EC432|Adjustable Precision Shunt Regulator


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EC432

Adjustable Precision Shunt Regulator

 

 

 

Description

The EC432 is a low voltage three terminal adjustable shunt regulator with a guaranteed thermal stability over applicable temperature ranges. The output voltage can be set to any value between VREF (approximately 1.24 V) to 12V with two external resistors. This device has a typical output impedance of 0.25Ω. Active output circuitry provides a very sharp turn on characteristic, making this device excellent replacement for Zener diodes in many applications. The EC432 is characterized for operation from 0oC to 105oC, and four package options (SOT23-3L,

SOT23-5L, TO92-3L and SOP8) allow the designer the opportunity to select the proper package for their applications.

 

Features

Low voltage operation (1.24V)

Adjustable output voltage V0 =VREF to 18V

Wide operating current range 60A to 100mA

Low dynamic output impedance 0.05Ω (Typ.)

Trimmed bandgap design up to + 0.5%.

ESD rating is 4KV(Per MIL-STD-883D)

Available in Halogen-Free Packages.

 

Applications

Linear Regulators

Adjustable Supplies

Switching Power Supplies

Battery Operated Computers

Instrumentation

Computer Disk Drives

 

Ordering/Marking Information

EC432NN ​​ XX ​​ X

 ​​ ​​ ​​ ​​ ​​ ​​ ​​ ​​ ​​ ​​ ​​ ​​ ​​ ​​ ​​ ​​ ​​ ​​ ​​ ​​ ​​ ​​ ​​ ​​ ​​ ​​ ​​ ​​ ​​ ​​ ​​ ​​ ​​ ​​ ​​ ​​ ​​ ​​ ​​ ​​ ​​ ​​ ​​ ​​ ​​ ​​ ​​ ​​ ​​ ​​ ​​ ​​ ​​ ​​ ​​ ​​ ​​ ​​ ​​​​ R:Tape & Reel

 

 

 ​​ ​​ ​​ ​​ ​​ ​​ ​​ ​​ ​​ ​​ ​​ ​​ ​​ ​​ ​​ ​​ ​​ ​​ ​​ ​​ ​​ ​​ ​​ ​​ ​​ ​​ ​​ ​​​​ Package Type:

 ​​ ​​ ​​ ​​ ​​ ​​ ​​ ​​ ​​ ​​ ​​ ​​ ​​ ​​ ​​ ​​ ​​ ​​ ​​ ​​ ​​ ​​ ​​ ​​ ​​ ​​ ​​ ​​ ​​ ​​ ​​ ​​ ​​ ​​ ​​ ​​ ​​ ​​ ​​ ​​ ​​ ​​ ​​ ​​ ​​ ​​ ​​ ​​ ​​ ​​ ​​ ​​ ​​ ​​ ​​ ​​ ​​ ​​ ​​ ​​ ​​ ​​ ​​ ​​ ​​ ​​ ​​​​ B1SOT23-3L(2.8*1.5)

 ​​ ​​ ​​ ​​ ​​ ​​ ​​ ​​ ​​ ​​ ​​ ​​ ​​ ​​ ​​ ​​ ​​ ​​ ​​ ​​ ​​ ​​ ​​ ​​ ​​ ​​ ​​ ​​ ​​ ​​ ​​ ​​ ​​ ​​ ​​ ​​ ​​ ​​ ​​ ​​ ​​ ​​ ​​ ​​ ​​ ​​ ​​ ​​ ​​ ​​ ​​ ​​ ​​ ​​ ​​ ​​ ​​ ​​ ​​ ​​ ​​ ​​ ​​ ​​ ​​ ​​ ​​​​ BFSOT23-3B(2.8*1.2)

 ​​ ​​ ​​ ​​ ​​ ​​ ​​ ​​ ​​ ​​ ​​ ​​ ​​ ​​ ​​ ​​ ​​ ​​ ​​ ​​ ​​ ​​ ​​ ​​ ​​ ​​ ​​ ​​ ​​ ​​ ​​ ​​ ​​ ​​ ​​ ​​ ​​ ​​ ​​ ​​ ​​ ​​ ​​ ​​ ​​ ​​ ​​ ​​ ​​ ​​ ​​ ​​ ​​ ​​ ​​ ​​ ​​ ​​ ​​ ​​ ​​ ​​ ​​ ​​ ​​ ​​ ​​​​ B2SOT23-5

 ​​ ​​ ​​ ​​ ​​ ​​ ​​ ​​ ​​ ​​ ​​ ​​ ​​ ​​ ​​ ​​ ​​ ​​ ​​ ​​ ​​ ​​ ​​ ​​ ​​ ​​ ​​ ​​ ​​ ​​ ​​ ​​ ​​ ​​ ​​ ​​ ​​ ​​ ​​ ​​ ​​ ​​ ​​ ​​ ​​ ​​ ​​ ​​ ​​ ​​ ​​ ​​ ​​ ​​ ​​ ​​ ​​ ​​ ​​ ​​ ​​ ​​ ​​ ​​ ​​ ​​ ​​​​ A6TO92-3L

 ​​ ​​ ​​ ​​ ​​ ​​ ​​ ​​ ​​ ​​ ​​ ​​ ​​ ​​ ​​ ​​ ​​ ​​ ​​ ​​ ​​ ​​ ​​ ​​ ​​ ​​ ​​ ​​ ​​ ​​ ​​ ​​ ​​ ​​ ​​ ​​ ​​ ​​ ​​ ​​ ​​ ​​ ​​ ​​ ​​ ​​ ​​ ​​ ​​ ​​ ​​ ​​ ​​ ​​ ​​ ​​ ​​ ​​ ​​ ​​ ​​ ​​ ​​ ​​ ​​ ​​ ​​​​ M1SOP8

 

 

Package

Marking

Production Year Code

Production Week Code

Lead-Free Package

SOT23-3L

SE432W

Starting with S, a bar on top of S is for production year 2001, and underlined S is for year 2002. ​​ The next character is marked on top for 2003, and underlined for 2004. The naming pattern continues with consecutive characters for later years.

A-Z: 1-26

a-z: 27-52

Lead-free package is indicated by a dot on top of the week code.

SOT23-5L

SE432W

SOP8

SE432

YYWW

YY is for the year of production. ​​ 04 means the product is manufactured in year of 2004.

WW is for the week of production. ​​ 26 means the product is manufactured in the 26th week

Lead-free package is indicated by LF after YYWW.

TO92-3L

SE432

YYWW

 

 

 

Pin Configuration

SOT23-3L

(Top View)

SOT23-5L

(Top View)

SOP8

(Top View)

TO92-3L

(Top View)

 

Absolute Maximum Ratings

Parameter

Symbol

Maximum

Units

Cathode Voltage

VKA

20

V

Continuous Cathode Current

I KA

150

mA

Reference Current

I REF

10

mA

Operating Junction Temperature Range

TJ

150

°C

Storage Temperature Range

TstG

-40 to 150

°C

Thermal Resistance

JA

230 (SOT23-3L)

°C/W

230 (SOT23-5L)

150 (SOP8)

220 (TO92-3L)

Lead Temperature (Soldering) 10 seconds

TLEAD

260

°C

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

Electrical Characteristics

Parameter

Symbol

Test Conditions & Circuit

Min

Typ

Max

Unit

Reference Voltage

1.240V ± 0.5%

VREF

Test circuit #1

VKA = VREF, IKA = 10mA

1234

1240

1246

mV

1.240V ± 1.0%

1228

1240

1252

1.240V ± 1.5%

1221

1240

1259

1.240V ± 2.0%

1215

1240

1265

Deviation of Reference Voltage over Full Temperature Range

VI(DEV)

Test circuit #1

VKA = VREF, IKA = 10mA,

TA = 0°C - 105°C

--

4

15

mV

Ratio of Change in Reference Voltage to the Change in Cathode Voltage

VREF/VKA

Test circuit #2

IKA = 10mA, VKA = 12V to VREF

--

-1.0

-2.7

mV/V

Reference Current

IREF

Test circuit #2

IKA = 10mA, R1=10kΩ, R2 =

--

0.25

-

A

Deviation of Reference Current over Full Temperature Range

II(DEV)

Test circuit #2

IKA = 10mA, R1=10kΩ, R2 =

TA = 0°C - 105°C

--

0.10

0.50

A

Minimum Cathode Current for Regulation

IMIN

Test circuit #1

VKA = VREF

--

60

100

A

Off-state Cathode Current

IOFF

Test circuit #3

VKA = 12V, VREF = 0

--

0.04

0.8

A

Dynamic Impedance

| ZKA |

Test circuit #1

IKA = 100A - 80mA,

VKA = VREF, f 1kHZ

--

0.05

0.15

Ω

Note 1: Upon Customer Request.

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

Typical Performance Characteristics

Reference Input Current VS Junction Temperature

Junction Temperature (C)

 

 

 

 

 

 

 

 

 

 

 

 

 

 

The areas under the curves represent conditions that may cause the device to oscillate. ​​ For VKA = 2V and 3V curves, R2 and VBAT were adjusted to establish the initial VKA and IK conditions with CL = 0. ​​ VBAT and CL then were adjusted to determine the ranges of stability. ​​ As the graph suggested, SE432 is unconditional stable with IK from 0 to 100mA and with CL from 0.001uF to 1uF.

 

Symbol Diagram

 

 

 

 

 

 

 

 

 

 

 

 

 

Block Diagram

 

 

 

 

 

 

 

 

 

Test Circuits

Test Circuit 1:

VKA = VREF

Test Circuit 2:

VKA ​​ > VREF

Test Circuit 3:

Off State Current

 

Application Circuit

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

Package Outline Dimensions

SOT23-3B

 ​​ ​​ ​​ ​​ ​​ ​​ ​​ ​​ ​​ ​​ ​​ ​​ ​​ ​​ ​​ ​​ ​​ ​​ ​​ ​​ ​​​​ 

 

SOT23-3L

 ​​ ​​ ​​ ​​ ​​ ​​ ​​ ​​ ​​ ​​ ​​ ​​ ​​ ​​ ​​ ​​ ​​​​ 

 

SOT23-5L

 

 ​​ ​​ ​​ ​​ ​​ ​​ ​​ ​​ ​​ ​​ ​​ ​​ ​​ ​​ ​​ ​​ ​​ ​​ ​​ ​​ ​​ ​​​​ 

 

 

SOP8

 

 ​​ ​​ ​​ ​​ ​​ ​​ ​​ ​​ ​​ ​​ ​​ ​​ ​​ ​​ ​​ ​​ ​​ ​​​​ 

 

TO92-3L

 

 ​​ ​​ ​​ ​​ ​​ ​​ ​​ ​​ ​​ ​​ ​​ ​​ ​​ ​​ ​​ ​​ ​​ ​​ ​​ ​​ ​​ ​​ ​​ ​​ ​​​​ 

 

 

 

 

 

 

 

 

 

 


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規格是死的,設計是活的
我們提供具有靈活彈性的客製化IC與模組設計

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