RICOH R1172x Series 1A LDO handbook
Contents
1. 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 soacevehicle nuclear reactor control system traffic control sys2. OT 89 5 HSON 6 HSOP 6J e Ceramic capacitors can be used 4 7uF or more Vout 2 1 0V BLOCK DIAGRAMS R1172xxx1A CE pin L active R1172xxx1B CE pin H active R1172xxx1D With Auto Discharge function Vout Current Limit Thermal Shutdown GND Halogen Free Part No R1172Nxx1 TR FE R1172Hxx1 T1 FE R1172Dxx1 TR FE R1172Sxx1 E2 FE PACKAGES Top View SOT 23 5 SOT 89 5 HSON 6 CE or CE GND NC VDD Vout The tab and tab suspension leads on back side are substrate level GND 1 The Vout pin and Voo pin must be wired each other when it is mounted on board xx Specify the output voltage within the range of 0 8V 08 to 5 0V 50 in 0 1V steps Select the polarity of the CE pin from A L active B H active or D H active with auto discharge function TYPICAL CHARACTERISTIC R1172x301x Dropout Voltage vs Output Current 250 200 Dropout Voltage Vpir mV 0 200 400 600 800 1000 Output Current lout mA TiN od od 07 0 BO X E e Power source for hand held communication equipment cameras and VCRs e Power source for home appliances and digital home appliances e Power source for automotive application No EK 122 101001 e Power source for laptop personal computers e Power source for battery powered equipment CMOS LDO Regulator 1 The products and the product specifications described in
3. RICOH _R1172x Series The R1172x Series are CMOS based LDO regulators featuring 1A output The CMOS process provides both high output current and low supply current The dropout voltage is significantly lower than bipolar regulators The R1172x handles low voltage with an input voltage from 1 4V and output voltage from 0 8V Accordingly the device supports highly integrated low voltage driven LSI as a rear stage of the DC DC converter The CE pin can switch the regulator into standby mode In addition to a fold back protection circuit built into conventional LDO regulators R1172x has a thermal shutdown circuit and inrush current limit circuit Ceramic capacitors can be used Supply Current Iss srt Typ 60uA Vin SET Vout 1 0V Standby Current Istandby 7 Typ 0 1uA Vin 6 0V In standby Dropout Voltage VbIF teete Typ 0 05V lour 300mA Vout 2 8V Typ 0 18V lout 1A Vout 2 8V Ripple Rejection RR Typ 70dB f 1kHz Vout lt 4 0V Typ 60dB f 1kHz Vout gt 4 0V Input Voltage Range Vn eeess 1 4V to 6 0V e Output Voltage Range Vout 0 8V to 5 0V internally fixed Output Voltage Accuracy lt tr 2 e Temp coeff of Output Voltage Typ 100ppm C Line Regulation eese Typ 0 05 V Fold back Protection Circuite Current limit Typ 250mA Inrush Current Limit Circuit esee Typ 500mA e Thermal Shutdown Circuit Stops at 150 C e Packages P A T SOT 23 5 S
4. mestic and overseas production facilities http www ri coh com LS I ED RoHS After Apr 1 2006 we will ship out the lead free products only Thus all products that Compl iant will be shipped from now on comply with RoHS Directive Ricoh completed the organization of the Lead free production for all of our products RICOH COMPANY LTD Electronic Devices Company Shin Yokohama office International Sales 3 2 3 Shin Yokohama Kohoku ku Yokohama City Kanagawa 222 8530 Japan Phone 81 45 477 1697 Fax 81 45 477 1698 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 3 1 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 201208 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
5. tem 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 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 continually strives to promote customer satisfaction and shares the achievements of its management quality improvement program with people and society Ricoh presented with the Japan Management Quality Award for 1999 z WRicoh awarded ISO 14001 certification Our current aim is to obtain ISO 14001 certification for all of our business offices The Ricoh Group was awarded ISO 14001 certification which is an international standard for environmental management systems at both its do
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