RL431BA_技术文档

Page No. : 1/1

RL431 Series Pin Assignment

RL431 Series

3-Lead Plastic SOT-23

Package Code: N

Pin 1: Reference

Pin 2: Cathode

3

Adjustable Shunt Regulator

2

1

Pin 3: Anode

Description

The RL431 series are three-terminal adjustable regulators with

guaranteed thermal stability over applicable temperature ranges. The

output voltage may be set to any value between V_REF(approximately 2.495

volts) and 36 volts with two external resistors. These devices have a

typical dynamic output impedance of 0.2Ω. Active output circuitry provides

a very sharp turn-on characteristic, making these devices excellent

replacement for zener diodes in many applications.

3-Lead Plastic TO-92

Package Code: A

Pin 1: Reference

Pin 2: Anode

Pin 3: Cathode

3

2

1

Features

• Programmable output voltage

• Temperature coefficient is 50ppm/^oC typical

• Temperature compensated for operation over full temperature range

• Low output noise voltage

• Fast turn on response

Absolute Maximum Ratings

(Operating temperature range applies unless otherwise specified)

Characteristics

Cathode Voltage

Symbol

V_KA

Value

Unit

V

36

Cathode Current Range (Continuous)

Reference Input Current Range

I_K

-100~+150

0.05~+10

mA

I_REF

SOT-23

280

770

Power Dissipation

P_D

mW

TO-92

Operating Temperature Range (Max.)

Storage Temperature Range

*. RL431CN, RL431CA

T_opr

T_stg

-40~+120 *

-65~+150

^oC

Operating Conditions

Characteristics

Cathode Voltage

Symbol

V_KA

Min.

V_REF

1

Max.

36

Unit

V

Cathode Current Range (Continuous)

I_K

100

mA

DS-RS431L-01 October, 2006

www.Orister.com

Page No. : 2/2

Functional Block Diagram & Symbol

Functional Block Diagram

Symbol

Cathode

Anode

+

-

Cathode

Reference

V^REF

Anode

Test Circuits

Fig 1. V_K=V_REF

Fig 2. V_K>V_REF

Fig 3. Off-State Current

IN

I_I

IN

V_K

IN

V_K

I_REF

R₁

I_REF

I_K

I_OFF

I_K

V_REF

R₂

V_REF

Note: V_K=V_REF(1+R₁/R₂)+I_REFxR₁

Electrical Characteristics ^(T_A⁼²⁵^o^{C unless otherwise specified)}

Characteristics

Symbol

Test Conditions

Min

Typ

Max

Unit

RL431BN/BA (1.0%)

RL431CN/CA (0.5%)

2.470 2.495 2.520

2.483 2.495 2.507

Reference Input

Voltage ^(Fig1)

V_REF

V_K=V_REF, I_K=10mA

V

V_K=V_REF, I_K=10mA

T_min≤T_a≤T_max

I_K=10mA,

Deviation of Reference Input Voltage

Over-Temperature ^(Fig1)

V_REF(dev)

-

4

17

-2.7

-2.0

4

mV

mV/V

uA

-1.4

-1.0

2

ΔV_REF

ΔV_K

/

ΔV_K=10V to V_REF

I_K=10mA,

Ratio of Change in Reference Input Voltage

to the Change in Cathode Voltage ^(Fig2)

ΔV_K=36V to 10V

I_K=10mA, R₁=10kΩ,

R₂=∞

Reference Input Current ^(Fig2)

I_REF

I_K=10mA, R₁=10kΩ,

R₂=∞, T_a=Full Range

V_K=V_REF

Deviation of Reference Input Current Over

Full Temperature Range ^(Fig2)

Minimum Cathode Current for Regulation ^(Fig1)I_K(min)

Off-State Cathode Current ^(Fig3)

I_REF(dev)

0.4

1.2

uA

-

0.4

0.1

1.0

mA

uA

I_K(off)

V_K=36V, V_REF=0

V_K=V_REF, f≤1kHz

I_K=1 to 100mA

Dynamic Output Impedance ^(Fig1)

Z_K

-

0.2

0.5

Ω

DS-RS431L-01 October, 2006

www.Orister.com

Page No. : 3/3

Characteristics Curve

Cathode Current & Cathode Voltage

Change in Reference Input Voltage

& Cathode Voltage

150

125

100

75

5

0

-5

-10

-15

-20

-25

-30

-35

-40

50

25

0

-25

-50

-75

-100

o

K

REF

K

V =V

, Ta=25 C

I =10mA, Ta=25 C

Test Circuit (Fig1)

Test Circuits (Fig2)

-2

-1

0

1

2

3

0

10

20

30

40

50

Cathode Voltage (V)

Reference Input Voltage & Temperature

Cathode Current & Cathode Voltage

1000

800

600

400

200

0

2.58

2.56

2.54

2.52

2.50

2.48

2.46

2.44

2.42

2.40

K

REF K

, I =10mA

V =V

o

-200

-400

K

REF

, Ta=25 C

V =V

Test Circuit (Fig1)

-40

-20

0

20

40

60

80

100

120

-2

-1

0

1

2

3

Temperature (^oC)

Cathode Voltage (V)

Small Signal Voltage Amplification &

Frequency

60

50

40

30

20

10

0

Vout

240

Ik

15K

+

10uF

8.2K

GND

-10

1000

10000

100000

1000000

10000000

Frequency (Hz)

DS-RS431L-01 October, 2006

www.Orister.com

Page No. : 4/4

Typical Application

Fig 4. Shunt Regulator

Fig 5. High Current Shunt Regulator

Vcc

Vout

Vcc

Vout

R1

R2

R1

R2

Vout=(1+R₁/R₂)V_REF

Fig 6. Output Control of a Three-Terminal Fixed

Regulator

Fig 7. Series Pass Regulator

Vcc

Vout

AX7805

IN

OUT

Vcc

Vout

R1

R2

COMMON

R1

R2

Vout=(1+R₁/R₂)V_REF; V_out(min)=V_REF+5V

Fig 8. Current Limiter or Current Source

Vout=(1+R₁/R₂)V_REF; V_out(min)=V_REF+V_BE

Fig 9. Constant Current Sink

Vcc

Isink

Vcc

Iout

RCL

Rs

Iout=V_REF/R_CL

Isink=V_REF/R_S

DS-RS431L-01 October, 2006

www.Orister.com

Page No. : 5/5

SOT-23 Dimension

DIM

A

B

C

D

G

H

J

K

L

S

V

Min.

Max.

3.04

1.60

1.30

0.50

2.30

0.10

0.177

0.67

1.15

2.75

0.65

Marking:

2.80

1.20

0.89

0.30

1.70

0.013

0.085

0.32

0.85

2.10

0.25

A

L

4 3 1 L

3

B S

Note: Pb-free product can distinguish by the green

label or the extra description on the right

side of the label.

1

2

Pin Style: 1.Reference 2.Cathode 3.Anode

V

G

Material:

*: Typical, Unit: mm

• Lead solder plating: Sn60/Pb40 (Normal),

Sn/3.0Ag/0.5Cu or Pure-Tin (Pb-free)

• Mold Compound: Epoxy resin family,

flammability solid burning class: UL94V-0

C

D

H

K

J

3-Lead SOT-23 Plastic

Surface Mounted Package

Package Code: N

TO-92 Dimension

DIM

A

B

C

D

E

F

G

H

Min.

4.33

12.70

0.36

-

3.36

0.36

-

Max.

4.83

-

0.56

*1.27

3.76

0.56

*2.54

*1.27

*5°

Marking:

α2

α3

A

R S

4 3 1 L

A

B

1

2

3

Date Code

Control Code

Note: Green label is used for pb-free packing

Pin Style: 1.Reference 2.Anode 3.Cathode

I

C

E

D

α1

α2

α3

*2°

Material:

• Lead solder plating: Sn60/Pb40 (Normal),

Sn/3.0Ag/0.5Cu or Pure-Tin (Pb-free)

• Mold Compound: Epoxy resin family,

flammability solid burning class: UL94V-0

*: Typical, Unit: mm

H

G

α1

I

F

3-Lead TO-92 Plastic Package

Package Code: A

Ordering Information

Package

SOT-23

TO-92

V_REF: 2.5±1%

RL431BN

V_REF: 2.5±0.5%

RL431CN

RL431BA

RL431CA

DS-RS431L-01 October, 2006

www.Orister.com

Page No. : 6/6

Soldering Methods for Orister’s Products

1. Storage environment: Temperature=10^oC~35^oC Humidity=65%±15%

2. Reflow soldering of surface-mount devices

Figure 1: Temperature profile

t

P

Critical Zone

to T

TP

T

L

P

Ramp-up

TL

t

L

Tsmax

Tsmin

t

S

Preheat

Ramp-down

25

t 25^oC to Peak

Time

Profile Feature

Average ramp-up rate (T_Lto T_P)

Preheat

Sn-Pb Eutectic Assembly

Pb-Free Assembly

<3^oC/sec

- Temperature Min (Ts_min

)

100^oC

150^oC

200^oC

- Temperature Max (Ts_max

- Time (min to max) (ts)

Tsmax to T_L

)

60~120 sec

60~180 sec

- Ramp-up Rate

<3^oC/sec

Time maintained above:

- Temperature (T_L)

- Time (t_L)

183^oC

217^oC

60~150 sec

240^oC +0/-5^oC

60~150 sec

260^oC +0/-5^oC

Peak Temperature (T_P)

Time within 5^oC of actual Peak

10~30 sec

20~40 sec

Temperature (t_P)

Ramp-down Rate

<6^oC/sec

Time 25^oC to Peak Temperature

<6 minutes

<8 minutes

3. Flow (wave) soldering (solder dipping)

Products

Pb devices.

Peak temperature

245^oC ±5^oC

260^oC +0/-5^oC

Dipping time

5sec ±1sec

Pb-Free devices.

DS-RS431L-01 October, 2006

www.Orister.com

Page No. : 7/7

Important Notice:

• All rights are reserved. Reproduction in whole or in part is prohibited without the prior written approval of Orister Corporation.

• Orister Corporation reserves the right to make changes to its products without notice.

• Orister Corporation products are not warranted to be suitable for use in Life-Support Applications, or systems.

• Orister Corporation assumes no liability for any consequence of customer product design, infringement of patents, or application assistance.

DS-RS431L-01 October, 2006

www.Orister.com


型号：	RL431BA
厂家：	ORISTER CORPORATION
描述：	Adjustable Shunt Regulator 可调并联稳压器稳压器
文件：	总7页 (文件大小：173K)
中文：	中文翻译
下载：	下载PDF数据表文档文件

RL431BA [ORISTER]

相关型号：

RL431BN

RL431CA

RL431CN

RL4504-3.28-59-D1

RL453

RL453C

RL453M

RL48-19/12

RL48-19/12ML

RL48-19/14

RL48-19/14ML

RL48-1912ML