R1210N562D-TR-FE [RICOH]
Switching Controller, Voltage-mode, 0.04A, 216kHz Switching Freq-Max, CMOS, PDSO5, HALOGEN FREE AND ROHS COMPLIANT, SOT-23, 5 PIN;
| 型号： | R1210N562D-TR-FE |
| 厂家： | 
RICOH ELECTRONICS DEVICES DIVISION |
| 描述： | Switching Controller, Voltage-mode, 0.04A, 216kHz Switching Freq-Max, CMOS, PDSO5, HALOGEN FREE AND ROHS COMPLIANT, SOT-23, 5 PIN 开关 光电二极管 |
| 文件： | 总2页 (文件大小：163K) |
| 中文： | 中文翻译 | 下载： | 下载PDF数据表文档文件 |
R1210N Series
8V Input PWM Step-up DC/DC Converter
The R1210N Series are low supply current, CMOS-based PWM step-up DC/DC converters. By simply using an inductor, a diode, and a
capacitor as external components, a high-efficiency step-up DC/DC converter can be easily configured. The xx1 version with an
internal output transistor and the xx2 version with an external transistor are available. The oscillator frequency can be selected from
100kHz or 180kHz. The xx1A version is also available, which contains a basic frequency changeover circuit that switches the
oscillator frequency from 100kHz to 35kHz when output load is reduced. R1210N also has a function that detects drastic changes in
output voltage and reduces the amount of overshoot/undershoot by switching control mode.
FEATURES
• Supply Current (IDD1)··············Typ. 35
μ
A (R1210N301, 100kHz), Typ. 60
A (R1210N302, 100kHz), Typ. 25
μ
μ
A (R1210N301, 180kHz)
A (R1210N302, 180kHz)
• Oscillator Frequency (fosc) ·············· 100kHz (xx1A/xx1C/xx2C Version),
(VOUT=SET VOUT × 0.96)
Typ. 20
μ
180kHz (xx1D/xx2D Version)
• Supply Current (IDD2)··············Typ. 10μA (VOUT=SET VOUT+0.5V, 100kHz)
•
•
Basic Frequency Change-over Circuit ···· 100kHz → 35kHz
(only xx1A Version)
Oscillator Maximum Duty Cycle (Maxduty)····· Typ. 85%
Typ. 15μA (Same as the above, 180kHz)
• Standby Current (Istandby) ········Max. 0.5μA (In standby)
• Input Voltage Range (VIN)······Max. 8.0V
• Efficiency········································ Typ. 88% (R1210N301,
• Start-up Voltage (Vstart)···········Max. 0.9V (xx1 Version), 0.8V(xx2 Version)
VIN=1.8V, IOUT=10mA)
•
Output Voltage Range (VOUT
• Output Voltage Accuracy ·······± 2.5%
)
···2.2V to 6.0V (internally fixed) (2.2V to 3.5V for xx1A)
• Package········································· SOT-23-5
BLOCK DIAGRAMS
R1210Nxx1x
R1210Nxx2x
(Internal output transistor type)
(External transistor type)
Vref
Vref
2
V
OUT
2
VOUT
Phase Comp.
Phase Comp.
EXT
5
Buffer
L
X
5
VLX limiter
-
PWM Controller
OSC
Buffer
+
PWM Controller
OSC
-
+
fosc Control
-
+
Chip Enable
4
GND
4
GND
Chip Enable
1
1
CE
CE
SELECTION GUIDE
TYPICAL APPLICATIONS
R1210Nxx1x
SD
R1210Nxx2x
Halogen Free Package Q'ty per Reel
Part No.
SD
SOT-23-5 3,000 pcs R1210N
.
xx∗$-TR-FE
Cb
.
xx
.
: Specify the output voltage within the range of
L
L
5
4
2
1
Tr
EXT
VOUT
5
4
2
1
2.2V (
.
22
.
) to 6.0V (
.
60
.
) in 0.1V steps.
L
X
V
OUT
CL
C
L
Rb
(up to 3.5V (
.
35
.
) for xx1A)
VIN
V
IN
.
.
: Select from (
.
1
.
) internal output transistor type or
∗
GND CE
GND CE
(.
2
.
) external transistor type.
$ : Select from (
.
A
.
) oscillator frequency 100kHz, built-in
.
.
basic frequency change-over circuit, (
.
C
.
) 100kHz or
L : 100μH, SD : MA721, CL : 22μF×2
L : 27μH, SD : RB491D, Tr : 2SD1628G,
CL : 47μF×2, Rb : 300Ω, Cb : 0.01μF
(
.
D
.
) 180kHz.
(R1210Nxx2A-TR-F is not available.)
PACKAGE (Top View)
TYPICAL CHARACTERISTICS
R1210N301C
Efficiency vs. Output Current
R1210N302C
Efficiency vs. Output Current
SOT-23-5
5
4
L:27μH
L:100μH
100
100
80
60
40
80
60
40
1
2
3
1
2
3
4
5
CE
VOUT
NC
GND
LX or EXT
V
V
V
V
IN=2.5V
IN=2.0V
IN=1.5V
IN=0.9V
V
V
V
V
IN=2.5V
IN=2.0V
IN=1.5V
IN=0.9V
20
0
20
0
0
50
100 150 200 250 300
Output Current IOUT (mA)
0
200
400
600
800
Output Current IOUT (mA)
APPLICATIONS
• Power source for battery-powered equipment
• Power source for hand-held communication equipment, cameras, and VCRs
• Power source for equipment that requires the voltage greater than the battery voltage
No.EK-067-111001
Step-up DC/DC Converter
1.The products and the product specifications described in this document are subject to change or
discontinuation of production without notice for reasons such as improvement. Therefore, before
deciding to use the products, please refer to Ricoh sales representatives for the latest
information thereon.
2.The materials in this document may not be copied or otherwise reproduced in whole or in part
without prior written consent of Ricoh.
3.Please be sure to take any necessary formalities under relevant laws or regulations before
exporting or otherwise taking out of your country the products or the technical information
described herein.
4.The technical information described in this document shows typical characteristics of and
example application circuits for the products. The release of such information is not to be
construed as a warranty of or a grant of license under Ricoh's or any third party's intellectual
property rights or any other rights.
5.The products listed in this document are intended and designed for use as general electronic
components in standard applications (office equipment, telecommunication equipment,
measuring instruments, consumer electronic products, amusement equipment etc.). Those
customers intending to use a product in an application requiring extreme quality and reliability,
for example, in a highly specific application where the failure or misoperation of the product
could result in human injury or death (aircraft, spacevehicle, nuclear reactor control system,
traffic control system, automotive and transportation equipment, combustion equipment, safety
devices, life support system etc.) should first contact us.
6.We are making our continuous effort to improve the quality and reliability of our products, but
semiconductor products are likely to fail with certain probability. In order to prevent any injury to
persons or damages to property resulting from such failure, customers should be careful enough
to incorporate safety measures in their design, such as redundancy feature, firecontainment
feature and fail-safe feature. We do not assume any liability or responsibility for any loss or
damage arising from misuse or inappropriate use of the products.
7.Anti-radiation design is not implemented in the products described in this document.
8.Please contact Ricoh sales representatives should you have any questions or comments
concerning the products or the technical information.
RICOH COMPANY., LTD. Electronic Devices Company
■Ricoh awarded ISO 14001 certification.
■
Ricoh presented with the Japan Management Quality Award for 1999.
The Ricoh Group was awarded ISO 14001 certification, which is an international standard for
environmental management systems, at both its domestic and overseas production facilities.
Our current aim is to obtain ISO 14001 certification for all of our business offices.
Ricoh continually strives to promote customer satisfaction, and shares the achievements
of its management quality improvement program with people and society.
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After Apr. 1, 2006, we will ship out the lead free products only. Thus, all products that
will be shipped from now on comply with RoHS Directive.
http://www.ricoh.com/LSI/
RICOH COMPANY, LTD.
Electronic Devices Company
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3-32-3, Higashi-Shinagawa, Shinagawa-ku, Tokyo 140-8655, Japan
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