ZETEX ZTL432BFFTA

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).
Both variants are available in 2 grades with
initial tolerances of 1% and 0.5% for the A and
B grades respectively.
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
•
Improved zener
•
Variable reference
•
0.5% ..................................... B grade
•
1% ......................................... A grade
•
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 3
Cathode 3
1 Anode
1 Anode
Cathode 2
Ref 2
6 Anode
N/C† 2
5 N/C†
4 NC
REF 3
† Connected internally to
substrate; should be left
floating or connected to Anode
ZTL431ASE5 SOT235
ZTL431_E5 SOT235
(top view)
(top view)
Cathode 1
N/C 1
5 N/C
N/C* 2
Anode 2
Ref 3
5 Anode
Cathode 3
4 N/C
4 Ref
* must be left floating
or connected to pin 5
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ZTL431, ZTL432
Ordering information
Tol.
1%
0.5%
Order code
Pack
Part mark
Status*
Reel Size
Tape width
(mm)
Quantity
per reel
ZTL431ACSTZ
TO92
ZTL431A
ZTL431AE5TA
SOT23-5
31A
Obsolete
Concertina
N/A
1500
Active
7”, 180mm
8
3000
ZTL431AFFTA
SOT23F
31A
Active
7”, 180mm
8
3000
ZTL431AFTA
SOT23
31A
Active
7”, 180mm
8
3000
ZTL431AH6TA
SC70-6
31A
Active
7”, 180mm
8
3000
ZTL431ASE5TA
SOT23-5
S2A
Active
7”, 180mm
8
3000
ZTL432AFFTA
SOT23F
32A
Active
7”, 180mm
8
3000
ZTL432AFTA
SOT23
32A
Active
7”, 180mm
8
3000
ZTL431BCSTZ
TO92
ZTL431B
Obsolete
Concertina
N/A
1500
ZTL431BE5TA
SOT23-5
31B
Active
7”, 180mm
8
3000
ZTL431BFFTA
SOT23F
31B
Active
7”, 180mm
8
3000
ZTL431BFTA
SOT23
31B
Active
7”, 180mm
8
3000
ZTL431BH6TA
SC70-6
31B
Active
7”, 180mm
8
3000
ZTL432BFFTA
SOT23F
32B
Active
7”, 180mm
8
3000
ZTL432BFTA
SOT23
32B
Active
7”, 180mm
8
3000
NOTES:
* For availability of preview 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
SOT70-6
160°C/W
380°C/W
138°C/W
250°C/W
380°C/W
780mW
330mW
900mW
500mW
330mW
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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 14 - January 2008
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mV
mV/V
µA
µA
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ZTL431, ZTL432
Typical characteristics
IKA = 10mA
VREF = VKA
Power dissipation (mW)
1000
SOT23F
900
800
TO92
700
600
SOT23-5
500
400
300
SOT23
SC70-6
200
100
0
0
25
50
75
100
125
Ambient temperature (°C)
Issue 14 - January 2008
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ZTL431, ZTL432
Typical characteristics
VKA
IKA
60
Gain (dB)
50
40
30
20
10
0
100
1000
10000
100000
1000000
Frequency (Hz)
IKA
Gain vs Frequency
VKA
VKA
VKA
100
Cathode Current (mA)
90
IKA
80
70
60
50
40
30
20
10
0
10.0E-12
100.0E-12
1.0E-9
10.0E-9
100.0E-9
1.0E-6
Load Capacitance (F)
VREF < VKA < 20, IKA = 10mA, TA = 25°C
Stability Boundary Condition
Issue 14 - January 2008
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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 14 - January 2008
© Zetex Semiconductors plc 2007
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 14 - January 2008
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ZTL431, ZTL432
Pin connections - obsolete devices
ZTL431_C TO92
(underside view)
Vz
Gnd
1
te
le
bso2
O
Vref
Issue 14 - January 2008
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8
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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
-
0.044
Millimeters
Min.
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
Package details - SC70-6
Dim. Millimeters
Min.
Inches
Min.
Max.
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
␣
Max.
1.10 0.0315 0.0433
0.10
2.00 BSC
-
Dim Millimeters
Inches
.
Min. Max. Max. Max.
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
Issue 14 - January 2008
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ZTL431, ZTL432
Package details SOT23F
c
D
b
Dim. Millimeters
e1
b
e
L1
A
L
b
A1
A
-
0.10
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
Dim. Millimeters
Max.
0.80 1.00 0.031 0.0394
A1
E
E1
Inches
Min. Max. Min.
e
0.95 ref
0.0374 ref
O
0°
12°
0°
12°
e1
1.90 ref
0.7480 ref
-
-
-
-
-
Note: Controlling dimensions are in millimeters.
Approximate dimensions are provided in inches
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 14 - January 2008
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ZTL431, ZTL432
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
1.90 REF
0.0374 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 14 - January 2008
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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
Kustermannpark
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
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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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