AP432Y-A [A-POWER]
Adjustable Precision Shunt Regulator; 可调式精密并联稳压器
| 型号： | AP432Y-A |
| 厂家： | 
ADVANCED POWER ELECTRONICS CORP. |
| 描述： | Adjustable Precision Shunt Regulator |
| 文件： | 总8页 (文件大小：329K) |
| 中文： | 中文翻译 | 下载： | 下载PDF数据表文档文件 |
Advanced Power
Electronics Corp.
Adjustable Precision Shunt Regulator
AP432
Features
General Description
- Precision reference voltage
The AP432 are 3-terminal adjustable precision shunt
regulators with guaranteed stable temperature over
the applicable extended commercial temperature
range. The output voltage may be set at any level
greater than 1.24\/ (V REF) up to 20V merely by
selecting two external resistors that act as a voltage
divider network. These devices have a typical output
impedance of 0.2Ω. Active output circuitry provides
very sharp turn-on characteristics, making these
devices excellent improved replacements for Zener
diodes in many applications.
B : 1.24V ± 1%
A : 1.24V ± 0.5%
- Sink current capability: 200mA.
- Minimum cathode current for regulation: 150µA
- Equivalent full-range temp coefficient: 30 ppm/oC
- Fast turn-on Response.
- Low dynamic output impedance: 0.2Ω
- Programmable output voltage to 20v
- Low output noise
- Packages: SOT89, SOT23, SOT25, SOP8 and
TO92
The precise +/- 1% reference voltage tolerance of the
AP432 make it possible in many applications to avoid
the use of a variable resistor, consequently saving cost
and eliminating drift and reliability problems associated
with it.
- RoHS Compliant & Halogen Free Product
Ordering Information
A P 4 3 2 X - X
Package
Reference Voltage
Tolerance:
M
G
T
N
Y
: SOP-8
: SOT89
: TO92
A
B
: 1.24V(+/-) 0.5%
: 1.24V(+/-)1%
: SOT23
: SOT25
Typical Application Circuit
VIN
VOUT
+
+
R1
R2
Cin
Cout
AP432
VOUT = (1+R1/R2)VREF
Precision Regulator
This datasheet contains new product information. Advanced Power Electronics Corp. reserves the rights to modify the product specification without notice. No liability is assumed as
a result of the use of this product. No rights under any patent accompany the sale of the product.
1
20130108V3.1
Advanced Power
AP432
Electronics Corp.
Adjustable Precision Shunt Regulator
Block Diagram
Symbol
Cathode (C)
REF (R)
+
-
REF (R)
VREF
1.24V
Anode (A)
Anode (A)
Pin Configuration
Order Number
Pin Configuration (Top View)
Order Number
Pin Configuration (Top View)
3
2
1
Cathode
Anode
REF
3
2
Cathode
AP432G
(SOT-89)
AP432N
(SOT-23)
Anode
1
REF
1
2
NC
5
4
3
2
1
Cathode
Anode
REF
Anode
REF
AP432T
(TO-92)
AP432Y
(SOT-25)
NC
Cathode
3
Cathode
Anode
Anode
NC
1
2
3
4
8
7
6
5
REF
AP432M
(SOP-8)
Anode
Anode
NC
Advanced Power Electronics Corp.
www.a-power.com.tw
2
Advanced Power
AP432
Electronics Corp.
Adjustable Precision Shunt Regulator
Absolute Maximum Ratings
Cathode Voltage…………....……..............................…..........……………………………………...……….20V
Continuous cathode current ………………………………......................……………………...-10mA ~ 250mA
Reference input current range ……………………...….………....................………………………………10mA
Operating temperature range ............……………………………………………………………… -40 oC ~ 85oC
Lead Temperature……………….…………….…..……………………..………………..……........260oC
Storage Temperature ……………………..............…......………………….......……...........-65oC ~ 150oC
Power Dissipation (Notes 1. 2)
SOT-89 .……………..……..……………………...........….... 0. 80W
TO-92.....…………….………………………....……….. ..... 0.78W
SOT-23 …………………..…..…………………………….…. 0.25W
SOT-25...……………………..………….……………………..0.25W
SOP-8...………………….……………………………..……… 0.6W
Note 1: T , max =150oC. .
J
Note 2: Ratings apply to ambient temperature at 25oC.
Electrical Characteristics (Ta=25oC, unless otherwise specified.)
Symbo
Parameter
Reference Voltage
Test conditions
Min.
1.227
1.233
Typ.
1.24
3.0
Max.
1.252
1.246
Unit
V
l
V
KA = Vref,
-B
-A
VREF
I
KA = 10mA
(Fig.1)
Deviation of Reference Input Voltage VKA = VREF , IKA = 10mA ,
VREF
20
-2.0
3.5
1.2
mV
mV/V
µA
over Temperature (Note 3)
Ratio of the Change in Reference
Voltage to the Change in Cathode
Voltage
Ta = full range
(Fig.1)
∆V
REF
IKA = 10mA
(Fig.2)
VKA = 20 ~VREF
-1.4
1.4
∆V
KA
R1 = 10KΩ,R2 = ∞
IKA= 10mA (Fig.2)
R1 = 10KΩ,R2 = ∞
Reference Input Current
IREF
Deviation of Reference Input Current
over Temperature
I
KA = 10mA
αIREF
0.4
µA
Ta = Full range (Fig.2)
KA = VREF (Fig.1)
Minimum Cathode Current for
Regulation
Off-state Current
V
IKA(min)
0.15
0.1
0.3
1.0
0.5
mA
µA
Ω
VKA = 20V , VREF = 0V (Fig.3) IKA(off)
V KA = VREF
Dynamic Output Impedance (Note 4)
0.2
ZKA
Frequency≤ 1KHz (Fig.1)
Advanced Power Electronics Corp.
www.a-power.com.tw
3
Advanced Power
AP432
Electronics Corp.
Adjustable Precision Shunt Regulator
VMAX
VDEV = VMAX - VMIN
VMIN
TI
T2
TEMPERATURE
Note 3. Deviation of reference input voltage, VDEV, is defined as the maximum variation of the reference over
the full temperature range.
The average temperature coefficient of the reference input voltage αVREF is defined as:
VDEV
(
) ×106
VREF (25°C)
ppm
……………………..……………….. (
αVREF
=
)
°C
T2 − T1
Where:
T2 – T1 = full temperature change.
αVREF can be positive or negative depending on whether the slope is positive or negative.
Note 4. The dynamic output impedance, RZ, is defined as:
∆
VKA
ZKA
=
∆IKA
When the device is programmed with two external resistors R1 and R2 (see Figure 2.), the dynamic output
impedance of the overall circuit, is defined as:
∆
v
i
R1
R2
'
ZKA
=
≈ ZKA (1+
)
∆
Test Circuits
Input
IN
IN
VKA
IKA
VKA
IKA
VKA
R1
R2
I
REF
VREF
I
Z(OFF)
V
REF
R1
R2
VKA = VREF (1 +
) + IREF ⋅R1
VREF
Fig1. Test Circuit for VKA= VREF
Fig2. Test circuit for VKA
＞
Fig3. Test Circuit for off-state Current
Advanced Power Electronics Corp.
www.a-power.com.tw
4
Advanced Power
AP432
Electronics Corp.
Adjustable Precision Shunt Regulator
Typical Performance Characteristics
SMALL-SIGNAL VOLTAGE AMPLIFICATION vs. FREQUENCY
60
IKA=10mA
Output
232Ω
TA=25oC
IKA
50
15KΩ
40
30
20
10
0
9µF
-
+
-
8.25KΩ
GND
TEST CIRCUIT FOR VOLTAGE AMPLIFICATION
10K
1K
100K
1M
10M
f-Frequency-Hz
REFERENCE IMPEDANCE vs. FREQUENCY
100
10
1
IKA=10mA
TA=25oC
1KΩ
Output
I
KA
50Ω
-
+
GND
TEST CIRCUIT FOR REFERENCE IMPEDANCE
0.1
1K
10K
100K
1M
10M
f-Frequency-Hz
STABILITY BOUNDARY CONDITIONS†
A VKA=Vref
150O
100
90
80
70
60
50
40
30
20
10
0
TA=25oC
I
KA
B VKA=5V
+
C VKA=10V
D VKA=15V
VBATT
CL
-
B
Stable
C
Stable
TEST CIRCUIT FOR CURVE A
A
D
I
KA
150O
VBATT
R1=10KO
CL
+
-
R2
0.001
0.01
0.1
1
10
CL-Load Capacitance-µF
The areas under the curves represent conditions that may cause the
device to oscillate. For curves B, C, and D, R2 and V+ were adjusted
to establish the initial VKA and IKA conditions with CL=0.VBATT and
CL were then adjusted to determine the ranges of stability.
TEST CIRCUIT FOR CURVE B, C, AND D
Advanced Power Electronics Corp.
www.a-power.com.tw
5
Advanced Power
AP432
Electronics Corp.
Adjustable Precision Shunt Regulator
Application Examples
VIN
VIN
I
OUT
RCL
R
VIN
R1B
R2B
R1A
R2A
+
ON
OFF
VIN
Delay =
)
RC x ln(
IOUT = VREF / RCL
LED on when Low Limit VIN High Limit
V
＜
＜
IN -VREF
≈
Low Limit VREF (1+R1B/R2B)
≈
High Limit VREF (1+R1A/R2A)
Fig.5 Delay Timer
Fig.4 Voltage Monitor
Fig.6 Current Limiter or Current Source
VIN
IOUT
VIN
VOUT
VIN
VOUT
PUSE
R1
R1
R2
R2
V
RS
L
IMIT
(1 + R1/R2) ×VREF
OUT = (1 + R1/R2) ×VREF
I
OUT = VREF / RS
Fig.7 Constant-Current Sink
Fig.8 Higher-Current Shunt Regulator
Fig.9 Crow Bar
VIN
R1A
R2A
R1B
Output ON when
Low Limint High Limit
＜VIN＜
+
VBE
R2B
Low Limit
High Limit
V
REF(1 + R1B/R2B) +VBE
V
REF(1 + R1A/R2A)
Fig.10 Over-Voltage / Under-Voltage Protection Circuit
Advanced Power Electronics Corp.
www.a-power.com.tw
6
Advanced Power
Electronics Corp.
AP432
MARKING INFORMATION
SO-8
Part Number
Package Code
432M
YWWSSS
Date Code (YWWSSS)
Y：Last Digit Of The Year
WW：Week
SSS：Sequence
SOT-23-5L
Part Number : R2
R2SS
Date Code
SS:2004,2008,2012…
SS:2003,2007,2011…
SS:2002,2006,2010…
SS:2001,2005,2009…
SOT-23
Part Number : R2
R2SS
Date Code
SS:2004,2008,2012…
SS:2003,2007,2011…
SS:2002,2006,2010…
SS:2001,2005,2009…
SOT-89
Part Number
Package Code
Date Code (YWWS)
Y:Year
WW：Week
S：Sequence
7
Advanced Power
Electronics Corp.
AP432
MARKING INFORMATION
TO-92
Part Number
Package Code
432T
Date Code (YWWS)
Y:Year
YWWS
WW：Week
S：Sequence
8
相关型号：
AP432Y-B-HF
IC THREE TERM VOLTAGE REFERENCE, PDSO3, HALOGEN FREE AND ROHS COMPLIANT, SOT-23, 3 PIN, Voltage Reference
A-POWER
AP432YL-B
Three Terminal Voltage Reference, 1 Output, 1.24V, Trim/Adjustable, ROHS COMPLIANT, SOT89, 3 PIN
DIODES
©2020 ICPDF网 联系我们和版权申明