TL431BQDBZR [NXP]
Adjustable precision shunt regulator; 可调式精密并联稳压器
| 型号： | TL431BQDBZR |
| 厂家： | 
NXP |
| 描述： | Adjustable precision shunt regulator |
| 文件： | 总23页 (文件大小：205K) |
| 中文： | 中文翻译 | 下载： | 下载PDF数据表文档文件 |
TL431 family
Adjustable precision shunt regulator
Rev. 02 — 20 January 2010
Product data sheet
1. General description
Three-terminal shunt regulator family with an output voltage range between Vref and 36 V,
to be set by two external resistors.
Table 1.
Product overview
Reference voltage Temperature range (Tamb
)
Pinning
tolerance (Vref
)
configuration
(see Table 5)
0 to 70 °C
−40 to 85 °C
−40 to 125 °C
2 %
TL431CDBZR
TL431IDBZR
TL431QDBZR normal pinning
TL431SDT
normal pinning
TL431MSDT
mirrored pinning
1 %
TL431ACDBZR TL431AIDBZR TL431AQDBZR normal pinning
TL431ASDT normal pinning
TL431AMSDT mirrored pinning
0.5 %
TL431BCDBZR TL431BIDBZR TL431BQDBZR normal pinning
TL431BSDT
normal pinning
TL431BMSDT mirrored pinning
2. Features
Programmable output voltage up to 36 V
Three different reference voltage tolerances:
Standard grade: 2 %
A-Grade: 1 %
B-Grade: 0.5 %
Typical temperature drift: 6 mV (in a range of 0 °C up to 70 °C)
Low output noise
Typical output impedance: 0.2 Ω
Sink current capability: 1 mA to 100 mA
AEC-Q100 qualified (grade 1)
3. Applications
Shunt regulator
Precision current limiter
Precision constant current sink
TL431 family
NXP Semiconductors
Adjustable precision shunt regulator
4. Quick reference data
Table 2.
Symbol
VKA
Quick reference data
Parameter
Conditions
Min
Vref
1
Typ
Max
36
Unit
V
cathode-anode voltage
cathode current
reference voltage
-
-
IK
100
mA
Vref
VKA = Vref;
IK = 10 mA
Standard-Grade (2 %)
A-Grade (1 %)
2440
2470
2483
2495
2495
2495
2550
2520
2507
mV
mV
mV
B-Grade (0.5 %)
5. Ordering information
Table 3.
Ordering information
Type number
Package
Name
-
Description
plastic surface-mounted package; 3 leads
Version
TL431CDBZR
TL431IDBZR
TL431QDBZR
TL431SDT
SOT23
TL431MSDT
TL431ACDBZR
TL431AIDBZR
TL431AQDBZR
TL431ASDT
TL431AMSDT
TL431BCDBZR
TL431BIDBZR
TL431BQDBZR
TL431BSDT
TL431BMSDT
TL431_FAM_2
© NXP B.V. 2010. All rights reserved.
Product data sheet
Rev. 02 — 20 January 2010
2 of 23
TL431 family
NXP Semiconductors
Adjustable precision shunt regulator
6. Marking
Table 4.
Marking codes
Type number
TL431CDBZR
TL431IDBZR
TL431QDBZR
TL431SDT
Marking code[1]
Type number
Marking code[1]
CA*
CB*
CC*
RM*
LR*
CD*
CE*
CF*
TL431ASDT
TL431AMSDT
TL431BCDBZR
TL431BIDBZR
TL431BQDBZR
TL431BSDT
TL431BMSDT
-
RL*
LQ*
CG*
CH*
CJ*
MA*
MB*
-
TL431MSDT
TL431ACDBZR
TL431AIDBZR
TL431AQDBZR
[1] * = -: made in Hong Kong
* = p: made in Hong Kong
* = t: made in Malaysia
* = W: made in China
7. Functional diagram
The TL431 family comprises a range of 3-terminal adjustable shunt regulators, with
specified thermal stability over applicable automotive and commercial temperature
ranges. The output voltage may be set to any value between Vref (approximately 2.5 V)
and 36 V with two external resistors (see Figure 8). These devices have a typical output
impedance of 0.2 Ω. Active output circuitry provides a very sharp turn-on characteristic,
making these devices excellent replacements for Zener diodes in many applications like
on-board regulation, adjustable power supplies and switching power supplies.
CATHODE
REF
V
ref
006aab569
ANODE
Fig 1. Functional diagram
TL431_FAM_2
© NXP B.V. 2010. All rights reserved.
Product data sheet
Rev. 02 — 20 January 2010
3 of 23
TL431 family
NXP Semiconductors
Adjustable precision shunt regulator
8. Pinning information
Table 5.
Pin
Pinning
Symbol
Description
Simplified outline
Graphic symbol
Normal pinning: All types except TL431AMSDT, TL431BMSDT and TL431MSDT
1
2
3
k
cathode
reference
anode
REF
3
REF
a
a
k
1
2
006aab355
Mirrored pinning: TL431AMSDT, TL431BMSDT and TL431MSDT
1
2
3
REF
reference
cathode
anode
REF
3
k
a
k
a
1
2
006aab355
9. Limiting values
Table 6.
Limiting values
In accordance with the Absolute Maximum Rating System (IEC 60134).
Symbol
VKA
IK
Parameter
Conditions
Min
Max
37
Unit
cathode-anode voltage
cathode current
-
V
−100
150
10
mA
mA
mW
mW
mW
°C
Iref
reference current
total power dissipation
−0.05
[1]
[2]
[3]
Ptot
Tamb ≤ 25 °C
-
-
-
-
350
580
950
150
Tj
junction temperature
ambient temperature
TL431XCDBZR
Tamb
0
+70
°C
°C
°C
TL431XIDBZR
−40
−40
+85
TL431XQDBZR
TL431XSDT
+125
Tstg
storage temperature
−65
+150
°C
[1] Device mounted on an FR4 Printed-Circuit Board (PCB), single-sided copper, tin-plated and standard
footprint.
[2] Device mounted on an FR4 PCB, single-sided copper, tin-plated, mounting pad for collector 1 cm2.
[3] Device mounted on a ceramic PCB, Al2O3, standard footprint.
TL431_FAM_2
© NXP B.V. 2010. All rights reserved.
Product data sheet
Rev. 02 — 20 January 2010
4 of 23
TL431 family
NXP Semiconductors
Adjustable precision shunt regulator
006aab570
1250
P
tot
(mW)
(1)
1000
750
500
250
0
(2)
(3)
−75
−25
25
75
125
175
(°C)
T
amb
(1) Ceramic PCB, Al2O3, standard footprint
(2) FR4 PCB, mounting pad for collector 1 cm2
(3) FR4 PCB, standard footprint
Fig 2. Power derating curves
Table 7. ESD maximum ratings
Tamb = 25 °C unless otherwise specified.
Symbol Parameter
Conditions
Min
Max Unit
VESD
electrostatic discharge voltage
MIL-STD-883
-
4
kV
(human body model)
10. Recommended operating conditions
Table 8.
Symbol
VKA
Operating conditions
Parameter
Conditions
Min
Vref
1
Max
Unit
V
cathode-anode voltage
cathode current
36
IK
100
mA
TL431_FAM_2
© NXP B.V. 2010. All rights reserved.
Product data sheet
Rev. 02 — 20 January 2010
5 of 23
TL431 family
NXP Semiconductors
Adjustable precision shunt regulator
11. Thermal characteristics
Table 9.
Symbol
Rth(j-a)
Thermal characteristics
Parameter
Conditions
Min
Typ
Max
360
216
132
50
Unit
K/W
K/W
K/W
K/W
[1]
[2]
[3]
[4]
thermal resistance from
junction to ambient
in free air
-
-
-
-
-
-
-
-
Rth(j-sp)
thermal resistance from
junction to solder point
[1] Device mounted on an FR4 PCB, single-sided copper, tin-plated and standard footprint.
[2] Device mounted on an FR4 PCB, single-sided copper, tin-plated, mounting pad for collector 1 cm2.
[3] Device mounted on a ceramic PCB, Al2O3, standard footprint.
[4] Soldering point at pin 3.
12. Characteristics
Table 10. Characteristics
Symbol Parameter
Standard-Grade (2 %): TL431CDBZR; TL431IDBZR; TL431QDBZR; TL431SDT; TL431MSDT
Conditions
Min
Typ
Max
Unit
Vref
reference voltage
reference voltage variation
TL431CDBZR
VKA = Vref; IK = 10 mA
VKA = Vref; IK = 10 mA
2440
2495
2550
mV
ΔVref
T
amb = 0 °C to 70 °C
-
-
6
16
34
mV
mV
TL431IDBZR
Tamb = −40 °C to 85 °C
Tamb = −40 °C to 125 °C
14
TL431QDBZR
TL431SDT
TL431MSDT
ΔVref/ΔVKA reference voltage variation
to cathode-anode voltage
variation ratio
IK = 10 mA
ΔVKA = 10 V to Vref
ΔVKA = 36 V to 10 V
-
-
-
−1.4
−1
2
−2.7
−2
4
mV/V
mV/V
μA
Iref
reference current
IK = 10 mA;
R1 = 10 kΩ; R2 = open
ΔIref
reference current variation
IK = 10 mA;
R1 = 10 kΩ; R2 = open
TL431CDBZR
TL431IDBZR
Tamb = 0 °C to 70 °C
-
-
0.4
0.8
1.2
2.5
μA
μA
Tamb = −40 °C to 85 °C
Tamb = −40 °C to 125 °C
TL431QDBZR
TL431SDT
TL431MSDT
IK(min)
Ioff
minimum cathode current
off-state current
VKA = Vref
-
-
-
0.4
0.1
0.2
1
mA
μA
Ω
VKA = 36 V; Vref = 0
1
ZKA
dynamic cathode-anode
impedance
IK = 1 mA to 100 mA;
VKA = Vref; f < 1 kHz
0.5
TL431_FAM_2
© NXP B.V. 2010. All rights reserved.
Product data sheet
Rev. 02 — 20 January 2010
6 of 23
TL431 family
NXP Semiconductors
Adjustable precision shunt regulator
Table 10. Characteristics …continued
Symbol
Parameter
Conditions
Min
Typ
Max
Unit
A-Grade (1 %): TL431ACDBZR; TL431AIDBZR; TL431AQDBZR; TL431ASDT; TL431AMSDT
Vref
reference voltage
reference voltage variation
TL431ACDBZR
VKA = Vref; IK = 10 mA
VKA = Vref; IK = 10 mA
Tamb = 0 °C to 70 °C
Tamb = −40 °C to 85 °C
Tamb = −40 °C to 125 °C
2470
2495
2520
mV
ΔVref
-
-
6
16
34
mV
mV
TL431AIDBZR
14
TL431AQDBZR
TL431ASDT
TL431AMSDT
ΔVref/ΔVKA reference voltage variation
to cathode-anode voltage
variation ratio
IK = 10 mA
ΔVKA = 10 V to Vref
ΔVKA = 36 V to 10 V
-
-
-
−1.4
−1
2
−2.7
−2
4
mV/V
mV/V
μA
Iref
reference current
IK = 10 mA;
R1 = 10 kΩ; R2 = open
ΔIref
reference current variation
IK = 10 mA;
R1 = 10 kΩ; R2 = open
TL431ACDBZR
TL431AIDBZR
Tamb = 0 °C to 70 °C
-
-
0.4
0.8
1.2
2.5
μA
μA
Tamb = −40 °C to 85 °C
Tamb = −40 °C to 125 °C
TL431AQDBZR
TL431ASDT
TL431AMSDT
IK(min)
minimum cathode current
TL431ACDBZR
VKA = Vref
Tamb = 0 °C to 70 °C
Tamb = −40 °C to 85 °C
Tamb = −40 °C to 125 °C
-
-
0.4
0.4
0.6
0.7
mA
mA
TL431AIDBZR
TL431AQDBZR
TL431ASDT
TL431AMSDT
Ioff
off-state current
VKA = 36 V; Vref = 0
-
-
0.1
0.2
0.5
0.5
μA
ZKA
dynamic cathode-anode
impedance
IK = 1 mA to 100 mA;
VKA = Vref; f < 1 kHz
Ω
B-Grade (0.5 %): TL431BCDBZR; TL431BIDBZR; TL431BQDBZR; TL431BSDT; TL431BMSDT
Vref
reference voltage
reference voltage variation
TL431BCDBZR
VKA = Vref; IK = 10 mA
VKA = Vref; IK = 10 mA
Tamb = 0 °C to 70 °C
Tamb = −40 °C to 85 °C
Tamb = −40 °C to 125 °C
2483
2495
2507
mV
ΔVref
-
-
6
16
34
mV
mV
TL431BIDBZR
14
TL431BQDBZR
TL431BSDT
TL431BMSDT
ΔVref/ΔVKA reference voltage variation
to cathode-anode voltage
variation ratio
IK = 10 mA
ΔVKA = 10 V to Vref
ΔVKA = 36 V to 10 V
-
-
-
−1.4
−1
2
−2.7
−2
4
mV/V
mV/V
μA
Iref
reference current
IK = 10 mA;
R1 = 10 kΩ; R2 = open
TL431_FAM_2
© NXP B.V. 2010. All rights reserved.
Product data sheet
Rev. 02 — 20 January 2010
7 of 23
TL431 family
NXP Semiconductors
Adjustable precision shunt regulator
Table 10. Characteristics …continued
Symbol
Parameter
Conditions
Min
Typ
Max
Unit
ΔIref
reference current variation
IK = 10 mA;
R1 = 10 kΩ; R2 = open
TL431BCDBZR
TL431BIDBZR
Tamb = 0 °C to 70 °C
-
-
0.4
0.8
1.2
2.5
μA
μA
Tamb = −40 °C to 85 °C
Tamb = −40 °C to 125 °C
TL431BQDBZR
TL431BSDT
TL431BMSDT
IK(min)
minimum cathode current
TL431BCDBZR
VKA = Vref
Tamb = 0 °C to 70 °C
Tamb = −40 °C to 85 °C
Tamb = −40 °C to 125 °C
-
-
0.4
0.4
0.6
0.7
mA
mA
TL431BIDBZR
TL431BQDBZR
TL431BSDT
TL431BMSDT
Ioff
off-state current
VKA = 36 V; Vref = 0
-
-
0.1
0.2
0.5
0.5
μA
ZKA
dynamic cathode-anode
impedance
IK = 1 mA to 100 mA;
VKA = Vref; f < 1 kHz
Ω
TL431_FAM_2
© NXP B.V. 2010. All rights reserved.
Product data sheet
Rev. 02 — 20 January 2010
8 of 23
TL431 family
NXP Semiconductors
Adjustable precision shunt regulator
006aab571
006aab572
2.60
150
V
ref
I
K
(V)
(mA)
2.56
100
2.52
2.48
2.44
2.40
50
0
−50
−100
−75
−25
25
75
125
(°C)
−2
−1
0
1
2
3
T
amb
V
KA
(V)
IK = 10 mA; VKA = Vref
VKA = Vref; Tamb = 25 °C
Fig 3. Reference voltage as a function of ambient
temperature; typical values
Fig 4. Cathode current as a function of
cathode-anode voltage; typical values
INPUT
V
KA
I
K
V
ref
GND
006aab573
IK = 10 mA; VKA = Vref
Fig 5. Test circuit to Figure 3 and Figure 4
TL431_FAM_2
© NXP B.V. 2010. All rights reserved.
Product data sheet
Rev. 02 — 20 January 2010
9 of 23
TL431 family
NXP Semiconductors
Adjustable precision shunt regulator
006aab574
006aab575
5.0
0
I
ref
(μA)
ΔV
ref
(mV)
4.0
−20
−40
−60
3.0
2.0
1.0
0.0
−75
−25
25
75
125
(°C)
0
10
20
30
40
T
amb
V
KA
(V)
IK = 10 mA; R1 = 10 kΩ; R2 = open
IK = 10 mA; Tamb = 25 °C
Fig 6. Reference current as a function of ambient
temperature; typical values
Fig 7. Reference voltage variation as a function of
cathode-anode voltage; typical values
INPUT
V
KA
I
K
R1
I
ref
R2
V
ref
GND
006aab576
R1
⎛
⎞
------
VKA = Vref × 1 +
+ Iref × R1
⎝
⎠
R2
Fig 8. Test circuit to Figure 6 and Figure 7
TL431_FAM_2
© NXP B.V. 2010. All rights reserved.
Product data sheet
Rev. 02 — 20 January 2010
10 of 23
TL431 family
NXP Semiconductors
Adjustable precision shunt regulator
006aab577
250
I
off
(nA)
200
150
100
50
0
−75
−25
25
75
125
(°C)
T
amb
VKA = 36 V; Vref = 0 V
Fig 9. Off-state current as a function of ambient temperature; typical values
INPUT
V
KA
I
off
GND
006aab578
VKA = 36 V; Vref = 0 V
Fig 10. Off-state current as a function of ambient temperature; test circuit
TL431_FAM_2
© NXP B.V. 2010. All rights reserved.
Product data sheet
Rev. 02 — 20 January 2010
11 of 23
TL431 family
NXP Semiconductors
Adjustable precision shunt regulator
006aab579
006aab580
6
6
(1)
(1)
V ; V
(V)
V ; V
in out
(V)
in out
4
2
0
4
2
0
(2)
(2)
−1
1
3
5
7
−1
1
3
5
7
t (μs)
t (μs)
Tamb = 25 °C
Tamb = 25 °C
(1) Input
(1) Input
(2) Output
(2) Output
Fig 11. All types except TL431XSDT:
Fig 12. TL431XSDT:
Input voltage and output voltage as a function
of time; typical values
Input voltage and output voltage as a function
of time; typical values
220 Ω
V
KA
PULSE
GENERATOR
f = 100 kHz
50 Ω
GND
006aab581
Tamb = 25 °C
Fig 13. Test circuit to Figure 11 and Figure 12
TL431_FAM_2
© NXP B.V. 2010. All rights reserved.
Product data sheet
Rev. 02 — 20 January 2010
12 of 23
TL431 family
NXP Semiconductors
Adjustable precision shunt regulator
006aab583
006aab582
60
60
A
A
v
v
(dB)
(dB)
40
40
20
20
0
0
2
3
4
2
3
4
1
10
10
10
10
1
10
10
10
10
f (kHz)
f (kHz)
IK = 10 mA; Tamb = 25 °C
IK = 10 mA; Tamb = 25 °C
Fig 14. All types except TL431XSDT:
Fig 15. TL431XSDT:
Voltage amplification as a function of
frequency; typical values
Voltage amplification as a function of
frequency; typical values
V
KA
15 kΩ
I
K
232 Ω
9 pF
8.25 kΩ
GND
006aab584
IK = 10 mA; Tamb = 25 °C
Fig 16. Test circuit to Figure 14 and Figure 15
TL431_FAM_2
© NXP B.V. 2010. All rights reserved.
Product data sheet
Rev. 02 — 20 January 2010
13 of 23
TL431 family
NXP Semiconductors
Adjustable precision shunt regulator
006aab585
006aab586
2
2
10
10
Z
KA
Z
KA
(Ω)
(Ω)
10
10
1
1
−1
−1
10
10
2
3
4
2
3
4
1
10
10
10
10
1
10
10
10
10
f (kHz)
f (kHz)
IK = 10 mA; Tamb = 25 °C
IK = 10 mA; Tamb = 25 °C
Fig 17. All types except TL431XSDT:
Fig 18. TL431XSDT:
Dynamic cathode-anode impedance as a
function of frequency; typical values
Dynamic cathode-anode impedance as a
function of frequency; typical values
V
KA
1 kΩ
I
K
50 Ω
GND
006aab587
IK = 10 mA; Tamb = 25 °C
Fig 19. Test circuit to Figure 17 and Figure 18
TL431_FAM_2
© NXP B.V. 2010. All rights reserved.
Product data sheet
Rev. 02 — 20 January 2010
14 of 23
TL431 family
NXP Semiconductors
Adjustable precision shunt regulator
006aab588
100
I
K
(mA)
80
(1)
(1)
60
40
20
0
Stable
Oscillation
Stable
2
3
4
1
10
10
10
10
C
L
(nF)
Tamb = 25 °C
(1) VKA = Vref
VKA = 5 V: no oscillation
VKA = 10 V: no oscillation
VKA = 15 V: no oscillation
Fig 20. All types except TL431XSDT: Cathode current as a function of load capacitance; typical values
150 Ω
I
K
I
K
R1 = 10 kΩ
150 Ω
C
C
L
L
V
BATT
V
BATT
R2
GND
GND
006aab589
006aab590
VKA = Vref
V
KA > 5 V: stable operation
Tamb = 25 °C
Tamb = 25 °C
Fig 21. Test circuit (1) to Figure 20
Fig 22. Test circuit (2) to Figure 20
TL431_FAM_2
© NXP B.V. 2010. All rights reserved.
Product data sheet
Rev. 02 — 20 January 2010
15 of 23
TL431 family
NXP Semiconductors
Adjustable precision shunt regulator
006aab591
100
I
K
(mA)
80
(1)
(1)
(2)
(2)
60
40
20
0
Stable
Oscillation
Stable
−1
2
3
4
10
1
10
10
10
10
C
(nF)
L
Tamb = 25 °C
(1) VKA = Vref
(2) VKA = 5 V
VKA = 10 V: no oscillation
VKA = 15 V: no oscillation
Fig 23. TL431XSDT: Cathode current as a function of load capacitance; typical values
150 Ω
I
K
I
K
R1 = 10 kΩ
150 Ω
C
C
L
L
V
BATT
V
BATT
R2
GND
GND
006aab589
006aab590
VKA = Vref
VKA = 5 V
Tamb = 25 °C
VKA > 10 V: stable operation
Tamb = 25 °C
Fig 24. Test circuit (1) to Figure 23
Fig 25. Test circuit (2) to Figure 23
TL431_FAM_2
© NXP B.V. 2010. All rights reserved.
Product data sheet
Rev. 02 — 20 January 2010
16 of 23
TL431 family
NXP Semiconductors
Adjustable precision shunt regulator
13. Application information
V+
V
OUT
R1
R2
006aab592
R1
R2
⎛
⎝
⎞
⎠
------
VOUT
=
1 +
× Vref
Fig 26. Shunt regulator
V+
V
OUT
R1
R2
006aab593
R1
⎛
⎝
⎞
------
× Vref ; VOUT(min) = Vref + Vbe
VOUT
=
1 +
⎠
R2
Fig 27. Series pass regulator
V+
V
OUT
V
IN
006aab594
Vth = Vref
VIN < Vref ⇒ VOUT > 0
VIN > Vref ⇒ VOUT ≅ 2V
Fig 28. Single-supply comparator with temperature-compensated threshold
TL431_FAM_2
© NXP B.V. 2010. All rights reserved.
Product data sheet
Rev. 02 — 20 January 2010
17 of 23
TL431 family
NXP Semiconductors
Adjustable precision shunt regulator
R
CL
V+
I
OUT
006aab595
Vref
---------
RCL
IOUT
=
Fig 29. Constant current source
V+
V
OUT
R1
R2
006aab596
R1
⎛
⎝
⎞
------
VOUT
=
1 +
× Vref
⎠
R2
Fig 30. High-current shunt regulator
I
V+
SINK
R
S
006aab597
Vref
---------
RS
ISINK
=
Fig 31. Constant current sink
14. Test information
14.1 Quality information
This product has been qualified in accordance with the Automotive Electronics Council
(AEC) standard Q100 - Failure mechanism based stress test qualification for integrated
circuits, and is suitable for use in automotive applications.
TL431_FAM_2
© NXP B.V. 2010. All rights reserved.
Product data sheet
Rev. 02 — 20 January 2010
18 of 23
TL431 family
NXP Semiconductors
Adjustable precision shunt regulator
15. Package outline
3.0
2.8
1.1
0.9
3
0.45
0.15
2.5 1.4
2.1 1.2
1
2
0.48
0.38
0.15
0.09
1.9
Dimensions in mm
04-11-04
Fig 32. Package outline SOT23 (TO-236AB)
16. Packing information
Table 11. Packing methods
The indicated -xxx are the last three digits of the 12NC ordering code.[1]
Type number
Package Description
Packing quantity
3000
10000
TL431CDBZR
TL431IDBZR
TL431QDBZR
TL431SDT
SOT23
4 mm pitch, 8 mm tape and reel
-215
-235
TL431MSDT
TL431ACDBZR
TL431AIDBZR
TL431AQDBZR
TL431ASDT
TL431AMSDT
TL431BCDBZR
TL431BIDBZR
TL431BQDBZR
TL431BSDT
TL431BMSDT
[1] For further information and the availability of packing methods, see Section 20.
TL431_FAM_2
© NXP B.V. 2010. All rights reserved.
Product data sheet
Rev. 02 — 20 January 2010
19 of 23
TL431 family
NXP Semiconductors
Adjustable precision shunt regulator
17. Soldering
3.3
2.9
1.9
solder lands
solder resist
2
3
1.7
solder paste
occupied area
0.6
(3×)
0.7
(3×)
Dimensions in mm
0.5
(3×)
0.6
(3×)
1
sot023_fr
Fig 33. Reflow soldering footprint SOT23 (TO-236AB)
2.2
1.2
(2×)
1.4
(2×)
solder lands
solder resist
occupied area
2.6
4.6
Dimensions in mm
1.4
preferred transport direction during soldering
2.8
4.5
sot023_fw
Fig 34. Wave soldering footprint SOT23 (TO-236AB)
TL431_FAM_2
© NXP B.V. 2010. All rights reserved.
Product data sheet
Rev. 02 — 20 January 2010
20 of 23
TL431 family
NXP Semiconductors
Adjustable precision shunt regulator
18. Revision history
Table 12. Revision history
Document ID
TL431_FAM_2
Modifications:
Release date
20100120
Data sheet status
Change notice
Supersedes
Product data sheet
-
TL431_FAM_1
• Type numbers TL431BSDT and TL431BMSDT added
• Section 7 “Functional diagram”: figure reference updated
TL431_FAM_1
20090806
Product data sheet
-
-
TL431_FAM_2
© NXP B.V. 2010. All rights reserved.
Product data sheet
Rev. 02 — 20 January 2010
21 of 23
TL431 family
NXP Semiconductors
Adjustable precision shunt regulator
19. Legal information
19.1 Data sheet status
Document status[1][2]
Product status[3]
Development
Definition
Objective [short] data sheet
This document contains data from the objective specification for product development.
This document contains data from the preliminary specification.
This document contains the product specification.
Preliminary [short] data sheet Qualification
Product [short] data sheet Production
[1]
[2]
[3]
Please consult the most recently issued document before initiating or completing a design.
The term ‘short data sheet’ is explained in section “Definitions”.
The product status of device(s) described in this document may have changed since this document was published and may differ in case of multiple devices. The latest product status
information is available on the Internet at URL http://www.nxp.com.
damage. NXP Semiconductors accepts no liability for inclusion and/or use of
NXP Semiconductors products in such equipment or applications and
therefore such inclusion and/or use is at the customer’s own risk.
19.2 Definitions
Draft — The document is a draft version only. The content is still under
internal review and subject to formal approval, which may result in
modifications or additions. NXP Semiconductors does not give any
representations or warranties as to the accuracy or completeness of
information included herein and shall have no liability for the consequences of
use of such information.
Applications — Applications that are described herein for any of these
products are for illustrative purposes only. NXP Semiconductors makes no
representation or warranty that such applications will be suitable for the
specified use without further testing or modification.
Limiting values — Stress above one or more limiting values (as defined in
the Absolute Maximum Ratings System of IEC 60134) may cause permanent
damage to the device. Limiting values are stress ratings only and operation of
the device at these or any other conditions above those given in the
Characteristics sections of this document is not implied. Exposure to limiting
values for extended periods may affect device reliability.
Short data sheet — A short data sheet is an extract from a full data sheet
with the same product type number(s) and title. A short data sheet is intended
for quick reference only and should not be relied upon to contain detailed and
full information. For detailed and full information see the relevant full data
sheet, which is available on request via the local NXP Semiconductors sales
office. In case of any inconsistency or conflict with the short data sheet, the
full data sheet shall prevail.
Terms and conditions of sale — NXP Semiconductors products are sold
subject to the general terms and conditions of commercial sale, as published
at http://www.nxp.com/profile/terms, including those pertaining to warranty,
intellectual property rights infringement and limitation of liability, unless
explicitly otherwise agreed to in writing by NXP Semiconductors. In case of
any inconsistency or conflict between information in this document and such
terms and conditions, the latter will prevail.
19.3 Disclaimers
General — Information in this document is believed to be accurate and
reliable. However, NXP Semiconductors does not give any representations or
warranties, expressed or implied, as to the accuracy or completeness of such
information and shall have no liability for the consequences of use of such
information.
No offer to sell or license — Nothing in this document may be interpreted or
construed as an offer to sell products that is open for acceptance or the grant,
conveyance or implication of any license under any copyrights, patents or
other industrial or intellectual property rights.
Right to make changes — NXP Semiconductors reserves the right to make
changes to information published in this document, including without
limitation specifications and product descriptions, at any time and without
notice. This document supersedes and replaces all information supplied prior
to the publication hereof.
Export control — This document as well as the item(s) described herein
may be subject to export control regulations. Export might require a prior
authorization from national authorities.
Quick reference data — The Quick reference data is an extract of the
product data given in the Limiting values and Characteristics sections of this
document, and as such is not complete, exhaustive or legally binding.
Suitability for use — NXP Semiconductors products are not designed,
authorized or warranted to be suitable for use in medical, military, aircraft,
space or life support equipment, nor in applications where failure or
malfunction of an NXP Semiconductors product can reasonably be expected
to result in personal injury, death or severe property or environmental
19.4 Trademarks
Notice: All referenced brands, product names, service names and trademarks
are the property of their respective owners.
20. Contact information
For more information, please visit: http://www.nxp.com
For sales office addresses, please send an email to: salesaddresses@nxp.com
TL431_FAM_2
© NXP B.V. 2010. All rights reserved.
Product data sheet
Rev. 02 — 20 January 2010
22 of 23
TL431 family
NXP Semiconductors
Adjustable precision shunt regulator
21. Contents
1
General description. . . . . . . . . . . . . . . . . . . . . . 1
2
Features . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1
Applications . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1
Quick reference data . . . . . . . . . . . . . . . . . . . . . 2
Ordering information. . . . . . . . . . . . . . . . . . . . . 2
Marking. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3
Functional diagram . . . . . . . . . . . . . . . . . . . . . . 3
Pinning information. . . . . . . . . . . . . . . . . . . . . . 4
Limiting values. . . . . . . . . . . . . . . . . . . . . . . . . . 4
Recommended operating conditions. . . . . . . . 5
Thermal characteristics . . . . . . . . . . . . . . . . . . 6
Characteristics. . . . . . . . . . . . . . . . . . . . . . . . . . 6
Application information. . . . . . . . . . . . . . . . . . 17
Test information. . . . . . . . . . . . . . . . . . . . . . . . 18
Quality information . . . . . . . . . . . . . . . . . . . . . 18
Package outline . . . . . . . . . . . . . . . . . . . . . . . . 19
Packing information . . . . . . . . . . . . . . . . . . . . 19
Soldering . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 20
Revision history. . . . . . . . . . . . . . . . . . . . . . . . 21
3
4
5
6
7
8
9
10
11
12
13
14
14.1
15
16
17
18
19
Legal information. . . . . . . . . . . . . . . . . . . . . . . 22
Data sheet status . . . . . . . . . . . . . . . . . . . . . . 22
Definitions. . . . . . . . . . . . . . . . . . . . . . . . . . . . 22
Disclaimers. . . . . . . . . . . . . . . . . . . . . . . . . . . 22
Trademarks. . . . . . . . . . . . . . . . . . . . . . . . . . . 22
19.1
19.2
19.3
19.4
20
21
Contact information. . . . . . . . . . . . . . . . . . . . . 22
Contents . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 23
Please be aware that important notices concerning this document and the product(s)
described herein, have been included in section ‘Legal information’.
© NXP B.V. 2010.
All rights reserved.
For more information, please visit: http://www.nxp.com
For sales office addresses, please send an email to: salesaddresses@nxp.com
Date of release: 20 January 2010
Document identifier: TL431_FAM_2
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