ACE432DEP+H [ACE]
Precision adjustable shunt voltage reference; 精密可调分流基准电压源
| 型号： | ACE432DEP+H |
| 厂家： | 
ACE TECHNOLOGY CO., LTD. |
| 描述： | Precision adjustable shunt voltage reference |
| 文件： | 总12页 (文件大小：243K) |
| 中文： | 中文翻译 | 下载： | 下载PDF数据表文档文件 |
ACE432
Technology
Precision adjustable shunt voltage reference
Description
The ACE432 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 1.24V) to 8V with two external resistors.
The device has a typical output impedance of 0.30Ω. Active output circuitry provides a very sharp turn on
characteristic, making this device excellent replacement for Zener diodes in many applications.
The ACE432 is characterized for operation from 0℃ to 105℃, and two package options (SOT-23-3 and
TO-92) allow the designer the opportunity to select the proper package for their applications.
Features
• Low voltage operation (1.24V)
• Adjustable output voltage VD=VREF to 8V
• Wide operating current range 60μA to 100mA
• Low dynamic output impedance 0.30Ω (Typ.)
• Trimmed bandgap design up ±0.5%
• ESD rating is 2.5KV (Per MIL-STD-883D)
Application
• Linear Regulators
• Adjustable Supplies
• Switching Power Supplies
• Battery Operated Computers
• Instrumentation
• Computer Disk Drives
Absolute Maximum Ratings
Parameter
Symbol
VKA
Max
8
Unit
V
Cathode to Anode Voltage (Note 2)
Continuous Cathode Current
Reference Input Current
IKA
150
3
mA
mA
IREF
Thermal resistance junction to ambient
TO-92
SOP-8
220
150
120
230
230
θJA
OC/W
OC
SOT-89-3
SOT-23-3
SOT-23-5
Operating junction temperature
Storage temperature range
Lead temperature (soldering) 10sec
TJ
TSTG
TLEAD
150
- 45 to 150 OC
260
OC
Note 1: Exceeding these rating could cause damage to the device. All voltages are with respect to Ground. Currents are positive
into, negative out of the specified terminal.
Note 2: Voltage values are with respect to the anode terminal unless otherwise noted.
VER 1.2
1
ACE432
Technology
Precision adjustable shunt voltage reference
Packaging Type
TO-92
SOP-8
SOT-89-3
SOT-23-3(A)/(B)
3
1
2
3
1
2
3
8
7
6
4
5
1
2
3
1
2
SOT-23-5
5
4
1
2
3
Pin
TO-92 SOP-8 SOT-89-3 SOT-23-3(A) SOT-23-3(B) SOT-23-5
Cathode
Anode
Ref
1
2
3
1
2.3.6.7
8
3
2
1
2
3
1
1
3
2
3
5
4
NC
4.5
1.2
Ordering information
Selection Guide
ACE432 XX XXX + H
Halogen - free
Pb - free
EP : TO-92
FM : SOP-8
AM : SOT-89-3
BMA: SOT-23-3(A)
BMB: STO-23-3(B)
BN : SOT-23-5
Reference Voltage accuracy :
A : 0.5%
B : 1%
C: 1.5%
D: 2%
VER 1.2
2
ACE432
Technology
Precision adjustable shunt voltage reference
Power Dissipation Table
θJA Df(mW/℃)
(OC /W ) TA≧25℃ Power rating(mW) Power rating(mW) Power rating (mW)
TA≤ 25OC
TA=50OC
TA= 75OC
Package
EP
BM
220
230
6.41
3.50
568
543
455
435
341
326
Note:
1.Exceeding the maximum allowable power dissipation will result in excessive die temperature, and the regulator will
go into Thermal shutdown.
2.TJ: Junction Temperature Calculation TJ = TA + ( PD x θJA )
The θJA numbers are guidelines for the thermal performance of the device/PC-board system. All of the above
assume no Ambient airflow.
3.θJA : Thermal Resistance-Junction to Ambient, DF: Derating factor, Po: Power consumption
Electrical Characteristics
Parameter
Symbol
Test Conditions
Min.
Typ. Max. Unit
0.5%
1.0%
1.5%
2.0%
1.234 1.240 1.246
1.228 1.240 1.252
1.211 1.240 1.259
1.215 1.240 1.265
VKA=VREF, IKA=10mA
Test Circuit #1
Reference Voltage
VREF
V
VKA=VREF, IKA=10mA
TA=0℃ to 105℃
Test Circuit #1
IKA=10mA
Deviation of reference voltage
over full temperature range
VI(DEV)
10
25
mV
Ratio of change in reference
voltage to the change in cathode ΔVREF/ΔKA
ΔVKA=8V to VREF
Test Circuit #2
IKA=10mA,
-1.0
0.15
0.10
-2.7 mV/V
voltage
Reference current
IREF
R1=10KΩ, R2=∞
Test Circuit #2
IKA=10mA, TA=0℃ to
105℃ R1=10KΩ, R2=∞
Test Circuit #2
VKA=VREF
2
μA
μA
Deviation of Reference current
over full temperature range
II(DEV)
0.50
Minimum cathode current for
regulation
IMIN
IOFF
60
100
0.8
μA
μA
Test Circuit #1
VKA=8V, VREF=0
Test Circuit #3
IKA=100μA-80mA
VKA=VREF, f≦1KHz
Test Circuit #1
Off-state cathode current
0.04
Dynamic impedance
IZKAI
0.3
1.0
Ω
VER 1.2
3
ACE432
Technology
Precision adjustable shunt voltage reference
Block Diagram
Symbol Diagram
Typical Applications
ACE432
Test Circuits
Test Circuit 1: VKA=VREF Test Circuit 2: VKA>VREF
Test Circuit 3: Off State Current
VER 1.2
4
ACE432
Technology
Typical Performance Characteristics
Cathode Current VS Cathode Voltage
Precision adjustable shunt voltage reference
Cathode Voltage (V)
Reference Voltage VS Temperature (IIoad=10mA)
Temperature (℃)
Reference Input Current VS Temperature (R1=10K, R2=∞, IIoad=10mA)
Temperature (℃)
VER 1.2
5
ACE432
Technology
Typical Performance Characteristics
Stability Boundary Condition
Precision adjustable shunt voltage reference
150Ohm
Test Circuit for VKA=VREF
150Ohm
Test Circuit for VKA=2V, 3V
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 1K conditions with CL=0. VBAT
and CL then were adjusted to determine the ranges of stability. As the graph suggested, ACE432 is
unconditional stable with IK from 0 to 100mA and with CL from 0.001uF to 1Uf.
VER 1.2
6
ACE432
Technology
Precision adjustable shunt voltage reference
Packing Information
TO-92
VER 1.2
7
ACE432
Technology
Precision adjustable shunt voltage reference
Packing Information
SOP-8
VER 1.2
8
ACE432
Technology
Precision adjustable shunt voltage reference
Packing Information
SOT-89-3
VER 1.2
9
ACE432
Technology
Precision adjustable shunt voltage reference
Packing Information
SOT-23-3
VER 1.2 10
ACE432
Technology
Precision adjustable shunt voltage reference
Packing Information
SOT-23-5
VER 1.2 11
ACE432
Technology
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 1.2 12
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