CERAMATE CP432R

CP432
Adjustable Precision Shunt Regulator
Features
General Description
- Precision reference voltage
CP432 : 1.24V ± 1%
CP432A : 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, TO92
The CP432/432A 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\/ (VREF) 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.
The precise +/- 1% reference voltage tolerance of
the CP432/432A 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.
Typical Application Circuit
VOUT
VIN
+
R1
Cin
+
Cout
CP432
R2
VOUT = (1+R1/R2)VREF
Precision Regulator
* All specs and applications shown above subject to change without prior notice.
1F-5 NO.66 SEC.2 NAN-KAN RD ., LUCHU , TAOYUAN, TAIWAN
Email: server@ceramate.com.tw
Tel:886-3-3214525
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Rev 1.1 Jan. 19,2005
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CP432
Adjustable Precision Shunt Regulator
Symbol
Block Diagram
Cathode (C)
REF (R)
+
VREF
Cathode (C)
-
1.24V
REF (R)
Anode (A)
Anode (A)
Pin Configuration
Order Number
Pin Configuration (Top View)
3 Cathode
CP432Y
CP432AY
(SOT89)
1 REF
+
3 Cathode
+
2 Anode
+
CP432V
CP432AV
(TO92)
2 Anode
1 REF
Order Number
CP432R
CP432AR
(SOT23)
CP432W
CP432AW
(SOT23)
Pin Configuration (Top View)
3 REF
Anode 1
2 Cathode
3 Cathode
Anode 1
2 REF
* All specs and applications shown above subject to change without prior notice.
1F-5 NO.66 SEC.2 NAN-KAN RD ., LUCHU , TAOYUAN, TAIWAN
Email: server@ceramate.com.tw
Tel:886-3-3214525
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CP432
Adjustable Precision Shunt Regulator
Absolute Maximum Ratings
Cathode
voltage ……………………………....……...........…..........……………………………………...……….20V
Continuous cathode current …………………………………......................…………………….... -10mA ~
250mA
Reference input current range ………………………...….………....................……………………….….......
10mA
Operating temperature range (CP432) ………………………………………………………………… -20oC ~
85oC
o
(CP432I).……………..…..…............……………………………..……. -40 C~85oC
Lead Temperature……………….…………….…..……………………..………………..…….........…............
260oC
Storage Temperature ……………………………..............…......………………….......……............ -65oC ~
150oC
Power Dissipation (Notes 1. 2)
SOT89 .……………..……..……………………............….... 0.
80W
TO92 .....…………….………………………....……….. ..... 0.78W
SOT23. …………………..…..…………………………….…. 0.23W
Note 1: TJ, max =150oC. .
Note 2: Ratings apply to ambient temperature at 25oC.
Electrical Characteristics (Ta=25oC, unless otherwise specified.)
Parameter
Test conditions
VKA = Vref,
CP432
Reference voltage
I KA = 10mA
CP432A
(Fig.1)
Deviation of reference input voltage VKA = VREF , IKA = 10mA ,
over temperature (Note 3)
Ta = full range (Fig.1)
Ratio of the change in reference
IKA = 10mA
voltage to the change in cathode
VKA = 20 ~VREF
(Fig.2)
voltage
R1 = 10KΩ,R2 = ∞
Reference input current
IKA= 10mA (Fig.2)
R1 = 10KΩ,R2 = ∞
Deviation of reference input current
IKA = 10mA
over temperature
Ta = Full range (Fig.2)
Minimum cathode current for
VKA = VREF (Fig.1)
regulation
Off-state current
VKA = 20V , VREF = 0V (Fig.3)
V KA = VREF
Dynamic output impedance (Note 4) ∆IKA = 0.1mA ~ 15mA
Frequency ≤ 1KHz (Fig.1)
Symbol
VREF
Min.
1.227
1.233
Typ.
1.24
Max.
1.252
1.246
Unit
V
3.0
20
mV
-1.4
-2.0
mV/V
IREF
1.4
3.5
µA
αIREF
0.4
1.2
µA
IKA(min)
0.15
0.3
mA
IKA(off)
0.1
1.0
µA
Z KA
0.2
0.5
Ω
VREF
∆VREF
∆V
KA
* All specs and applications shown above subject to change without prior notice.
1F-5 NO.66 SEC.2 NAN-KAN RD ., LUCHU , TAOYUAN, TAIWAN
Email: server@ceramate.com.tw
Tel:886-3-3214525
Http: www.ceramate.com.tw
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CP432
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:
(
αVREF =
VDEV
VREF (25°C)
) × 10
6
……………………..……………….. ( ppm
T2 − T1
°C
)
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:
∆ V KA
Z KA =
∆ I KA
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
ZKA =
≈ ZKA
∆i
(1 +
R1
)
R2
Test Circuits
Input
IN
VKA
IKA
IKA
VKA
R1
VREF
R2
VKA
IREF
VREF
V KA = V REF (1 +
Fig1. Test Circuit for V KA= VREF
IN
IZ(OFF)
R1
) + IREF ⋅ R1
R2
Fig2. Test circuit for V KA>VREF
Fig3. Test Circuit for off-state Current
* All specs and applications shown above subject to change without prior notice.
1F-5 NO.66 SEC.2 NAN-KAN RD ., LUCHU , TAOYUAN, TAIWAN
Email: server@ceramate.com.tw
Tel:886-3-3214525
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CP432
Adjustable Precision Shunt Regulator
Typical Performance Characteristics
SMALL-SIGNAL VOLTAGE AMPLIFICATION vs. FREQUENCY
IKA=10mA
TA=25oC
50
Output
IKA
15KΩ
40
+
9μF
30
232Ω
+
-
AV -Small Signal Voltage Amplification (dB)
60
-
8.25KΩ
GND
20
TEST CIRCUIT FOR VOLTAGE AMPLIFICATION
10
0
10K
1K
100K
1M
f-Frequency-Hz
10M
REFERENCE IMPEDANCE vs. FREQUENCY
∣ZKA∣—Reference Impedance —Ω
100
IKA=10mA
TA=25oC
1KΩ
Output
I KA
10
50Ω
+
GND
1
TEST CIRCUIT FOR REFERENCE IMPEDANCE
0.1
1K
10K
100K
1M
10M
f-Frequency-Hz
STABILITY BOUNDARY CONDITIONS †
100
90
IKA-Cathode Current-m A
80
150O
TA=25 oC
A VKA=Vref
I KA
B VKA=5V
C VKA=10V
D VKA=15V
B
Stable
70
60
50
CL
+
-
VBATT
C
Stable
A
TEST CIRCUIT FOR CURVE A
40
30
D
I KA
20
10
CL
0
0.001
150O
R1=10KO
R2
0.01
0.1
1
C L-Load Capacitance-µF
10
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 V KA and I KA conditions with CL =0.V BATT and
CL were then adjusted to determine the ranges of stability.
+
-
VBATT
TEST CIRCUIT FOR CURVE B, C, AND D
* All specs and applications shown above subject to change without prior notice.
1F-5 NO.66 SEC.2 NAN-KAN RD ., LUCHU , TAOYUAN, TAIWAN
Email: server@ceramate.com.tw
Tel:886-3-3214525
Http: www.ceramate.com.tw
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Rev 1.1 Jan. 19,2005
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CP432
Adjustable Precision Shunt Regulator
Application Examples
VIN
V IN
RCL
R
R1A
R1B
ON
R2A
R2B
+
OFF
LED on when Low Limit<VIN<High Limit
Low Limit ≈ VREF (1+R1B/R2B)
High Limit ≈ VREF (1+R1A/R2A)
V IN
Delay = RC x ln(
)
VIN -VREF
Fig.5 Delay Timer
Fig.4 Voltage Monitor
VIN
IOUT
VIN
IOUT
VIN
IOUT = VREF / RCL
Fig.6 Current Limiter or Current Source
VOUT
VIN
R1
R1
R2
R2
RS
LIMIT
VOUT = (1 + R1/R2) × VREF
IOUT = VREF / RS
Fig.7 Constant-Current Sink
VOUT
PUSE
Fig.8 Higher-Current Shunt Regulator
(1 + R1/R2) × VREF
Fig.9 Crow Bar
VIN
R1A
R1B
+
R2A
Low Limit
High Limit
R2B
Output ON when
Low Limint <VIN<High Limit
VBE
V REF(1 + R1B/R2B) +VBE
VREF(1 + R1A/R2A)
Fig.10 Over-Voltage / Under-Voltage Protection Circuit
* All specs and applications shown above subject to change without prior notice.
1F-5 NO.66 SEC.2 NAN-KAN RD ., LUCHU , TAOYUAN, TAIWAN
Email: server@ceramate.com.tw
Tel:886-3-3214525
Http: www.ceramate.com.tw
Page 6 of 10
Rev 1.1 Jan. 19,2005
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CP432
Adjustable Precision Shunt Regulator
Package Diagrams
(1) SOT89-3L Package Outline Dimension
L
HE
E
D1
e1
e
50(2x)
0
8 (2x)
D
A
c
b
Symbol
A
b
b1
C
D
D1
e
e1
E
HE
L
b1
b
Dimensions In Millimeters
Min.
1.40
0.36
0.41
0.35
4.40
1.40
2.90
1.45
2.40
3.94
0.80
Nom.
1.50
0.42
0.47
0.39
4.50
1.60
3.00
1.50
2.50
-
Max.
1.60
0.48
0.53
0.43
4.60
1.75
3.10
1.55
2.60
4.25
1.20
Dimensions In Inches
Min.
0.055
0.014
0.016
0.014
0.173
0.055
0.114
0.057
0.094
0.155
0.031
Nom.
0.059
0.016
0.043
0.015
0.177
0.062
0.118
0.059
0.098
-
Max.
0.063
0.018
0.051
0.017
0.181
0.069
0.122
0.061
0.102
0.167
0.047
* All specs and applications shown above subject to change without prior notice.
1F-5 NO.66 SEC.2 NAN-KAN RD ., LUCHU , TAOYUAN, TAIWAN
Email: server@ceramate.com.tw
Tel:886-3-3214525
Http: www.ceramate.com.tw
Page 7 of 10
Rev 1.1 Jan. 19,2005
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CP432
Adjustable Precision Shunt Regulator
(2) TO92-3L Package Outline Dimension
A1
A
b
b1
b
D
e
E
Symbol
A
A1
b
b1
D
E
L
e
Dimensions In Millimeters
Min.
Nom.
Max.
3.302
3.556
3.810
1.016
0.330
0.381
0.432
0.406
0.457
0.506
4.445
4.572
4.699
4.445
4.572
4.699
13.00
15.500
1.150
1.270
1.390
L
Dimensions In Inches
Min.
Nom.
Max.
0.130
0.140
0.150
0.040
0.013
0.015
0.017
0.016
0.018
0.020
0.175
0.180
0.185
0.175
0.180
0.185
0.512
0.610
0.045
0.050
0.055
* All specs and applications shown above subject to change without prior notice.
1F-5 NO.66 SEC.2 NAN-KAN RD ., LUCHU , TAOYUAN, TAIWAN
Email: server@ceramate.com.tw
Tel:886-3-3214525
Http: www.ceramate.com.tw
Page 8 of 10
Rev 1.1 Jan. 19,2005
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CP432
Adjustable Precision Shunt Regulator
(4) SOT23-3L Package Outline Dimension
E
HE
2
1
3
e
A
A1
A2
b
C
D
E
e
HE
L
Dimensions In Millimeters
Min.
1.00
0.00
1.00
0.35
0.10
2.70
1.40
1.70
2.40
0.35
Nom.
1.20
1.15
0.175
2.90
1.60
2.00
2.70
0.45
L
C
A1
b
Symbol
A
A2
D
Max.
1.40
0.10
1.30
0.50
0.25
3.10
1.80
2.30
3.00
0.55
Dimensions In Inches
Min.
0.039
0.000
0.039
0.014
0.004
0.106
0.055
0.067
0.094
0.014
Nom.
0.047
0.045
0.007
0.114
0.063
0.079
0.106
0.018
Max.
0.055
0.004
0.051
0.020
0.010
0.122
0.071
0.091
0.118
0.022
* All specs and applications shown above subject to change without prior notice.
1F-5 NO.66 SEC.2 NAN-KAN RD ., LUCHU , TAOYUAN, TAIWAN
Email: server@ceramate.com.tw
Tel:886-3-3214525
Http: www.ceramate.com.tw
Page 9 of 10
Rev 1.1 Jan. 19,2005
Fax:886-3-3521052
CP432
Adjustable Precision Shunt Regulator
■ Taping Specifications For TO-92 package
SYMBOL
SPECIFICATIONS
(mm)
SPECIFICATIONS
(inch)
P
12.7 ± 1.0
0.50 ± 0.07
P0
12.7 ± 1.0
0.50 ± 0.07
P1
3.81 ± 0.4
0.15 ± 0.016
H
21.0~26.0
0.828~1.024
H1
17.0~21.0
0.669~0.828
H2
14.0~18.0
0.551~0.709
H3
3.4 max.
0.125 max.
H4
2.5 min.
0.098 min.
F
5.08 ± 0.2
0.2 ± 0.008
W
18.0 ± 0.5
0.708 ± 0.020
W1
9.0 ± 0.5
0.354 ±0.020
W2
6.0 ± 0.5
0.236 ±0.020
ΦD0
4.0 ± 0.2
0.157 ± 0.008
E
0.5 max.
0.020 max.
* All specs and applications shown above subject to change without prior notice.
1F-5 NO.66 SEC.2 NAN-KAN RD ., LUCHU , TAOYUAN, TAIWAN
Email: server@ceramate.com.tw
Tel:886-3-3214525
Http: www.ceramate.com.tw
Page 10 of 10
Rev 1.1 Jan. 19,2005
Fax:886-3-3521052