NCP100 Advance Information Sub 1V Precision Adjustable Shunt Regulator The NCP100 is a programmable shunt regulator that provides accurate referencing for voltage levels of 1 volt and below. This device is targeted at low voltage applications where a 1.25 volt bandgap reference is not suitable. This device exhibits wide operating currents of 0.1 to 20 mA and has sufficient current for driving opto–couplers. Additional applications include feedback isolation for secondary side regulation of power supplies. http://onsemi.com 5 1 TSOP–5 SN SUFFIX CASE 483 Features: • • • • Applications: • • • • • • • • • Laptop Computers Hand–Held Instrumentation Cellular Phones Camcorders and Cameras Secondary Regulation of Power Supplies Reliable Reference for single cell Alkaline, NiCD and NiMH Battery Applications Power Supplies Telecom/Networking Wireless/Portable Electronics PIN CONNECTIONS AND MARKING DIAGRAM NC 1 Anode 2 Cathode 3 5 Anode 4 Ref RAByw • • • Programmable Output Voltage Range of 0.9 to 6.0 V @ 25°C Internal Voltage Reference with Tolerance of ±1% Low Dynamic Output Impedance, 0.2 typical Sink Current Capability of 0.10 mA to 20 mA – Drives Optos Directly Equivalent Full–Range Temperature Coefficient of < 50 ppm/°C Operating Temperature Range of –40°C to 85°C Micro Miniature TSOP–5 Packaging – Same pinout as TLV431 but operates at lower voltage. yw = Date Code (Top View) ORDERING INFORMATION Device Package Shipping NCP100SNT1 TSOP–5 3000 Units / 7″ Reel Cathode (K) Reference (R) Anode (A) Figure 1. Representative Block Diagram This document contains information on a new product. Specifications and information herein are subject to change without notice. Semiconductor Components Industries, LLC, 2001 February, 2001 – Rev. 2 1 Publication Order Number: NCP100/D NCP100 PIN DESCRIPTION ÁÁÁÁÁ ÁÁÁÁÁÁ ÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁ ÁÁÁÁÁ ÁÁÁÁÁÁ ÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁ ÁÁÁÁÁ ÁÁÁÁÁÁ ÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁ ÁÁÁÁÁ ÁÁÁÁÁÁ ÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁ ÁÁÁÁÁ ÁÁÁÁÁÁ ÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁ ÁÁÁÁÁ ÁÁÁÁÁÁ ÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁ Pin No. Name 1 NC 2 Anode 3 Cathode (K) 4 Reference 5 Anode Description No Connect Anode – Typically Connected Directly to Ground Reference Voltage Output Input for Reference Voltage Adjustment Connection Anode – Typically Connected Directly to Ground Typical Application Circuit Rin Vin Vka R1 1µF REF R2 Eq1: Vka = 0.700 (1 + R1/R2) + Iref * R1 COMPONENT SELECTION Vka (nom) R1 R2 0.90 V 1.19 V 6.00 V 10 k 10 k 10 k 34.9 k 14.3 k 1.32 k MAXIMUM RATINGS (TA = 25°C, unless otherwise noted.) ÁÁÁÁÁÁÁÁÁÁÁÁÁÁ ÁÁÁÁ ÁÁÁÁÁ ÁÁÁ ÁÁÁÁÁÁÁÁÁÁÁÁÁÁ ÁÁÁÁ ÁÁÁÁÁ ÁÁÁ ÁÁÁÁÁÁÁÁÁÁÁÁÁÁ ÁÁÁÁ ÁÁÁÁÁ ÁÁÁ ÁÁÁÁÁÁÁÁÁÁÁÁÁÁ ÁÁÁÁ ÁÁÁÁÁ ÁÁÁ ÁÁÁÁÁÁÁÁÁÁÁÁÁÁ ÁÁÁÁ ÁÁÁÁÁ ÁÁÁ Symbol Value Cathode Voltage Vka 7.0 V Operating Cathode Current Ika 25 mA Anode–Cathode Forward Current Iak 2.0 mA Reference Current Ir 2.0 mA Storage Temperature Tstg –55 to 125 °C Thermal Resistance – Junction to Air RθJA 225 °C/W TJ 125 °C Tsolder 260 °C Rating Unit ÁÁÁÁÁÁÁÁÁÁÁÁÁÁ ÁÁÁÁ ÁÁÁÁÁ ÁÁÁ ÁÁÁÁÁÁÁÁÁÁÁÁÁÁ ÁÁÁÁ ÁÁÁÁÁ ÁÁÁ Maximum Junction Temperature Lead Temperature (Soldering), 10 seconds http://onsemi.com 2 NCP100 ELECTRICAL CHARACTERISTICS (CL = 1µF, TA = 25°C, unless otherwise noted.) ÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁ ÁÁÁÁÁ ÁÁÁÁ ÁÁÁÁ ÁÁÁÁ ÁÁÁ ÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁ ÁÁÁÁÁ ÁÁÁÁ ÁÁÁÁ ÁÁÁÁ ÁÁÁ ÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁ ÁÁÁÁÁ ÁÁÁÁ ÁÁÁÁ ÁÁÁÁ ÁÁÁ ÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁ ÁÁÁÁÁ ÁÁÁÁ ÁÁÁÁ ÁÁÁÁ ÁÁÁ ÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁ ÁÁÁÁÁ ÁÁÁÁ ÁÁÁÁ ÁÁÁÁ ÁÁÁ ÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁ ÁÁÁÁÁ ÁÁÁÁ ÁÁÁÁ ÁÁÁÁ ÁÁÁ ÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁ ÁÁÁÁÁ ÁÁÁÁ ÁÁÁÁ ÁÁÁÁ ÁÁÁ ÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁ ÁÁÁÁÁ ÁÁÁÁ ÁÁÁÁ ÁÁÁÁ ÁÁÁ ÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁ ÁÁÁÁÁ ÁÁÁÁ ÁÁÁÁ ÁÁÁÁ ÁÁÁ ÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁ ÁÁÁÁÁ ÁÁÁÁ ÁÁÁÁ ÁÁÁÁ ÁÁÁ ÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁ ÁÁÁÁÁ ÁÁÁÁ ÁÁÁÁ ÁÁÁÁ ÁÁÁ ÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁ ÁÁÁÁÁ ÁÁÁÁ ÁÁÁÁ ÁÁÁÁ ÁÁÁ ÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁ ÁÁÁÁÁ ÁÁÁÁ ÁÁÁÁ ÁÁÁÁ ÁÁÁ Characteristic Symbol Min Typ Max Operating Voltage Vop 0.9 – 6.0 V Operating Current Ika 0.1 – 20 mA 0.693 0.689 – – 0.707 0.711 – ±25 – 0.685 0.680 – – 0.707 0.711 LR1 LR2 –10 0 – – 10 10 Reference Input Current (Ika = 10 mA, Vka = 1.19 V) Iref –150 – 150 nA Cathode Current in OFF State (Vref = 0 V, Vka = 6.0 V) Ioff – 75 95 µA Dynamic Output Impedance (Ika = 1 mA to 20 mA, Vka(nom) = 0.9 V, f < 1 kHz) Zka 0 0.2 0.4 Reference Voltage (Vka(nom) = 1.19 V, Ika = 10 mA) Vref V TA = 25°C TA = –40 to 85°C Temperature Coefficient (Note 2) Reference Voltage (Vka(nom) = 0.9 V, Ika = 0.1 mA) (Figure 5) Line Regulation (Ika = 10 mA) Unit ppm/°C Vref (min) V TA = 25°C TA = –40 to 85°C Vka = 0.9 V to 1.19 V Vka = 1.19 V to 6.0 V mV 1.For Vka(nom), a resistor divider is used, refer to the component selection table. 2.The average temperature coefficient of the reference input voltage, αVref is defined as: ppm V ref C V V ref ref @ 25C T X 106 A x 10 6 ref T (V @ 25C) A ref V V KA 3.The dynamic impedance ZKA is defined as |Z KA| I K With two external resistors, R1 and R2, (refer to Figure 1) the total dynamic impedance of the circuit is given by: |Z | |Z | KA KA 1 R1 R2 TYPICAL APPLICATIONS Rin Vin Vin Vout Rin Vout R1 R1 CL R2 R2 V out 1 R1 Vref R2 V out Figure 2. Shunt Regulator 1 R1 Vref R2 Figure 3. High Current Shunt Regulator Vin Vout R1 R2 V out 1 R1 Vref R2 V out min 0.9 V V be Figure 4. Low Dropout Series Pass Regulator http://onsemi.com 3 0.707 0.706 0.705 0.704 0.703 0.702 0.701 0.700 0.699 0.698 0.697 0.696 0.695 0.694 0.693 -45 -35 -25 -15 -5 Vka = 6.0 V Vref (V) Vref (V) NCP100 Vka = 0.9 V 5 15 25 35 45 55 65 75 85 0.707 0.706 0.705 0.704 0.703 0.702 0.701 0.700 0.699 0.698 0.697 0.696 0.695 0.694 0.693 0.692 0.691 0.690 0.689 0.688 0.687 T = 25°C T = 70°C T = 100°C 50 75 100 125 150 175 200 225 250 275 300 325 350 375 400 425 450 Temperature (°C) Ika (µA) T = 100°C T = 70°C T = 25°C T = 0°C T = –40°C Figure 6. Minimum Ika versus Temperature Vka = 0.9 V (nom) Vref (V) Vref (V) Figure 5. Vref over Temperature for Vka of 0.9 V and 6.0 V, Ika = 10 mA 0.707 0.706 0.705 0.704 0.703 0.702 0.701 0.700 0.699 0.698 0.697 0.696 0.695 0.694 0.693 0.692 0.691 0.690 0.689 0.688 0.687 T = –40°C T = 0°C 50 75 100 125 150 175 200 225 250 275 300 325 350 375 400 425 450 0.714 0.712 0.710 0.708 0.706 0.704 0.702 0.700 0.698 0.696 0.694 0.692 0.690 0.688 0.686 0.7 T = 100°C T = 70°C T = 25°C T = 0°C T = –40°C 1.1 Ika (µA) 1.5 1.9 2.3 2.7 3.1 3.5 3.9 4.3 4.7 5.1 5.5 6.1 Vka (V) Figure 7. Minimum Ika versus Temperature Vka = 6.0 V (nom) Figure 8. Vref versus Vka over Temperature Ika = 10 mA http://onsemi.com 4 NCP100 150 100 50 Vka = 1.2 V ∆Vka(mV) 0 –50 Ika = 10 mA Ika = 1 mA Ta = 25°C CL = 1 µF 50 100 150 200 250 300 Time (µsec) 350 400 450 500 Figure 9. Transient Response of Vka to a Ika Step 1500 1200 Ika = 10 mA 1000 V ka (mV) 750 Ika = 0.1 mA 500 250 2.0 V 0 Vin Ta = 25°C CL = 1 µF 0V 0 200 400 600 800 1000 1200 1400 1600 1800 2000 Time (µsec) Figure 10. Turn–ON Time with Vka = 1.2 V http://onsemi.com 5 NCP100 APPLICATIONS INFORMATION The NCP100 is a precision adjustable shut regulator similar to the industry standard 431–type shunt reference. The device has been designed using a CMOS process. Each device is laser trimmed during wafer probe to achieve very tight reference accuracy and low reference temperature shift. The nominal value of the reference is 0.700 V. This lower voltage allows the device to be used in very low voltage applications where a traditional 1.25 V reference is not suitable. The device requires a minimum cathode to anode voltage of 0.9 V for proper operation. The typical configuration for this device is illustrated in Figure 1. The equation below can be used in calculating Vka: V ka 0.700 (1 R1R2) I ref * R1 The NCP100 requires an output capacitor between the cathode and the anode. The minimum value for this component is 1 µF. Since some types of capacitors have a wide tolerance on the value and in some cases a significant temperature co–efficient, it is important to ensure that this capacitor is 1 µF under all operating conditions. In addition to calculating the values or R1 and R2, the input resistance, Rin must also set for proper operation. This is determined by calculating the current going into the minimum operating current Ika plus the current through the R1/R2 resistor divider. In addition, the maximum current into the load must be determined. The sum of these three currents determines the current through Rin. This is reflected in equation 2: (1) R Because the error amplifier is a CMOS design the value of Iref is extremely low so the error induced by this current can be neglected for most applications. Also because of the low Iref current, the R1 and R2 resistors can be higher impedance to minimize power dissipation. in (V in V )(I I I ) ka ka load R1R2 (2) This value then should be reviewed to make sure that under worst case conditions, the minimum and maximum Ika values are within specification. http://onsemi.com 6 NCP100 INFORMATION FOR USING THE TSOP–5 SURFACE MOUNT PACKAGE MINIMUM RECOMMENDED FOOTPRINT FOR SURFACE MOUNTED APPLICATIONS Surface mount board layout is a critical portion of the total design. The footprint for the semiconductor packages must be the correct size to insure proper solder connection interface between the board and the package. With the correct pad geometry, the packages will self align when subjected to a solder reflow process. 0.094 2.4 0.037 0.95 0.074 1.9 0.037 0.95 0.028 0.7 0.039 1.0 inches mm TSOP–5 (TSOP–5 is footprint compatible with SOT23–5) http://onsemi.com 7 NCP100 PACKAGE DIMENSIONS TSOP–5 SN SUFFIX PLASTIC PACKAGE CASE 483–01 ISSUE A NOTES: 1. DIMENSIONING AND TOLERANCING PER ANSI Y14.5M, 1982. 2. CONTROLLING DIMENSION: MILLIMETER. 3. MAXIMUM LEAD THICKNESS INCLUDES LEAD FINISH THICKNESS. MINIMUM LEAD THICKNESS IS THE MINIMUM THICKNESS OF BASE MATERIAL. D S 5 4 1 2 3 B L G A J C 0.05 (0.002) H M K DIM A B C D G H J K L M S MILLIMETERS MIN MAX 2.90 3.10 1.30 1.70 0.90 1.10 0.25 0.50 0.85 1.00 0.013 0.100 0.10 0.26 0.20 0.60 1.25 1.55 0 10 2.50 3.00 INCHES MIN MAX 0.1142 0.1220 0.0512 0.0669 0.0354 0.0433 0.0098 0.0197 0.0335 0.0413 0.0005 0.0040 0.0040 0.0102 0.0079 0.0236 0.0493 0.0610 0 10 0.0985 0.1181 ON Semiconductor and are trademarks of Semiconductor Components Industries, LLC (SCILLC). SCILLC reserves the right to make changes without further notice to any products herein. SCILLC makes no warranty, representation or guarantee regarding the suitability of its products for any particular purpose, nor does SCILLC assume any liability arising out of the application or use of any product or circuit, and specifically disclaims any and all liability, including without limitation special, consequential or incidental damages. “Typical” parameters which may be provided in SCILLC data sheets and/or specifications can and do vary in different applications and actual performance may vary over time. All operating parameters, including “Typicals” must be validated for each customer application by customer’s technical experts. SCILLC does not convey any license under its patent rights nor the rights of others. SCILLC products are not designed, intended, or authorized for use as components in systems intended for surgical implant into the body, or other applications intended to support or sustain life, or for any other application in which the failure of the SCILLC product could create a situation where personal injury or death may occur. Should Buyer purchase or use SCILLC products for any such unintended or unauthorized application, Buyer shall indemnify and hold SCILLC and its officers, employees, subsidiaries, affiliates, and distributors harmless against all claims, costs, damages, and expenses, and reasonable attorney fees arising out of, directly or indirectly, any claim of personal injury or death associated with such unintended or unauthorized use, even if such claim alleges that SCILLC was negligent regarding the design or manufacture of the part. SCILLC is an Equal Opportunity/Affirmative Action Employer. PUBLICATION ORDERING INFORMATION NORTH AMERICA Literature Fulfillment: Literature Distribution Center for ON Semiconductor P.O. Box 5163, Denver, Colorado 80217 USA Phone: 303–675–2175 or 800–344–3860 Toll Free USA/Canada Fax: 303–675–2176 or 800–344–3867 Toll Free USA/Canada Email: [email protected] Fax Response Line: 303–675–2167 or 800–344–3810 Toll Free USA/Canada N. American Technical Support: 800–282–9855 Toll Free USA/Canada CENTRAL/SOUTH AMERICA: Spanish Phone: 303–308–7143 (Mon–Fri 8:00am to 5:00pm MST) Email: ONlit–[email protected] ASIA/PACIFIC: LDC for ON Semiconductor – Asia Support Phone: 303–675–2121 (Tue–Fri 9:00am to 1:00pm, Hong Kong Time) Toll Free from Hong Kong & Singapore: 001–800–4422–3781 Email: ONlit–[email protected] JAPAN: ON Semiconductor, Japan Customer Focus Center 4–32–1 Nishi–Gotanda, Shinagawa–ku, Tokyo, Japan 141–0031 Phone: 81–3–5740–2745 Email: [email protected] EUROPE: LDC for ON Semiconductor – European Support German Phone: (+1) 303–308–7140 (Mon–Fri 2:30pm to 7:00pm CET) Email: ONlit–[email protected] French Phone: (+1) 303–308–7141 (Mon–Fri 2:00pm to 7:00pm CET) Email: ONlit–[email protected] English Phone: (+1) 303–308–7142 (Mon–Fri 12:00pm to 5:00pm GMT) Email: [email protected] ON Semiconductor Website: http://onsemi.com EUROPEAN TOLL–FREE ACCESS*: 00–800–4422–3781 *Available from Germany, France, Italy, England, Ireland For additional information, please contact your local Sales Representative. http://onsemi.com 8 NCP100/D