OMO ElectronicOMO Electronic
Expand menu
Hello, Sign inMy Account
0 Cart

TL431BW5-7

P1-P3P4-P6P7-P9P10-P12P13-P14
TL431/TL432
ADJUSTABLE PRECISION SHUNT REGULATOR
TL431 *SO-8 is a future package
Document number: DS35044 Rev. 6 - 2
1 of 14
www.diodes.com
April 2012
© Diodes Incorporated
Description
The TL431 and TL432 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 36 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. Diodes’ TL431 has the same electrical
specifications as the industry standard ‘431 and is available
in 2 grades with initial tolerances of 1% and 0.5% for the
A and B grades respectively.
Features
• Temperature range -40 to +125ºC
• Reference Voltage Tolerance at 25°C
• TL431A: 2.495V ± 1.0%
• TL431B: 2.495V ± 0.5%
• Low Output Noise
• 0.2Ω Typical Output Impedance
• Sink Current Capability: 1mA to 100mA
• Adjustable Output Voltage: V
REF
to 36V
• All devices are:
• Totally Lead-Free & Fully RoHS compliant
(Notes 1 & 2)
• Halogen and Antimony Free. “Green” Device
(Note 3)
Applications
• Opto-Coupler Linearisers
• Shunt Regulators
• Improved Zener
• Variable Reference
Pin Assignments
TL431
ANODE
REF
CATHODE
1
3
2
(Top View)
SOT23
ANODE
REF
CATHODE
NC
Leave floating or
connect to pin 5
2
3
4
5
(Top View)
SOT2
5
ANODE
ANODE
REF
NC
ANODE
ANODE
NC
CATHODE
1
2
3
4
8
7
6
5
(Top View)
SO-8
TL432
ANODE
REF
CATHODE
1
3
2
(Top View)
SOT2
3
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.
SO-8 is a future product
TL431/TL432
ADJUSTABLE PRECISION SHUNT REGULATOR
TL431 *SO-8 is a future package
Document number: DS35044 Rev. 6 - 2
2 of 14
www.diodes.com
April 2012
© Diodes Incorporated
Absolute Maximum Ratings (Note 4)
Symbol Parameter Rating Unit
V
KA
Cathode Voltage 40 V
I
KA
Continuous Cathode Current 150 mA
I
REF
Reference Input Current -0.050 to +10 mA
T
J
Operating Junction Temperature +150
°
C
T
ST
Storage Temperature -55 to +150
°
C
P
D
Power Dissipation (Notes 5, 6)
SOT23 330
mW
SOT25 500
SO-8* 700
Notes: 4. 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.
5. T
J
,
MAX
=150°C.
6. Ratings apply to ambient temperature at 25°C.
Recommended Operating Conditions
Symbol Parameter Min Max Unit
V
KA
Cathode Voltage
V
REF
36 V
I
KA
Cathode Current 1 100 mA
T
A
Operating Ambient Temperature -40 +125 °C
TL431/TL432
ADJUSTABLE PRECISION SHUNT REGULATOR
TL431 *SO-8 is a future package
Document number: DS35044 Rev. 6 - 2
3 of 14
www.diodes.com
April 2012
© Diodes Incorporated
Electrical Characteristics (T
A
= +25°C, unless otherwise noted)
Symbol Parameter Test Conditions Min Typ. Max Unit
V
REF
Reference voltage
V
KA
= V
REF
,
I
KA
= 10mA
TL431A 2.470 2.495 2.520
V
TL431B 2.482 2.495 2.507
V
DEV
Deviation of reference voltage over
full temperature range (Note 5)
V
KA
= V
REF
,
I
KA
= 10mA
T
A
= 0 to 70
o
C
6 16
mV
T
A
= -40 to +85
o
C
14 34
T
A
= -40 to +125
o
C
14 34
ΔV
REF
ΔV
KA
Ratio of the change in reference
voltage to the change in cathode
voltage
I
KA
= 10mA
V
KA
= 10V to V
REF
-1.4 -2.7
mV/V
V
KA
= 36V to 10V
-1 -2
I
REF
Reference input current
I
KA
= 10mA, R1 = 10KΩ, R2 = ∞
1 4 µA
ΔI
REF
I
REF
deviation over full temperature
range (Note 7)
I
KA
= 10mA,
R1 = 10KΩ,
R2 = ∞
T
A
= 0 to 70
o
C
0.8 1.2
µA
T
A
= -40 to +85
o
C
0.8 2.5
T
A
= -40 to +125
o
C
0.8 2.5
I
KA(MIN)
Minimum cathode current for
regulation
V
KA
= V
REF
0.4 0.7 mA
I
KA(OFF)
Off-state current
V
KA
= 36V, V
REF
= 0V
0.05 0.5 µA
|Z
KA
|
Dynamic output impedance (Note 8)
V
KA
= V
REF,
f = 0Hz
0.2 0.5 Ω
θ
JA
Thermal Resistance Junction to
Ambient
SOT23 380
o
C/W SOT25 250
SO-8* 70
Notes: 7. Deviation of V
DEV
, and ΔI
REF
are defined as the maximum variation of the values over the full temperature range.
The average temperature coefficient of the reference input voltage αV
REF
is defined as:
Where:
T2 – T1 = full temperature change.
αV
REF
can be positive or negative depending on whether the slope is
positive or negative.
Notes: 8. The dynamic output impedance, R
Z
, is defined as:
When the device is programmed with two external resistors R1 and R2, the dynamic output
impedance of the overall circuit, is defined as:
=
T2 – T1
αV
REF
V
DEV
V
REF
@ 25ºC
X 10
6
ppm/ºC
=
T2 – T1
αV
REF
V
DEV
V
REF
@ 25ºC
X 10
6
ppm/ºC
Vmax
Vmin
T1 T2
V
DEV
= Vmax - Vmin
Temperature
Vmax
Vmin
T1 T2
V
DEV
= Vmax - Vmin
Temperature
=
Z
KA
ΔV
KA
ΔI
KA
=
Z
KA
ΔV
KA
ΔI
KA
=
Z’
ΔV
ΔI
Z
KA
1 +
R1
R2
≈
=
Z’
ΔV
ΔI
=
Z’
ΔV
ΔI
Z
KA
1 +
R1
R2
Z
KA
1 +
R1
R2
≈
P1-P3P4-P6P7-P9P10-P12P13-P14

TL431BW5-7

Mfr. #:
Buy TL431BW5-7
Manufacturer:
Diodes Incorporated
Description:
Voltage References ADJ Shunt Reg 100mA 40V Vref 36V 150mA
Lifecycle:
New from this manufacturer.
Delivery:
DHL FedEx Ups TNT EMS
Payment:
T/T Paypal Visa MoneyGram Western Union

Products related to this Datasheet