LX6431A Microsemi Corporation, LX6431A Datasheet

LX6431A

Manufacturer Part Number

LX6431A

Description

PRECISION PROGRAMMABLE REFERENCES

Manufacturer

Microsemi Corporation

Datasheet

1.LX6431A.pdf (11 pages)

Available stocks

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Part Number

Manufacturer

Quantity

Price

Company:

Bonase Electronics (HK) Co., Limited

Part Number:

LX6431ACLP

Manufacturer:

Quantity:

50 210

Company:

Bonase Electronics (HK) Co., Limited

Part Number:

LX6431AIDM

Manufacturer:

Microsemi Analog Mixed Signal

Quantity:

135

Company:

Bonase Electronics (HK) Co., Limited

Part Number:

LX6431AILP

Manufacturer:

Microsemi

Quantity:

50 210

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Rev. 1.4

H E

The LX6431 series precision adjustable

three terminal shunt voltage regulators are

pin-to-pin compatible with the industry

standard TL431, but with significant

improvements. The LX6431 design has

eliminated regions of instability common

to older generation shunt regulator

products like the TL431. Designs are

made simpler by eliminating the task of

insuring capacitive loads, and output

voltage and cathode currents don't

combine for unstable operation. The

capacitor value is chosen simply to give

the best load transient response without

the possibility of instability. A lower

reference input current allows the use of

higher value reference divider resistors,

NOTE: For current data & package dimensions, visit our web site: http://www.linfinity.com.

6/99

N F I N I T E

2.5

3.75

11861 W

U T P U T

O W E R

6.25

(V ) Output Voltage - (V)

ESTERN

-40 to 85

0 to 70

D E S C R I P T I O N

O L T A G E

7.5

O F

(°C)

I N

Note: All surface-mount packages are available in Tape & Reel.

VENUE

8.75

PA C K A G E O R D E R I N F O R M A T I O N

Append the letter "T" to part number. (i.e. LX5212CDPT)

N N O V A T I O N

Tolerance

I N I T Y

TO-92 (LP) package also available in ammo-pack.

, G

Initial

R R O R D U E T O

0.4%

reducing the current drain from batteries

in portable equipment as well as reducing

the voltage programming errors due to

the impedance of the divider network

(See Product Highlight figure below). In

addition, the LX6431B has an improved

initial accuracy of 0.4%, and the output

voltage is programmable by using two

external resistors from 2.5V to 36V.

impedance for improved load regulation.

The typical output impedance of these

devices is 100m . The reduced

reference input bias current and minimum

operating currents make these devices

suitable for portable and micropower

applications.

ARDEN

These devices offer low output

P R O D U C T H I G H L I G H T

11.25

ROVE

I C R O E L E C T R O N I C S

12.5

Plastic SOIC

8-pin

LX6431ACDM

LX6431BCDM

, CA. 92841, 714-898-8121, F

LX6431AIDM

LX6431BIDM

LX6431CDM

LX6431IDM

R E F

13.75

LX6431/LX6431A/LX6431B

R E C I S I O N

R O D U C T I O N

Plastic TO-92

3-pin

Y P I C A L

LX6431ACLP

LX6431BCLP

LX6431AILP

LX6431BILP

LX6431CLP

LX6431ILP

R O G R A M M A B L E

N C

LX6431

E F E R E N C E

: 714-893-2570

R O G R A M M A B L E

Unconditionally Stable For All Cathode To

Anode Capacitance Values

Reduced Reference Input Current Allowing

The Use Of Higher Value Divider Resistors

(0.5µA Max.)

Initial Voltage Reference Accuracy Of 0.4%

(LX6431B)

Sink Current Capability 0.6mA to 100mA

Typical Output Dynamic Impedance Less

Than 100m

Adjustable Output Voltage From 2.5V to

36V

K E Y F E A T U R E S

A T A

GND

I R C U I T

E F E R E N C E S

H E E T

O L T A G E

Related parts for LX6431A

LX6431A Summary of contents

Page 1

... Than 100m Adjustable Output Voltage From 2.5V to 36V LX6431 R2 GND Plastic TO-92 LP 3-pin LX6431CLP LX6431ACLP LX6431BCLP LX6431ILP LX6431AILP LX6431BILP 714-893-2570 ...

... LX6431/LX6431A/LX6431B ABSOLUTE MAXIMUM RATINGS Cathode to Anode Voltage (V ) ................................................................... -0.3V to 37V KA Reference Input Current (I ) .................................................................... -50µA to 10µA REF Continuous Cathode Current (I ) ......................................................... -100mA to 150mA K Operating Junction Temperature Plastic (DM & LP Packages) ................................................................................. 150°C Storage Temperature Range ...................................................................... -65° ...

Page 3

... (Unless otherwise specified, these specifications apply over the operating ambient temperatures for LX6431C/LX6431AC/LX6431BC with 0°C 70°C, LX6431I/LX6431AI/LX6431BI with -40°C Parameter ...

Page 4

... LX6431/LX6431A/LX6431B GRAPH / CURVE INDEX Characteristic Curves FIGURE # 1. REFERENCE VOLTAGE vs. FREE-AIR TEMPERATURE 2. REFERENCE CURRENT vs. FREE-AIR TEMPERATURE 3. CATHODE CURRENT vs. CATHODE VOLTAGE 4. OFF-STATE CATHODE CURRENT vs. FREE-AIR TEMPERATURE 5. RATIO OF DELTA REFERENCE VOLTAGE TO DELTA CATHODE VOLTAGE vs ...

Page 5

Page 6

... LX6431/LX6431A/LX6431B FIGURE 5. — RATIO OF DELTA REFERENCE VOLTAGE TO DELTA CATHODE VOLTAGE vs. FREE-AIR TEMPERATURE 36V KA -0.1 -0.2 -0.3 -0.4 -0.5 -0.6 -50 - Ambient Temperature - (° ...

Page 7

... GND b) FIGURE 7 — Comparison of reference resistor values between an LX6431B and an TL1431, resistors used with the LX6431B are 5 times higher in value. Copyright © 1999 Rev. 1.4 6/99 LX6431/LX6431A/LX6431B ...

Page 8

... LX6431/LX6431A/LX6431B Input V REF FIGURE 9 — TEST CIRCUIT FOR ...

Page 9

Page 10

... LX6431/LX6431A/LX6431B FIGURE 13. — SMALL-SIGNAL VOLTAGE AMPLIFICATION vs. FREQUENCY -10 10k 1k 100k (f) Frequency - (Hz) FIGURE 14. — REFERENCE IMPEDANCE vs. FREQUENCY 100 I = 1mA to 100mA 25° 0.1 1k 10k 100k (f) Frequency - (Hz) ...

Page 11

... LinFinity. Product processing does not necessarily include testing of all parameters. Linfinity reserves the right to change the configuration and performance of the product and to discontinue product at any time. Copyright © 1999 Rev. 1.4 6/99 LX6431/LX6431A/LX6431B ...

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