FA431ZF [FS]

PROGRAMMABLE PRECISION REFERENCES;


型号：	FA431ZF
厂家：	First Silicon Co., Ltd
描述：	PROGRAMMABLE PRECISION REFERENCES
文件：	总5页 (文件大小：218K)
中文：	中文翻译
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SEMICONDUCTOR

FA431Z/ZS/ZF

TECHNICAL DATA

PROGRAMMABLE PRECISION REFERENCES

The FA431Z/ZS/ZF integrated circuits are three-terminal

programmable shunt regulator diodes.

These monolithic IC voltage reference operate as a low

temperature coefficient zener which is programmable from

V_refto 40 volts with two external resistors.

DIM MILLIMETERS

4.70 MAX

4.80 MAX

3.70 MAX

0.55 MAX

1.00

These devices exhibit a wide operating current range of 1.0 to 100mA

with a typical dynamic impedance of 0.2Ω .

The characteristics of these references make them excellent

replacements for zener diodes in many applications

such as digital voltmeters, power supplies, and op amp circuitry.

The 2.5 volt reference makes it convenient to obtain a stable reference

from 5.0 volt logic supplies, and since the

1.27

0.85

0.45

14.00 +0.50

2.30

0.51 MAX

1. REFERENCE

2. ANODE

3. CATHODE

FA431 Series operates as a shunt regulator,

it can be used as either a positive or negative voltage reference.

TO-92

FEATURES

Divice Code Name :FA431 + V_refCode + Package Code

V_refCode

Tolerance (%)

ITEM

Package Code

Code

Package

DIM MILLIMETERS

2.93 0.20

TO-92

SOT-89

SOT-23

±2.0

±1.0

±0.5

1.30+0.20/-0.15

1.30 MAX

0.45

FA431

2.40+0.30/-0.20

1.90

0.95

0.13+0.10/-0.05

0.00 ~ 0.10

0.55

Low Dynamic Output Impedance : 0.2Ω (Typ.).

Sink Current Capability of 1.0 to 100mA.

0.20 MIN

1.00+0.20/-0.10

(Typ.).

Equivalent Full-Range Temperature Coefficient of 50ppm/℃

Temperature Compensated for Operation Over Full Rated Operating

Temperature Range.

1. REFERENCE

2. ANODE

3. CATHODE

Low Output Noise Voltage.

compliance with RoHS requirements.

We declare that the material of product

SOT-23

LINE UP

Operating Voltage(V)

Package

TO-92

Type No.

FA431Z

Mark

FA431ZA

FA431ZC

FA431ZF

FA431ZAF

FA431ZCF

FA431ZS

FA431ZAS

FA431ZCS

FA431ACS

2.5~36

SOT-89

SOT-23

DIM MILLIMETERS

4.70 MAX

2.50 0.20

1.70 MAX

0.45+0.15/-0.10

4.25 MAX

1.50 0.10

RA3

RA2

0.40 TYP

1.7 MAX

0.7 MIN

1. REFERENCE

2. ANODE

0.5+0.15/-0.10

3. CATHODE

SOT-89

2012. 05. 02

Revision No : 4

1/5

FA431Z/ZS/ZF

BLOCK DIAGRAM

Cathode (K)

Reference (R)

2.5V

ref

Anode (A)

MAXIMUM RATINGS (Ta=25℃)

(Full operating ambient temperature range applies unless otherwise noted.)

CHARACTERISTIC

Cathode To Anode Voltage

SYMBOL

V_KA

I_K

RATING

UNIT

℃

Cathode Current Range, Continuous

Reference Input Current Range, Continuous

Operating Junction Temperature

Operating Temperature

-100 ~ 150

-0.05 ~ 10

150

I_ref

T_j

T_opr

T_stg

-40 ~ 85

-65 ~ 150

700

℃

Storage Temperature

℃

FA431Z

P_D

Total Power Dissipation

FA431ZF (Note)

FA431ZS

800

200

Note) Package mounted on a ceramic board. (600 X 0.8

㎣

)

㎜

ELECTRICAL CHARACTERISTICS (Ta=25℃)

TEST

CIRCUIT

CHARACTERISTICS

FA431Z

SYMBOL

TEST CONDITION

MIN. TYP. MAX. UNIT

(2%)

2.440 2.495 2.550

2.470 2.495 2.520

2.4825 2.495 2.5075

FA431ZA (1%)

FA431ZC (0.5%)

FA431ACS (0.5%)

Reference Input

Voltage

V_ref

Figure 1

V_KA=V_ref, I_K=10mA

2.500 2.512

2.487

Reference Input Voltage

Figure 1

(Note 1)

V_KA=V_ref, I_K=10mA

ΔV

ref

Deviation Over Temperature Range

ΔV_KA

-1.4

-2.7

Ratio of Change in Reference Input

Voltage to Change in Cathode to

Anode Voltage

10V ~ V_ref

ΔV_KA

36V ~ 10V

ΔV /

ref

I_K=10mA

Figure 2

mV/V

ΔV_KA

-1.0

0.5

0.4

-2.0

2.0

1.2

I_ref

Reference Input Current

Figure 2

I_K=10mA, R1=10kΩ , R2=∞

μA

Reference Input Current

ΔI_ref

I_K=10mA, R1=10kΩ , R2=∞

Deviation Over Temperature Range

I_min

I_off

V_KA=V_ref

Minimum Cathode Current For Regulation

Off-State Cathode Current

Figure 1

Figure 3

0.25

170

0.5

V_KA=40V, V_ref=0V

900

Figure 1

(Note 2)

V_KA=V_ref, I_K=1.0 ~ 100mA,

Ω

Z_ka

Dynamic Impedance

0.27

0.5

f ≤1.0kHz

2012. 05. 02

Revision No : 4

2/5

FA431Z/ZS/ZF

FIGURE 3-TEST CIRCUIT FOR I

FIGURE 1-TEST CIRCUIT FOR V_KA= V

ref

off

V_KA

Input

I_K

off

ref

Example : ΔV_ref= 8.0mV and slope is positive,

V_refat 25℃=2.495V, ΔTa=70℃

FIGURE 2-TEST CIRCUIT FOR V_KA＞V

ref

Input

V_KA

0.008 10⁶

I_K

αV_ref

= 45.8 ppm/℃

70 (2.495)

ref

V_KA= V ( 1+

) + I

Note 2: The dynamic impedance Z_kais defined as:

ref

ΔVKA

|Z_ka| =

ΔIk

ref

When the device is programmed with two external

resistors, R1 and R2, (refer to Figure 2) the total

dynamic impedance of the circuit is defined as:

Note 1:

The deviation parameter ΔV_refis defined as the differences

between the maximum and minimum values obtained over the

full operating ambient temperature range that applies.

|Z_ka’| = |Z_ka| (1+

)

ΔV = V

ref

ref (Max.)

Max.

Min.

ref

- V (Min.)

ref

ΔTa = T₂- T₁

AMBIENT TEMPERATURE

The average temperature coefficient of the Reference

input voltage, ΔV_ref, is defined as:

ΔV_ref

(

)

ppm

V_refat 25℃

ΔTa

αV_ref

(

) =

℃

ΔV_ref

10⁶

ΔTa(V_refat 25℃)

αV_refcan be positive or negative depending on whether

V_refMin. or V_refMax. occurs at the lower ambient temperature.

2012. 05. 02

Revision No : 4

3/5

FA431Z/ZS/ZF

- V

K KA

150

100

800

600

ref

Ta=25 C

400

200

-50

-200

-100

-2 0

-1 0

1 0

2 0

3 0

-1 0

1 0

2 0

3 0

CATHODE VOLTAGE V_KA(V)

Zka - f

100

ref

- V

I =1 0mA~100mA

Ta=25 C

=10mA

Ta=25 C

-8 0

1 0

0 1

-16

-24

-32

1 0k

10k

100k

1 0M

10M

FREQUENCY f (Hz)

CATHODE VOLTAGE V_KA(V)

PULSE RESPONSE

Ta=25 C

3 0

2 0

1 0

- f

OUTPUT

=10mA

Ta=25 C

5 0

INPUT

4 0

8 0

TIME t (�s)

-10

- Ta

1 0k

10k

100k

1 0M

10M

1000

900

800

700

600

500

400

300

200

100

FREQUENCY f (Hz)

FA431ZF

FA431ZS

FA431Z

100

125

150

175

AMBIENT TEMPERATURE Ta ( C)

2012. 05. 02

Revision No : 4

4/5

FA431Z/ZS/ZF

PRECAUTION FOR USE

SOLDERING

Flat Package (SMD Package)

Elements mounting styles of electronic devices are gaining in further diversification over recent

years, and needs for components are all the more expanding in varieties. Especially, surface mounting

is steadily penetrating into industrial segments as a world-wide popular technical trend.

Although exposure to high temperature is inevitable during soldering we recommend limiting the soldering

temperature to low levels as shown in figure for the sake of retaining inherent excellent reliability.

240

210

150

Time (sec.)

60 sec.

Within 10 sec.

Within 30 sec.

Fig. 6

(a) When employing solder reflow method

Atmospheric temperature around resin surfaces must be less than 240 , not exceeding the time length of 10 sec.

Recommend temperature profile

Precautions on heating method

When resin in kept exposed to high temperature for a long time, device reliability may be marred.

Therefore, it is essential to complete soldering in the shortest time possible to prevent temperature of resin from rising.

(b) When employing halogen lamps or infrared-ray heaters

When halogen lamps or infrared-ray heaters are used, avoid direct irradiation onto resin surfaces; such devices cause

extensive localized temperature rise.

Please keep a reflow solder operating when SMD package’s soldering.

2012. 05. 02

Revision No : 4

5/5

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