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ZTL431 데이터시트 PDF




Zetex Semiconductors에서 제조한 전자 부품 ZTL431은 전자 산업 및 응용 분야에서
광범위하게 사용되는 반도체 소자입니다.


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부품번호 ZTL431 기능
기능 (ZTL431 / ZTL432) Cost effective adjustable precision shunt regulator
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ZTL431 데이터시트, 핀배열, 회로
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
www.DataSheet4U.com
• Temperature range ................ -40 to 125°C
• Reference voltage tolerance at 25°C
• 0.5% ..................................... B grade
• 1% ......................................... A grade
• Low output noise
• 0.2 typical output impedance
• Sink current capability ...... 1mA to 100mA
• Adjustable output voltage ...... VREF to 20V
• Opto-coupler linearization
• Linear regulators
• Improved zener
• Variable reference
Pin connections
ZTL431_F SOT23
ZTL431_FF SOT23F
(top view)
ZTL432_F SOT23
ZTL432_FF SOT23F
(top view)
ZTL431_H6 SC70-6
(top view)
Cathode 1
Ref 1
Cathode 1
6 Anode
3 Anode
3 Anode
*2
5*
Ref 2
Cathode 2
REF 3
4 NC
Issue 9 - June 2007
© Zetex Semiconductors plc 2007
1
www.zetex.com




ZTL431 pdf, 반도체, 판매, 대치품
Typical characteristics
ZTL431, ZTL432
IKA = 10mA
VREF = VKA
Issue 9 - June 2007
© Zetex Semiconductors plc 2007
125
4 www.zetex.com

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ZTL431 전자부품, 판매, 대치품
DC test circuits
IL VKA
IREF
IKA
VREF
ZTL431, ZTL432
IL
IREF
VKA
IKA
VREF
VKA
IKA(OFF)
Figure 1 Test circuit for
VKA = VREF
Figure 2 Test circuit for
VKA > VREF
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)
=
V-----D---E---V-----×-----1---,---0---0----0---,---0---0----0-
VREF(T1 T2)
The dynamic output impedance, Rz, is
defined as:
Rz
=
Δ-----V----z
ΔIz
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 = Rz⎝⎛1 + RR-----12--⎠⎞
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 9 - June 2007
© Zetex Semiconductors plc 2007
7
Figure 3 Test circuit for
off state current
www.zetex.com

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