Page No. : 1/7 AX432 Series AX432 Series Pin Assignment Adjustable Shunt Regulator 3-Lead Plastic SOT-23 Package Code: N Pin 1: Reference Pin 2: Cathode Pin 3: Anode 3 1 Description The AX432 series are three-terminal adjustable regulators with guaranteed thermal stability over applicable temperature ranges. The output voltage may be set to any value between VREF (approximately 1.24 or 1.25 volts) and 30 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. 1 2 2 Features 1 • Programmable output voltage • Temperature coefficient is 50ppm/oC typical • Temperature compensated for operation over full temperature range • Low output noise voltage • Fast turn on response 3-Lead Plastic SOT-89 Package Code: M Pin 1: Reference Pin 2: Anode Pin 3: Cathode 3 2 12 3 3 3-Lead Plastic TO-92 Package Code: A Pin 1: Reference Pin 2: Anode Pin 3: Cathode Ordering Information Package VREF 1.24V±2% VREF 1.24V±1% VREF 1.24V±0.5% VREF 1.25V±2% VREF 1.25V±1% VREF 1.25V±0.5% SOT-23 SOT-89 TO-92 AX432AN AX432AM AX432AA AX432BN AX432BM AX432BA AX432CN AX432CM AX432CA AX432DN AX432DM AX432DA AX432EN AX432EM AX432EA AX432FN AX432FM AX432FA Absolute Maximum Ratings (Operating temperature range applies unless otherwise specified) Characteristics Symbol Cathode Voltage Cathode Current Range (Continuous) Reference Input Current Range VKA IK IREF Power Dissipation PD Operating Temperature Range Junction Temperature Storage Temperature Range Topr TJ Tstg Value Unit 30 50 0.05~+10 SOT-23 280 SOT-89 770 TO-92 770 0~+70 150 -65~+150 V mA mA mW C C o C o o Operating Conditions Characteristics Cathode Voltage Cathode Current Range (Continuous) AVANTICS - AX432 Series Symbol Min. Typ. Max. Unit VKA IK VREF 1 10 30 - V mA Specification No.: 050308-FE0002 Page No. : 2/7 Functional Block Diagram & Symbol Functional Block Diagram Reference Symbol + Cathode Cathode - Reference VREF Anode Anode Test Circuits Fig 1. VK=VREF VIN Fig 2. VK>VREF II VK II VIN IREF Fig 3. Off-State Current R1 VK VIN VK IREF IK IOFF IK VREF R2 VREF Note: VK=VREF(1+R1/R2)+IREFxR1 Electrical Characteristics (TA=25oC unless otherwise specified) Characteristics AX432AN/AM/AA AX432BN/BM/BA AX432CA/CM/CA Reference Input (Fig1) Voltage AX432DN/DM/DA AX432EN/EM/EA AX432FN/FM/FA Deviation of Reference Input Voltage OverTemperature (Fig1) Symbol VREF VREF(dev) Ratio of Change in Reference Input Voltage to ∆VREF / the Change in Cathode Voltage (Fig2) ∆VK Reference Input Current (Fig2) Deviation of Reference Input Current Over Full Temperature Range (Fig2) Minimum Cathode Current for Regulation (Fig1) Off-State Cathode Current (Fig3) AVANTICS - AX432 Series IREF IREF(dev) IK(min) IK(off) Test Conditions VK=VREF, IK=10mA VK=VREF, IK=10mA Tmin≤Ta≤Tmax IK=10mA, ∆VK=10V to VREF IK=10mA, ∆VK=30V to 10V IK=10mA, R1=10kΩ, R2=∞ IK=10mA, R1=10kΩ, R2=∞, Ta=Full Range VK=VREF VK=30V, VREF=0 Min 1.215 1.228 1.234 1.225 1.238 1.244 Typ 1.24 1.24 1.24 1.25 1.25 1.25 Max 1.265 1.252 1.246 1.275 1.262 1.256 Unit - 4 17 mV - -1.4 -2.7 mV/V - -1 -2 mV/V - 1 4 uA - 0.4 1.2 uA - 0.4 0.1 1 1 mA uA V Specification No.: 050308-FE0002 Page No. : 3/7 Characteristics Curve Change in Reference Input Voltage & Cathode Voltage Cathode Current & Cathode Voltage 20 0 Change in Reference Input Voltage (mV) 15 Cathode Current (mA) 10 5 0 -5 -10 -15 o VK=VREF, Ta=25 C Test Circuit (Fig1) -20 -2 -4 -6 -8 -10 -12 -14 -16 -18 -20 -25 -1 -0.5 0 0.5 Cathode Voltage (V) 1 0 1.5 300 1.246 200 1.244 100 1.242 1.24 1.238 30 40 0 -100 -200 o VK=VREF, IK=10mA Test Circuit (Fig1) 1.236 20 Cathode Voltage (V) Cathode Current & Cathode Voltage 1.248 Cathode Current (uA) Reference Input Voltage (V) Reference Input Voltage & Temperature 10 VK=VREF, Ta=25 C Test Circuit (Fig1) -300 1.234 -400 -20 0 20 40 60 o Temperature ( C) 80 100 120 -1 -0.5 0 0.5 Cathode Voltage (V) 1 1.5 Small Signal Voltage Amplification & Frequency 60 Voltage Amplification (dB) 50 40 30 Vout 20 6.8K Ik 180 + 10 10uF 4.3K 5V 0 GND -10 100 1000 10000 100000 Frequency (Hz) AVANTICS - AX432 Series 1000000 10000000 Specification No.: 050308-FE0002 Page No. : 4/7 Typical Application Fig 4. Shunt Regulator Fig 5. High Current Shunt Regulator Vcc Vout Vcc Vout R1 R1 R2 R2 Vout=(1+R1/R2)VREF Vout=(1+R1/R2)VREF Fig 6. Output Control of a Three-Terminal Fixed Fig 7. Series Pass Regulator Regulator Vcc IN AX7805 Vout OUT COMMON Vcc Vout R1 R1 R2 R2 Vout=(1+R1/R2)VREF; Vout(min)=VREF+5V Vout=(1+R1/R2)VREF; Vout(min)=VREF+VBE Fig 8. Current Limiter or Current Source Fig 9. Constant Current Sink Vcc Vcc RCL Isink Iout Rs Iout=VREF/RCL AVANTICS - AX432 Series Isink=VREF/RS Specification No.: 050308-FE0002 Page No. : 5/7 SOT-89 Dimension C Marking: H Date Code Control Code Pb Free Mark 1 2 F Pb-Free: " . " (Note) Normal: None AX4 3 2 D B 3 Note: Green label is used for pb-free packing E I J G A 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 A B C D E F G H I Min. 4.40 4.05 1.50 2.40 0.36 *1.50 *3.00 1.40 0.35 Max. 4.60 4.25 1.70 2.60 0.51 1.60 0.41 *: Typical, Unit: mm 3-Lead SOT-89 Plastic Surface Mounted Package AVANTICS Package Code: M TO-92 Dimension Marking: α2 A Pb Free Mark Pb-Free: " . " (Note) Normal: None B 1 2 A X 4 3 2 A 3 Date Code α3 Control Code Note: Green label is used for pb-free packing C D Pin Style: 1.Reference 2.Anode 3.Cathode H I G 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 A B C D E F G H I α1 α2 α3 Min. 4.33 4.33 12.70 0.36 3.36 0.36 - Max. 4.83 4.83 0.56 *1.27 3.76 0.56 *2.54 *1.27 *5° *2° *2° *: Typical, Unit: mm α1 E F AVANTICS - AX432 Series 3-Lead TO-92 Plastic Package AVANTICS Package Code: A Specification No.: 050308-FE0002 Page No. : 6/7 SOT-23 Dimension Marking: A L 4 3 2 B S 1 Note: Pb-free product can distinguish by the green label or the extra description on the right side of the label. 2 V Pb Free Mark Pb-Free: " " (Note) Normal: None 3 G 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 C D H K DIM A B C D G H J K L S V Min. 2.80 1.20 0.89 0.30 1.70 0.013 0.085 0.32 0.85 2.10 0.25 Max. 3.04 1.60 1.30 0.50 2.30 0.10 0.177 0.67 1.15 2.75 0.65 *: Typical, Unit: mm J 3-Lead SOT-23 Plastic Surface Mounted Package AVANTICS Package Code: N Important Notice: • All rights are reserved. Reproduction in whole or in part is prohibited without the prior written approval of AVANTIC. • AVANTICS reserves the right to make changes to its products without notice. • AVANTICS semiconductor products are not warranted to be suitable for use in Life-Support Applications, or systems. • AVANTICS assumes no liability for any consequence of customer product design, infringement of patents, or application assistance. Head Office: • AVANTICS Microelectronics Corp: No. 255, Cai Lun Rd. Zhangjiang Technology Industrial Park Pudong, Shanghai, China Tel: 86-021-58955599 Fax: 86-021-58558038 AVANTICS - AX432 Series Specification No.: 050308-FE0002 Page No. : 7/7 Soldering Methods for AVANTICS’s Products 1. Storage environment: Temperature=10oC~35oC Humidity=65%±15% 2. Reflow soldering of surface-mount devices Figure 1: Temperature profile tP Critical Zone TL to TP TP Ramp-up TL tL Temperature Tsmax Tsmin tS Preheat 25 Ramp-down t 25oC to Peak Time Profile Feature Sn-Pb Eutectic Assembly Pb-Free Assembly <3 C/sec <3oC/sec - Temperature Min (Tsmin) 100oC 150oC - Temperature Max (Tsmax) 150oC 200oC 60~120 sec 60~180 sec <3oC/sec <3oC/sec 183oC 217oC Average ramp-up rate (TL to TP) o Preheat - Time (min to max) (ts) Tsmax to TL - Ramp-up Rate Time maintained above: - Temperature (TL) - Time (tL) 60~150 sec Peak Temperature (TP) Time within 5oC of actual Peak Temperature (tP) Ramp-down Rate Time 25oC to Peak Temperature o o 60~150 sec 240 C +0/-5 C 260oC +0/-5oC 10~30 sec 20~40 sec <6oC/sec <6oC/sec <6 minutes <8 minutes Peak temperature Dipping time 245oC ±5oC 5sec ±1sec 3. Flow (wave) soldering (solder dipping) Products Pb devices. Pb-Free devices. AVANTICS - AX432 Series o o 260 C +0/-5 C 5sec ±1sec Specification No.: 050308-FE0002