ACE432NABM+H [ACE]

Precision adjustable shunt voltage reference; 精密可调分流基准电压源


型号：	ACE432NABM+H
厂家：	ACE TECHNOLOGY CO., LTD.
描述：	Precision adjustable shunt voltage reference 精密可调分流基准电压源
文件：	总11页 (文件大小：1072K)
中文：	中文翻译
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ACE432N

Precision adjustable shunt voltage reference

Description

The ACE432N is low-voltage three-terminal adjustable voltage references, with specified thermal

stability over applicable industrial and commercial temperature ranges. Output voltage can be set to any

value between VREF (1.24V) and 20V with two external resistors. These devices have a typical output

impedance of 0.25Ω. Active output circuitry provides a very sharp turn-on characteristic, making the

ACE432N excellent replacements for low-voltage Zener diodes in many applications, including onboard

regulation and adjustable power supplies.

Features

 Low-Voltage Operation --- Down to 1.24V

 Adjustable Output Voltage, Vo=Vref to 20V

 Low Operational Cathode Current --- 80uA (Typ)

 0.25Ω Typical Output Impedance

Application

 Battery Power Equipment

 Linear Regulators

 Switch Power Supply

 Cellular Phone

 Digital Cameras

 Computer Disk Drivers

 Instrumentation

Absolute Maximum Ratings

Parameter

Symbol

Max

Unit

Cathode Voltage

V_Z

I_Z

Continuous Cathode Current

Reference Current

100

I_REF

Thermal resistance junction to ambient

SOT-23-5L

SOT-23-3

θJA

206

^OC/W

Operating junction temperature

-40 to 150 ^OC

-65 to 150 ^OC

Storage temperature range

TSTG

The IC has a protection circuit against static electricity. Do not apply high static electricity or high voltage that exceeds the

performance of the protection circuit to the IC.

VER 1.4

ACE432N

Precision adjustable shunt voltage reference

Packaging Type

SOT-23-5L

SOT-23-3

SOT-23-5L SOT-23-3 Description

Cathode

Anode

Ref

1.2

Ordering information

ACE432N X XX + H

Halogen - free

Pb - free

BN : SOT-23-5L

BM : SOT-23-3

Reference Voltage accuracy :

A : 0.5%

B : 1%

Typical Application Circuit

VIN

VOUT

VREF

GND

VER 1.4

ACE432N

Precision adjustable shunt voltage reference

Block Diagram

Electrical Characteristics

Parameter

Symbol

Test Conditions

Min. Typ. Max. Unit

T_A=25℃

1.234 1.24 1.246

0.5%

T_A=-40℃~80℃

T_A=25℃

1.222

1.258

Reference

V_Z=V_REF

I_Z=10mA

V_REF

Voltage

1.0%

1.228 1.24 1.252

T_A=-40℃~80℃

1.215

1.265

V_Z=V_REF, I_Z=10mA

T_A=-40℃~80℃

V_REFTemp Deviation

V_DEV

Ratio of change in V_REFto

change in cathode

voltage

I_Z=10mA

ΔV_Z=16V to V_REF

ΔV_REF/ΔV_Z

-1.0 -2.7 mV/V

I_Z=10mA,

R1=10KΩ, R2=∞

Reference Input current

IREF Temp Deviation

I_REF

0.15

0.1

0.5

0.4

μA

I_Z=10mA, T_A=-40℃~80℃

R1=10KΩ, R2=∞

I_REF(DEV)

V_Z=6V

V_REF=0

Off-state cathode current

I_Z(OFF)

0.5

1.0

μA

V_Z=12V

Dynamic output

impedance

I_Z=1mA~100mA

V_Z=V_REF, f≦1KHz

R_Z

0.25

0.4

Minimum Operation

Current

I_Z(MIN)

V_Z=V_REF

μA

VER 1.4

ACE432N

Precision adjustable shunt voltage reference

Application Circuit

Figure 1. Test Circuit for V_KA=V_REF

V_O=V_KA=V_REF

Figure 2. Test Circuit for V_KA>V_REF

V_O=V_KA=V_REF*1(1+R1/R2)+I_REF*R1

Figure 3. Test Circuit for I_K(OFF)

Figure 4. Test Circuit for V_KA>V_REF

V_O=V_KA=V_REF*1(1+R1/R2)+I_REF*R1

ACE432N

Figure 5. Flyback with isolation using ACE432N as voltage reference and error amplifier

* To improve the stability of output voltage, Figure 4, a 0.1uF capacitor is recommended between cathode to anode.

VER 1.4

ACE432N

Precision adjustable shunt voltage reference

Performance characteristics

VER 1.4

ACE432N

Precision adjustable shunt voltage reference

Performance Characteristics

VER 1.4

ACE432N

Precision adjustable shunt voltage reference

Performance Characteristics

VER 1.4

ACE432N

Precision adjustable shunt voltage reference

Performance Characteristics

VER 1.4

ACE432N

Precision adjustable shunt voltage reference

Packing Information

SOT-23-5L

VER 1.4

ACE432N

Precision adjustable shunt voltage reference

Packing Information

SOT-23-3

VER 1.4

ACE432N

Precision adjustable shunt voltage reference

Notes

ACE does not assume any responsibility for use as critical components in life support devices or systems

without the express written approval of the president and general counsel of ACE Electronics Co., LTD.

As sued herein:

1. Life support devices or systems are devices or systems which, (a) are intended for surgical implant

into the body, or (b) support or sustain life, and shoes failure to perform when properly used in

accordance with instructions for use provided in the labeling, can be reasonably expected to result in

a significant injury to the user.

2. A critical component is any component of a life support device or system whose failure to perform can

be reasonably expected to cause the failure of the life support device or system, or to affect its safety

or effectiveness.

ACE Technology Co., LTD.

http://www.ace-ele.com/

VER 1.4

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