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| DATA SHEET BIPOLAR ANALOG INTEGRATED CIRCUT PC305 POSITIVE VOLTAGE STABILIZED POWER SUPPLY DESCRIPTION The PC305 is a high-performance stabilized power supply that can supply a constant voltage in a wide temperature range even if the input voltage or load voltage fluctuates, by integrating a high-gain error amplifier and a temperature-compensating constant-voltage diode on a single chip. FEATURES * Wide output voltage variable range Vo: 4.5 to 30 V, VDIF: 3 to 30 V * Excellent load stability * Good ripple rejection ratio 0.02% 0.003%/V PIN CONFIGURATION (Top View) PC305C, 305G2 Current limiter 1 Current output 2 Input 3 GND 4 8 Output 7 Compensation 6 Error detection 5 Reference voltage ORDERING INFORMATION Part Number Package 8-pin plastic DIP (7.62 mm (300)) 8-pin plastic SOP (5.72 mm (225)) PC305C PC305G2 EQUIVALENT CIRCUIT R7 2.8 k Q12 Q11 Q10 Q9 Q7 Q8 D1 R4 3 k R3 6.8 k Q18 R2 3 k Q1 Q2 C1 5 pF Q3 Q6 R6 4.4 k Q5 Q13 R8 1.86 k Q14 Q15 1 8 7 Current limiter Output Compensation 3 R10 600 2 Current output Input R9 Q16 1.32 k Q4 Q17 6 5 R5 2.2 k 4 GND Error detection Reference voltage The information in this document is subject to change without notice. Before using this document, please confirm that this is the latest version. Not all devices/types available in every country. Please check with local NEC representative for availability and additional information. Document No. G10633EJ3V0DS00 (3rd edition) Date Published December 1999 N CP(K) Printed in Japan (c) 1999 PC305 ABSOLUTE MAXIMUM RATINGS (Unless otherwise specified, TA = 25C) Parameter Input Voltage Input - Output Voltage Difference Maximum Output Current Total Loss Operating Temperature Storage Temperature Symbol VIN VDIF IO PT TA Tstg 350 Note 1 PC305C -0.3 to +40 40 50 PC305G2 Unit V V mA 440 0 to +70 -55 to +125 Note 2 mW C C Notes 1. Where TA > +55C, perform derating at TJ MAX. 125C, -5 mW/C. 2. Where TA > +25C, perform derating at TJ MAX. 125C, -4.4 mW/C. Caution If any of the parameters exceeds the absolute maximum ratings, even momentarily, the quality of the product may be impaired. The absolute maximum ratings are values that may physically damage the product(s). Be sure to use the product(s) within the ratings. ELECTRICAL SPECIFICATIONS (Unless otherwise specified, TA = 25C) Parameter Input Voltage Range Output Voltage Range Input - Output Voltage Difference Load Stability Input Stability Symbol VIN VOUT VDIF REGL REGIN 0 IO 12 mA, RSC = 18 VIN - VOUT 5 V VIN - VOUT > 5 V Ripple Rejection Ratio Temperature Stability Reference Voltage Output Noise Voltage VREF VN 10 Hz f 10 kHz, CREF = 0 F CREF = 0.1 F Long-time Stability Supply Current under No Load ICC VIN = 40 V REJ CREF = 10 F, f = 120 Hz 0C TA 70C 1.65 Condition MIN. 8.0 4.5 3.0 0.02 0.025 0.015 0.003 0.3 1.8 0.005 0.002 0.1 1.0 2.0 1.0 1.90 TYP. MAX. 40 30 30 0.05 0.06 0.03 Unit V V V % %/V %/V %/V % V % % % mA Remark RSC : Current-limiting resistor CREF : Bypass capacitor of reference voltage pin 2 Data Sheet G10633EJ3V0DS00 PC305 STANDARD CHARACTERISTIC CURVES (Unless otherwise specified, TA = 25C. Reference values) PT vs TA Characteristics 500 Load Stability (1) PC305G 0 400 PC305C Output Voltage Fluctuation (%) Total Loss PT [mW] TA = +70C -0.01 TA = 0C -0.02 300 200 TA = -20C 100 -0.03 RSC = 0 0 0 20 40 60 80 100 Operating Temperature TA [C] Load Stability (2) -0.04 0 5 10 15 Output Current IO (mA) Current-limiting Characteristics 0 100 Outout Voltage Fluctuation (%) Output Voltage Drop Ratio (%) TA = 0C -0.02 TA = 25C -0.04 TA = +70C TA = +70C TA = 0C 80 TA = 25C 60 TA = -20C 40 -0.06 -0.08 TA = -20C RSC = 13 20 RSC = 13 -0.1 0 10 20 30 40 0 0 10 20 30 40 50 Output Current IO (mA) Resistance for Setting Output Voltage R1//R2 = 2 k 3.0 Output Current IO (mA) Current-limiting Pickup Voltage Pickup Voltage Across Pins <1> and <8> (V) 3.2 0.6 0.5 R2 Resistance (k) 2.8 2.6 R1 = 1110xVOUT () 2.4 R2 2.2 0.4 0.3 2.0 5 10 20 50 0.2 0 20 40 60 80 Output Voltage (V) Operating Temperature TA (C) Data Sheet G10633EJ3V0DS00 3 PC305 Line Regulation 0.1 Output Voltage Fuctuation Ratio (%) Transient Response Time 40 VOUT = 10 V TA = 25C LINE 0 VOUT = 10 V -40 CL = 0 400 CL = 1 F LOAD RSC = 10 VIN = 5 V 0.02 Cref = 0 F 0.01 0.005 Cref = 10 F f120 Hz Output Voltage Fluctuation (mV) 0.05 RSC = 10 IFL = 20 mA INL = 1.0 mA VOUT = 10 V 0 0.002 0.001 1 2 5 10 20 50 -400 0 10 20 30 Input - Output Voltage Difference VDIF (V) Response Time ( s) APPLICATION CIRCUIT EXAMPLES 5 V-15 mA Regulator R3 13 8 1 10 V-200 mA Regulator (Drooping Characteristics) R3 1.3 0.5 W 8 1 C1 47 pF 7 C1 47 pF 7 R1 5.6 k 11.2 k VO = 5 V VO = 10 V R1 + - C2 3.3 F R2 2 6 VIN 8 V 3 5 4 C3 0.01 F 3.1 k R2 CREF 10 F VIN 13 V 3 5 4 C3 0.01 F CREF 10 F 15 V-1A Regulator (Fold-back Characteristics) R3 1.3 2 W + C4 - 1 F 2SD297 R6 R3 110 130 1 2 8 1A Constant-current Regulator VIN 2SD79 680 R4 2SD73 C1 R3 47 pF R2 68 2 k R1 1.8 2W Load VO = 15 V 7 6 C1 47 pF 2SB505 VIN 19 V C3 0.1 F 3 5 4 R5 1.2 k CREF 10 F R1 16.7 k + - C2 50 F R2 2.3 k 8 1 7 2 6 5 4 3 Caution Note the power consumption of the PC305 when the output pin is short-circuited and that of the external transistor. 4 Data Sheet G10633EJ3V0DS00 2.45 k + - C2 1 F 2SB505 2 6 PC305 PACKAGE DRAWINGS 8-PIN PLASTIC DIP (7.62mm(300)) 8 5 1 A 4 K J I P L H G F D N M C B M R NOTES 1. Each lead centerline is located within 0.25 mm of its true position (T.P.) at maximum material condition. 2. ltem "K" to center of leads when formed parallel. ITEM A B C D F G H I J K L M N P R MILLIMETERS 10.16 MAX. 1.27 MAX. 2.54 (T.P.) 0.500.10 1.4 MIN. 3.20.3 0.51 MIN. 4.31 MAX. 5.08 MAX. 7.62 (T.P.) 6.4 0.25 +0.10 -0.05 0.25 0.9 MIN. 015 P8C-100-300B,C-2 Data Sheet G10633EJ3V0DS00 5 PC305 8-PIN PLASTIC SOP (5.72 mm (225)) 8 5 detail of lead end P 1 A 4 H F G I J S B C D E NOTE Each lead centerline is located within 0.12 mm of its true position (T.P.) at maximum material condition. ITEM A B C D E F G H I J K L M N P MILLIMETERS 5.2 +0.17 -0.20 0.78 MAX. 1.27 (T.P.) 0.42 +0.08 -0.07 0.10.1 1.590.21 1.49 6.50.3 4.40.15 1.10.2 0.17 +0.08 -0.07 0.60.2 0.12 0.10 3 +7 -3 S8GM-50-225B-6 L K N S M M 6 Data Sheet G10633EJ3V0DS00 PC305 RECOMMENDED SOLDERING CONDITIONS Solder this product under the following recommended conditions. For details of the recommended soldering conditions, refer to information document Semiconductor Device Mounting Technology Manual (C10535E). For soldering methods and conditions other than those recommended, consult NEC. Surface Mount Type PC305G2: 8-pin plastic SOP (5.72 mm (225)) Soldering Method Soldering Conditions Recommended Conditions Symbol IR30-00-1 Infrared reflow Package peak temperature: 230C, Time: 30 sec max. (210C min.), Number of times: once Package peak temperature: 215C, Time: 40 sec max. (200C min.), Number of times: once Solder bath temperature: 260C max., Time: 10 sec max., Number of times: once, Preheating temperature: 120C max. (Package surface temperature) VPS VP15-00-1 Wave soldering WS60-00-1 Caution Do not use two or more soldering methods in combination (except partial heating). Through Hole type PC305C: 8-pin plastic DIP (7.62 mm (300)) Soldering Method Soldering Conditions Recommended Conditions Symbol Wave soldering Solder bath temperature: 260C max., Time: 10 sec max. Data Sheet G10633EJ3V0DS00 7 PC305 * The information in this document is subject to change without notice. Before using this document, please confirm that this is the latest version. * No part of this document may be copied or reproduced in any form or by any means without the prior written consent of NEC Corporation. NEC Corporation assumes no responsibility for any errors which may appear in this document. * NEC Corporation does not assume any liability for infringement of patents, copyrights or other intellectual property rights of third parties by or arising from use of a device described herein or any other liability arising from use of such device. No license, either express, implied or otherwise, is granted under any patents, copyrights or other intellectual property rights of NEC Corporation or others. * Descriptions of circuits, software, and other related information in this document are provided for illustrative purposes in semiconductor product operation and application examples. The incorporation of these circuits, software, and information in the design of the customer's equipment shall be done under the full responsibility of the customer. NEC Corporation assumes no responsibility for any losses incurred by the customer or third parties arising from the use of these circuits, software, and information. * While NEC Corporation has been making continuous effort to enhance the reliability of its semiconductor devices, the possibility of defects cannot be eliminated entirely. To minimize risks of damage or injury to persons or property arising from a defect in an NEC semiconductor device, customers must incorporate sufficient safety measures in its design, such as redundancy, fire-containment, and anti-failure features. * NEC devices are classified into the following three quality grades: "Standard", "Special", and "Specific". The Specific quality grade applies only to devices developed based on a customer designated "quality assurance program" for a specific application. The recommended applications of a device depend on its quality grade, as indicated below. Customers must check the quality grade of each device before using it in a particular application. Standard: Computers, office equipment, communications equipment, test and measurement equipment, audio and visual equipment, home electronic appliances, machine tools, personal electronic equipment and industrial robots Special: Transportation equipment (automobiles, trains, ships, etc.), traffic control systems, anti-disaster systems, anti-crime systems, safety equipment and medical equipment (not specifically designed for life support) Specific: Aircraft, aerospace equipment, submersible repeaters, nuclear reactor control systems, life support systems or medical equipment for life support, etc. The quality grade of NEC devices is "Standard" unless otherwise specified in NEC's Data Sheets or Data Books. If customers intend to use NEC devices for applications other than those specified for Standard quality grade, they should contact an NEC sales representative in advance. M7 98. 8 |
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