CL1431D [CALOGIC]
Precision Adjustable Shunt Reference; 精密可调并联型电压基准
| 型号： | CL1431D |
| 厂家： | 
CALOGIC, LLC |
| 描述： | Precision Adjustable Shunt Reference |
| 文件： | 总6页 (文件大小：82K) |
| 中文： | 中文翻译 | 下载： | 下载PDF数据表文档文件 |
Precision Adjustable
Shunt Reference
CORPORATION
CL1431
FEATURES
DESCRIPTION
• Temperature-Compensated: 30ppm/oC
• Trimmed 0.4% Bandgap Reference
• Internal Amplifier with 150mA Capability
• Temperature Range: Extended to -55 to 125oC
• Low Frequency Dynamic Output Impedance: < 150m
• Low Output Noise
The CL1431 is an adjustable shunt regulator designed to act
as an open-loop error amplifier with a 2.5V temperature
compensated reference. Its highly accurate 0.4% bandgap
reference is perfect for applications requiring stability and
accuracy over temperature and life.
Sharp turn-on characteristics and
a low temperature
• Robust ESD Protection
coefficient make the CL1431 an excellent replacement for
many zener diode applications, programmable to any value
greater than 2.5V and up to 36V by using two external
resistors. As a combination error amplifier and reference, it
can be used to manage control loops such as switching power
supplies.
The CL1431 can be used as a direct replacement for the
standard TL431.
ORDERING INFORMATION
Part
Package
Temperature Range
CL1431LP
CL1431D
CL1431S
TO-92
8-Pin Plastic SOIC
SOT-89
-55 to 125oC
-55 to 125oC
-55 to 125oC
PIN CONFIGURATION (Top View)
SOIC (D)
TO-92 (LP)
SOT-89 (S)
CATHODE
ANODE
ANODE
N/C
1
2
3
4
8
7
6
5
REFERENCE
CATHODE
ANODE
CATHODE
ANODE
ANODE
ANODE
N/C
REFERENCE
REFERENCE
1G-34
1G-33
1G-35
CALOGIC CORPORATION, 237 Whitney Place, Fremont, California 94539, Telephone: 510-656-2900, FAX: 510-651-3025
CL1431
CORPORATION
ABSOLUTE MAXIMUM RATINGS
SYMBOL
PARAMETER
RATING
UNITS
VKA
IAK
Cathode-Anode Reverse Breakdown
Anode-Cathode Forward Current
Operating Cathode Current
37
1
V
A
IKA
250
10
mA
mA
IREF
PD
Reference Input Current
Continuous Power Dissipation at 25oC
TO-92
8L SOIC
SOT-89
775
750
1000
mW
mW
mW
TJ
Junction Temperature
150
–65 to 150
300
oC
oC
oC
TSTG
TL
Storage Temperature
Lead Temperature, Soldering 10 Seconds
Stresses greater than those listed under ABSOLUTE MAXIMUM RATINGS may cause permanent damage to the device. This is a stress rating
only and functional operation of the device at these or any other conditions above those indicated in the operational sections of this specification
is not implied. Exposure to absolute maximum rating conditions for extended periods may affect reliability.
RECOMMENDED CONDITIONS
TYPICAL THERMAL RESISTANCES
SYMBOL
PARAMETER
Cathode Voltage
Cathode Current
RATING
VREF to 36
10
UNIT
V
PACKAGE
TO-92
θJA
θJC
TYPICAL DERATING
6.3mW/oC
VKA
IK
160oC/W
175oC/W
110oC/W
80oC/W
45oC/W
8oC/W
mA
SOIC
5.7mW/oC
SOT-89
9.1mW/oC
FUNCTIONAL BLOCK DIAGRAM
CATHODE (K)
+
–
REFERENCE (R)
2.5V
ANODE (A)
1G-36
CALOGIC CORPORATION, 237 Whitney Place, Fremont, California 94539, Telephone: 510-656-2900, FAX: 510-651-3025
CL1431
CORPORATION
ELECTRICAL CHARACTERISTICS
Electrical characteristics are guaranteed over full junction temperature range (-55 to 125oC). Ambient temperature must be derated based on
power dissipation and package thermal characteristics. The conditions are: VKA = VREF and IK = 10mA unless otherwise stated.
SYMBOL
VREF
PARAMETER
Reference Voltage
MIN
TYP
MAX
2.510
2.530
0.16
UNIT CIRCUIT
TEST CONDITION
T
A = 25oC
2.490
2.470
2.500
V
V
1
1
1
Over Temp.
TC
VREF with Temp.*
0.06
-1.1
mV/ oC
Ratio of Change in VREF to
Cathode Voltage
V REF
-2
mV/V
2
VK = 3V to 36V
IREF
Reference Input Current
IREF Temp Deviation
0.7
0.4
1.9
1.2
1
µA
µA
mA
nA
Ω
2
2
1
3
1
R1 = 10k; R2 =
Over Temp.
I REF
IK(MIN)
IK(OFF)
ZKA
Min IK for Regulation
Off State Leakage
0.4
0.04
0.15
250
0.2
VREF = 0V, VKA = 36V
Dynamic Output Impedance
f ≤ 1kHz, IK = 1 to 100mA
*CALCULATING AVERAGE TEMPERATURE COEFFICIENT (TC)
%
∆VREF (mV)
• TC in mV/oC =
• TC in %/oC =
• TC in ppm/oC =
0
0
0
–10
–20
∆TA
∆VREF
∆VREF
VREF at 25oC
∆T
x 100
5000
0.5
∆TA
–55 –25
0
25 50 75 100 125
∆VREF
VREF at 25oC
x 106
TEMPERATURE (˚C)
0.06 mV/˚C
∆TA
0.002 %/˚C
24 ppm/˚C
1J-24
TEST CIRCUITS
VIN
VKA
VIN
VKA
VIN
VKA= VREF
IK
IK(OFF)
IK
IREF
R1
(VREF
R2
IREF
)
1G-38
1G-39
1G-40
TEST CIRCUIT 1
TEST CIRCUIT 2
TEST CIRCUIT 3
CALOGIC CORPORATION, 237 Whitney Place, Fremont, California 94539, Telephone: 510-656-2900, FAX: 510-651-3025
CL1431
CORPORATION
TYPICAL PERFORMANCE CURVES
LOW CURRENT OPERATING
CHARACTERISTICS
HIGH CURRENT OPERATING
CHARACTERISTICS
900
800
700
600
500
400
300
200
100
0
150
125
100
75
V
= V
V
= V
REF
KA
REF
KA
TEMPERATURE RANGE: –55 to 125˚C
TEMPERATURE RANGE: –55 to 125˚C
50
125˚C
25˚C
25
0
–55˚C
–25
–50
–75
–100
–100
–200
–1.0
0
1.0
2.0
3.0
–2
–1
V – CATHODE VOLTAGE (V)
KA
0
1
2
3
V
– CATHODE VOLTAGE (V)
1G-41
1G-42
KA
REFERENCE VOLTAGE vs
AMBIENT TEMPERATURE
OFF STATE LEAKAGE
= 36V
100
10
2.53
2.52
2.51
2.50
2.49
2.48
2.47
2.46
2.45
V
V
V
= V
REF
KA
KA
I = 10mA
K
= 0V
REF
V
= 2.500V AT 25˚C
1
REF
0.1
0.01
–60 –30
0
30
60
90 120
–60 –30
0
30
60
90 120
T
– AMBIENT TEMPERATURE (˚C)
T
– AMBIENT TEMPERATURE (˚C)
A
1G-43
1J-25
A
REFERENCE
INPUT CURRENT
REFERENCE VOLTAGE
LINE REGULATION
3.0
2.5
2.0
1.5
1.0
0.5
0
0
–10
–20
–30
–40
–50
R1 = 10kΩ
R2 = ∞
I
= 10mA
K
–55˚C
0˚C
25˚C
75˚C
125˚C
I
= 10mA
K
TEMPERATURE RANGE: –55 to 125˚C
–60 –30
0
30
60
90 120
0
3
6
9
12 15 18 21 24 27 30
– CATHODE VOLTAGE (V)
KA
T
– AMBIENT TEMPERATURE (˚C)
V
1G-45
1G-46
A
CALOGIC CORPORATION, 237 Whitney Place, Fremont, California 94539, Telephone: 510-656-2900, FAX: 510-651-3025
CL1431
CORPORATION
TYPICAL PERFORMANCE CURVES (continued)
LOW FREQUENCY DYNAMIC
OUTPUT IMPEDANCE
NOISE VOLTAGE
70
0.150
0.125
0.100
0.075
0.050
0.025
0.0
V
= V
KA
REF
= 1 TO 100mA
I
60
50
40
30
20
KA
f ≤ 1kHz
V
= V
REF
KA
10
I
= 10mA
= 25˚C
K
T
A
0
10
100
1k
10k
100k
–60 –30
0
30
60
90 120
f – FREQUENCY (Hz)
T
A
– FREE AIR TEMPERATURE
1G-47
1G-48
DYNAMIC OUTPUT
IMPEDANCE
= 25˚C
100
10
T
A
I
= 1 TO 100mA
K
1.0
0.1
0.01
1k
10k
100k
1M
10M
f – FREQUENCY (Hz)
1G-49
SMALL SIGNAL GAIN
vs FREQUENCY
70
60
50
40
30
20
10
0
TEMPERATURE RANGE: –55 to 125˚C
OUT
230Ω
15k
IK
9µF
I
= 10mA
K
8.25k
GND
1H-01
1k
10k
100k
1M
10M
f – FREQUENCY (Hz)
1J-26
CALOGIC CORPORATION, 237 Whitney Place, Fremont, California 94539, Telephone: 510-656-2900, FAX: 510-651-3025
CL1431
CORPORATION
TYPICAL PERFORMANCE CURVES (continued)
PULSE RESPONSE
6
INPUT
INPUT
MONITOR
220
Ω
5
OUT
4
3
2
OUTPUT
50Ω
fP = 100kHz
1
GND
1H-03
0
–1
0
1 2 3 4 5 6 7 8 9 10 11 12
t – TIME (µs)
1H-02
STABILITY BOUNDARY
CONDITIONS
100
90
80
70
60
50
40
30
20
10
0
A: V = V
KA REF
B: V = 5V AT I = 10mA
KA
150Ω
K
C: V = 10V AT I = 10mA
KA
K
D: V = 15V AT I = 10mA
KA
K
IK
C
STABILITY
REGION
CL
10k
A
B
1H-05
D
T
= 25˚C
1
A
0
2
3
4
5
6
7
10 10 10 10 10 10 10 10
C
– LOAD CAPACITANCE (pF)
1H-04
L
Information furnished by Calogic is believed to be accurate and reliable. However, no responsibility is assumed for its use: nor for any infringement of patents or other
rights of third parties which may result from its use. No license is granted by implication or otherwise under any patent rights of Calogic.
CALOGIC CORPORATION, 237 Whitney Place, Fremont, California 94539, Telephone: 510-656-2900, FAX: 510-651-3025
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