQJ#ZLWK#D#VWHS#RI#3149#LQ#WKH#UDQJH#RI#5159#WR#9139
'HVLJQDWLRQ#RI#'ULYHU
5=#([WHUQDO#7U1#'ULYHU
'HVLJQDWLRQ#RI#2VFLOODWRU#)UHTXHQF\
&=#433N+]
'=#4;3N+]
'HVLJQDWLRQ#RI#7DSLQJ#7\SH>
([1=#75/#7/#+UHIHU#WR#7DSLQJ#6SHFLILFDWLRQ,
´75µ#LV#SUHVFULEHG#DV#D#VWDQGDUG1
5
5
V
Buffer
PWM/Controller
Chip Enable
LX
OSC
Iimiter
1
CE
287
,=
Phase Comp.
Contents
+
+
+
-
-
-
Vref Circuit
2
4
GND
V
OUT