ACE432NBBN+H [ACE]
Precision adjustable shunt voltage reference; 精密可调分流基准电压源
| 型号： | ACE432NBBN+H |
| 厂家： | 
ACE TECHNOLOGY CO., LTD. |
| 描述： | Precision adjustable shunt voltage reference |
| 文件： | 总11页 (文件大小：1072K) |
| 中文： | 中文翻译 | 下载： | 下载PDF数据表文档文件 |
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
20
Unit
V
Cathode Voltage
VZ
IZ
Continuous Cathode Current
Reference Current
100
3
mA
mA
IREF
Thermal resistance junction to ambient
SOT-23-5L
SOT-23-3
θJA
206
206
OC/W
Operating junction temperature
TJ
-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
1
ACE432N
Precision adjustable shunt voltage reference
Packaging Type
SOT-23-5L
SOT-23-3
3
5
4
SOT-23-5L SOT-23-3 Description
3
5
2
3
1
Cathode
Anode
Ref
4
1.2
NC
1
2
3
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
R
VIN
VOUT
R1
2
1
VREF
R2
3
GND
GND
VER 1.4
2
ACE432N
Precision adjustable shunt voltage reference
Block Diagram
Electrical Characteristics
Parameter
Symbol
Test Conditions
Min. Typ. Max. Unit
TA=25℃
1.234 1.24 1.246
0.5%
TA=-40℃~80℃
TA=25℃
1.222
1.258
Reference
VZ=VREF
IZ=10mA
,
VREF
V
Voltage
1.0%
1.228 1.24 1.252
TA=-40℃~80℃
1.215
1.265
25
VZ=VREF, IZ=10mA
TA=-40℃~80℃
VREF Temp Deviation
VDEV
10
mV
Ratio of change in VREF to
change in cathode
voltage
IZ=10mA
ΔVZ=16V to VREF
ΔVREF/ΔVZ
-1.0 -2.7 mV/V
IZ =10mA,
R1=10KΩ, R2=∞
Reference Input current
IREF Temp Deviation
IREF
0.15
0.1
0.5
0.4
μA
μA
IZ=10mA, TA=-40℃~80℃
R1=10KΩ, R2=∞
IREF(DEV)
VZ=6V
VREF=0
Off-state cathode current
IZ(OFF)
0.5
1.0
μA
VZ=12V
Dynamic output
impedance
IZ=1mA~100mA
VZ=VREF, f≦1KHz
RZ
0.25
30
0.4
80
Ω
Minimum Operation
Current
IZ(MIN)
VZ=VREF
μA
VER 1.4
3
ACE432N
Precision adjustable shunt voltage reference
Application Circuit
Figure 1. Test Circuit for VKA=VREF
VO=VKA=VREF
Figure 2. Test Circuit for VKA>VREF
,
VO=VKA=VREF*1(1+R1/R2)+IREF*R1
Figure 3. Test Circuit for IK(OFF)
Figure 4. Test Circuit for VKA>VREF
,
VO=VKA=VREF*1(1+R1/R2)+IREF*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
4
ACE432N
Precision adjustable shunt voltage reference
Performance characteristics
VER 1.4
5
ACE432N
Precision adjustable shunt voltage reference
Performance Characteristics
VER 1.4
6
ACE432N
Precision adjustable shunt voltage reference
Performance Characteristics
VER 1.4
7
ACE432N
Precision adjustable shunt voltage reference
Performance Characteristics
VER 1.4
8
ACE432N
Precision adjustable shunt voltage reference
Packing Information
SOT-23-5L
VER 1.4
9
ACE432N
Precision adjustable shunt voltage reference
Packing Information
SOT-23-3
VER 1.4
10
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
11
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