View AX431CS_1214954.PDF datasheet online --- IC-ON-LINE

Datasheet File OCR Text:

Page No. : 1/7
AX431 Series
Adjustable Shunt Regulator
AX431 Series Pin Assignment
3 2 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
Description
The AX431 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 2.495 volts) and 36 volts with two external resistors. These devices have a typical dynamic output impedance of 0.2. 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
12 8 * 1 2 3 3
Ordering Information
Package SOT-23 SOT-89 TO-92 SO-8 VREF: 2.4952% AX431AN AX431AM AX431AA AX431AS VREF: 2.4951% AX431BN AX431BM AX431BA AX431BS
4
3-Lead Plastic SO-8 Package Code: S 7 6 Pin 1: Cathode 5 Pin 2/3/6/7: Anode Pin 4/5: NC Pin 8: Reference
VREF: 2.4950.5% AX431CN AX431CM AX431CA AX431CS
Absolute Maximum Ratings
(Operating temperature range applies unless otherwise specified) Characteristics Cathode Voltage Cathode Current Range (Continuous) Reference Input Current Range Symbol VKA IK IREF Value 36 -100~+150 0.05~+10 SOT-23 Power Dissipation PD SOT-89 TO-92 SO-8 Operating Temperature Range Storage Temperature Range Topr Tstg 0~+70 -65~+150 280 770 770 770
o o
Unit V mA mA
mW
C C
Operating Conditions
Characteristics Cathode Voltage Cathode Current Range (Continuous) Symbol VKA IK Min. VREF 1 Max. 36 100 Unit V mA
AVANTICS - AX431 Series
Specification No.: 050308-FE0001
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 IN IREF IK VREF R2 VREF II VK Fig 2. VK>VREF IN R1 II VK IREF IK IOFF Fig 3. Off-State Current IN VK
Note: VK=VREF(1+R1/R2)+IREFxR1
Electrical Characteristics (TA=25oC unless otherwise specified)
Characteristics Reference Input Voltage (Fig1) AX431AN/AM/AA/AS AX431BN/BM/BA/BS AX431CN/CM/CA/CS Symbol VREF VREF(dev) VREF / VK IREF IREF(dev) IK(min) IK(off) ZK Test Conditions VK=VREF, IK=10mA VK=VREF, IK=10mA TminTaTmax IK=10mA, VK=10V to VREF IK=10mA, VK=36V to 10V IK=10mA, R1=10k, R2= IK=10mA, R1=10k, R2=, Ta=Full Range VK=VREF VK=36V, VREF=0 VK=VREF, f1kHz IK=1 to 100mA Min 2.445 2.470 2.483 Typ 2.495 2.495 2.495 4 -1.4 -1.0 2 0.4 0.4 0.1 0.2 Max 2.545 2.520 2.507 17 -2.7 -2.0 4 1.2 1.0 1.0 0.5 Unit V mV mV/V mV/V uA uA mA uA
Deviation of Reference Input Voltage OverTemperature (Fig1) Ratio of Change in Reference Input Voltage to the Change in Cathode Voltage (Fig2)
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) Dynamic Output Impedance (Fig1)
AVANTICS - AX431 Series
Specification No.: 050308-FE0001
Page No. : 3/7
Characteristics Curve
Cathode Current & Cathode Voltage
150 125 Change in Reference Input Voltage (mV) 100 Cathode Current (mA) 75 50 25 0 -25 -50 -75 -100 -2 -1 0 1 Cathode Voltage (V) 2 3 VK=VREF, Ta=25 C Test Circuit (Fig1)
o
Change in Reference Input Voltage & Cathode Voltage
5 0 -5 -10 -15 -20 -25 -30 -35 -40 0 10 20 30 Cathode Voltage (V) 40 50 IK=10mA, Ta=25 C Test Circuits (Fig2)
o
Reference Input Voltage & Temperature
2.58 2.56 Reference Input Voltage (V) 2.54 2.52 2.50 2.48 2.46 2.44 2.42 2.40 -40 -20 0 20 40
o
Cathode Current & Cathode Voltage
1000 800 600 400 200 0 -200 -400 -2 -1 0 1 Cathode Voltage (V) 2 3
o
VK=VREF, IK=10mA Test Circuit (Fig1) 60 80 100 120
Cathode Current (uA)
VK=VREF, Ta=25 C Test Circuit (Fig1)
Temperature ( C)
Small Signal Voltage Amplification & Frequency
60 50 Voltage Amplification (dB) 40 30
Vout
20 10 0 -10 1000
+ 10uF
15K
Ik
240
8.2K GND
10000
100000 Frequency (Hz)
1000000
10000000
AVANTICS - AX431 Series
Specification No.: 050308-FE0001
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
Fig 7. Series Pass Regulator
Vcc
IN
AX7805
Vcc
Vout R1
Vout R1
OUT COMMON
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 - AX431 Series
Isink=VREF/RS
Specification No.: 050308-FE0001
Page No. : 5/7
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
431
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
SOT-89 Dimension
C H
Marking:
Date Code AX4 3 1 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
AVANTICS - AX431 Series
Specification No.: 050308-FE0001
Page No. : 6/7
TO-92 Dimension
A B
1 2 3
2
Marking:
Pb Free Mark
Pb-Free: " . " (Note) Normal: None
AX 431
A
3
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 1 2 3
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
1
3-Lead TO-92 Plastic Package AVANTICS Package Code: A
SO-8 Dimension
A G
Marking:
Pb Free Mark
Pb-Free: " . " (Note) A X Normal: None
8 B
7
6
5 C 4 J H
I
S
431 Control Code
Pin 1 Mark Date Code
Pin1 Index
2
3
Note: Green label is used for pb-free packing Pin Style: 1.Cathode 2/3/6/7.Anode 4/5.NC 8.Reference
D
E
Part A
K L N O
Part A
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
M
DIM A B C D E F G H I J K L M N O
Min. 4.85 3.85 5.80 1.22 0.37 3.74 1.45 4.80 0.05 0.30 0.19 0.37 0.23 0.08 0.00
Max. 5.10 3.95 6.20 1.32 0.47 3.88 1.65 5.10 0.20 0.70 0.25 0.52 0.28 0.13 0.15
*: Typical, Unit: mm
F
8-Lead SO-8 Plastic Surface Mounted Package AVANTICS Package Code: S
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 - AX431 Series
Specification No.: 050308-FE0001
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 <3 C/sec 100oC 150oC 60~120 sec <3oC/sec 183oC 60~150 sec 240 C +0/-5 C 10~30 sec <6oC/sec <6 minutes
o o o
Pb-Free Assembly <3oC/sec 150oC 200oC 60~180 sec <3oC/sec 217oC 60~150 sec 260oC +0/-5oC 20~40 sec <6oC/sec <8 minutes
Peak temperature 245 C 5 C
o o
Dipping time 5sec 1sec 5sec 1sec
260oC +0/-5oC
AVANTICS - AX431 Series
Specification No.: 050308-FE0001

▲Up To Search▲

Price & Availability of AX431CS

	To Download AX431CS Datasheet File
If you can't view the Datasheet, Please click here to try to view without PDF Reader .