zht431 Zetex Semiconductors plc., zht431 Datasheet

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zht431

Manufacturer Part Number
zht431
Description
Zht431 - Adjustable Precision Zener Shunt Regulator
Manufacturer
Zetex Semiconductors plc.
Datasheet

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ZHT431
Adjustable precision Zener shunt regulator
Description
The ZHT431 is a three terminal adjustable
shunt regulator offering excellent temperature
stability and output current handling capability
up to 100mA. The device offers extended
operating temperature range working from -55
to +125°C. The output voltage may be set to
any chosen voltage between 2.5 and 20 volts
by selection of two external divider resistors.
Features
Ordering information
Issue 6 - July 2007
© Zetex Semiconductors plc 2007
Order reference
ZHT431C01L
ZHT431C01STOB
ZHT431C01STZ
ZHT431C02L
ZHT431C02STOB
ZHT431C02STZ
ZHT431F01TA
ZHT431F02TA
ZHT431G01TA
ZHT431G02TA
Surface mount SOT223 and SOT23
packages
2% and 1% tolerance
Maximum temperature coefficient
67 ppm/°C
Temperature compensated for operation
over the full temperature range
Programmable output voltage
50 A to 100mA current sink capability
Low output noise
Wide temperature range -55 to +125°C
Tolerance
(%)
1
1
1
2
2
2
1
2
1
2
Package Part mark
SOT223 ZHT43101 Released
SOT223 ZHT43102 Released
SOT23
SOT23
TO92
TO92
TO92
TO92
TO92
TO92
ZHT43101 Obsolete
ZHT43101 Obsolete
ZHT43101 Obsolete Concertina
ZHT43102 Obsolete
ZHT43102 Obsolete
ZHT43102 Obsolete Concertina
43C
43D
1
The devices can be used as a replacement for
zener diodes in many applications requiring an
improvement in zener performance.
Applications
Pinout information
GND
Series and shunt regulator
Voltage monitor
Over voltage / under voltage protection
Switch mode power supplies
Released
Released
Pinout - Top view
Status
SOT223
Reel size
(inches)
Loose
Loose
V
GND
V
12.5
12.5
REF
Z
7
7
7
7
GND
Pinout - Top view
Quantity
per reel
4000
1500
1500
4000
1500
1500
3000
3000
1000
1000
www.zetex.com
SOT23
V
V
12mm
12mm
width
Z
REF
8mm
8mm
Tape
-
-
-
-
-
-

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zht431 Summary of contents

Page 1

... ZHT431 Adjustable precision Zener shunt regulator Description The ZHT431 is a three terminal adjustable shunt regulator offering excellent temperature stability and output current handling capability up to 100mA. The device offers extended operating temperature range working from -55 to +125°C. The output voltage may be set to any chosen voltage between 2 ...

Page 2

... Cathode voltage Cathode current Issue 6 - July 2007 © Zetex Semiconductors plc 2007 V Z Gnd 20V Power dissipation (T 150mA (T -55 to 125°C SOT23 -55 to 150°C TO92 SOT223 Min. Max. V 20V REF 50µA 100mA 2 ZHT431 =25°C) amb = 150°C) jmax 330mW 780mW 2W www.zetex.com ...

Page 3

... Zetex Semiconductors plc 2007 Value Min. Typ. Max. 2% 2.45 2.50 2.55 1% 2.475 2.50 2.525 10 -1.85 -1.0 0.12 0. defined as the maximum variation of the reference DEV ) , is defined as ZHT431 amb Units Conditions V I =10mA (Fig.1 REF =10mA =full range (Fig1) amb -2.7 mV/V V from V ...

Page 4

... Typical characteristics Issue 6 - July 2007 © Zetex Semiconductors plc 2007 4 ZHT431 www.zetex.com ...

Page 5

... Test Circuit for Open Loop Voltage Gain Input Monitor Pulse Generator 1 25°C A Test Circuit for Pulse Response 150 Input µ V < V < 20 10mA, T ref Z Z Test Circuit for Stability Boundary Conditions 4-31 5 ZHT431 230 + - 220 10k = 25°C A www.zetex.com ...

Page 6

... Fig 1 - Test circuit for ref Issue 6 - July 2007 © Zetex Semiconductors plc 2007 Input ref V R2 ref Fig 2 - Test circuit for V > ref 6 ZHT431 Input I ZOFF Fig 3 - Test circuit for for Of † state current www.zetex.com ...

Page 7

... R2 R1 Vout Vref R2 Higher current shunt regulator V+ 30 0.01µF R1 Vref R2 R1 Vout Vref R2 Series regulator V+ R1B R1A Vref Vref R2A R2B R1B 1 + Vref Low limit = R2B R1A High limit = 1 + Vref R2A Over voltage / under voltage protection circuit 7 ZHT431 Vout Output www.zetex.com ...

Page 8

... Note: Controlling dimensions are in millimeters. Approximate dimensions are provided in inches Issue 6 - July 2007 © Zetex Semiconductors plc 2007 Millimeters Max. 4.95 0.51 3.94 2.67 1.40 15.49 2.41 1.52 0.56 4.95 6° 8 ZHT431 Inches Min. Max. 0.170 0.195 0.014 0.020 0.130 0.155 0.095 0.105 0.045 0.055 0.610 0.500 0.085 0.095 0.045 ...

Page 9

... Zetex Semiconductors plc 2007 Inches Dim. Min. Max. - 0.044 e1 0.0004 0.004 E 0.012 0.020 E1 0.003 0.008 L 0.110 0.120 L1 0.037 NOM - 9 ZHT431 Millimeters Inches Min. Max. Min. 1.90 NOM 0.075 NOM 2.10 2.64 0.083 1.20 1.40 0.047 0.25 0.60 0.0098 0.45 0.62 0.018 - - - www.zetex.com Max. 0.104 0.055 0.0236 0.024 ...

Page 10

... Issue 6 - July 2007 © Zetex Semiconductors plc 2007 Inches Dim. Min. Max. - 0.071 D 0.0008 0.004 e 0.0610 0.0649 e1 0.026 0.033 E 0.114 0.122 E1 0.009 0.013 L 10 ZHT431 Millimeters Inches Min. Max. Min. 6.30 6.70 0.248 2.30 BSC 0.0905 BSC 4.60 BSC 0.181 BSC 6.70 7.30 0.264 3.30 3.70 0.130 0.90 - 0.355 www.zetex.com Max. 0.264 ...

Page 11

... Issue 6 - July 2007 © Zetex Semiconductors plc 2007 Intentionally left blank 11 ZHT431 www.zetex.com ...

Page 12

... Zetex Semiconductors plc 3701-04 Metroplaza Tower 1 Zetex Technology Park, Chadderton Hing Fong Road, Kwai Fong Oldham, OL9 9LL Hong Kong United Kingdom Telephone: (852) 26100 611 Telephone: (44) 161 622 4444 Fax: (852) 24250 494 Fax: (44) 161 622 4446 asia.sales@zetex.com hq@zetex.com 12 ZHT431 www.zetex.com ...

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