TLV431CDCKT [TI]
IC,VOLT REGULATOR,ADJUSTABLE,+1.24 TO +6V,BIPOLAR,TSSOP,6PIN,PLASTIC;
| 型号： | TLV431CDCKT |
| 厂家： | 
TEXAS INSTRUMENTS |
| 描述： | IC,VOLT REGULATOR,ADJUSTABLE,+1.24 TO +6V,BIPOLAR,TSSOP,6PIN,PLASTIC |
| 文件： | 总25页 (文件大小：507K) |
| 中文： | 中文翻译 | 下载： | 下载PDF数据表文档文件 |
ꢀ ꢁꢂꢃ ꢄ ꢅ ꢆ ꢀ ꢁꢂꢃ ꢄ ꢅ ꢇꢆ ꢀꢁꢂ ꢃꢄ ꢅꢈ
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SLVS139J − JULY 1996 − REVISED AUGUST 2004
D
D
Low-Voltage Operation . . . Down to 1.24 V
D
D
D
D
Adjustable Output Voltage, V = V
to 6 V
O
REF
Reference Voltage Tolerances are:
0.5% for TLV431B,
1% for TLV431A, and
1.5% for TLV431
Low Operational Cathode Current . . . 80 µA Typ
0.25 Ω Typical Output Impedance
−405C to 1255C Specifications
DBZ (SOT23-3) PACKAGE
D (SOIC) PACKAGE
(TOP VIEW)
DBV (SOT23-5) PACKAGE
(TOP VIEW)
(TOP VIEW)
REF
1
2
3
4
8
7
6
5
CATHODE
REF
NC
NC
CATHODE
ANODE
REF
1
2
1
2
3
5
4
ANODE
ANODE
NC
ANODE
ANODE
NC
ANODE
3
CATHODE
NC - No internal connection
PK (SOT-89) PACKAGE
(TOP VIEW)
LP (TO-92/T0-226) PACKAGE
(TOP VIEW)
DCK (SC-70) PACKAGE
(TOP VIEW)
CATHODE
ANODE
REF
CATHODE
NC
ANODE
NC
NC
1
2
3
6
5
4
CATHODE
ANODE
REF
REF
description/ordering information
The TLV431, TLV431A, and TLV431B are low-voltage 3-terminal adjustable voltage references with specified
thermal stability over applicable industrial and commercial temperature ranges. Output voltage can be set to
any value between V
(1.24 V) and 6 V with two external resistors (see Figure 2). These devices operate from
REF
a lower voltage (1.24 V) than the widely used TL431 and TL1431 shunt-regulator references.
When used with an optocoupler, the TLV431, TLV431A, and TLV431B are ideal voltage references in isolated
feedback circuits for 3-V to 3.3-V switching-mode power supplies. These devices have a typical output
impedance of 0.25 Ω. Active output circuitry provides a very sharp turn-on characteristic, making the TLV431,
TLV431A, and TLV431B excellent replacements for low-voltage Zener diodes in many applications, including
on-board regulation and adjustable power supplies.
Please be aware that an important notice concerning availability, standard warranty, and use in critical applications of
Texas Instruments semiconductor products and disclaimers thereto appears at the end of this data sheet.
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Copyright 2004, Texas Instruments Incorporated
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1
POST OFFICE BOX 655303 • DALLAS, TEXAS 75265
ꢀ ꢁꢂ ꢃ ꢄꢅ ꢆ ꢀ ꢁꢂꢃ ꢄ ꢅꢇꢆ ꢀꢁꢂ ꢃ ꢄꢅ ꢈ
ꢁ ꢉꢊꢋꢂ ꢉꢁꢀꢇ ꢌꢍ ꢇꢎ ꢏ ꢐꢑꢀꢇꢈ ꢁꢍ ꢒ ꢓꢍ ꢔꢕ ꢑꢕ ꢉ ꢖ ꢑꢗꢐ ꢖꢀ ꢓꢍ ꢌꢐꢁ ꢇꢀꢉ ꢓꢑ
SLVS139J − JULY 1996 − REVISED AUGUST 2004
description/ordering information (continued)
ORDERING INFORMATION
V
ORDERABLE
PART NUMBER
TOP-SIDE
MARKING
REF
†
PACKAGE
T
J
TOLERANCE
Reel of 3000
Reel of 250
Reel of 3000
Reel of 250
Reel of 3000
Reel of 250
Reel of 1000
Bulk of 1000
Reel of 2000
TLV431BCDCKR
TLV431BCDCKT
TLV431BCDBVR
TLV431BCDBVT
TLV431BCDBZR
TLV431BCDBZT
TLV431BCPK
SC-70 (DCK)
PREVIEW
PREVIEW
SOT-23-5 (DBV)
0.5%
SOT-23-3 (DBZ)
SOT-89 (PK)
TO-92 (LP)
PREVIEW
PREVIEW
PREVIEW
TLV431BCLP
TLV431BCLPR
Reel of 3000
Reel of 250
Reel of 3000
Reel of 250
Reel of 3000
Reel of 1000
Bulk of 1000
Reel of 2000
Reel of 3000
Reel of 250
Reel of 3000
Reel of 250
Reel of 3000
Reel of 1000
Bulk of 1000
Reel of 2000
TLV431ACDCKR
TLV431ACDCKT
TLV431ACDBVR
TLV431ACDBVT
TLV431ACDBZR
TLV431ACPK
TLV431ACLP
SC-70 (DCK)
PREVIEW
‡ §
VAHC , YAC_
SOT-23-5 (DBV)
0°C to 70°C
1%
§
YAC_
SOT-23-3 (DBZ)
SOT-89 (PK)
PREVIEW
TO-92 (LP)
V431AC
TLV431ACLPR
TLV431CDCKR
TLV431CDCKT
TLV431CDBVR
TLV431CDBVT
TLV431CDBZR
TLV431CPK
PREVIEW
SC-70 (DCK)
SOT-23-5 (DBV)
‡
§
VAII , Y3I_
1.5%
§
Y3I_
SOT-23-3 (DBZ)
SOT-89 (PK)
PREVIEW
TLV431CLP
TO-92 (LP)
V431C
TLV431CLPR
†
Package drawings, standard packing quantities, thermal data, symbolization, and PCB design guidelines are available at
www.ti.com/sc/package.
Possible top-side marking on units prior to August 16, 2004.
‡
§
DBV/DBZ: The actual top-side marking has one additional character that designates the assembly/test site.
2
POST OFFICE BOX 655303 • DALLAS, TEXAS 75265
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ꢁꢉ ꢊꢋꢂ ꢉꢁꢀꢇꢌ ꢍ ꢇꢎꢏ ꢐꢑ ꢀꢇꢈꢁ ꢍ ꢒꢓ ꢍꢔꢕꢑ ꢕꢉ ꢖ ꢑꢗꢐ ꢖꢀ ꢓꢍ ꢌ ꢐꢁ ꢇꢀꢉ ꢓꢑ
SLVS139J − JULY 1996 − REVISED AUGUST 2004
description/ordering information (continued)
ORDERING INFORMATION (continued)
V
ORDERABLE
TOP-SIDE
MARKING
REF
†
PACKAGE
T
J
TOLERANCE
PART NUMBER
TLV431BIDCKR
TLV431BIDCKT
TLV431BIDBVR
TLV431BIDBVT
TLV431BIDBZR
TLV431BIDBZT
TLV431BIPK
Reel of 3000
Reel of 250
Reel of 3000
Reel of 250
Reel of 3000
Reel of 250
Reel of 1000
Bulk of 1000
Reel of 2000
PREVIEW
SC-70 (DCK)
PREVIEW
PREVIEW
SOT-23-5 (DBV)
0.5%
SOT-23-3 (DBZ)
SOT-89 (PK)
TO-92 (LP)
PREVIEW
PREVIEW
TLV431BILP
TLV431BILPR
Reel of 3000
Reel of 250
Tube of 75
TLV431AIDCKR
TLV431AIDCKT
TLV431AID
PREVIEW
SC-70 (DCK)
SOIC (D)
TY431A
Reel of 2500
Reel of 3000
Reel of 250
Reel of 3000
Reel of 1000
Bulk of 1000
Ammo of 2000
Reel of 2000
Reel of 3000
Reel of 250
Reel of 3000
Reel of 250
Reel of 3000
Reel of 1000
Bulk of 1000
Reel of 2000
TLV431AIDR
TLV431AIDBVR
TLV431AIDBVT
TLV431AIDBZR
TLV431AIPK
TLV431AILP
‡ §
VAHI , YAI_
−40°C to 85°C
SOT-23-5 (DBV)
1%
§
YAI_
SOT-23-3 (DBZ)
SOT-89 (PK)
PREVIEW
TLV431AILPM
TLV431AILPR
TLV431IDCKR
TLV431IDCKT
TLV431IDBVR
TLV431IDBVT
TLV431IDBZR
TLV431IPK
TO-92 (LP)
V431AI
SC-70 (DCK)
PREVIEW
‡ §
VAII , Y3I_
SOT-23-5 (DBV)
1.5%
§
Y3I_
SOT-23-3 (DBZ)
SOT-89 (PK)
PREVIEW
TLV431ILP
TO-92 (LP)
V431I
TLV431ILPR
†
Package drawings, standard packing quantities, thermal data, symbolization, and PCB design guidelines are available at
www.ti.com/sc/package.
‡
§
Possible top-side marking on units prior to August 16, 2004.
DBV/DBZ: The actual top-side marking has one additional character that designates the assembly/test site.
3
POST OFFICE BOX 655303 • DALLAS, TEXAS 75265
ꢀ ꢁꢂ ꢃ ꢄꢅ ꢆ ꢀ ꢁꢂꢃ ꢄ ꢅꢇꢆ ꢀꢁꢂ ꢃ ꢄꢅ ꢈ
ꢁ ꢉꢊꢋꢂ ꢉꢁꢀꢇ ꢌꢍ ꢇꢎ ꢏ ꢐꢑꢀꢇꢈ ꢁꢍ ꢒ ꢓꢍ ꢔꢕ ꢑꢕ ꢉ ꢖ ꢑꢗꢐ ꢖꢀ ꢓꢍ ꢌꢐꢁ ꢇꢀꢉ ꢓꢑ
SLVS139J − JULY 1996 − REVISED AUGUST 2004
description/ordering information (continued)
ORDERING INFORMATION (continued)
V
ORDERABLE
PART NUMBER
TOP-SIDE
MARKING
REF
†
PACKAGE
T
J
TOLERANCE
Reel of 3000
Reel of 250
Reel of 3000
Reel of 250
Reel of 3000
Reel of 250
Reel of 1000
Bulk of 1000
Reel of 2000
TLV431BQDCKR
TLV431BQDCKT
TLV431BQDBVR
TLV431BQDBVT
TLV431BQDBZR
TLV431BQDBZT
TLV431BQPK
PREVIEW
PREVIEW
PREVIEW
SC-70 (DCK)
SOT-23-5 (DBV)
0.5%
SOT-23-3 (DBZ)
SOT-89 (PK)
TO-92 (LP)
PREVIEW
PREVIEW
TLV431BQLP
TLV431BQLPR
Reel of 3000
Reel of 250
Tube of 75
TLV431AQDCKR
TLV431AQDCKT
TLV431AQD
PREVIEW
PREVIEW
PREVIEW
SC-70 (DCK)
SOIC (D)
Reel of 2500
Reel of 3000
Reel of 250
Reel of 3000
Reel of 250
Reel of 1000
Bulk of 1000
Reel of 2000
Reel of 3000
Reel of 250
Reel of 3000
Reel of 250
Reel of 3000
Reel of 250
Reel of 1000
Bulk of 1000
Reel of 2000
TLV431AQDR
TLV431AQDBVR
TLV431AQDBVT
TLV431AQDBZR
TLV431AQDBZT
TLV431AQPK
TLV431AQLP
SOT-23-5 (DBV)
−40°C to 125°C
1%
PREVIEW
PREVIEW
PREVIEW
SOT-23-3 (DBZ)
SOT-89 (PK)
TO-92 (LP)
TLV431AQLPR
TLV431QDCKR
TLV431QDCKT
TLV431QDBVR
TLV431QDBVT
TLV431QDBZR
TLV431QDBZT
TLV431QPK
PREVIEW
PREVIEW
SC-70 (DCK)
SOT-23-5 (DBV)
1.5%
SOT-23-3 (DBZ)
SOT-89 (PK)
TO-92 (LP)
PREVIEW
PREVIEW
PREVIEW
TLV431QLP
TLV43IQLPR
†
Package drawings, standard packing quantities, thermal data, symbolization, and PCB design guidelines are available at
www.ti.com/sc/package.
4
POST OFFICE BOX 655303 • DALLAS, TEXAS 75265
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ꢁꢉ ꢊꢋꢂ ꢉꢁꢀꢇꢌ ꢍ ꢇꢎꢏ ꢐꢑ ꢀꢇꢈꢁ ꢍ ꢒꢓ ꢍꢔꢕꢑ ꢕꢉ ꢖ ꢑꢗꢐ ꢖꢀ ꢓꢍ ꢌ ꢐꢁ ꢇꢀꢉ ꢓꢑ
SLVS139J − JULY 1996 − REVISED AUGUST 2004
logic block diagram
CATHODE
REF
REF
+
−
V
= 1.24 V
ANODE
equivalent schematic
Cathode
REF
Anode
5
POST OFFICE BOX 655303 • DALLAS, TEXAS 75265
ꢀ ꢁꢂ ꢃ ꢄꢅ ꢆ ꢀ ꢁꢂꢃ ꢄ ꢅꢇꢆ ꢀꢁꢂ ꢃ ꢄꢅ ꢈ
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SLVS139J − JULY 1996 − REVISED AUGUST 2004
†
absolute maximum ratings over operating free-air temperature range (unless otherwise noted)
Cathode voltage, V (see Note 1) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 7 V
KA
Continuous cathode current range, I
. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . −20 mA to 20 mA
. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . −0.05 mA to 3 mA
K
Reference current range, I
ref
Package thermal impedance, θ (see Notes 2 and 3): D package . . . . . . . . . . . . . . . . . . . . . . . . . . . . 97°C/W
JA
DBV package . . . . . . . . . . . . . . . . . . . . . . . . 206°C/W
DBZ package . . . . . . . . . . . . . . . . . . . . . . . TBD°C/W
DCK package . . . . . . . . . . . . . . . . . . . . . . . . 252°C/W
LP package . . . . . . . . . . . . . . . . . . . . . . . . . . 140°C/W
PK package . . . . . . . . . . . . . . . . . . . . . . . . . . . 52°C/W
Operating virtual junction temperature . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 150°C
Storage temperature range, T
. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . −65°C to 150°C
stg
†
Stresses beyond those listed under “absolute maximum ratings” may cause permanent damage to the device. These are stress ratings only, and
functional operation of the device at these or any other conditions beyond those indicated under “recommended operating conditions” is not
implied. Exposure to absolute-maximum-rated conditions for extended periods may affect device reliability.
NOTES: 1. Voltage values are with respect to the anode terminal unless otherwise noted.
2. Maximum power dissipation is a function of T (max), θ , and T . The maximum allowable power dissipation at any allowable
J
JA
A
ambient temperature is P = (T (max) − T )/θ . Operating at the absolute maximum T of 150°C can affect reliability.
D
J
A
JA
J
3. The package thermal impedance is calculated in accordance with JESD 51-7.
recommended operating conditions
MIN
MAX
6
UNIT
V
V
Cathode voltage
Cathode current
V
KA
REF
0.1
I
K
15
mA
TLV431_C
TLV431_I
TLV431_Q
0
−40
−40
70
85
T
A
Operating free-air temperature range
°C
125
6
POST OFFICE BOX 655303 • DALLAS, TEXAS 75265
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ꢁꢉ ꢊꢋꢂ ꢉꢁꢀꢇꢌ ꢍ ꢇꢎꢏ ꢐꢑ ꢀꢇꢈꢁ ꢍ ꢒꢓ ꢍꢔꢕꢑ ꢕꢉ ꢖ ꢑꢗꢐ ꢖꢀ ꢓꢍ ꢌ ꢐꢁ ꢇꢀꢉ ꢓꢑ
SLVS139J − JULY 1996 − REVISED AUGUST 2004
TLV431 electrical characteristics at 25°C free-air temperature (unless otherwise noted)
TLV431
PARAMETER
TEST CONDITIONS
UNIT
MIN
1.222
1.21
TYP
MAX
T
A
= 25°C
1.24 1.258
1.27
TLV431C
TLV431I
TLV431Q
TLV431C
TLV431I
TLV431Q
V
I
= V ,
KA REF
= 10 mA
T
= full range
A
V
V
Reference voltage
V
REF
1.202
1.278
K
(see Note 4 and
Figure 1)
4
6
12
20
V
deviation over full
REF
temperature range (see Note 4)
V
= V
, I = 10 mA
KA REF K
mV
REF(dev)
(see Note 4 and Figure 1)
Ratio of V
change in cathode
voltage change
I = 10 mA
K
∆V
∆V
REF
REF
KA
V
KA
= V
REF
to 6 V
−1.5
0.15
−2.7
0.5
mV/V
(see Figure 2)
I
K
= 10 mA, R1 = 10 kΩ, R2 = open
I
Reference terminal current
µA
ref
(see Figure 2)
I = 10 mA, R1 = 10 kΩ, R2 = open
K
TLV431C
TLV431I
TLV431Q
0.05
0.1
0.3
0.4
I
deviation over full
ref
I
µA
ref(dev)
temperature range (see Note 4)
(see Note 4 and Figure 2)
Minimum cathode current for
regulation
I
I
V
= V
(see Figure 1)
= 6 V (see Figure 3)
KA
55
0.001
0.25
80
0.1
0.4
µA
µA
Ω
K(min)
KA
REF
Off-state cathode current
V
V
= 0, V
REF
K(off)
REF
Dynamic impedance
(see Note 5)
= V
, f ≤ 1 kHz,
KA
|z
|
KA
I
= 0.1 mA to 15 mA (see Figure 1)
K
NOTES: 4. Full temperature ranges are: −40°C to 125°C for TLV431Q, −40°C to 85°C for TLV431I, and 0°C to 70°C for the TLV431C.
5. The deviation parameters V and I are defined as the differences between the maximum and minimum values obtained
REF(dev) ref(dev)
over the rated temperature range. The average full-range temperature coefficient of the reference input voltage, αV
is defined as:
,
REF
V
REF(dev)
6
10
ǒ
Ǔ
VREF (TA+25°C)
ppm
ǒ Ǔ+
°C
Ť
Ť
αVREF
∆T
A
where ∆T is the rated operating free-air temperature range of the device.
A
α
can be positive or negative, depending on whether minimum V
REF
or maximum V , respectively, occurs at the
REF
VREF
lower temperature.
∆V
KA
∆I
The dynamic impedance is defined as: ŤzkaŤ +
6.
K
When the device is operating with two external resistors (see Figure 2), the total dynamic impedance of the circuit is defined
as:
∆V
∆I
R1
R2
ŤzkaŤȀ +
ŤzkaŤ
ǒ1 )
Ǔ
[
7
POST OFFICE BOX 655303 • DALLAS, TEXAS 75265
ꢀ ꢁꢂ ꢃ ꢄꢅ ꢆ ꢀ ꢁꢂꢃ ꢄ ꢅꢇꢆ ꢀꢁꢂ ꢃ ꢄꢅ ꢈ
ꢁ ꢉꢊꢋꢂ ꢉꢁꢀꢇ ꢌꢍ ꢇꢎ ꢏ ꢐꢑꢀꢇꢈ ꢁꢍ ꢒ ꢓꢍ ꢔꢕ ꢑꢕ ꢉ ꢖ ꢑꢗꢐ ꢖꢀ ꢓꢍ ꢌꢐꢁ ꢇꢀꢉ ꢓꢑ
SLVS139J − JULY 1996 − REVISED AUGUST 2004
TLV431A electrical characteristics at 25°C free-air temperature (unless otherwise noted)
TLV431A
PARAMETER
TEST CONDITIONS
UNIT
MIN
1.228
1.221
1.215
TYP
MAX
T
A
= 25°C
1.24 1.252
1.259
TLV431AC
TLV431AI
TLV431AQ
TLV431AC
TLV431AI
TLV431AQ
V
I
= V ,
KA REF
= 10 mA
T
= full range
A
V
V
Reference voltage
V
REF
1.265
K
(see Note 3 and
Figure 1)
4
6
12
20
V
deviation over full
REF
temperature range (see Note 4)
V
= V
, I = 10 mA
KA REF K
mV
REF(dev)
(see Note 3 and Figure 1)
Ratio of V
change in cathode
voltage change
I = 10 mA
K
∆V
∆V
REF
REF
KA
V
KA
= V
REF
to 6 V
−1.5
0.15
−2.7
0.5
mV/V
(see Figure 2)
I
K
= 10 mA, R1 = 10 kΩ, R2 = open
I
Reference terminal current
µA
ref
(see Figure 2)
I = 10 mA, R1 = 10 kΩ, R2 = open
K
TLV431AC
TLV431AI
TLV431AQ
0.05
0.1
0.3
0.4
I
deviation over full
ref
I
µA
ref(dev)
temperature range (see Note 4)
(see Note 3 and Figure 2)
Minimum cathode current for
regulation
I
I
V
= V
(see Figure 1)
= 6 V (see Figure 3)
KA
55
0.001
0.25
80
0.1
0.4
µA
µA
Ω
K(min)
KA
REF
Off-state cathode current
V
V
= 0, V
REF
K(off)
REF
Dynamic impedance
(see Note 5)
= V
, f ≤ 1 kHz,
KA
|z
|
KA
I
= 0.1 mA to 15 mA (see Figure 1)
K
NOTES: 3. Full temperature ranges are: −40°C to 125°C for TLV431AQ, −40°C to 85°C for TLV431AI, and 0°C to 70°C for the TLV431AC.
4. The deviation parameters V and I are defined as the differences between the maximum and minimum values obtained
REF(dev) ref(dev)
over the rated temperature range. The average full-range temperature coefficient of the reference input voltage, αV
is defined as:
,
REF
V
REF(dev)
6
10
ǒ
Ǔ
VREF (TA+25°C)
ppm
ǒ Ǔ+
°C
Ť
Ť
αVREF
∆T
A
where ∆T is the rated operating free-air temperature range of the device.
A
α
can be positive or negative, depending on whether minimum V
REF
or maximum V , respectively, occurs at the
REF
VREF
lower temperature.
∆V
KA
∆I
The dynamic impedance is defined as: ŤzkaŤ +
5.
K
When the device is operating with two external resistors (see Figure 2), the total dynamic impedance of the circuit is defined
as:
∆V
∆I
R1
R2
ŤzkaŤȀ +
ŤzkaŤ
ǒ1 )
Ǔ
[
8
POST OFFICE BOX 655303 • DALLAS, TEXAS 75265
ꢀ ꢁꢂꢃ ꢄ ꢅ ꢆ ꢀ ꢁꢂꢃ ꢄ ꢅ ꢇꢆ ꢀꢁꢂ ꢃꢄ ꢅꢈ
ꢁꢉ ꢊꢋꢂ ꢉꢁꢀꢇꢌ ꢍ ꢇꢎꢏ ꢐꢑ ꢀꢇꢈꢁ ꢍ ꢒꢓ ꢍꢔꢕꢑ ꢕꢉ ꢖ ꢑꢗꢐ ꢖꢀ ꢓꢍ ꢌ ꢐꢁ ꢇꢀꢉ ꢓꢑ
SLVS139J − JULY 1996 − REVISED AUGUST 2004
TLV431B electrical characteristics at 25°C free-air temperature (unless otherwise noted)
TLV431B
PARAMETER
TEST CONDITIONS
UNIT
MIN
1.234
1.227
1.224
TYP
MAX
T
A
= 25°C
1.24 1.246
1.253
TLV431BC
TLV431BI
TLV431BQ
TLV431BC
TLV431BI
TLV431BQ
V
I
= V ,
KA REF
= 10 mA
T
= full range
A
V
V
Reference voltage
V
REF
1.259
K
(see Note 3 and
Figure 1)
4
6
12
20
V
deviation over full
REF
temperature range (see Note 4)
V
= V
, I = 10 mA
KA REF K
mV
REF(dev)
(see Note 3 and Figure 1)
Ratio of V
change in cathode
voltage change
I = 10 mA
K
∆V
∆V
REF
REF
KA
V
KA
= V
REF
to 6 V
−1.5
0.15
−2.7
0.5
mV/V
(see Figure 2)
I
K
= 10 mA, R1 = 10 kΩ, R2 = open
I
Reference terminal current
µA
ref
(see Figure 2)
I = 10 mA, R1 = 10 kΩ, R2 = open
K
TLV431BC
TLV431BI
TLV431BQ
0.05
0.1
0.3
0.4
I
deviation over full
ref
I
µA
ref(dev)
temperature range (see Note 4)
(see Note 3 and Figure 2)
Minimum cathode current for
regulation
I
I
V
= V
(see Figure 1)
= 6 V (see Figure 3)
KA
55
0.001
0.25
80
0.1
0.4
µA
µA
Ω
K(min)
KA
REF
Off-state cathode current
V
V
= 0, V
REF
K(off)
REF
Dynamic impedance
(see Note 5)
= V
, f ≤ 1 kHz,
KA
|z
|
KA
I
= 0.1 mA to 15 mA (see Figure 1)
K
NOTES: 3. Full temperature ranges are: −40°C to 125°C for TLV431BQ, −40°C to 85°C for TLV431BI, and 0°C to 70°C for the TLV431BC.
4. The deviation parameters V and I are defined as the differences between the maximum and minimum values obtained
REF(dev) ref(dev)
over the rated temperature range. The average full-range temperature coefficient of the reference input voltage, αV
is defined as:
,
REF
V
REF(dev)
6
10
ǒ
Ǔ
VREF (TA+25°C)
ppm
ǒ Ǔ+
°C
Ť
Ť
αVREF
∆T
A
where ∆T is the rated operating free-air temperature range of the device.
A
α
can be positive or negative, depending on whether minimum V
REF
or maximum V , respectively, occurs at the
REF
VREF
lower temperature.
∆V
5. The dynamic impedance is defined as:
KA
∆I
ŤzkaŤ +
K
When the device is operating with two external resistors (see Figure 2), the total dynamic impedance of the circuit is defined
as:
∆V
∆I
R1
R2
ŤzkaŤȀ +
ŤzkaŤ
ǒ1 )
Ǔ
[
ꢒ
ꢓ
ꢉ
ꢎ
ꢐ
ꢔ
ꢀ
ꢒ
ꢓ
ꢍ
ꢂ
ꢕ
ꢍ
ꢊ
ꢘ
ꢙ
ꢚ
ꢛ
ꢜ
ꢝ
ꢞ
ꢟ
ꢘ
ꢛ
ꢙ
ꢡ
ꢛ
ꢙ
ꢡ
ꢣ
ꢜ
ꢙ
ꢠ
ꢤ
ꢜ
ꢛ
ꢧ
ꢢ
ꢧꢣ ꢠ ꢘ ꢭꢙ ꢤꢩ ꢞ ꢠ ꢣ ꢛꢚ ꢧꢣ ꢮ ꢣ ꢦꢛ ꢤꢝꢣ ꢙꢟꢨ ꢔ ꢩꢞ ꢜꢞ ꢡꢟ ꢣꢜ ꢘꢠ ꢟꢘ ꢡ ꢧꢞ ꢟꢞ ꢞꢙ ꢧ ꢛꢟ ꢩꢣꢜ
ꢡ
ꢟ
ꢠ
ꢘ
ꢙ
ꢟ
ꢩ
ꢣ
ꢚ
ꢛ
ꢜ
ꢝ
ꢞ
ꢟ
ꢘ
ꢮ
ꢣ
ꢛ
ꢜ
ꢠ
ꢤ
ꢣ
ꢡ
ꢘ
ꢚ
ꢘ
ꢡ
ꢞ
ꢟ
ꢘ
ꢛ
ꢙ
ꢠ
ꢞ
ꢜ
ꢣ
ꢧ
ꢣ
ꢠ
ꢘ
ꢭ
ꢙ
ꢭ
ꢛ
ꢞ
ꢦ
ꢠ
ꢨ
ꢀ
ꢣ
ꢪ
ꢞ
ꢠ
ꢕ
ꢙ
ꢠ
ꢟ
ꢜ
ꢢ
ꢝ
ꢣ
ꢙ
ꢡ ꢩꢞ ꢙ ꢭꢣ ꢛꢜ ꢧꢘ ꢠ ꢡ ꢛꢙ ꢟꢘ ꢙꢢꢣ ꢟ ꢩꢣ ꢠ ꢣ ꢤꢜ ꢛꢧ ꢢꢡꢟ ꢠ ꢫ ꢘꢟꢩ ꢛꢢꢟ ꢙꢛꢟ ꢘꢡꢣ ꢨ
ꢟ
ꢠ
ꢜ
ꢣ
ꢠ
ꢣ
ꢜ
ꢮ
ꢣ
ꢠ
ꢟ
ꢩ
ꢣ
ꢜ
ꢘ
ꢭ
ꢩ
ꢟ
ꢟ
ꢛ
9
POST OFFICE BOX 655303 • DALLAS, TEXAS 75265
ꢀ ꢁꢂ ꢃ ꢄꢅ ꢆ ꢀ ꢁꢂꢃ ꢄ ꢅꢇꢆ ꢀꢁꢂ ꢃ ꢄꢅ ꢈ
ꢁ ꢉꢊꢋꢂ ꢉꢁꢀꢇ ꢌꢍ ꢇꢎ ꢏ ꢐꢑꢀꢇꢈ ꢁꢍ ꢒ ꢓꢍ ꢔꢕ ꢑꢕ ꢉ ꢖ ꢑꢗꢐ ꢖꢀ ꢓꢍ ꢌꢐꢁ ꢇꢀꢉ ꢓꢑ
SLVS139J − JULY 1996 − REVISED AUGUST 2004
PARAMETER MEASUREMENT INFORMATION
Input
R1
V
O
Input
V
O
I
K
I
K
I
ref
R2
V
REF
V
REF
Figure 1. Test Circuit for V
= V
,
Figure 2. Test Circuit for V
> V
,
KA
REF
REF
KA
REF
V = V
= V
V = V
= V
× (1 + R1/R2) + I × R1
O
KA
O
KA
REF ref
Input
V
O
I
K(off)
Figure 3. Test Circuit for I
K(off)
10
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ꢁꢉ ꢊꢋꢂ ꢉꢁꢀꢇꢌ ꢍ ꢇꢎꢏ ꢐꢑ ꢀꢇꢈꢁ ꢍ ꢒꢓ ꢍꢔꢕꢑ ꢕꢉ ꢖ ꢑꢗꢐ ꢖꢀ ꢓꢍ ꢌ ꢐꢁ ꢇꢀꢉ ꢓꢑ
SLVS139J − JULY 1996 − REVISED AUGUST 2004
†
PARAMETER MEASUREMENT INFORMATION
REFERENCE VOLTAGE
REFERENCE INPUT CURRENT
vs
vs
JUNCTION TEMPERATURE
JUNCTION TEMPERATURE
1.254
1.252
1.250
1.248
250
200
I
K
= 10 mA
I
= 10 mA
K
R1 = 10 kΩ
R2 = Open
1.246
1.244
150
100
1.242
1.240
1.238
50
−50 −25
0
25
50
75
100 125 150
−50 −25
0
25
50
75 100 125 150
T
J
− Junction Temperature − °C
T
J
− Junction Temperature − °C
Figure 4
Figure 5
CATHODE CURRENT
vs
CATHODE CURRENT
vs
CATHODE VOLTAGE
CATHODE VOLTAGE
15
10
250
V
T
= V
= 25°C
V
T
= V
REF
KA REF
A
KA
A
= 25°C
200
150
100
50
5
0
0
−50
−100
−5
−10
−150
−200
−250
−15
−1
−0.5
0
0.5
1
1.5
−1
−0.5
0
0.5
1
1.5
V
KA
− Cathode Voltage − V
V
KA
− Cathode Voltage − V
Figure 6
Figure 7
†
Operation of the device at these or any other conditions beyond those indicated under “recommended operating conditions” is not implied.
11
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ꢀ ꢁꢂ ꢃ ꢄꢅ ꢆ ꢀ ꢁꢂꢃ ꢄ ꢅꢇꢆ ꢀꢁꢂ ꢃ ꢄꢅ ꢈ
ꢁ ꢉꢊꢋꢂ ꢉꢁꢀꢇ ꢌꢍ ꢇꢎ ꢏ ꢐꢑꢀꢇꢈ ꢁꢍ ꢒ ꢓꢍ ꢔꢕ ꢑꢕ ꢉ ꢖ ꢑꢗꢐ ꢖꢀ ꢓꢍ ꢌꢐꢁ ꢇꢀꢉ ꢓꢑ
SLVS139J − JULY 1996 − REVISED AUGUST 2004
†
PARAMETER MEASUREMENT INFORMATION
RATIO OF DELTA REFERENCE VOLTAGE
TO DELTA CATHODE VOLTAGE
vs
OFF-STATE CATHODE CURRENT
vs
JUNCTION TEMPERATURE
JUNCTION TEMPERATURE
40
30
0
V
V
= 5 V
= 0
KA
REF
−0.1
−0.2
−0.3
−0.4
20
10
−0.5
−0.6
I
= 10 mA
K
−0.7
−0.8
∆V
KA
= V
REF
to 6 V
25
0
−50 −25
0
25
50
75
100 125
−50 −25
0
50
75 100 125 150
T
J
− Junction Temperature − °C
T
J
− Junction Temperature − °C
Figure 8
Figure 9
†
Operation of the device at these or any other conditions beyond those indicated under “recommended operating conditions” is not implied.
PERCENTAGE CHANGE IN V
vs
REF
OPERATING LIFE AT 55°C
0.025
0
I
K
= 1 mA
% Change (avg)
% Change (3δ)
− 0.025
− 0.05
− 0.075
− 0.1
% Change (−3δ)
− 0.125
0
10
20
30
40
50
60
†
Operating Life at 55°C − kh
†
Extrapolated from life-test data taken at 125°C; the activation energy assumed is 0.7 eV.
Figure 10
12
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ꢁꢉ ꢊꢋꢂ ꢉꢁꢀꢇꢌ ꢍ ꢇꢎꢏ ꢐꢑ ꢀꢇꢈꢁ ꢍ ꢒꢓ ꢍꢔꢕꢑ ꢕꢉ ꢖ ꢑꢗꢐ ꢖꢀ ꢓꢍ ꢌ ꢐꢁ ꢇꢀꢉ ꢓꢑ
SLVS139J − JULY 1996 − REVISED AUGUST 2004
PARAMETER MEASUREMENT INFORMATION
EQUIVALENT INPUT NOISE VOLTAGE
vs
FREQUENCY
3 V
350
300
250
V
I
T
A
= V
REF
KA
K
= 1 mA
1 kΩ
= 25°C
+
750 Ω
470 µF
TLE2027
2200 µF
+
+
_
TP
820 Ω
TLV431
or
160 kΩ
TLV431A
or
TLV431B
200
150
160 Ω
TEST CIRCUIT FOR EQUIVALENT NOISE VOLTAGE
10
100
1 k
10 k
100 k
f− Frequency − Hz
Figure 11
13
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ꢁ ꢉꢊꢋꢂ ꢉꢁꢀꢇ ꢌꢍ ꢇꢎ ꢏ ꢐꢑꢀꢇꢈ ꢁꢍ ꢒ ꢓꢍ ꢔꢕ ꢑꢕ ꢉ ꢖ ꢑꢗꢐ ꢖꢀ ꢓꢍ ꢌꢐꢁ ꢇꢀꢉ ꢓꢑ
SLVS139J − JULY 1996 − REVISED AUGUST 2004
PARAMETER MEASUREMENT INFORMATION
EQUIVALENT INPUT NOISE VOLTAGE
OVER A 10-SECOND PERIOD
10
f = 0.1 Hz to 10 Hz
8
I
T
= 1 mA
= 25°C
K
A
6
4
2
0
−2
−4
−6
−8
−10
0
2
4
6
8
10
t − Time − s
3 V
1 kΩ
0.47 µF
+
750 Ω
470 µF
2200 µF
TLE2027
+
TP
+
TLE2027
+
10 kΩ 10 kΩ
1 µF
2.2 µF
+
_
_
820 Ω
160 kΩ
0.1 µF
TLV431
or
TLV431A
or
1 MΩ
CRO
33 kΩ
33 kΩ
16 Ω
TLV431B
TEST CIRCUIT FOR 0.1-Hz TO 10-Hz EQUIVALENT NOISE VOLTAGE
Figure 12
14
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ꢁꢉ ꢊꢋꢂ ꢉꢁꢀꢇꢌ ꢍ ꢇꢎꢏ ꢐꢑ ꢀꢇꢈꢁ ꢍ ꢒꢓ ꢍꢔꢕꢑ ꢕꢉ ꢖ ꢑꢗꢐ ꢖꢀ ꢓꢍ ꢌ ꢐꢁ ꢇꢀꢉ ꢓꢑ
SLVS139J − JULY 1996 − REVISED AUGUST 2004
PARAMETER MEASUREMENT INFORMATION
SMALL-SIGNAL VOLTAGE GAIN
/PHASE MARGIN
vs
FREQUENCY
80
70
0°
I
T
= 10 mA
= 25°C
K
A
36°
Output
60
50
72°
I
K
6.8 kΩ
4.3 kΩ
180 Ω
108°
10 µF
40
144°
180°
5 V
30
20
10
GND
0
−10
−20
TEST CIRCUIT FOR VOLTAGE GAIN
AND PHASE MARGIN
100
1 k
10 k
100 k
1 M
f − Frequency − Hz
Figure 13
REFERENCE IMPEDANCE
vs
FREQUENCY
100
10
I
T
= 0.1 mA to 15 mA
= 25°C
K
A
100 Ω
Output
I
K
100 Ω
1
−
+
GND
0.1
0.01
TEST CIRCUIT FOR REFERENCE IMPEDANCE
1 k
10 k
100 k
1 M
10 M
f − Frequency − Hz
Figure 14
15
POST OFFICE BOX 655303 • DALLAS, TEXAS 75265
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ꢁ ꢉꢊꢋꢂ ꢉꢁꢀꢇ ꢌꢍ ꢇꢎ ꢏ ꢐꢑꢀꢇꢈ ꢁꢍ ꢒ ꢓꢍ ꢔꢕ ꢑꢕ ꢉ ꢖ ꢑꢗꢐ ꢖꢀ ꢓꢍ ꢌꢐꢁ ꢇꢀꢉ ꢓꢑ
SLVS139J − JULY 1996 − REVISED AUGUST 2004
PARAMETER MEASUREMENT INFORMATION
PULSE RESPONSE 1
3.5
3
R = 18 kΩ
= 25°C
T
Input
A
18 kΩ
Output
2.5
2
I
k
Pulse
Generator
f = 100 kHz
50 Ω
1.5
1
Output
GND
0.5
0
TEST CIRCUIT FOR PULSE RESPONSE 1
−0.5
0
1
2
3
4
5
6
7
8
t − Time − µs
Figure 15
PULSE RESPONSE 2
3.5
3
R = 1.8 kΩ
= 25°C
T
Input
A
1.8 kΩ
Output
2.5
2
I
K
Pulse
Generator
f = 100 kHz
50 Ω
1.5
1
Output
GND
0.5
0
TEST CIRCUIT FOR PULSE RESPONSE 2
−0.5
0
1
2
3
4
5
6
7
8
t − Time − µs
Figure 16
16
POST OFFICE BOX 655303 • DALLAS, TEXAS 75265
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ꢁꢉ ꢊꢋꢂ ꢉꢁꢀꢇꢌ ꢍ ꢇꢎꢏ ꢐꢑ ꢀꢇꢈꢁ ꢍ ꢒꢓ ꢍꢔꢕꢑ ꢕꢉ ꢖ ꢑꢗꢐ ꢖꢀ ꢓꢍ ꢌ ꢐꢁ ꢇꢀꢉ ꢓꢑ
SLVS139J − JULY 1996 − REVISED AUGUST 2004
PARAMETER MEASUREMENT INFORMATION†
‡
STABILITY BOUNDARY CONDITION
16
T
A
= 25°C
I
K
= 15 mA MAX
14
12
V
KA
= V
REF
10
8
Stable
Stable
V
KA
= 2 V
6
4
V
KA
= 3 V
2
0
0.001
0.01
0.1
1
10
C
− Load Capacitance − µF
L
150 Ω
150 Ω
I
K
I
K
+
−
+
−
R1 = 10 kΩ
C
C
L
L
V
bat
V
bat
R2
TEST CIRCUIT FOR V
KA
= V
REF
TEST CIRCUIT FOR V
= 2 V, 3 V
KA
†
‡
Operation of the device at these or any other conditions beyond those indicated under “recommended operating conditions” is not implied.
The areas under the curves represent conditions that may cause the device to oscillate. For V = 2 V and 3 V curves, R2 and V were adjusted
KA bat
to establish the initial V
and I conditions with C = 0. V
and C then were adjusted to determine the ranges of stability.
L
KA
K
L
bat
Figure 17
17
POST OFFICE BOX 655303 • DALLAS, TEXAS 75265
ꢀ ꢁꢂ ꢃ ꢄꢅ ꢆ ꢀ ꢁꢂꢃ ꢄ ꢅꢇꢆ ꢀꢁꢂ ꢃ ꢄꢅ ꢈ
ꢁ ꢉꢊꢋꢂ ꢉꢁꢀꢇ ꢌꢍ ꢇꢎ ꢏ ꢐꢑꢀꢇꢈ ꢁꢍ ꢒ ꢓꢍ ꢔꢕ ꢑꢕ ꢉ ꢖ ꢑꢗꢐ ꢖꢀ ꢓꢍ ꢌꢐꢁ ꢇꢀꢉ ꢓꢑ
SLVS139J − JULY 1996 − REVISED AUGUST 2004
APPLICATION INFORMATION
~
V
120 V
I
−
+
P
~
V
3.3 V
O
P
P
Gate Drive
V
CC
Controller
V
FB
TLV431
or
TLV431A
or
Current
Sense
GND
TLV431B
P
P
P
P
Figure 18. Flyback With Isolation Using TLV431, TLV431A, or TLV431B
as Voltage Reference and Error Amplifier
Figure 18 shows the TLV431, TLV431A, or TLV431B used in a 3.3-V isolated flyback supply. Output voltage V
O
can be as low as reference voltage V
(1.24 V 1%). The output of the regulator, plus the forward voltage
REF
drop of the optocoupler LED (1.24 + 1.4 = 2.64 V), determine the minimum voltage that can be regulated in an
isolated supply configuration. Regulated voltage as low as 2.7 Vdc is possible in the above topology.
18
POST OFFICE BOX 655303 • DALLAS, TEXAS 75265
MECHANICAL DATA
MPDS108 – AUGUST 2001
DBZ (R-PDSO-G3)
PLASTIC SMALL-OUTLINE
3,04
2,80
2,05
1,78
0,60
0,45
1,03
0,89
2,64
2,10
1,40
1,20
0,51
0,37
1,12
0,89
0,100
0,013
0,180
0,085
0,55 REF
4203227/A 08/01
NOTES: A. All linear dimensions are in millimeters.
B. This drawing is subject to change without notice.
C. Dimensions are inclusive of plating.
D. Dimensions are exclusive of mold flash and metal burr.
POST OFFICE BOX 655303 • DALLAS, TEXAS 75265
MECHANICAL DATA
MSOT002A – OCTOBER 1994 – REVISED NOVEMBER 2001
LP (O-PBCY-W3)
PLASTIC CYLINDRICAL PACKAGE
0.205 (5,21)
0.175 (4,44)
0.165 (4,19)
0.125 (3,17)
DIA
0.210 (5,34)
0.170 (4,32)
Seating
Plane
0.157 (4,00) MAX
0.050 (1,27)
C
0.500 (12,70) MIN
0.022 (0,56)
0.016 (0,41)
0.016 (0,41)
0.014 (0,35)
0.104 (2,65)
FORMED LEAD OPTION
STRAIGHT LEAD OPTION
D
0.135 (3,43) MIN
0.105 (2,67)
0.095 (2,41)
0.055 (1,40)
0.045 (1,14)
1
2
3
0.105 (2,67)
0.080 (2,03)
0.105 (2,67)
0.080 (2,03)
4040001-2/C 10/01
NOTES: A. All linear dimensions are in inches (millimeters).
B. This drawing is subject to change without notice.
C. Lead dimensions are not controlled within this area
D. FAlls within JEDEC TO -226 Variation AA (TO-226 replaces TO-92)
E. Shipping Method:
Straight lead option available in bulk pack only.
Formed lead option available in tape & reel or ammo pack.
1
POST OFFICE BOX 655303 • DALLAS, TEXAS 75265
MECHANICAL DATA
MSOT002A – OCTOBER 1994 – REVISED NOVEMBER 2001
LP (O-PBCY-W3)
PLASTIC CYLINDRICAL PACKAGE
0.539 (13,70)
0.460 (11,70)
1.260 (32,00)
0.905 (23,00)
0.650 (16,50)
0.610 (15,50)
0.020 (0,50) MIN
0.098 (2,50)
0.384 (9,75)
0.335 (8,50)
0.748 (19,00)
0.217 (5,50)
0.748 (19,00)
0.689 (17,50)
0.433 (11,00)
0.335 (8,50)
0.114 (2,90)
0.094 (2,40)
0.114 (2,90)
0.094 (2,40)
0.169 (4,30)
0.146 (3,70)
DIA
0.266 (6,75)
0.234 (5,95)
0.512 (13,00)
0.488 (12,40)
TAPE & REEL
4040001-3/C 10/01
NOTES: A. All linear dimensions are in inches (millimeters).
B. This drawing is subject to change without notice.
C. Tape and Reel information for the Format Lead Option package.
2
POST OFFICE BOX 655303 • DALLAS, TEXAS 75265
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