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ZTL431,2 Datasheet

Diodes Incorporated

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Datasheet

ZTL431/ZTL432
Document number: DS33263 Rev. 17 - 2
1 of 10
www.diodes.com
August 2015
© Diodes Incorporated
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 devices can be used as a replacement for zener diodes in many
applications requiring an improvement in zener performance.
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
two
grades with initial tolerances of 1%
and 0.5% for the A and B grades
, respectively.
These are functionally equivalent to the TL431/ TL432 except for
maximum operation voltage, and have an ambient temperature range
of
-40°C to +125°C as standard.
Pin Assignments
ZTL431_F SOT23, ZTL431_FF SOT23F
(Top View)
ZTL432_F SOT23, ZTL432_FF SOT23F
(Top View)
ZTL431_H6, SOT363
(Top View)
†Connected internally to substrate;
should be left floating or connected to Anode
ZTL431ASE5 SOT25
(Top View)
ZTL431_E5 SOT25
(Top View)
*must be left floating or
connected to pin 5
Features
x
Temperature Range ................ -40°C to +125°C
x
Reference Voltage Tolerance at +25°C
0.5%.......................................B grade
1% .........................................A grade
x
0.2 Typical Output Impedance
x
Sink Current Capability…….. 1mA to 100mA
x
Adjustable Output Voltage……VREF to 20V
x
Totally Lead-Free & Fully RoHS Compliant (Notes 1 & 2)
x
Halogen and Antimony Free. “Green” Device (Note 3)
Applications
x
Opto-Coupler Linearization
x
Linear Regulators
x
Improved Zener
x
Variable Reference
Notes: 1. No purposely added lead. Fully EU Directive 2002/95/EC (RoHS) & 2011/65/EU (RoHS 2) compliant.
2. See http://www.diodes.com/quality/lead_free.html for more information about Diodes Incorporated’s definitions of Halogen and Antimony-free, "Green"
and Lead-free.
3. Halogen- and Antimony-free "Green” products are defined as those which contain <900ppm bromine, <900ppm chlorine (<1500ppm total Br + Cl)
and <1000ppm antimony compounds.
Anode
Cathode
Ref
2
1
3
Anode
Cathode
Ref
2
1
3
Anode
Cathode
Ref
2
1
3
Cathode
Ref
N/C
N/C
NC
Anode
3
2
1
4
5
6
Cathode
2
Anode
Cathode
N/C
3
15
4
Ref
N/C
2
Anode
Cathode
N/C
3
15
4
Ref
N/C*
ZTL431/ZTL432
Document number: DS33263 Rev. 17 - 2
2 of 10
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August 2015
© Diodes Incorporated
ZTL431/ZTL432
Absolute Maximum Ratings (Voltages specified are relative to the ANODE pin unless otherwise stated.)
Rating
Unit
20
V
150
mA
-50μA to +10mA
-
-40 to +150
°C
-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.
Package Thermal Data
Package
T
JA
P
DIS
TA = +25°C, TJ = +150°C
SOT23
380°C/W
330mW
SOT23F
138°C/W
900mW
SOT25
250°C/W
500mW
SOT363
380°C/W
330mW
Recommended Operating Conditions (@TA = +25°C, unless otherwise specified.)
Symbol
Parameter
Min
Max
Unit
VKA
Cathode Voltage
VREF
20
V
IKA
Cathode Current
1
100
mA
TA
Operating Ambient Temperature Range
-40
+125
°C
Electrical Characteristics (@TA = +25°C, unless otherwise specified.)
Symbol
Parameter
Conditions
Min
Typ
Max
Units
VREF
Reference Voltage
V
KA
= V
REF
IKA = 10mA
ZTL43_A
2.475
2.5
2.525
V
ZTL43_B
2.487
2.5
2.513
VDEV
Deviation of Reference Voltage Over Full
Temperature Range
V
KA = VREF
IKA
= 10 mA
TA = 0 to +70°
-
6
16
mV
TA = -40 to +85°C
-
14
34
TA = -40 to +125°C
-
14
34
'VREF
'
VKA
Ratio of Change In Reference V
oltage
To the Change In Cathode Voltage
IKA
= 10mA
VKA = VREF to 10
-
-1.4
-2.7
mV/V
VKA = 10V to 20V
-
-1.0
-2.0
IREF
Reference Input Current
IKA = 10mA, R1 = 10k, R2 = OC
-
2
4
μA
'IREF
IREF
Deviation Over Full Temperature Range
IKA
= 10mA
R
1 = 10k
R
2 = OC
TA = 0 to +70°C
-
0.8
1.2
μA
TA = -40 to +85°C
-
0.8
2.5
TA = -40 to +125°C
-
0.8
2.5
I
KA(MIN)
Minimum Cathode Current for Regulation
VKA = VREF
-
-
0.4
0.6
mA
I
KA(OFF)
Off
-State Current
V
KA
= 20V, V
REF
=
0V
-
-
0.1
0.5
μA
RZ
Dynamic Output Impedance
VKA = VREF, f = 0Hz
-
-
0.2
0.5
ZTL431/ZTL432
Document number: DS33263 Rev. 17 - 2
3 of 10
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August 2015
© Diodes Incorporated
ZTL431/ZTL432
Typical Characteristics
IKA =10mA
V
REF
=V
KA
0
100
200
300
400
500
600
700
800
900
1000
0 255075100125
SOT23-5
SOT23
SC70-6
SOT23F
Ambient Temperature (°C)
Power Dissipation (mW)
Reference Voltage vs. Temperature
Dynamic Impedance vs. Frequency
Power Dissipation Derating
ZTL431/ZTL432
Document number: DS33263 Rev. 17 - 2
4 of 10
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August 2015
© Diodes Incorporated
ZTL431/ZTL432
Typical Characteristics (continued)
IKA
IKA
I
KA
V
KA
V
KA
V
REF
<V
KA
<20,I
KA
=10mA,T
A
=25°C
V
KA
VKA
Stability Boundary Condition
0
10
20
30
40
50
60
70
80
90
100
10.0E-12 100.0E-12 1.0E-9 10.0E-9 100.0E-9 1.0E-6
Load Capacitance (F)
Cathod
eC
u
r
re
n
t(
mA)
Gain vs. Frequency
0
10
20
30
40
50
60
100 1000 10000 100000 1000000
Frequency (Hz)
Gain (dB)
Stable
a
b
b
e
e
Stable
Pulse Response
Test Circuit for Stabilty Boundary Conditions
Test Circuit for Pulse Response
Test Circuit for Open Loop Voltage Gain
ZTL431/ZTL432
Document number: DS33263 Rev. 17 - 2
5 of 10
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August 2015
© Diodes Incorporated
ZTL431/ZTL432
Application Circuits
V
ON
~2V
V
OFF
=V
+
V
TH
=2.5V
Output
V+
Input
R1
R2
V
OUT
V
OUT
V+
V
REF
V
REF
R1
R2
V
OUT
V
OUT
V+
V
REF
V
REF
R1
R2
V
OUT
V
OUT
V+
V
REF
V
REF
V
OUT(MIN)
=V
REF
+V
REG
In Out
Common
ZSR***
0.01μF
30
R1
R2
V
REF
V+
V
OUT
V
OUT
V
REF
R1
R1
R2b
R2a
V
REF
V
REF
V
REF
V
REF
V+
Outpu
t
Shunt regulator
Output control of a three
terminal fixed regulator
Single supply comparator
with temperature
compensated threshold
Higher current shunt
regulator
Series regulator
Over voltage / under voltage
protection circuit
ZTL431/ZTL432
Document number: DS33263 Rev. 17 - 2
6 of 10
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August 2015
© Diodes Incorporated
ZTL431/ZTL432
DC Test Circuits
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:
VREF(ppm/°C) = VDEV u 1,000,000
VREF(T1-T2)
The dynamic output impedance, R
z, is defined as:
R
Z = VZ
IZ
When the device is programmed with two external resistors, R1
and R2, (
Figure
2), the dynamic output impedance of the
overall circuit, R'
z, is defined as:
R'
Z = RZ (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
4
. The graph shows typical
conditions. To ensure reliable stability
,
a capacitor of 4.7nF or
greater is recommended between anode and cathode.
ZTL431/ZTL432
Document number: DS33263 Rev. 17 - 2
7 of 10
www.diodes.com
August 2015
© Diodes Incorporated
ZTL431/ZTL432
Ordering Information
Tol.
Ordering Code
Pack
Part Mark
Status*
Reel Size
Tape Width
(mm)
Quantity per
Reel
1%
ZTL431AE5TA
SOT25
31A
Active
7”, 180mm
8
3,000
ZTL431AFFTA
SOT23F
31A
Active
7”, 180mm
8
3,000
ZTL431AFTA
SOT23
31A
Active
7”, 180mm
8
3,000
ZTL431AH6TA
SOT363
31A
Active
7”, 180mm
8
3,000
ZTL431ASE5TA
SOT25
S2A
Active
7”, 180mm
8
3,000
ZTL432AFFTA
SOT23F
32A
Active
7”, 180mm
8
3,000
ZTL432AFTA
SOT23
32A
Active
7”, 180mm
8
3,000
0.5%
ZTL431BE5TA
SOT25
31B
Active
7”, 180mm
8
3,000
ZTL431BFFTA
SOT23F
31B
Active
7”, 180mm
8
3,000
ZTL431BFTA
SOT23
31B
Active
7”, 180mm
8
3,000
ZTL431BH6TA
SOT363
31B
Active
7”, 180mm
8
3,000
ZTL432BFFTA
SOT23F
32B
Active
7”, 180mm
8
3,000
ZTL432BFTA
SOT23
32B
Active
7”, 180mm
8
3,000
Package Outline Dimensions
Please see AP02002 at http://www.diodes.com/datasheets/ap02002.pdf for the latest version.
SOT23
-
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+
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'
*
)
D
SOT23F
( (
'
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H
H
/
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6HDWLQJ
3ODQH
E
5
F
N
SOT23
Dim
Min
Max
Typ
A
0.37
0.51
0.40
B
1.20
1.40
1.30
C
2.30
2.50
2.40
D
0.89
1.03
0.915
F
0.45
0.60
0.535
G
1.78
2.05
1.83
H
2.80
3.00
2.90
J
0.013
0.10
0.05
K
0.890
1.00
0.975
K1
0.903
1.10
1.025
L
0.45
0.61
0.55
L1
0.25
0.55
0.40
M
0.085
0.150
0.110
a
All Dimensions in mm
SOT23F
Dim
Min
Max
Typ
A
0.80
1.00
0.90
b
0.35
0.45
0.40
c
0.06
0.16
0.11
D
2.80
3.00
2.90
e
-
-
0.95
e1
-
-
1.90
E
2.30
2.50
2.40
E1
1.50
1.70
1.60
k
1.10
1.26
1.18
L
0.48
0.68
0.58
L1
0.39
0.41
0.40
R
0.05
0.15
0.10
All Dimensions in mm
ZTL431/ZTL432
Document number: DS33263 Rev. 17 - 2
8 of 10
www.diodes.com
August 2015
© Diodes Incorporated
ZTL431/ZTL432
Package Outline Dimensions (continued)
Please see AP02002 at http://www.diodes.com/datasheets/ap02002.pdf for the latest version.
SOT363
SOT25
Suggested Pad Layout
Please see AP02001 at http://www.diodes.com/datasheets/ap02001.pdf for the latest version.
SOT23
SOT23F
SOT363
Dim
Min
Max
Typ
A
0.10
0.30
0.25
B
1.15
1.35
1.30
C
2.00
2.20
2.10
D
0.65 Typ
F
0.40
0.45
0.425
H
1.80
2.20
2.15
J
0
0.10
0.05
K
0.90
1.00
1.00
L
0.25
0.40
0.30
M
0.10
0.22
0.11
D
-
All Dimensions in mm
SOT25
Dim
Min
Max
Typ
A
0.35
0.50
0.38
B
1.50
1.70
1.60
C
2.70
3.00
2.80
D


0.95
H
2.90
3.10
3.00
J
0.013
0.10
0.05
K
1.00
1.30
1.10
L
0.35
0.55
0.40
M
0.10
0.20
0.15
N
0.70
0.80
0.75
D

All Dimensions in mm
Dimensions
Value (in mm)
Z
2.9
X
0.8
Y
0.9
C
2.0
E
1.35
Dimensions
Value (in
mm)
C
0.95
X
0.80
Y
1.110
Y1
3.000
A
M
JL
D
B C
H
K
F
A
M
JL
D
B C
H
KN
XE
Y
C
Z
;
<
<
&
ZTL431/ZTL432
Document number: DS33263 Rev. 17 - 2
9 of 10
www.diodes.com
August 2015
© Diodes Incorporated
ZTL431/ZTL432
Suggested Pad Layout (continued)
Please see AP02001 at http://www.diodes.com/datasheets/ap02001.pdf for the latest version.
SOT363
SOT25
Dimensions
Value (in mm)
Z
2.5
G
1.3
X
0.42
Y
0.6
C1
1.9
C2
0.65
Dimensions
Value (in mm)
Z
3.20
G
1.60
X
0.55
Y
0.80
C1
2.40
C2
0.95
X
Z
Y
C1
C2
C2
G
X
Z
Y
C1
C2C2
G
ZTL431/ZTL432
Document number: DS33263 Rev. 17 - 2
10 of 10
www.diodes.com
August 2015
© Diodes Incorporated
ZTL431/ZTL432
IMPORTANT NOTICE
DIODES INCORPORATED MAKES NO WARRANTY OF ANY KIND, EXPRESS OR IMPLIED, WITH REGARDS TO THIS DOCUMENT,
INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
(AND THEIR EQUIVALENTS UNDER THE LAWS OF ANY JURISDICTION).
Diodes Incorporated and its subsidiaries reserve the right to make modifications, enhancements, improvements, corrections or other changes
without further notice to this document and any product described herein. Diodes Incorporated does not assume any liability arising out of the
application or use of this document or any product described herein; neither does Diodes Incorporated convey any license under its patent or
trademark rights, nor the rights of others. Any Customer or user of this document or products described herein in such applications shall assume
all risks of such use and will agree to hold Diodes Incorporated and all the companies whose products are represented on Diodes Incorporated
website, harmless against all damages.
Diodes Incorporated does not warrant or accept any liability whatsoever in respect of any products purchased through unauthorized sales
channel.
Should Customers purchase or use Diodes Incorporated products for any unintended or unauthorized application, Customers shall indemnify and
hold Diodes Incorporated and its representatives harmless against all claims, damages, expenses, and attorney fees arising out of, directly or
indirectly, any claim of personal injury or death associated with such unintended or unauthorized application.
Products described herein may be covered by one or more United States, international or foreign patents pending. Product names and markings
noted herein may also be covered by one or more United States, international or foreign trademarks.
This document is written in English but may be translated into multiple languages for reference. Only the English version of this document is the
final and determinative format released by Diodes Incorporated.
LIFE SUPPORT
Diodes Incorporated 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 Diodes Incorporated. 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
labeling 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.
Customers represent that they have all necessary expertise in the safety and regulatory ramifications of their life support devices or systems, and
acknowledge and agree that they are solely responsible for all legal, regulatory and safety-related requirements concerning their products and
any use of Diodes Incorporated products in such safety-critical, life support devices or systems, notwithstanding any devices- or systems-related
information or support that may be provided by Diodes Incorporated. Further, Customers must fully indemnify Diodes Incorporated and its
representatives against any damages arising out of the use of Diodes Incorporated products in such safety-critical, life support devices or
systems.
Copyright © 2015, Diodes Incorporated
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