RS431 Series Adjustable Precision Shunt Regulator

Transcription

1 Page No. : 1/1 RS431 Series Adjustable Precision Shunt Regulator Description RS431 Series Pin Assignment Lead Plastic SOT-23 Package Code: N Pin 1: Reference Pin 2: Cathode Pin 3: Anode The RS431 series are three-terminal adjustable regulators with guaranteed thermal stability over applicable temperature ranges. The output voltage may be set to any value between V REF (approximately 2.5 volts) and 36 volts with two external resistors. These devices have a typical dynamic output impedance of 0.2Ω. Active output circuitry provides a very sharp turn-on characteristic, making these devices excellent replacement for zener diodes in many applications. Features Programmable Precise Output Voltage from 2.5V to 36V High Stability under Capacitive Load Low Temperature Deviation: 4.5mV Typical Low Dynamic Output Resistance: 0.2Ω Typical Sink Current Capacity from 1mA to 100 ma Low Output Noise Wide Operating Range of -40 to 125 o C Low Equivalent Full-range Temperature Coefficient with 20PPM/ o C Typical Absolute Maximum Ratings (Operating temperature range applies unless otherwise specified) Lead Plastic TO-92 Package Code: A Pin 1: Reference Pin 2: Anode Pin 3: Cathode Characteristics Symbol Value Unit Cathode Voltage V KA 40 V Cathode Current Range (Continuous) I K -100~+150 ma Reference Input Current Range I REF 0.05~+10 ma SOT Power Dissipation Operating Temperature Range (Max.) T opr -40~+125 * Storage Temperature Range T stg -65~+150 P D TO mw o C o C Operating Conditions Characteristics Symbol Min. Max. Unit Cathode Voltage V KA V REF 36 V Cathode Current Range (Continuous) I K ma Operating Ambient Temperature Range o C

2 Page No. : 2/2 Functional Block Diagram & Symbol Functional Block Diagram Symbol Cathode Reference Anode Test Circuits Fig 1. V K =V REF Fig 2. V K >V REF Fig 3. Off-State Current IN I I V K IN I I V K IN V K I REF R 1 I REF I K I K I OFF V REF R 2 V REF Note: V K =V REF (1+R 1 /R 2 )+I REF xr 1 Electrical Characteristics (T A =25 o C unless otherwise specified) Characteristics Symbol Test Conditions Min Typ Max Unit 0.4% Reference Input Voltage (Fig1) V REF V K =V REF, I K =10mA 0.8% Deviation of Reference Input Voltage Over-Temperature (Fig1) V REF(dev) Ratio of Change in Reference Input Voltage ΔV REF / to the Change in Cathode Voltage (Fig2) ΔV K Reference Input Current (Fig2) Deviation of Reference Input Current Over Full Temperature Range (Fig2) I REF I REF(dev) V K =V REF, I K =10mA T min T a T max (-40~+125 ) I K =10mA, ΔV K =10V to V REF I K =10mA, ΔV K =36V to 10V I K =10mA, R 1 =10kΩ, R 2 = I K =10mA, R 1 =10kΩ, R 2 =, T a =-40~+125 o C V mv mv/v mv/v ua ua Minimum Cathode Current for Regulation (Fig1) I K(min) V K =V REF ma Off-State Cathode Current (Fig3) I K(off) V K =36V, V REF = ua Dynamic Output Impedance (Fig1) Z K V K =V REF, f 1kHz I K =1 to 100mA Ω

3 Page No. : 3/3 Typical Performance Characteristics

4 Page No. : 4/4 Typical Performance Characteristics (Continued)

5 Page No. : 5/5 Typical Performance Characteristics (Continued)

6 Page No. : 6/6 SOT-23 Dimension C V 1 A 3 G L 2 B S Marking: Pb Free Mark Pb-Free: " " (Note) Normal: None Note: Pb-free product can distinguish by the green label or the extra description on the right side of the label. Pin Style: 1.Reference 2.Cathode 3.Anode Material: Lead solder plating: Sn60/Pb40 (Normal), Sn/3.0Ag/0.5Cu or Pure-Tin (Pb-free) Mold Compound: Epoxy resin family, flammability solid burning class: UL94V-0 DIM Min. Max. A B C D G H J K L S V *: Typical, Unit: mm D H K J 3-Lead SOT-23 Plastic Surface Mounted Package Package Code: N TO-92 Dimension F B C E A 1 2 H I 3 D α1 α2 α3 G 3-Lead TO-92 Plastic Package Package Code: A Marking: Pb Free Mark Pb-Free: ". " (Note) Normal: None Date Code R S A Control Code Note: Green label is used for pb-free packing Pin Style: 1.Reference 2.Anode 3.Cathode Material: Lead solder plating: Sn60/Pb40 (Normal), Sn/3.0Ag/0.5Cu or Pure-Tin (Pb-free) Mold Compound: Epoxy resin family, flammability solid burning class: UL94V-0 DIM Min. Max. A B C D E - *1.27 F G H - *2.54 I - *1.27 α1 - *5 α2 - *2 α3 - *2 *: Typical, Unit: mm Ordering Information Package V REF : 2.5±0.8% V REF : 2.5±0.4% SOT-23 RS431BN RS431AN TO-92 RS431BA RS431AA

7 Page No. : 7/7 Soldering Methods for Orister s Products 1. Storage environment: Temperature=10 o C~35 o C Humidity=65%±15% 2. Reflow soldering of surface-mount devices Figure 1: Temperature profile TP Ramp-up tp Critical Zone TL to TP TL Tsmax tl Temperature Tsmin ts Preheat Ramp-down 25 t 25 o C to Peak Time Profile Feature Sn-Pb Eutectic Assembly Pb-Free Assembly Average ramp-up rate (T L to T P ) <3 o C/sec <3 o C/sec Preheat - Temperature Min (Ts min ) - Temperature Max (Ts max ) - Time (min to max) (ts) 100 o C 150 o C 60~120 sec 150 o C 200 o C 60~180 sec Tsmax to T L - Ramp-up Rate <3 o C/sec <3 o C/sec Time maintained above: - Temperature (T L ) - Time (t L ) 183 o C 60~150 sec 217 o C 60~150 sec Peak Temperature (T P ) 240 o C +0/-5 o C 260 o C +0/-5 o C Time within 5 o C of actual Peak Temperature (t P ) 10~30 sec 20~40 sec Ramp-down Rate <6 o C/sec <6 o C/sec Time 25 o C to Peak Temperature <6 minutes <8 minutes 3. Flow (wave) soldering (solder dipping) Products Peak temperature Dipping time Pb devices. 245 o C ±5 o C 5sec ±1sec Pb-Free devices. 260 o C +0/-5 o C 5sec ±1sec

8 Page No. : 8/8 Important Notice: All rights are reserved. Reproduction in whole or in part is prohibited without the prior written approval of Orister Corporation. Orister Corporation reserves the right to make changes to its products without notice. Orister Corporation products are not warranted to be suitable for use in Life-Support Applications, or systems. Orister Corporation assumes no liability for any consequence of customer product design, infringement of patents, or application assistance.