SG431AS [KODENSHI]

Programmable Voltage Reference;


型号：	SG431AS
厂家：	KODENSHI KOREA CORP.
描述：	Programmable Voltage Reference
文件：	总14页 (文件大小：471K)
中文：	中文翻译
下载：	下载PDF数据表文档文件

SG431/SGF431

Programmable Voltage Reference

◈Description

The SG431 series are 3-terminal precision shunt regulators that are programmable over a wide voltage range of

2.495V to 36V with ±0.3%, ±0.5%, ±1.0% tolerance. The SG431 series have a low dynamic impedance of 0.15Ω.

These features make the SG431 series an excellent replacement for zener diodes in numerous applications circuits

that require a precision reference voltage.

◈Features

 Programmable output voltage from 2.495V to 36V

 Voltage reference tolerance : ±0.3%, ±0.5%, ±1.0%

 Cathode current capability of 1mA to 100mA

◈ Pin Assignment

(Top View)

(3)A

(1)K

(1)R

(2)R

(2)K

A K

PKG : SOT-23

PKG : SOT-89

PKG : SOT-23

Apply Device : SG431xS

Apply Device : SG431xF

Apply Device : SGF431xS

(Marking Side View)

(Top View)

R A K

PKG : TO-92M

PKG : TO-92

PKG : SOT-25

Apply Device : SG431xM

Apply Device : SG431x

Apply Device : SG431xN

[ K : Cathode, A: Anode, R : Reference ]

KSD-I5C013-001

SG431/SGF431

◈ Symbol

◈ Functional block diagram

Cathode(K)

Reference(R)

–

Reference(R)

VREF=2.495V

Anode(A)

◈ Ordering Information

Vref Tolerance

PKG Type

Device Name

SG431A

Marking

SG431 A

4JA□^ꢀ)△

4LA□^ꢀ)△

L4A□^ꢀ)

TO-92

TO-92M

SOT-23

SOT-25

SOT-89

TO-92

SG431AM

SG431AS¹⁾

SGF431AS^ꢁ)

SG431AN

SG431AF

±1%

SG431A

SG431 B

SG431B

TO-92M

SOT-23

SOT-25

SOT-89

SOT-23

SG431BM

SG431BS¹⁾

SGF431BS^ꢁ)

SG431BN

SG431BF

4JB□^ꢀ)△

4LB□^ꢀ)△

L4B□^ꢀ)

±0.5%

±0.3%

SG431B

SG431CS¹⁾

SGF431CS^ꢁ)

4JC□^ꢀ)△

4LC□^ꢀ)△

1) SG431xS Pin Connection : (1) Cathode, (2) Reference, (3) Anode

2) SGF431xS Pin Connection : (1) Reference, (2) Cathode, (3) Anode

3) □ : Year & Week Code

4) △ : Machine Code [SOT-23 PKG.]

KSD-I5C013-001

SG431/SGF431

◈ Absolute maximum ratings

Characteristic

[Ta=25℃]

Symbol

V_KA

Rating

Unit

Cathode to Anode voltage

Cathode current Range (Continuous)

Reference input current Range

SOT-23

-100~150

-0.05~10

350

I_K

I_ref

P_D(Note1)

P_D(Note2)

SOT-25

400

SOT-89

TO-92

500

Power Dissipation

700

TO-92M

P_D(Note2)

400

Junction Temperature

T_J

150

℃

Operating temperature range

Storage temperature range

T_opr

T_stg

-40 ~ +85

-55 ~ +150

Note 1 : Mounted on a glass epoxy PCB board (25.4 × 25.4mm).T_A=25℃

Note 2 : T_A=25℃

◈ Recommended operating conditions

Rating

Characteristic

Symbol

Unit

Min.

Max.

Cathode to Anode voltage

Cathode current

V_KA

I_K

V_ref

100

◈ Electrical Characteristics (Ta=25℃, unless otherwise noted.)

Characteristic

Symbol

Condition

Min. Typ. Max. Unit

SG431C

SG431B

SG431A

2.487

2.503

Reference voltage (Fig.1)

V_ref

V_KA=V_ref, I_K=10mA

2.482 2.495 2.508

2.470

2.520

Reference input voltage

deviation over temperature

(Fig.1, Note1,2)

_KA=V_ref, I_K=10mA

V_ref

@ -40˚C ≤ Ta ≤ 85˚C

Ratio of delta reference input

voltage to delta cathode

voltage (Fig.2)

I_K=10mA

V_ref≤V_KA≤36V

-1.0

-2.7

mV/V

V_KA

Reference current (Fig.2)

I_ref

1.8

0.4

4.0

2.5

μΑ

I_K=10mA, R1=10K, R2=

Reference input current

deviation over temperature

(Fig.2, Note 1,2)

I_K=10mA, R1=10K, R2=

@ -40˚C ≤ Ta ≤ 85˚C

I_ref

Minimum cathode current

for regulation

I_K(MIN)

V_KA=V_ref

0.35

0.6

mΑ

Off-state cathode current (Fig.3)

Dynamic impedance (Fig.1, Note3)

I_K(off)

Z_KA

V_KA=36V, V_ref=0V

2.7

1000

0.5

V_KA=V_ref, f  1.0KHz

1.0mA ≤ I_K≤ 100mA

0.15



KSD-I5C013-001

SG431/SGF431

Fig. 2 Test circuit for V_KA>V_ref

Input V_KA

Fig. 1 Test circuit for V_KA=V_ref

Input V_KA

Fig. 3 Test circuit for I_K(off)

Input

V_KA

I_K(off)

I_K

I_ref

V_ref



(1 ¹)  I_ref R₁

V_KAV_ref

R₂

Note.

1. Ambient temperature range: T_LOW= -40℃, T_High= 85℃

2. The deviation parameters △V_refand △I_refare defined as the difference between the maximum value and minimum value

obtained over the full operating ambient temperature range that applied.

∆V_ref= V_refMax – V_refMin

∆Ta = T₂– T₁

Ambient Temperature

The average temperature coefficient of the reference input voltage, αV_refis defined as:

ΔV_ref

(

×10⁶)

ppm

(

= 25℃)

ΔT_a

V_refT_a

(

) =

V_ref

℃

Example : △V_ref= 30mV and the slope is positive,

△V_ref@ 25℃ = 2.495V

△Ta = 70℃

0.03

(

)×10⁶

ppm

2.495

αV_ref

(

) =

= 171ppm /℃

℃

3. The dynamic impedance Z_KAis defined as:

ΔV_KA

ΔI_K

Ζ_KA

When the device is operating with two external resistors, R1 and R2, (refer to Fig.2) the total dynamic impedance of the circuit

is given by:

R₁

Ζ_KA= Ζ_KA×(1+

)

R ₂

KSD-I5C013-001

SG431/SGF431

◈ Electrical Characteristic Curves

Fig.5 I_refvs T_A

Fig.4 V_refvs T_A

ꢄꢉꢃ

ꢂꢉꢃ

ꢅꢉꢂ

ꢅꢉꢃ

ꢈꢉꢂ

ꢈꢉꢃ

ꢁꢉꢂ

ꢁꢉꢃ

ꢄꢉꢂ

ꢄꢉꢃ

ꢃꢉꢂ

ꢃꢉꢃ

ꢃꢉꢆ

V_KA=V_ref

I_K=10mA

R1=10KΩ

R2=∞

ꢃꢉꢇ

I_K=10mA

ꢃꢉꢅ

ꢃꢉꢁ

ꢃꢉꢃ

ꢀꢃꢉꢁ

ꢀꢃꢉꢅ

ꢀꢃꢉꢇ

ꢀꢃꢉꢆ

ꢀꢄꢉꢃ

ꢀꢇꢃ ꢀꢅꢃ ꢀꢁꢃ

ꢃ

ꢁꢃ

ꢅꢃ

ꢇꢃ

ꢆꢃ

ꢄꢃꢃ

ꢀꢇꢃ ꢀꢅꢃ ꢀꢁꢃ

ꢃ

ꢁꢃ

ꢅꢃ

ꢇꢃ

ꢆꢃ

ꢄꢃꢃ

Ambient Temperature - T_A[℃]

Fig.6 I_KAvs V_KA

Fig.7 I_KAvs V_KA

ꢄꢂꢃ

ꢄꢁꢂ

ꢄꢃꢃ

ꢊꢂ

ꢆꢃꢃ

ꢊꢃꢃ

ꢇꢃꢃ

ꢂꢃꢃ

ꢅꢃꢃ

ꢈꢃꢃ

ꢁꢃꢃ

ꢄꢃꢃ

ꢃ

V_KA=V_ref

T_A=25℃

ꢂꢃ

ꢁꢂ

ꢃ

ꢀꢁꢂ

ꢀꢂꢃ

ꢀꢊꢂ

ꢀꢄꢃꢃ

ꢀꢄꢁꢂ

ꢀꢄꢂꢃ

ꢀꢄꢃꢃ

ꢀꢁꢃꢃ

ꢀꢁ

ꢀꢄ

ꢃ

ꢄ

ꢁ

ꢈ

ꢀꢄ

ꢃ

ꢄ

ꢁ

ꢈ

Cathode Voltage - V_KA[V]

Fig.8 I_offvs T_A

Fig.9 △V_refvs V_KA

ꢃ

ꢀꢂ

ꢅꢉꢃ

ꢈꢉꢂ

ꢈꢉꢃ

ꢁꢉꢂ

ꢁꢉꢃ

ꢄꢉꢂ

ꢄꢉꢃ

ꢃꢉꢂ

ꢃꢉꢃ

V_KA= 36V

V_ref=0V

I_K=10mA

T_A=25℃

ꢀꢄꢃ

ꢀꢄꢂ

ꢀꢁꢃ

ꢀꢁꢂ

ꢀꢇꢃ ꢀꢅꢃ ꢀꢁꢃ

ꢃ

ꢁꢃ

ꢅꢃ

ꢇꢃ

ꢆꢃ

ꢄꢃꢃ

ꢃ

ꢅ

ꢆ

ꢄꢁ ꢄꢇ ꢁꢃ ꢁꢅ ꢁꢆ ꢈꢁ ꢈꢇ ꢅꢃ

Cathode Voltage - V_KA[V]

Ambient Temperature - T_A[℃]

KSD-I5C013-001

SG431/SGF431

◈ Electrical Characteristic Curves

Fig.10 A_Vvs f

ꢇꢃ

OUTPUT

I_K=10mA

ꢂꢃ

10kΩ

T_A=25℃

220Ω

ꢅꢃ

ꢈꢃ

ꢁꢃ

ꢄꢃ

ꢃ

10μF

GND

ꢄk

ꢄꢃk

ꢄꢃꢃk

ꢄꢃꢃꢃk

ꢄꢃꢃꢃꢃk

Voltage Gain Test Circuit

Frequency - f [Hz]

Fig.11 |Z_KA| vs f

500Ω

Vout

ꢄꢃꢃ

ꢄꢃ

ꢄ

Rs=100Ω

I_K=10mA

T_A=25℃

1uF

Vin

GND

ꢃꢉꢄ

ZKA = Vout/Vin x Rs

ꢄk

ꢄꢃk

ꢄꢃꢃk

ꢄꢃꢃꢃk

ꢄꢃꢃꢃꢃk

Dynamic Impedance Test Circuit

Frequency - f [Hz]

KSD-I5C013-001

SG431/SGF431

Fig.12 Pulse Response

220Ω

OUTPUT

0.9V/Div

5V/Div

Output

Pulse

Generator

f = 100kHz

50Ω

GND

Input

Pulse Response Test Circuit

Time [µS]

KSD-I5C013-001

SG431/SGF431

◈ Typical Application

Vcc

Vout

Vin

Vin < Vref -> Vout=Vcc

Vin > Vref -> Vout≒2.0V

Vth=Vref

Vout 



1



Vref

Fig15. Single-Supply Comparator with

Temperature-Compensated Threshold

Fig14. Shunt Regulator

Vcc

Isink

Iout

RCL

Vcc

Iout = Vref / RCL

Isink = Vref / RS

Fig17. Constant Current Source

Fig16. Constant Current Sink

Vcc

Vout

Vcc

Vout

Vout 



1



Vref

Vin(min) = Vout + Vbe

Vout(min) = Vref + Vbe

Vout 



1



Vref

Fig18. Series Pass Regulator

Fig19. High Currnet Shunt Regulator

KSD-I5C013-001

SG431/SGF431

◈ SOT-89 Outline Dimension (unit : mm)

※ Recom m end PCB solder land

[ Unit: m m ]

KSD-I5C013-001

SG431/SGF431

◈ SOT-23 Outline Dimension (unit : mm)

※ Recom m end PCB solder land

[ Unit: m m ]

KSD-I5C013-001

SG431/SGF431

◈ SOT-25 Outline Dimension (unit : mm)

※ Recom m end PCB solder land

[ Unit: m m ]

KSD-I5C013-001

SG431/SGF431

◈ TO-92 Outline Dimension (unit : mm)

KSD-I5C013-001

SG431/SGF431

◈ TO-92M Outline Dimension (unit : mm)

KSD-I5C013-001

SG431/SGF431

The AUK Corp. products are intended for the use as components in general electronic

equipment (Office and communication equipment, measuring equipment, home

appliance, etc.).

Please make sure that you consult with us before you use these AUK Corp. products

in equipments which require high quality and / or reliability, and in equipments which

could have major impact to the welfare of human life(atomic energy control, airplane,

spaceship, transportation, combustion control, all types of safety device, etc.). AUK

Corp. cannot accept liability to any damage which may occur in case these AUK Corp.

products were used in the mentioned equipments without prior consultation with AUK

Corp..

Specifications mentioned in this publication are subject to change without notice.

KSD-I5C013-001

相关型号：