R1112N/R1122N Series Low Noise 150mA LDO The R1112N/R1122N Series are CMOS-based LDO regulators featuring 150mA output. High ripple rejection and excellent load transient response of the series make the product ideally suited for use in power source for hand-held communication equipment. The polarity of the CE pin can be selected. Two different pin layout as R1112N and R1122N are available. Ceramic capacitors can be used. FEATURES * Supply Current (ISS) ************************Typ. 100A (VIN=SET VOUT+1V) * Standby Current (Istandby) *****************Typ. 0.1A (Same as above, in standby) * Dropout Voltage (VDIF) ********************Typ. 0.19V (IOUT=100mA, VOUT=2.8V) * Ripple Rejection (RR)*********************Typ. 80dB (f=1kHz) * Input Voltage Range (VIN) ***************2.0V to 6.0V * Output Voltage Range (VOUT)**********1.5V to 5.0V (internally fixed) * Output Voltage Accuracy **************** 2% * Temp. coeff. of Output Voltage ************ Typ. 100ppm/C * Line Regulation************************************ Typ. 0.05%/V * Fold-back Protection Circuit***************** Current limit Typ. 30mA * Package*********************************************** SOT-23-5 * Replaceable with LP2980 or LP2985. (R1112N) * Replaceable with TK111, TK112 or TK113. (R1122N) * Ceramic capacitors can be used. ******** 2.2F or more BLOCK DIAGRAMS R1112Nxx1A R1122Nxx1A R1112Nxx1B R1122Nxx1B ( CE pin "L" active) (CE pin "H" active) VOUT VDD VOUT VDD Vref Vref Current Limit CE Current Limit GND CE GND SELECTION GUIDE Package Quantity per Reel SOT-23-5 3,000 pcs Part No. R1112N.xx.1. -TR-F R1122N.xx.1. -TR-F .xx. : Specify the output voltage within the range 1.5V (.15.) to 5.0V (.50.) in 0.1V steps. . : Select the polarity of the CE pin from (.A.) "L" active or (.B.) "H" active. PACKAGE (Top View) TYPICAL CHARACTERISTIC R1112N301B R1122N301B SOT-23-5 5 4 1 2 3 R1112N 1 2 3 4 5 VDD GND CE or CE NC VOUT R1122N 1 2 3 4 5 VOUT GND VDD CE or CE NC Dropout Voltage VDIF(V) 0.40 Dropout Voltage vs. Output Current 85C 25C -40C 0.35 0.30 0.25 0.20 0.15 0.10 0.05 0 0 50 100 150 Output Current IOUT(mA) APPLICATIONS * Power source for hand-held communication equipment, cameras, and VCRs * Power source for home appliances No.EK-060-091101 * Power source for battery-powered equipment CMOS LDO Regulator 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. 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