AX432

Page No. : 1/7 AX432 Series Adjustable Shunt Regulator AX432 Series Pin Assignment 3-Lead Plastic SOT-23 Package Code: N Pin 1: Reference Pin 2: Cathode Pin 3: Anode 3-Lead Plastic SOT-89 Package Code: M Pin 1: Reference Pin 2: Anode Pin 3: Cathode 3-Lead Plastic TO-92 Package Code: A Pin 1: Reference Pin 2: Anode Pin 3: Cathode 3 2 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 1 2 3 Features • 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 1 2 12 3 3 Ordering Information Package SOT-23 SOT-89 TO-92 VREF 1.24V±2% AX432AN AX432AM AX432AA VREF 1.24V±1% AX432BN AX432BM AX432BA VREF 1.24V±0.5% AX432CN AX432CM AX432CA VREF 1.25V±2% AX432DN AX432DM AX432DA VREF 1.25V±1% AX432EN AX432EM AX432EA VREF 1.25V±0.5% AX432FN AX432FM AX432FA Absolute Maximum Ratings (Operating temperature range applies unless otherwise specified) Characteristics Cathode Voltage Cathode Current Range (Continuous) Reference Input Current Range Power Dissipation Operating Temperature Range Junction Temperature Storage Temperature Range Symbol VKA IK IREF PD Topr TJ Tstg Value 30 50 0.05~+10 SOT-23 280 SOT-89 770 TO-92 770 0~+70 150 -65~+150 Unit V mA mA mW C C o C o o Operating Conditions Characteristics Cathode Voltage Cathode Current Range (Continuous) Symbol VKA IK Min. VREF 1 Typ. 10 Max. 30 Unit V mA AVANTICS - AX432 Series Specification No.: 050308-FE0002 Page No. : 2/7 Functional Block Diagram & Symbol Functional Block Diagram Symbol Cathode Reference VREF + - Cathode Reference Anode Anode Test Circuits Fig 1. VK=VREF VIN IREF IK VREF R2 VREF II VK Fig 2. VK>VREF VIN R1 II VK IREF IK IOFF Fig 3. Off-State Current VIN VK 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 Test Conditions 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 4 -1.4 -1 1 0.4 0.4 0.1 Max 1.265 1.252 1.246 1.275 1.262 1.256 17 -2.7 -2 4 1.2 1 1 Unit VREF VK=VREF, IK=10mA V 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) IREF IREF(dev) IK(min) IK(off) 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 mV mV/V mV/V uA uA mA uA AVANTICS - AX432 Series Specification No.: 050308-FE0002 Page No. : 3/7 Characteristics Curve Cathode Current & Cathode Voltage 20 15 Change in Reference Input Voltage & Cathode Voltage 0 Change in Reference Input Voltage (mV) -2 -4 -6 -8 -10 -12 -14 -16 -18 -20 0 10 20 Cathode Voltage (V) 30 40 10 Cathode Current (mA) 5 0 -5 -10 -15 -20 -25 -1 -0.5 0 0.5 Cathode Voltage (V) 1 1.5 VK=VREF, Ta=25 C Test Circuit (Fig1) o Reference Input Voltage & Temperature 1.248 1.246 Reference Input Voltage (V) 1.244 1.242 1.24 1.238 1.236 1.234 -20 0 20 40 60 o Temperature ( C) 80 100 120 VK=VREF, IK=10mA Test Circuit (Fig1) 300 200 100 0 -100 -200 -300 -400 -1 Cathode Current & Cathode Voltage Cathode Current (uA) VK=VREF, Ta=25 C Test Circuit (Fig1) o -0.5 0 0.5 Cathode Voltage (V) 1 1.5 Small Signal Voltage Amplification & Frequency 60 50 Voltage Amplification (dB) 40 30 Vout 20 10 0 -10 100 + 10uF 6.8K Ik 180 4.3K 5V GND 1000 10000 100000 Frequency (Hz) 1000000 10000000 AVANTICS - AX432 Series Specification No.: 050308-FE0002 Page No. : 4/7 Typical Application Fig 4. Shunt Regulator Fig 5. High Current Shunt Regulator Vcc R1 Vout Vcc R1 Vout R2 R2 Vout=(1+R1/R2)VREF Vout=(1+R1/R2)VREF Fig 6. Output Control of a Three-Terminal Fixed Regulator AX7805 Fig 7. Series Pass Regulator Vcc IN OUT COMMON Vout R1 Vcc R1 Vout 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 Iout Isink Rs Iout=VREF/RCL AVANTICS - AX432 Series Isink=VREF/RS Specification No.: 050308-FE0002 Page No. : 5/7 SOT-89 Dimension C H Marking: Date Code AX4 3 2 Control Code Pb Free Mark Pb-Free: " . " (Note) Normal: None B D 1 E G A 2 3 I 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 F J 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 A B 1 2 3 α2 Marking: Pb Free Mark Pb-Free: " . " (Note) Normal: None AX 432 A α3 Date Code Control Code C Note: Green label is used for pb-free packing D 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 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° H I E F G *: Typical, Unit: mm α1 3-Lead TO-92 Plastic Package AVANTICS Package Code: A AVANTICS - AX432 Series Specification No.: 050308-FE0002 Page No. : 6/7 SOT-23 Dimension Marking: 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 A L 432 BS Pb Free Mark Pb-Free: " " (Note) Normal: None 3 1 2 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 V G *: Typical, Unit: mm C D H K 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 TP Ramp-up TL Tsmax Temperature tL Critical Zone TL to TP Tsmin tS Preheat Ramp-down 25 t 25oC to Peak Time Profile Feature Average ramp-up rate (TL to TP) Preheat - Temperature Min (Tsmin) - Temperature Max (Tsmax) - Time (min to max) (ts) Tsmax to TL - Ramp-up Rate Time maintained above: - Temperature (TL) - Time (tL) Peak Temperature (TP) Time within 5oC of actual Peak Temperature (tP) Ramp-down Rate Time 25oC to Peak Temperature 3. Flow (wave) soldering (solder dipping) Products Pb devices. Pb-Free devices. Sn-Pb Eutectic Assembly