ZETEX ZTL431AH6TA

ZTL431, ZTL432
Cost effective adjustable precision shunt regulator
Description
The ZTL431 and ZTL432 are three terminal
adjustable shunt regulators offering excellent
temperature stability and output current
handling capability up to 100mA. The output
voltage may be set to any chosen voltage
between 2.5 and 20 volts by selection of two
external divider resistors.
The ZTL432 has the same electrical specifications
as the ZTL431 but has a different pin out in
SOT23 (F-suffix) and SOT23F (FF-suffix).
The devices can be used as a replacement for
zener diodes in many applications requiring an
improvement in zener performance.
These are functionally equivalent to the TL431/
TL432 except for maximum operation voltage,
and have an ambient temperature range of -40
to 125°C as standard.
Features
Applications
•
Temperature range ................ -40 to 125°C
•
Opto-coupler linearization
•
Reference voltage tolerance at 25°C
•
Linear regulators
Both variants are available in 2 grades with
initial tolerances of 1% and 0.5% for the A and
B grades respectively.
•
0.5% ..................................... B grade
•
Improved zener
•
1% ......................................... A grade
•
Variable reference
•
Low output noise
•
0.2 typical output impedance
•
Sink current capability ...... 1mA to 100mA
•
Adjustable output voltage ...... VREF to 20V
Pin connections
ZTL431_F SOT23
ZTL431_FF SOT23F
ZTL432_F SOT23
ZTL432_FF SOT23F
ZTL431_H6 SC70-6
(top view)
(top view)
(top view)
Cathode 1
Ref 1
Cathode 1
3 Anode
Ref 2
Issue 8 - April 2007
© Zetex Semiconductors plc 2007
3 Anode
Cathode 2
* 2
iew5
v
Pre
REF 3
1
6 Anode
*
4 NC
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ZTL431, ZTL432
Ordering information
Tol.
1%
0.5%
Order code
Pack
Part mark
Status*
Reel Size
Tape width
(mm)
ZTL431A
31A
Active
Concertina
N/A
1500
Preview*
7”, 180mm
8
3000
7”, 180mm
8
3000
ZTL431ACSTZ
TO92
ZTL431AE5TA
SOT23-5
ZTL431AFFTA
SOT23F
31A
Active
Active
Quantity
per reel
ZTL431AFTA
SOT23
31A
7”, 180mm
8
3000
ZTL431AH6TA
SC70-6
31A
Preview
*
7”, 180mm
8
3000
ZTL431AZTA
SOT89
31A
Preview*
7”, 180mm
12
1000
ZTL432AFFTA
SOT23F
32A
Active
7”, 180mm
8
3000
ZTL432AFTA
SOT23
32A
Active
7”, 180mm
8
3000
ZTL431BCSTZ
TO92
ZTL431B
Preview*
Concertina
N/A
1500
Preview*
ZTL431BE5TA
SOT23-5
31B
7”, 180mm
8
3000
ZTL431BFFTA
SOT23F
31B
Preview*
7”, 180mm
8
3000
ZTL431BFTA
SOT23
31B
Active
7”, 180mm
8
3000
SC70-6
31B
Preview
*
7”, 180mm
8
3000
SOT89
31B
Preview*
7”, 180mm
12
1000
ZTL432BFFTA
SOT23F
32B
Active
7”, 180mm
8
3000
ZTL432BFTA
SOT23
32B
Active
7”, 180mm
8
3000
ZTL431BH6TA
ZTL431BZTA
NOTES:
* For availability of pre-production status devices contact your local Zetex representative
Absolute maximum ratings
Cathode voltage (VKA) .............................................................. 20V
Continuous cathode current (IKA) ........................................ 150mA
Reference input current range (IREF)..................... -50 µA to 10mA
Operating junction temperature ................................. -40 to 150°C
Storage temperature ................................................... -55 to 150°C
Operation above the absolute maximum rating may cause device failure. Operation at the
absolute maximum ratings, for extended periods, may reduce device reliability.
Unless otherwise stated voltages specified are relative to the ANODE pin.
Package thermal data
Package
⍜JA
PDIS
TA =25°C, TJ = 150°C
TO92
SOT23
SOT23F
SOT23-5
SOT89
160°C/W
380°C/W
138°C/W
250°C/W
125°C/W
780mW
330mW
900mW
500mW
1000mW
Issue 8 - April 2007
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2
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ZTL431, ZTL432
Recommended operating conditions
VKA
Cathode voltage
Min
Vref
Max
20
Units
V
IKA
Cathode current
1
100
mA
TA
Operating ambient temperature range
-40
125
°C
Electrical characteristics
Electrical characteristics over recommended operating conditions, TA = 25°C, unless otherwise stated.
Symbol Parameter
VREF
Reference voltage
VDEV
ΔVREF
ΔVKA
IREF
ΔIREF
Conditions
VKA = VREF
IKA = 10mA
ZTL43_A
ZTL43_B
Min.
2.475
2.487
Typ.
2.5
2.5
Max.
2.525
2.513
Units
V
Deviation of reference
voltage over full
VKA = VREF
temperature range
IKA = 10 mA
TA = 0 to 70°
6
16
TA = -40 to 85°C
14
34
TA = -40 to 125°C
14
34
Ratio of change in
reference voltage
to the change in
cathode voltage
Reference input
current
VKA = VREF to 10
-1.4
-2.7
VKA = 10V to 20V
-1.0
-2.0
2
4
TA = 0 to 70°C
0.8
1.2
TA = -40 to 85°C
0.8
2.5
TA = -40 to 125°C
0.8
2.5
0.4
0.6
mA
0.1
0.5
µA
0.2
0.5
⍀
IKA = 10mA
IKA = 10mA, R1 = 10k⍀
R2 = OC
IKA = 10mA
IREF deviation over full R1 = 10k⍀
temperature range
R2 = OC
IKA(MIN) Minimum cathode
VKA = VREF
current for regulation
IKA(OFF) Off state current
VKA = 20V, VREF = 0V
Dynamic output
VKA = VREF, f = 0Hz
RZ
impedance
Issue 8 - April 2007
© Zetex Semiconductors plc 2007
3
mV
mV/V
µA
µA
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ZTL431, ZTL432
Typical characteristics
IKA = 10mA
VREF = VKA
125
Issue 8 - April 2007
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4
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ZTL431, ZTL432
Typical characteristics
VKA
IKA
IKA
VKA
VKA
VKA
IKA
VREF < VKA < 20, IKA = 10mA, TA = 25°C
Issue 8 - April 2007
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5
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ZTL431, ZTL432
Application cicuits
V+
V+
VOUT
VOUT
R1
R1
VREF
VREF
R2
R2
VREF
VOUT
VREF
VOUT
Higher current shunt
regulator
Shunt regulator
V+
ZSR***
V+
In
VOUT
Out
30⍀
Common
R1
0.01␮F
VREF
R1
VOUT
R2
VREF
R2
VOUT(MIN) = VREF + VREG
VREF
VOUT
VOUT
Output control of a three
terminal fixed regulator
VREF
Series regulator
V+
R1
V+
R1
Output
VREF
VON~ 2V
VOFF = V+
R2a
VREF
Output
Input
VTH = 2.5V
R2b
VREF
VREF
Single supply comparator
with temperature
compensated threshold
Issue 8 - April 2007
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Over voltage / under voltage
protection circuit
6
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ZTL431, ZTL432
DC test circuits
IL
IL
VKA
IKA
IKA
IREF
VKA
IKA(OFF)
IREF
VREF
VREF
Figure 1 Test circuit for
VKA = VREF
VKA
Figure 2 Test circuit for
VKA > VREF
Figure 3 Test circuit for
off state current
Notes
Deviation of reference input voltage, Vdev, is
defined as the maximum variation of the
reference input voltage over the full
temperature range.
The average temperature coefficient of the
reference input voltage, Vref is defined as:
V DEV × 1, 000, 000
V REF ( ppm°C ) = -----------------------------------------------V REF ( T1 – T2 )
The dynamic output impedance, Rz, is
defined as:
ΔV
R z = ---------zΔI z
When the device is programmed with two
external resistors, R1 and R2, (fig 2), the
dynamic output impedance of the overall
circuit, R'z, is defined as:
R' z = R z ⎛ 1 + R1
-------⎞
⎝
R2⎠
Stability boundary
The ZTL431 and ZTL432 are stable with a
range of capacitive loads. A zone of instability
exists as demonstrated in the typical
characteristic graph on page 5. The graph
shows typical conditions. To ensure reliable
stability a capacitor of 4.7nF or greater is
recommended between anode and cathode.
Issue 8 - April 2007
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7
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ZTL431, ZTL432
Pin connections - preview status devices
ZTL431_Z SOT89
ZTL431_E5 SOT235
(top view)
(top view)
Cathode
Anode
ew
vi
Pre
Anode
Ref
N/C 1
* 2
(underside view)
Vz
1
Gnd
2
Vref
3
5 Anode
w
ie
rev
P
Cathode 3
ZTL431_C TO92
4 Ref
* Pin 2 should be left floating or connected to pin 5
Issue 8 - April 2007
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ZTL431, ZTL432
Packaging details - SOT23
E
Dim. Millimeters
Inches
Min. Max. Min.
A
e
e1
b
3 leads
L1
1.12
-
Millimeters
Min.
0.044
Inches
Max. Max.
Max.
e1
1.90 NOM
0.075 NOM
0.083 0.104
A1
0.01 0.10 0.0004 0.004
E
2.10
2.64
b
0.30 0.50 0.012 0.020
E1
1.20
1.40
0.047 0.055
C
0.085 0.120 0.003 0.008
L
0.25
0.62
0.018 0.024
D
2.80 3.04 0.110 0.120
L1
0.45
0.62
0.018 0.024
e
0.95 NOM 0.0375 NOM
-
-
-
-
-
Note: Controlling dimensions are in millimeters.
Approximate dimensions are provided in inches
D
E1
-
Dim.
Max.
A
A1
L
c
Packaging details - SOT23-5
Dim.
Millimeters
Inches
Min.
Max.
Min.
Max.
A
0.90
1.45
0.0354
0.0570
A1
0.00
0.15
0.00
0.0059
A2
0.90
1.30
0.0354
0.0511
0.0196
b
0.20
0.50
0.0078
C
0.09
0.26
0.0035
0.0102
D
2.70
3.10
0.1062
0.1220
E
2.20
3.20
0.0866
0.1181
E1
1.30
1.80
0.0511
0.0708
e
0.95 REF
e1
0.0374 REF
1.90 REF
0.0748 REF
L
0.10
0.60
0.0039
0.0236
a°
0°
30°
0°
30°
Note: Controlling dimensions are in millimeters.
Approximate dimensions are provided in inches
Issue 8 - April 2007
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ZTL431, ZTL432
Package details - SOT89
Dim. Millimeters
D
A
C
D1
E
H
E1
e
B1
Dim. Millimeters
1.40
1.60 0.550 0.630
Min. Max.
E1
2.13
Inches
Min
Max.
2.29 0.084 0.090
B
0.44
0.56 0.017 0.022
e
1.50 BSC
0.059 BSC
B1
0.36
0.48 0.014 0.019
e1
3.00 BSC
0.118 BSC
C
0.35
0.44 0.014 0.019
H
3.94
4.25 0.155 0.167
D
4.40
4.60 0.173 0.181
L
0.89
1.20 0.155 0.167
E
2.29
2.60 0.090 0.102
-
-
-
-
Note: Controlling dimensions are in millimeters.
Approximate dimensions are provided in inches
L
B
Inches
Min. Max. Min. Max.
A
e1
Package details - TO92
Dim.
C
A
Millimeters
Inches
Min.
Max.
Min.
Max.
4.32
4.95
0.170
0.195
b
0.36
0.51
0.014
0.020
C
2.50
3.50
0.099
0.138
E
3.30
3.94
0.130
0.155
e
4.88
5.88
0.192
0.232
e1
2.44
2.94
0.096
0.116
L
12.70
15.49
0.500
0.610
0.095
R
2.16
2.41
0.085
S1
1.14
1.52
0.045
0.060
W
0.41
0.56
0.016
0.022
D
4.45
4.95
0.175
0.195
*°
4°
6°
4°
6°
Note: Controlling dimensions are in millimeters.
Approximate dimensions are provided in inches
Issue 8 - April 2007
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10
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ZTL431, ZTL432
Package details - SC70-6
Dim. Millimeters
Min.
Dim Millimeters
Inches
.
Min. Max. Max. Max.
Max.
Max.
1.10 0.0315 0.0433
A
0.80
A1
-
A2
0.80
1.00 0.0315 0.0394
b
0.15
0.30
C
0.08
0.25 0.0031 0.0098
D
␣
Inches
Min.
0.10
2.00 BSC
-
E
0.0039 E1
2.10 BSC
1.25
0.0826 BSC
1.35 0.0492 0.0531
e
0.65 BSC
0.0255 BSC
0.006 0.0118 e1
1.30 BSC
0.0511 BSC
0.0787 BSC
L
0.26
␣
0°
0.46 0.0102 0.0181
8°
0°
8°
Note: Controlling dimensions are in millimeters.
Approximate dimensions are provided in inches
Package details SOT23F
c
D
b
Dim. Millimeters
e1
b
e
L1
A
L
A1
E
E1
E2
b
A1
0.80 1.00 0.031 0.0394
-
0.10
Dim. Millimeters
Max.
Inches
Min.
Max. Max.
E
2.30
2.50 0.0906 0.0984
Max.
1.70 0.0590 0.0669
0.00 0.0043 E1
1.50
0.06 0.16 0.0024 0.0006 E2
1.10
1.26 0.0433 0.0496
0.39 0.41 0.0153 0.0161
L
0.48
0.68 0.0189 0.0268
c
0.11 0.20 0.0043 0.0079 L1
0.39
0.41 0.0153 0.0161
D
2.80 3.00 0.1102 0.1181
R
0.05
0.15 0.0019 0.0059
A2
b
R
Inches
Min. Max. Min.
e
0.95 ref
0.0374 ref
O
0°
12°
0°
12°
e1
1.90 ref
0.7480 ref
-
-
-
-
-
A
Note: Controlling dimensions are in millimeters.
Approximate dimensions are provided in inches
Issue 8 - April 2007
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ZTL431, ZTL432
Definitions
Product change
Zetex Semiconductors reserves the right to alter, without notice, specifications, design, price or conditions of supply of any product or
service. Customers are solely responsible for obtaining the latest relevant information before placing orders.
Applications disclaimer
The circuits in this design/application note are offered as design ideas. It is the responsibility of the user to ensure that the circuit is fit for
the user’s application and meets with the user’s requirements. No representation or warranty is given and no liability whatsoever is
assumed by Zetex with respect to the accuracy or use of such information, or infringement of patents or other intellectual property rights
arising from such use or otherwise. Zetex does not assume any legal responsibility or will not be held legally liable (whether in contract,
tort (including negligence), breach of statutory duty, restriction or otherwise) for any damages, loss of profit, business, contract,
opportunity or consequential loss in the use of these circuit applications, under any circumstances.
Life support
Zetex products are specifically not authorized for use as critical components in life support devices or systems without the express written
approval of the Chief Executive Officer of Zetex Semiconductors plc. As used herein:
A. Life support devices or systems are devices or systems which:
1. are intended to implant into the body
or
2. support or sustain life and whose failure to perform when properly used in accordance with instructions for use provided in the
labelling can be reasonably expected to result in significant injury to the user.
B. A critical component is any component in a life support device or system whose failure to perform can be reasonably expected to
cause the failure of the life support device or to affect its safety or effectiveness.
Reproduction
The product specifications contained in this publication are issued to provide outline information only which (unless agreed by the
company in writing) may not be used, applied or reproduced for any purpose or form part of any order or contract or be regarded as a
representation relating to the products or services concerned.
Terms and Conditions
All products are sold subjects to Zetex’ terms and conditions of sale, and this disclaimer (save in the event of a conflict between the two
when the terms of the contract shall prevail) according to region, supplied at the time of order acknowledgement.
For the latest information on technology, delivery terms and conditions and prices, please contact your nearest Zetex sales office.
Quality of product
Zetex is an ISO 9001 and TS16949 certified semiconductor manufacturer.
To ensure quality of service and products we strongly advise the purchase of parts directly from Zetex Semiconductors or one of our
regionally authorized distributors. For a complete listing of authorized distributors please visit: www.zetex.com/salesnetwork
Zetex Semiconductors does not warrant or accept any liability whatsoever in respect of any parts purchased through unauthorized sales channels.
ESD (Electrostatic discharge)
Semiconductor devices are susceptible to damage by ESD. Suitable precautions should be taken when handling and transporting devices.
The possible damage to devices depends on the circumstances of the handling and transporting, and the nature of the device. The extent
of damage can vary from immediate functional or parametric malfunction to degradation of function or performance in use over time.
Devices suspected of being affected should be replaced.
Green compliance
Zetex Semiconductors is committed to environmental excellence in all aspects of its operations which includes meeting or exceeding
regulatory requirements with respect to the use of hazardous substances. Numerous successful programs have been implemented to
reduce the use of hazardous substances and/or emissions.
All Zetex components are compliant with the RoHS directive, and through this it is supporting its customers in their compliance with
WEEE and ELV directives.
Product status key:
“Preview”
Future device intended for production at some point. Samples may be available
“Active”
Product status recommended for new designs
“Last time buy (LTB)”
Device will be discontinued and last time buy period and delivery is in effect
“Not recommended for new designs” Device is still in production to support existing designs and production
“Obsolete”
Production has been discontinued
Datasheet status key:
“Draft version”
This term denotes a very early datasheet version and contains highly provisional information, which
may change in any manner without notice.
“Provisional version”
This term denotes a pre-release datasheet. It provides a clear indication of anticipated performance.
However, changes to the test conditions and specifications may occur, at any time and without notice.
“Issue”
This term denotes an issued datasheet containing finalized specifications. However, changes to
specifications may occur, at any time and without notice.
Zetex sales offices
Europe
Americas
Asia Pacific
Corporate Headquarters
Zetex GmbH
Kustermann-park
Balanstraße 59
D-81541 München
Germany
Telefon: (49) 89 45 49 49 0
Fax: (49) 89 45 49 49 49
[email protected]
Zetex Inc
700 Veterans Memorial Highway
Hauppauge, NY 11788
USA
Zetex (Asia Ltd)
3701-04 Metroplaza Tower 1
Hing Fong Road, Kwai Fong
Hong Kong
Zetex Semiconductors plc
Zetex Technology Park, Chadderton
Oldham, OL9 9LL
United Kingdom
Telephone: (1) 631 360 2222
Fax: (1) 631 360 8222
[email protected]
Telephone: (852) 26100 611
Fax: (852) 24250 494
[email protected]
Telephone: (44) 161 622 4444
Fax: (44) 161 622 4446
[email protected]
© 2007 Published by Zetex Semiconductors plc
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