DATA SHEET BIPOLAR ANALOG INTEGRATED CIRCUT µPC305 POSITIVE VOLTAGE STABILIZED POWER SUPPLY DESCRIPTION The µPC305 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 PIN CONFIGURATION (Top View) • Wide output voltage variable range Vo: 4.5 to 30 V, VDIF: 3 to 30 V µ PC305C, 305G2 • Excellent load stability 0.02% • Good ripple rejection ratio 0.003%/V Current limiter 1 8 Output Current output 2 7 Compensation Input 3 6 Error detection GND 4 5 Reference voltage ORDERING INFORMATION Part Number Package µPC305C 8-pin plastic DIP (7.62 mm (300)) µPC305G2 8-pin plastic SOP (5.72 mm (225)) EQUIVALENT CIRCUIT R7 2.8 kΩ Q12 Q14 Q11 Q13 Q9 Q7 Q8 D1 Q6 R6 4.4 kΩ Q5 Q4 Q2 C1 5 pF R2 3 kΩ Q1 2 Current output Q16 R9 1.32 kΩ 1 Current limiter 8 Output 7 Compensation 6 Error detection 5 Reference voltage 4 GND Q17 R3 6.8 kΩ Q18 Input Q15 R8 1.86 kΩ Q10 R4 3 kΩ 3 R10 600 Ω Q3 R5 2.2 kΩ 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 © 1999 µPC305 ABSOLUTE MAXIMUM RATINGS (Unless otherwise specified, T A = 25°°C) Parameter µPC305C Symbol µPC305G2 Unit Input Voltage VIN −0.3 to +40 V Input − Output Voltage Difference VDIF 40 V Maximum Output Current IO 50 mA Note 1 Note 2 350 440 Total Loss PT mW Operating Temperature TA 0 to +70 °C Storage Temperature Tstg −55 to +125 °C Notes 1. Where TA > +55°C, perform derating at TJ MAX. 125°C, −5 mW/°C. 2. Where TA > +25°C, perform derating at TJ MAX. 125°C, −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 = 25°°C) Parameter Symbol Condition TYP. MAX. Unit Input Voltage Range VIN 8.0 40 V Output Voltage Range VOUT 4.5 30 V Input − Output Voltage Difference VDIF 3.0 30 V Load Stability REGL 0 ≤ IO ≤ 12 mA, RSC = 18 Ω 0.02 0.05 % Input Stability REGIN VIN – VOUT ≤ 5 V 0.025 0.06 %/V VIN – VOUT > 5 V 0.015 0.03 %/V CREF = 10 µF, f = 120 Hz 0.003 Ripple Rejection Ratio REJ 0°C ≤ TA ≤ 70°C Temperature Stability Reference Voltage VREF Output Noise Voltage VN 1.65 Supply Current under No Load ICC %/V 0.3 1.0 % 1.8 1.90 V 10 Hz ≤ f ≤ 10 kHz, CREF = 0 µF 0.005 % CREF = 0.1 µF 0.002 % 0.1 % Long-time Stability VIN = 40 V Remark RSC : Current-limiting resistor CREF : Bypass capacitor of reference voltage pin 2 MIN. Data Sheet G10633EJ3V0DS00 1.0 2.0 mA µPC305 STANDARD CHARACTERISTIC CURVES (Unless otherwise specified, TA = 25°°C. Reference values) PT vs TA Characteristics 500 Load Stability (1) µ PC305G Total Loss PT [mW] Output Voltage Fluctuation (%) 0 400 µ PC305C 300 200 100 0 0 20 40 60 80 −0.02 TA = −20°C −0.03 RSC = 0 Ω 0 Current-limiting Characteristics −0.02 TA = 25°C −0.04 TA = +70°C TA = −20°C RSC = 13 Ω 0 10 TA = +70°C TA = 25°C 60 TA = −20°C 40 20 RSC = 13 Ω 20 30 0 40 0 10 Resistance for Setting Output Voltage Pickup Voltage Across Pins <1> and <8> (V) R1//R2 = 2 kΩ R2 Resistance (kΩ) 2.8 2.6 R1 = 1110×VOUT (Ω) 2.4 R2 2.2 20 30 40 50 Current-limiting Pickup Voltage 3.0 10 20 Output Current IO (mA) 3.2 5 TA = 0°C 80 Output Current IO (mA) 2.0 15 Load Stability (2) 100 −0.08 10 Output Current IO (mA) TA = 0°C −0.06 5 Operating Temperature TA [°C] Output Voltage Drop Ratio (%) Outout Voltage Fluctuation (%) TA = 0°C −0.04 100 0 −0.1 TA = +70°C −0.01 50 0.6 0.5 0.4 0.3 0.2 Output Voltage (V) 0 20 40 60 80 Operating Temperature TA (°C) Data Sheet G10633EJ3V0DS00 3 µPC305 Line Regulation Transient Response Time 40 VOUT = 10 V TA = 25°C 0.05 Output Voltage Fluctuation (mV) Output Voltage Fuctuation Ratio (%) 0.1 0.02 Cref = 0 µ F 0.01 0.005 Cref = 10 µF f≤120 Hz 0.002 0.001 1 2 10 5 50 20 RSC = 10 Ω ∆VIN = 5 V LINE 0 VOUT = 10 V −40 RSC = 10 Ω IFL = 20 mA INL = 1.0 mA VOUT = 10 V CL = 0 CL = 1 µF 400 LOAD 0 −400 0 10 30 20 Response Time (µ s) Input - Output Voltage Difference VDIF (V) APPLICATION CIRCUIT EXAMPLES 10 V-200 mA Regulator (Drooping Characteristics) 8 C1 47 pF 1 7 2 R1 5.6 kΩ 6 VIN ≥ 8 V 3 5 4 C3 0.01 µ F R3 1.3 Ω 0.5 W VO = 5 V 3.1 kΩ R2 CREF 10 µ F 8 1 + − C2 1 µF 2SB505 R3 1.3 Ω 2 W + C4 − 1 µF 2SD297 R6 R3 110 Ω 130 Ω 8 2SB505 7 2 6 5 3 VIN ≥ 19 V C3 0.1 µ F R5 1.2 kΩ VO = 10 V R1 + − C2 3.3 µ F 6 3 5 4 C3 0.01 µ F R2 CREF 10 µ F 1A Constant-current Regulator VIN VO = 15 V C1 47 pF 1 7 2 VIN ≥ 13 V 15 V-1A Regulator (Fold-back Characteristics) C1 47 pF 11.2 kΩ R3 13 Ω 2.45 kΩ 5 V-15 mA Regulator 4 CREF 10 µ F R1 16.7 kΩ + − C2 50 µ F R2 2.3 kΩ 8 1 7 2 6 5 3 4 2SD79 680 Ω R4 2SD73 C1 R3 47 pF R2 68 Ω 2 kΩ R1 1.8 Ω 2W Load Caution Note the power consumption of the µPC305 when the output pin is short-circuited and that of the external transistor. 4 Data Sheet G10633EJ3V0DS00 µPC305 PACKAGE DRAWINGS 8-PIN PLASTIC DIP (7.62mm(300)) 8 5 1 4 A K J L P I C H G B M R F D N M 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 MILLIMETERS A B 10.16 MAX. 1.27 MAX. C 2.54 (T.P.) D 0.50±0.10 F 1.4 MIN. G H 3.2±0.3 0.51 MIN. I 4.31 MAX. J 5.08 MAX. K 7.62 (T.P.) L 6.4 M 0.25 +0.10 −0.05 N 0.25 P 0.9 MIN. R 0∼15° P8C-100-300B,C-2 Data Sheet G10633EJ3V0DS00 5 µPC305 8-PIN PLASTIC SOP (5.72 mm (225)) 8 5 detail of lead end P 4 1 A H F I G J S B C D M L N K S M E NOTE Each lead centerline is located within 0.12 mm of its true position (T.P.) at maximum material condition. ITEM MILLIMETERS A 5.2 +0.17 −0.20 B 0.78 MAX. C 1.27 (T.P.) D 0.42 +0.08 −0.07 E 0.1±0.1 F 1.59±0.21 G 1.49 H 6.5±0.3 I 4.4±0.15 J 1.1±0.2 K 0.17 +0.08 −0.07 L 0.6±0.2 M 0.12 N 0.10 P 3° +7° −3° S8GM-50-225B-6 6 Data Sheet G10633EJ3V0DS00 µPC305 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 µPC305G2: 8-pin plastic SOP (5.72 mm (225)) Soldering Method Soldering Conditions Recommended Conditions Symbol Infrared reflow Package peak temperature: 230°C, Time: 30 sec max. (210°C min.), Number of times: once IR30-00-1 VPS Package peak temperature: 215°C, Time: 40 sec max. (200°C min.), Number of times: once VP15-00-1 Wave soldering Solder bath temperature: 260°C max., Time: 10 sec max., Number of times: once, Preheating temperature: 120°C max. (Package surface temperature) WS60-00-1 Caution Do not use two or more soldering methods in combination (except partial heating). Through Hole type µPC305C: 8-pin plastic DIP (7.62 mm (300)) Soldering Method Wave soldering Soldering Conditions Recommended Conditions Symbol Solder bath temperature: 260°C max., Time: 10 sec max. Data Sheet G10633EJ3V0DS00 7 µPC305 • 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