TLV431AFTA Diodes Zetex, TLV431AFTA Datasheet

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TLV431AFTA

Manufacturer Part Number
TLV431AFTA
Description
IC SHUNT REG 1.24V 1% SOT23-3
Manufacturer
Diodes Zetex
Datasheet

Specifications of TLV431AFTA

Reference Type
Shunt, Adjustable
Voltage - Output
1.24 ~ 18 V
Tolerance
±1%
Number Of Channels
1
Current - Cathode
55µA
Current - Output
15mA
Operating Temperature
-40°C ~ 125°C
Mounting Type
Surface Mount
Package / Case
SOT-23-3, TO-236-3, Micro3™, SSD3, SST3
Lead Free Status / RoHS Status
Lead free / RoHS Compliant
Voltage - Input
-
Temperature Coefficient
-
Current - Quiescent
-

Available stocks

Company
Part Number
Manufacturer
Quantity
Price
Part Number:
TLV431AFTA
Manufacturer:
DIODES/美台
Quantity:
20 000
Company:
Part Number:
TLV431AFTA
Quantity:
5 000
Secondary side
regulated rail
Primary side
TLV431
Document number: DS32088 Rev. 5 - 2
Features
Typical Application Circuit
Description
The TLV431 is a three terminal adjustable shunt regulator
offering excellent temperature stability and output current
handling capability up to 20mA. The output voltage may be
set to any chosen voltage between 1.24 and 18 volts by
selection of two external divider resistors.
The TLV431 can be used as a replacement for zener
diodes in many applications requiring an improvement in
zener performance.
The TLV431 is available in 2 grades with initial tolerances
of 1% and 0.5% for the A and B grades respectively.
controller
o
o
o
o
o
Low Voltage Operation V
Temperature range -40 to 125ºC
Reference Voltage Tolerance at 25°C
Typical temperature drift
80µA Minimum cathode current
0.25Ω Typical Output Impedance
Adjustable Output Voltage V
Lead Free Finish. RoHS Compliant with “Green”
Molding Compound (No Br, Sb)
Qualified to AEC-Q100
0.5%
1%
4 mV (0°C to 70°C)
6 mV (-40°C to 85°C)
11mV (-40°C to 125°C)
TLV431B
TLV431A
REF
REF
= 1.24V
to 18V
3.3V
www.diodes.com
1 of 14
Pin Assignments
‡ Pin should be left floating or connect to anode
1.24V COST EFFECTIVE SHUNT REGULATOR
CATHODE
CATHODE
CATHODE
Diodes Incorporated
N/C
N/C
REF
REF
A Product Line of
N/C
TLV431_H6 (SC70-6)
TLV431_E5 (SOT25)
TLV431_F (SOT23)
(Top View)
2
3
2
3
1
1
2
(Top View)
(Top View)
1
6 ANODE
5 NC
4
5
4
3
NC
ANODE
REF
ANODE
© Diodes Incorporated
TLV431
April 2011

Related parts for TLV431AFTA

TLV431AFTA Summary of contents

Page 1

Description The TLV431 is a three terminal adjustable shunt regulator offering excellent temperature stability and output current handling capability up to 20mA. The output voltage may be set to any chosen voltage between 1.24 and 18 volts by selection of ...

Page 2

Absolute Maximum Ratings Symbol V Cathode Voltage KA I Continuous Cathode Current KA I Reference Input Current Range REF V Input Supply Voltage (Relative to Ground) IN ESD Susceptibility HBM Human Body Model MM Machine Model CDM Charged Device Model ...

Page 3

Electrical Characteristics Electrical characteristics over recommended operating conditions, I Symbol Parameter V Reference Voltage REF Deviation of reference voltage V REF(dev) over full temperature range Ration of change in ΔV refernce voltage to REF ΔV the change in KA cathode ...

Page 4

Typical Characteristics TLV431 Document number: DS32088 Rev Product Line of Diodes Incorporated 56kΩ S1 10mA 10kΩ Test circuit for V REF www.diodes.com TLV431 O/P 75kΩ 100nF measurement April 2011 © Diodes ...

Page 5

Typical Characteristics (cont.) TLV431 Document number: DS32088 Rev Product Line of Diodes Incorporated www.diodes.com TLV431 April 2011 © Diodes Incorporated ...

Page 6

Typical Characteristics (cont.) TLV431 Document number: DS32088 Rev Product Line of Diodes Incorporated 470µF Test circuit for input noise voltage 6.8kΩ 10µF ~ 4.3kΩ Test circuit for phase shift and gain 100µF 100Ω ~ 50Ω Test ...

Page 7

Typical Characteristics (cont.) TLV431 Document number: DS32088 Rev Product Line of Diodes Incorporated Pulse Generator Test circuit for pulse response www.diodes.com TLV431 O/P April 2011 © Diodes Incorporated ...

Page 8

Application Information In a conventional shunt regulator application (Figure 1), an external series resistor (R voltage and the TLV431 determines the current that flows through the load (I 3 sinks or “shunts” to maintain a voltage ...

Page 9

Application Information (cont.) Printed circuit board layout considerations The TLV431 in the SOT25 package has the die attached to pin 2, which results in an electrical contact between pin 2 and pin 5. Therefore, pin 2 of the SOT25 package ...

Page 10

Application Information (cont.) Printed circuit board layout considerations (continued) Figure 5 adds current limit to the series regulator in Figure 4 using a second TLV431. For currents below the limit, the circuit works normally supplying the required load current at ...

Page 11

... Figure 7 is similar to Figure 6 with adjustability added. Note the addition of R3. This is only required for the AP1117 due to the fact that its ground or adjustment pin can only supply a few micro-Amps of current at best therefore needed to provide sufficient bias current for the TLV431. Ordering Information Tol. Orde Code Pack TLV431AE5TA SOT25 1% TLV431AFTA SOT23 TLV431AH6TA SC70-6 TLV431BE5TA SOT25 0.5% TLV431BFTA SOT23 TLV431BH6TA ...

Page 12

Package Outline Dimensions SOT23 Dimension Table SOT25 TLV431 Document number: DS32088 Rev Product Line of Diodes Incorporated SOT25 www.diodes.com TLV431 April 2011 © Diodes Incorporated ...

Page 13

Package Outline Dimensions SC70-6 TLV431 Document number: DS32088 Rev (cont www.diodes.com A Product Line of Diodes Incorporated TLV431 April 2011 © Diodes Incorporated ...

Page 14

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 ...

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