TLV431B-Q1_技术文档

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SLVS905 − DECEMBER 2008

D

Qualified for Automotive Applications

Low-Voltage Operation: V = 1.24 V

D

Low Operational Cathode Current :80 µA Typ

0.25-Ω Typical Output Impedance

See TLVH431 and TLVH432 for

REF

Adjustable Output Voltage, V = V

to 6 V

O

REF

− Wider V

(1.24 V to 18 V) and I (80 mA)

KA

K

Reference Voltage Tolerances at 255C

− Additional SOT-89 Package

− Multiple Pinouts for SOT-23-3 and SOT-89

Packages

− 0.5% for TLV431B

− 1% for TLV431A

D

Typical Temperature Drift: 11 mV

DBV (SOT-23-5) PACKAGE

(TOP VIEW)

DBZ (SOT-23-3) PACKAGE

(TOP VIEW)

1

2

3

5

4

REF

NC

*

CATHODE

ANODE

REF

3

ANODE

2

CATHODE

NC − No internal connection

* For TLV431A: NC − No internal connection

* For TLV431B: Pin 2 is attached to Substrate and must

be connected to ANODE or left open.

description/ordering information

The TLV431 is a low-voltage 3-terminal adjustable voltage reference with specified thermal stability over

applicable industrial and commercial temperature ranges. Output voltage can be set to any value between V

REF

(1.24 V) and 6 V with two external resistors (see Figure 2). These devices operate from a lower voltage (1.24 V)

than the widely used TL431 and TL1431 shunt-regulator references.

When used with an optocoupler, the TLV431 is an ideal voltage reference 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 them excellent replacements for

low-voltage Zener diodes in many applications, including on-board regulation and adjustable power supplies.

ORDERING INFORMATION

255C V

ORDERABLE

PART NUMBER

TOP-SIDE

MARKING

REF

†

PACKAGE

T

J

TOLERANCE

SOT-23-5 (DBV)

SOT-23-3 (DBZ)

SOT-23-5 (DBV)

Reel of 3000

TLV431BQDBVRQ1 VOMQ

TLV431BQDBZRQ1 VOQQ

TLV431AQDBVRQ1 VONQ

0.5%

1%

−40°C to 125°C

†

‡

For the most current package and ordering information, see the Package Option Addendum at the end of this document, or see

the TI web site at http://www.ti.com.

Package drawings, thermal data, and symbolization are available at http://www.ti.com/packaging.

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  2008, Texas Instruments Incorporated

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1

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SLVS905 − DECEMBER 2008

logic block diagram

CATHODE

REF

+

−

V

= 1.24 V

ANODE

equivalent schematic

CATHODE

REF

ANODE

2

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SLVS905 − DECEMBER 2008

†

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): DBV package . . . . . . . . . . . . . . . . . . . . . . . . 206°C/W

JA

DBZ package . . . . . . . . . . . . . . . . . . . . . . . . . 206°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

KA

Cathode voltage

V

REF

0.1

I

K

Cathode current

15

mA

T

A

Operating free-air temperature range

−40

125

°C

3

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SLVS905 − DECEMBER 2008

TLV431A electrical characteristics at 25°C free-air temperature (unless otherwise noted)

TLV431A

PARAMETER

TEST CONDITIONS

UNIT

MIN

1.228

1.209

TYP

MAX

T

A

= 25°C

1.24 1.252

1.271

V

I

= V

,

KA

= 10 mA

REF

V

Reference voltage

V

REF

†

= full range (see Figure 1)

T

A

K

V

deviation over full

REF

temperature range

V

= V

, I = 10 mA (see Figure 1)

REF K

11

31

mV

REF(dev)

KA

†‡

Ratio of V

REF

voltage change

change in cathode

∆V

REF

KA

= V

to 6 V, I = 10 mA (see Figure 2)

−1.5

0.15

−2.7

0.5

mV/V

µA

REF

K

I

Reference terminal current

deviation over full

I

= 10 mA, R1 = 10 kΩ, R2 = open (see Figure 2)

ref

K

I

ref

temperature range

I

0.5

µA

ref(dev)

K

†

Minimum cathode current for

regulation

I

V

= V

(see Figure 1)

= 6 V (see Figure 3)

KA

55

0.001

0.25

100

0.1

0.4

µA

Ω

K(min)

KA

REF

Off-state cathode current

V

= 0, V

REF

K(off)

REF

= V

, f ≤ 1 kHz,

KA

§

|z

|

Dynamic impedance

KA

I

= 0.1 mA to 15 mA (see Figure 1)

K

†

‡

Full temperature range is −40°C to 125°C.

The deviation parameters V and I

rated temperature range. The average full-range temperature coefficient of the reference input voltage, αV

are defined as the differences between the maximum and minimum values obtained over the

REF(dev) ref(dev)

, is defined as:

REF

V

REF(dev)

6

10

ǒ

Ǔ

V_REF(T_A+25°C)

ppm

ǒ Ǔ₊

°C

Ť

αV_REF

∆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

§

Ť_zkaŤ ₊

The dynamic impedance is defined as

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

Ť_zkaŤ_Ȁ +

Ť_zkaŤ

ǒ_{1 )}

Ǔ

[

4

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SLVS905 − DECEMBER 2008

TLV431B electrical characteristics at 25°C free-air temperature (unless otherwise noted)

TLV431B

PARAMETER

TEST CONDITIONS

UNIT

MIN

1.234

1.221

TYP

MAX

T

A

= 25°C

1.24 1.246

1.265

V

I

= V

,

KA

= 10 mA

REF

V

Reference voltage

V

REF

†

= full range (see Figure 1)

T

A

K

V

deviation over full

REF

temperature range

V

= V

, I = 10 mA (see Figure 1)

REF K

11

31

mV

REF(dev)

KA

†‡

Ratio of V

REF

voltage change

change in cathode

∆V

REF

KA

= V

to 6 V, I = 10 mA (see Figure 2)

−1.5

0.1

−2.7

0.5

mV/V

µA

REF

K

I

Reference terminal current

deviation over full

I

= 10 mA, R1 = 10 kΩ, R2 = open (see Figure 2)

ref

K

I

ref

temperature range

I

0.15

0.5

µA

ref(dev)

K

†‡

Minimum cathode current for

regulation

I

V

= V

(see Figure 1)

= 6 V (see Figure 3)

KA

55

0.001

0.25

100

0.1

0.4

µA

Ω

K(min)

KA

REF

Off-state cathode current

V

= 0, V

REF

K(off)

REF

= V

, f ≤ 1 kHz, I = 0.1 mA to 15 mA

K

KA

§

|z

|

Dynamic impedance

KA

(see Figure 1)

†

‡

Full temperature range is −40°C to 125°C.

The deviation parameters V and I

rated temperature range. The average full-range temperature coefficient of the reference input voltage, αV

are defined as the differences between the maximum and minimum values obtained over the

REF(dev) ref(dev)

, is defined as:

REF

V

REF(dev)

6

10

ǒ

Ǔ

V_REF(T_A+25°C)

ppm

ǒ Ǔ₊

°C

Ť

αV_REF

∆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

Ť_zkaŤ ₊

§

The dynamic impedance is defined as

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

Ť_zkaŤ_Ȁ +

Ť_zkaŤ

ǒ_{1 )}

Ǔ

[

5

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SLVS905 − DECEMBER 2008

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

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)

6

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SLVS905 − DECEMBER 2008

†

PARAMETER MEASUREMENT INFORMATION

REFERENCE VOLTAGE

vs

JUNCTION TEMPERATURE

1.254

I

K

= 10 mA

1.252

1.250

1.248

1.246

1.244

1.242

1.240

1.238

−50 −25

0

25

50

75

100 125 150

T

J

− Junction Temperature − °C

Figure 4

REFERENCE INPUT CURRENT

vs

REFERENCE INPUT CURRENT

vs

JUNCTION TEMPERATURE

(for TLV431A)

JUNCTION TEMPERATURE

(for TLV431B)

250

230

210

190

170

150

130

110

90

250

200

I

= 10 mA

K

I

= 10 mA

K

R1 = 10 kΩ

R2 = Open

R1 = 10 kΩ

R2 = Open

150

100

70

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 5

Figure 5A

Figure 5B

†

Operation of the device at these or any other conditions beyond those indicated under “recommended operating conditions” is not implied.

7

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SLVS905 − DECEMBER 2008

†

PARAMETER MEASUREMENT INFORMATION

CATHODE CURRENT

vs

CATHODE CURRENT

vs

CATHODE VOLTAGE

15

250

200

150

100

50

V

T

= V

= 25°C

V

T

= V

REF

KA REF

A

KA

A

= 25°C

10

5

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

OFF-STATE CATHODE CURRENT

vs

OFF-STATE CATHODE CURRENT

vs

JUNCTION TEMPERATURE

(for TLV431A)

JUNCTION TEMPERATURE

(for TLV431B)

3000

40

30

V

= 5 V

= 0

KA

REF

V

KA

V

= 6 V

= 0

REF

2500

2000

1500

1000

500

20

10

0

−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 8A

Figure 8B

Figure 8

†

Operation of the device at these or any other conditions beyond those indicated under “recommended operating conditions” is not implied.

8

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SLVS905 − DECEMBER 2008

†

PARAMETER MEASUREMENT INFORMATION

RATIO OF DELTA REFERENCE VOLTAGE

TO DELTA CATHODE VOLTAGE

vs

RATIO OF DELTA REFERENCE VOLTAGE

TO DELTA CATHODE VOLTAGE

vs

JUNCTION TEMPERATURE

(for TLV431A)

JUNCTION TEMPERATURE

(for TLV431B)

−0.0

0

I

= 10 mA

K

−0.1

−0.2

−0.3

−0.4

−0.5

−0.6

−0.7

−0.8

−0.9

−0.1

∆V

KA

= V to 6 V

REF

−0.2

−0.3

−0.4

−0.5

−0.6

I

= 10 mA

K

−0.7

−0.8

∆V

KA

= V

REF

to 6 V

25

−1

−1.0

−50 −25

0

25

50

75

100 125 150

−50 −25

0

50

75 100 125 150

T

J

− Junction Temperature − °C

T

J

− Junction Temperature − °C

Figure 9A

Figure 9B

Figure 9

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

†

Operation of the device at these or any other conditions beyond those indicated under “recommended operating conditions” is not implied.

9

POST OFFICE BOX 655303 • DALLAS, TEXAS 75265

ꢀ ꢁꢂ ꢃ ꢄꢅ ꢆꢇ ꢈꢅ ꢉ ꢀ ꢁꢂ ꢃ ꢄꢅ ꢊꢇ ꢈꢅ

ꢁ ꢋꢌꢇꢂ ꢋꢁꢀꢆ ꢍꢎ ꢆꢏ ꢐ ꢑꢒꢀꢆꢊ ꢁꢎ ꢓ ꢔꢎ ꢕꢖ ꢒꢖ ꢋ ꢗ ꢒꢘꢑ ꢗꢀ ꢔꢎ ꢍꢑꢁ ꢆꢀꢋ ꢔꢒ

SLVS905 − DECEMBER 2008

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

TLV431A

or

TLV431B

160 kΩ

200

150

160 Ω

TEST CIRCUIT FOR EQUIVALENT INPUT NOISE VOLTAGE

10

100

1k

10k

100k

f − Frequency − Hz

Figure 11

10

POST OFFICE BOX 655303 • DALLAS, TEXAS 75265

ꢀ ꢁꢂꢃ ꢄ ꢅ ꢆꢇꢈ ꢅ ꢉ ꢀ ꢁꢂ ꢃꢄ ꢅꢊ ꢇꢈ ꢅ

ꢒ

ꢁ

ꢋ

ꢌꢇ

ꢂ

ꢋ

ꢁ

ꢀ

ꢆ

ꢍ

ꢎ

ꢆ

ꢏ

ꢐ

ꢑ

ꢒ

ꢀꢆ

ꢊ

ꢁ

ꢎ

ꢓ

ꢔ

ꢎ

ꢕ

ꢖ

ꢒ

ꢖ

ꢋ

ꢗ

ꢘ

ꢑ

ꢗ

ꢀ

ꢔ

ꢎ

ꢍ

ꢑ

ꢁ

ꢆꢀ

ꢋ

ꢔ

ꢒ

SLVS905 − DECEMBER 2008

PARAMETER MEASUREMENT INFORMATION

EQUIVALENT INPUT NOISE VOLTAGE

OVER A 10-s 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

TLV431A

or

TLV431B

1 MΩ

CRO

33 kΩ

16 Ω

TEST CIRCUIT FOR 0.1-Hz TO 10-Hz EQUIVALENT NOISE VOLTAGE

Figure 12

11

POST OFFICE BOX 655303 • DALLAS, TEXAS 75265

ꢀ ꢁꢂ ꢃ ꢄꢅ ꢆꢇ ꢈꢅ ꢉ ꢀ ꢁꢂ ꢃ ꢄꢅ ꢊꢇ ꢈꢅ

ꢁ ꢋꢌꢇꢂ ꢋꢁꢀꢆ ꢍꢎ ꢆꢏ ꢐ ꢑꢒꢀꢆꢊ ꢁꢎ ꢓ ꢔꢎ ꢕꢖ ꢒꢖ ꢋ ꢗ ꢒꢘꢑ ꢗꢀ ꢔꢎ ꢍꢑꢁ ꢆꢀꢋ ꢔꢒ

SLVS905 − DECEMBER 2008

PARAMETER MEASUREMENT INFORMATION

SMALL-SIGNAL VOLTAGE GAIN/PHASE MARGIN

vs

FREQUENCY

80

0°

I

T

= 10 mA

= 25°C

K

A

70

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

1k

10k

f − Frequency − Hz

100k

1M

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

1k

10k

100k

1M

10M

f − Frequency − Hz

Figure 14

12

POST OFFICE BOX 655303 • DALLAS, TEXAS 75265

ꢀ ꢁꢂꢃ ꢄ ꢅ ꢆꢇꢈ ꢅ ꢉ ꢀ ꢁꢂ ꢃꢄ ꢅꢊ ꢇꢈ ꢅ

ꢁꢋ ꢌꢇꢂ ꢋꢁꢀꢆꢍ ꢎ ꢆꢏꢐ ꢑꢒ ꢀꢆꢊꢁ ꢎ ꢓꢔ ꢎꢕꢖꢒ ꢖꢋ ꢗ ꢒꢘꢑ ꢗꢀ ꢔꢎ ꢍ ꢑꢁ ꢆꢀꢋ ꢔꢒ

SLVS905 − DECEMBER 2008

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

13

POST OFFICE BOX 655303 • DALLAS, TEXAS 75265

ꢀ ꢁꢂ ꢃ ꢄꢅ ꢆꢇ ꢈꢅ ꢉ ꢀ ꢁꢂ ꢃ ꢄꢅ ꢊꢇ ꢈꢅ

ꢁ ꢋꢌꢇꢂ ꢋꢁꢀꢆ ꢍꢎ ꢆꢏ ꢐ ꢑꢒꢀꢆꢊ ꢁꢎ ꢓ ꢔꢎ ꢕꢖ ꢒꢖ ꢋ ꢗ ꢒꢘꢑ ꢗꢀ ꢔꢎ ꢍꢑꢁ ꢆꢀꢋ ꢔꢒ

SLVS905 − DECEMBER 2008

†

PARAMETER MEASUREMENT INFORMATION

‡

STABILITY BOUNDARY CONDITION

(for TLV431B)

STABILITY BOUNDARY CONDITION

(for TLV431A)

15

12

9

15

12

9

T

A

= 25°C

I

K

= 15 mA Max

Stable

V

= V

REF

KA

Stable

V

= 2 V

= 3 V

KA

Stable

V

= 2 V

KA

V

KA

Unstable

6

T

= 25°C

= 15 mA MAX

A

3

I

K

V

KA

= 3 V

For V

= V ,

REF

KA

Stable for C = 1 pF to 10k nF

L

0

0.001

0.01

0.1

1

10

0.001

0.01

0.1

1

10

C

− Load Capacitance − µF

C

− Load Capacitance − µF

L

150 Ω

I

K

I

K

+

−

+

−

R1 = 10 kΩ

C

L

V

bat

V

bat

R2

TEST CIRCUIT FOR V

KA

= V

REF

TEST CIRCUIT FOR V

= 2 V, 3 V

KA

‡

The areas under the curves represent conditions that may cause the device to oscillate. For V

KA

= 2-V and 3-V curves, R2 and V were adjusted

bat

to establish the initial V

and I conditions with C = 0. V

and C then were adjusted to determine the ranges of stability.

KA

K

L

bat

L

Figure 17

†

Operation of the device at these or any other conditions beyond those indicated under “recommended operating conditions” is not implied.

14

POST OFFICE BOX 655303 • DALLAS, TEXAS 75265

ꢀ ꢁꢂꢃ ꢄ ꢅ ꢆꢇꢈ ꢅ ꢉ ꢀ ꢁꢂ ꢃꢄ ꢅꢊ ꢇꢈ ꢅ

ꢒ

ꢁꢋ

ꢌꢇ

ꢂ

ꢋ

ꢁ

ꢀ

ꢆ

ꢍ

ꢎ

ꢆ

ꢏ

ꢐ

ꢑ

ꢒ

ꢀꢆ

ꢊ

ꢁ

ꢎ

ꢓ

ꢔ

ꢎ

ꢕ

ꢖ

ꢒ

ꢖ

ꢋ

ꢗ

ꢘ

ꢑ

ꢗ

ꢀ

ꢔ

ꢎ

ꢍ

ꢑ

ꢁ

ꢆꢀ

ꢋ

ꢔ

ꢒ

SLVS905 − DECEMBER 2008

APPLICATION INFORMATION

~

V

120 V

I

−

+

P

~

V

3.3 V

O

P

Gate Drive

V

CC

Controller

V

FB

Current

Sense

TLV431A

or

GND

TLV431B

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 topology shown in

Figure 18.

15

POST OFFICE BOX 655303 • DALLAS, TEXAS 75265

PACKAGE OPTION ADDENDUM

www.ti.com

17-Jun-2009

PACKAGING INFORMATION

Orderable Device

TLV431AQDBVRQ1

TLV431BQDBVRQ1

TLV431BQDBZRQ1

Status ⁽¹⁾

ACTIVE

Package Package

Pins Package Eco Plan ⁽²⁾Lead/Ball Finish MSL Peak Temp ⁽³⁾

Qty

Type

Drawing

SOT-23

DBV

5

3

3000 Green (RoHS & CU NIPDAU Level-1-260C-UNLIM

no Sb/Br)

SOT-23

DBV

DBZ

3000 Green (RoHS & CU NIPDAU Level-1-260C-UNLIM

no Sb/Br)

3000 Green (RoHS & CU NIPDAU Level-1-260C-UNLIM

no Sb/Br)

⁽¹⁾The marketing status values are defined as follows:

ACTIVE: Product device recommended for new designs.

LIFEBUY: TI has announced that the device will be discontinued, and a lifetime-buy period is in effect.

NRND: Not recommended for new designs. Device is in production to support existing customers, but TI does not recommend using this part in

a new design.

PREVIEW: Device has been announced but is not in production. Samples may or may not be available.

OBSOLETE: TI has discontinued the production of the device.

(2)

Eco Plan - The planned eco-friendly classification: Pb-Free (RoHS), Pb-Free (RoHS Exempt), or Green (RoHS & no Sb/Br) - please check

http://www.ti.com/productcontent for the latest availability information and additional product content details.

TBD: The Pb-Free/Green conversion plan has not been defined.

Pb-Free (RoHS): TI's terms "Lead-Free" or "Pb-Free" mean semiconductor products that are compatible with the current RoHS requirements

for all 6 substances, including the requirement that lead not exceed 0.1% by weight in homogeneous materials. Where designed to be soldered

at high temperatures, TI Pb-Free products are suitable for use in specified lead-free processes.

Pb-Free (RoHS Exempt): This component has a RoHS exemption for either 1) lead-based flip-chip solder bumps used between the die and

package, or 2) lead-based die adhesive used between the die and leadframe. The component is otherwise considered Pb-Free (RoHS

compatible) as defined above.

Green (RoHS & no Sb/Br): TI defines "Green" to mean Pb-Free (RoHS compatible), and free of Bromine (Br) and Antimony (Sb) based flame

retardants (Br or Sb do not exceed 0.1% by weight in homogeneous material)

(3)

MSL, Peak Temp. -- The Moisture Sensitivity Level rating according to the JEDEC industry standard classifications, and peak solder

temperature.

Important Information and Disclaimer:The information provided on this page represents TI's knowledge and belief as of the date that it is

provided. TI bases its knowledge and belief on information provided by third parties, and makes no representation or warranty as to the

accuracy of such information. Efforts are underway to better integrate information from third parties. TI has taken and continues to take

reasonable steps to provide representative and accurate information but may not have conducted destructive testing or chemical analysis on

incoming materials and chemicals. TI and TI suppliers consider certain information to be proprietary, and thus CAS numbers and other limited

information may not be available for release.

In no event shall TI's liability arising out of such information exceed the total purchase price of the TI part(s) at issue in this document sold by TI

to Customer on an annual basis.

OTHER QUALIFIED VERSIONS OF TLV431A-Q1, TLV431B-Q1 :

Catalog: TLV431A, TLV431B

•

NOTE: Qualified Version Definitions:

Catalog - TI's standard catalog product

•

Addendum-Page 1

IMPORTANT NOTICE

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型号：	TLV431B-Q1
厂家：	TEXAS INSTRUMENTS
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