R1250V381A-E2-FB [RICOH]
Switched Capacitor Regulator, 322kHz Switching Freq-Max, CMOS, PDSO8, TSSOP-8;
| 型号： | R1250V381A-E2-FB |
| 厂家： | 
RICOH ELECTRONICS DEVICES DIVISION |
| 描述： | Switched Capacitor Regulator, 322kHz Switching Freq-Max, CMOS, PDSO8, TSSOP-8 ISM频段 光电二极管 |
| 文件： | 总14页 (文件大小：288K) |
| 中文： | 中文翻译 | 下载： | 下载PDF数据表文档文件 |
Negative Output Charge Pump Regulator
NO. EA-076-120404
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FEATURES
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APPLICATIOS
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1
R1250Vxx1A
BLOCK DIAGRAM
CP+
CP-
1
3
SW1
SW2
SW3
SW4
2
7
GND
8
VIN
RO
VOUT
OSC
RPU
4
CE
6
Vref
Vref
PIN CONFIGURATION
PACKAGE DIMESION
TSSOP8
C
P+
2
3
4
8
7
6
5
V
V
IN
GND
OUT
C
P
-
Vref
NC
CE
1
2
3
4
8
7
6
5
2
R1250Vxx1A
PIN DESCRIPTION
Pin No.
Symbol
Description
ꢁ
ꢂ
ꢋ
ꢇ
ꢃ
ꢏ
ꢊ
ꢈ
&3ꢀ
*1'
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*Note1 Vref is just a monitoring pin, therefore remain open. Do not cect any load. Refer to Techni-
cal Notes.
ABSOLUTE MAXIMUM RATINGS
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Symbol
9,1
Item
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Rating
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Unit
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*Note1: Power dissipation is specified under the specified condition.
Conditions;
Evaluation Board Dimensions: 50mm × 50mm × 1.6mm
Material: Glass Epoxy (FR-4)
Reverse side of the evaluation board: Plane Copper
Surface of the evaluation board: Land pattern and Wiring
3
R1250Vxx1A
SELECTION GUIDE
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Code
Contents
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R1250Vxx1A
ELECTRICAL CHARACTERISTICS
R1250Vxx1A
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Symbol
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Typ.
Max.
Unit
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*Note1 Refer to Test Circuit 1.
*Note2: Refer to Test Circuit 6.
*Note3: Do not connect ant load. Refer to Technical Notes.
*Use Ceramic Capacitors with low ESR. Capacitors with high ESR could have bad effect on the performance of this IC.
5
R1250Vxx1A
TYPICAL CHARACTERISTICS
1) Supply Current at no load vs. Input Voltage
2) Supply Current at no load vs. Temperature
R1250Vxx1A
R1250Vxx1A
2.500
2.5
-4.0V Output
2.0
-4.0V Output
2.000
-3.0V Output
1.500
1.5
1.0
1.000
-3.0V Output
-2.0V Output
-2.0V Output
0.500
0.5
0.0
0.000
2.5
3.0
3.5
4.0
4.5
5.0
5.5
120
5.5
-50
-25
0
25
75
100
120
100
Input Voltage VIN (V)
TempeTopt (°C)
3) Input Current vs. Output Load Current
4) Efficiency vs. Load Curent
R1250Vxx1A
R1250V301A
100
80
60
40
20
0
120
-4.0V Output
100
80
-2.0V Output
60
40
20
0
-3.0V Output
V
IN=lOutputl+1V
0
20
40
60
80
100
0
20
60
80
100
Orrent OUT (mA)
Output Load Current IOUT (mA)
5) Oscillator Frequency nput Voltage
6) Oscillator Frequency vs. Temperature
R1250V201A
R1250V201A
300
320
298
296
310
300
290
280
270
260
250
240
294
292
290
288
286
284
282
280
-50
-25
0
25
50
75
2.5
3
3.5
4
4.5
5
Temperature Topt (°C)
Input Voltage VIN (V)
6
R1250Vxx1A
7) Output Voltage vs. Output Load Current
R1250V201A
R1250V201A
-1.5
-1.6
-1.7
-1.9
85°C
50°C
25°C
-1.8
-1.9
-2
-2
V
IN=5.0V
V
IN=3.0V
25°C 50°C 85°C
-2.1
-2.2
-2.1
-2.9
0
20
40
80
100
120
0
20
40
60
80
100
120
Output LoaIOUT (mA)
Output Load Current IOUT (mA)
R1250V301A
1250V301A
-2.5
-2.6
-2.7
85°C
50°C
-2.8
-2.9
-3
25°C
-3
VIN=5.0V
25°C
50°C 85°C
V
IN=4.0V
-3.1
-3.2
-3.1
0
20
40
60
80
100
120
0
20
40
60
80
100
120
Output Load Current IOUT (mA)
Output Load CurrenIOUT (mA)
250V301A
-3.5
-3.6
-3.7
85°C
50°C
25°C
-3.8
-3.9
-4
VIN=5.0V
-4.1
-4.2
0
20
40
60
80
100
120
Output Voltage Load Current IOUT (mA)
7
R1250Vxx1A
8) Output Voltage vs. Temperature
R1250V201A
R1250V301A
-2.99
-3.00
-1.98
-1.99
-2.00
-2.01
-2.02
-3.01
-3.02
-3.03
-3.03
-3.05
-50
-25
0
25
75
100
-50
-25
0
25
50
75
100
Temperature To
Temperature Topt (°C)
R1250V401A
-3.98
-3.99
-4.00
-4.01
-4.02
-4.03
-4.04
-4.05
-4.06
-50
-25
0
25
50
5
100
Temperature Top(°C)
9) Output Voltage
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8
R1250Vxx1A
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-3.00V
100mV
1.00µs
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-3.00V
100mV
1.00µs
TEST CIRCUITS
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1) Test Circuit 1
I
SS-P
1.CP+
8.VIN
A
2.GND
7.VOUT
6.Vref
5.NC
ISS-N
3.C
P-
A
4.CE
5.5V
Set Output Voltage+0.2V
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(*) To stabilize voltage, a few µF bypass capacitors are applied to VOUT pin and VIN pin.
9
R1250Vxx1A
2) Test Circuit 2
I
SS2
1.CP+
2.GND
3.CP-
8.VIN
A
7.VOUT
6.Vref
5.NC
4.7µF
4.7µF
4.7µF
4.CE
3) Test Circuit 3
IIN
1.CP+
8.VIN
A
2.GND 7.VOUT
4.7µF
V
3.CP-
4.CE
6.Vref
5.NC
4.7µF
4.7µF
IOUT
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4) Test Circuit 4
1.CP+
8.VIN
2.GND 7.VOUT
Os
3.CP-
4.CE
6.Vref
5.NC
(*) To stabilize voltage, a few µF bypass capacitor is applied to VIN pin.
10
R1250Vxx1A
5) Test Circuit 5
I
IN
1.CP+
8.VIN
A
2.GND 7.VOUT
4.7µF
3.CP-
4.CE
6.Vref
5.NC
5.0V
4.7µF
4.7µF
I
OUT
Oscilloscope
B0MHz
6) Test Circuit 6
1.CP+
8.VIN
A
2.GND 7.VOUT
3.CP-
4.CE
6.Vref
5.NC
7.5V
TYPICAL APPLICATION
CIN
4.7µF
CP+
VIN
Output
C
P
GND
VOUT
4.7µF
C
P-
Vref
NC
Open
C
OUT
4.7µF
CE
(*) Vref pin should not be wired. Refer to Technical Notes.
11
R1250Vxx1A
OPERATION
1) Basic Operation
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2) Status of Internal Circuits at Standby mode and Standby Current
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ROUT
COUT
VIN
CIN
CP
RO
up to 5Ω
VOUT
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3) Ripple Voltage
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12
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4) Power Consumption
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TECHNICAL NOTES
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13
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 eipment,
measuring instruments, consumer electronic products, amusement equipm.). Those
customers intending to use a product in an application requiring extrequality and reliability,
for example, in a highly specific application where the failure or misoeration of the product
could result in human injury or death (aircraft, spacevehicle, nucleareactor control system,
traffic control system, automotive and transportation equipment, combustion equipment, safety
devices, life support system etc.) should first contact u.
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 dssume any liability or responsibility for any loss or
damage arising from misuse or inapriate use of the products.
7.Anti-radiation design is not mplemented 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 MPANY,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.
Ricoh completed the organization of the Lead-free production for all of our products.
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
● Higashi-Shinagawa Office (International Sales)
3-32-3, Higashi-Shinagawa, Shinagawa-ku, Tokyo 140-8655, Japan
Phone: +81-3-5479-2857 Fax: +81-3-5479-0502
RICOH EUROPE (NETHERLANDS) B.V.
● Semiconductor Support Centre
Prof. W.H.Keesomlaan 1, 1183 DL Amstelveen, The Netherlands
P.O.Box 114, 1180 AC Amstelveen
Phone: +31-20-5474-309 Fax: +31-20-5474-791
RICOH ELECTRONIC DEVICES KOREA Co., Ltd.
11 floor, Haesung 1 building, 942, Daechidong, Gangnamgu, Seoul, Korea
Phone: +82-2-2135-5700 Fax: +82-2-2135-5705
RICOH ELECTRONIC DEVICES SHANGHAI Co., Ltd.
Room403, No.2 Building, 690#Bi Bo Road, Pu Dong New district, Shanghai 201203,
People's Republic of China
Phone: +86-21-5027-3200 Fax: +86-21-5027-3299
RICOH COMPANY, LTD.
Electronic Devices Company
● Taipei office
Room109, 10F-1, No.51, Hengyang Rd., Taipei City, Taiwan (R.O.C.)
Phone: +886-2-2313-1621/1622 Fax: +886-2-2313-1623
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