CL1431.pdf 데이터시트 (총 6 페이지) - 파일 다운로드 CL1431 데이타시트 다운로드

No Preview Available !

CORPORATION
Precision Adjustable
Shunt Reference
CL1431
FEATURES
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
Robust ESD Protection
PIN CONFIGURATION (Top View)
DESCRIPTION
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
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
CL1431LP
CL1431D
CL1431S
Package
Temperature Range
TO-92
8-Pin Plastic SOIC
SOT-89
-55 to 125oC
-55 to 125oC
-55 to 125oC
TO-92 (LP)
CATHODE
ANODE
REFERENCE
1G-33
CATHODE 1
ANODE 2
ANODE 3
N/C 4
SOIC (D)
8 REFERENCE
7 ANODE
6 ANODE
5 N/C
1G-34
SOT-89 (S)
CATHODE
ANODE
REFERENCE
1G-35
CALOGIC CORPORATION, 237 Whitney Place, Fremont, California 94539, Telephone: 510-656-2900, FAX: 510-651-3025

No Preview Available !

CL1431
CORPORATION
ABSOLUTE MAXIMUM RATINGS
SYMBOL
PARAMETER
RATING
UNITS
VKA
IAK
IKA
IREF
PD
TJ
TSTG
TL
Cathode-Anode Reverse Breakdown
Anode-Cathode Forward Current
Operating Cathode Current
Reference Input Current
Continuous Power Dissipation at 25oC
TO-92
8L SOIC
SOT-89
Junction Temperature
Storage Temperature
Lead Temperature, Soldering 10 Seconds
37
1
250
10
775
750
1000
150
–65 to 150
300
V
A
mA
mA
mW
mW
mW
oC
oC
oC
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
SYMBOL
PARAMETER
VKA Cathode Voltage
IK Cathode Current
RATING
VREF to 36
10
UNIT
V
mA
TYPICAL THERMAL RESISTANCES
PACKAGE
TO-92
SOIC
SOT-89
θJA
160oC/W
175oC/W
110oC/W
θJC
80oC/W
45oC/W
8oC/W
TYPICAL DERATING
6.3mW/oC
5.7mW/oC
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

No Preview Available !

CORPORATION
CL1431
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
PARAMETER
VREF
Reference Voltage
TC VREF with Temp.*
MIN
2.490
2.470
TYP
2.500
0.06
MAX
2.510
2.530
0.16
UNIT CIRCUIT
TEST CONDITION
V 1 TA = 25oC
V 1 Over Temp.
mV/ oC
1
V REF
Ratio of Change in VREF to
Cathode Voltage
-2 -1.1
mV/V
2 VK = 3V to 36V
IREF Reference Input Current
0.7 1.9 µA 2 R1 = 10k; R2 =
I REF
IREF Temp Deviation
0.4 1.2 µA 2 Over Temp.
IK(MIN)
Min IK for Regulation
0.4 1 mA 1
IK(OFF)
Off State Leakage
0.04
250 nA
3 VREF = 0V, VKA = 36V
ZKA Dynamic Output Impedance
0.15 0.2 1 f 1kHz, IK = 1 to 100mA
*CALCULATING AVERAGE TEMPERATURE COEFFICIENT (TC)
000
5000
–10
0.5
VREF
T
–20
–55 –25 0 25 50 75 100 125
TEMPERATURE (˚C)
0.06 mV/˚C
0.002 %/˚C
24 ppm/˚C
1J-24
TEST CIRCUITS
VIN
I REF
VKA = VREF
IK
VIN
R1
(VREF )
R2
I REF
VKA
IK
TC
in
mV/oC
=
VREF (mV)
TA
TC in %/oC =
VREF
VREF
at
25oC
TA
x 100
VREF
TC
in
ppm/oC
=
VREF
at 25oC
TA
x 106
VIN VKA
I K(OFF)
1G-38
TEST CIRCUIT 1
1G-39
TEST CIRCUIT 2
1G-40
TEST CIRCUIT 3
CALOGIC CORPORATION, 237 Whitney Place, Fremont, California 94539, Telephone: 510-656-2900, FAX: 510-651-3025

No Preview Available !

CL1431
CORPORATION
TYPICAL PERFORMANCE CURVES
LOW CURRENT OPERATING
CHARACTERISTICS
900
800 VKA = VREF
TEMPERATURE RANGE: –55 to 125˚C
700
600
500
400 125˚C
300 25˚C
200 –55˚C
100
0
–100
–200
–1.0
0
1.0 2.0 3.0
VKA – CATHODE VOLTAGE (V) 1G-41
OFF STATE LEAKAGE
100
VKA = 36V
VREF = 0V
10
1
0.1
0.01
–60 –30 0 30 60 90 120
TA – AMBIENT TEMPERATURE (˚C) 1G-43
REFERENCE
INPUT CURRENT
3.0
R1 = 10k
R2 =
2.5 I K = 10mA
2.0
1.5
1.0
0.5
0
–60 –30 0 30 60 90 120
TA – AMBIENT TEMPERATURE (˚C) 1G-45
HIGH CURRENT OPERATING
CHARACTERISTICS
150
VKA = VREF
125 TEMPERATURE RANGE: –55 to 125˚C
100
75
50
25
0
–25
–50
–75
–100
–2 –1
0
1
2
VKA – CATHODE VOLTAGE (V)
3
1G-42
REFERENCE VOLTAGE vs
AMBIENT TEMPERATURE
2.53
VKA = VREF
2.52 I K = 10mA
2.51
2.50
2.49
VREF = 2.500V AT 25˚C
2.48
2.47
2.46
2.45
–60 –30 0 30 60 90 120
TA – AMBIENT TEMPERATURE (˚C) 1J-25
REFERENCE VOLTAGE
LINE REGULATION
0
–10
–20
–55˚C
0˚C
25˚C
–30
75˚C
125˚C
–40
I K = 10mA
–50 TEMPERATURE RANGE: –55 to 125˚C
0 3 6 9 12 15 18 21 24 27 30
VKA – CATHODE VOLTAGE (V) 1G-46
CALOGIC CORPORATION, 237 Whitney Place, Fremont, California 94539, Telephone: 510-656-2900, FAX: 510-651-3025

No Preview Available !

CORPORATION
CL1431
TYPICAL PERFORMANCE CURVES (continued)
NOISE VOLTAGE
70
60
50
40
30
20
VKA = VREF
10 I K = 10mA
0 TA = 25˚C
10 100 1k 10k
f – FREQUENCY (Hz)
100k
1G-47
LOW FREQUENCY DYNAMIC
OUTPUT IMPEDANCE
0.150
VKA = VREF
0.125
I KA = 1 TO 100mA
f 1kHz
0.100
0.075
0.050
0.025
0.0
–60 –30 0 30 60 90 120
TA – FREE AIR TEMPERATURE 1G-48
DYNAMIC OUTPUT
IMPEDANCE
100
TA = 25˚C
I K = 1 TO 100mA
10
1.0
0.1
0.01
1k
10k 100k 1M
f – FREQUENCY (Hz)
10M
1G-49
70
60
50
40
30
20
10
0
1k
SMALL SIGNAL GAIN
vs FREQUENCY
TEMPERATURE RANGE: –55 to 125˚C
I K = 10mA
10k 100k 1M
f – FREQUENCY (Hz)
10M
1J-26
15k
9µF
8.25k
IK
OUT
230
GND
1H-01
CALOGIC CORPORATION, 237 Whitney Place, Fremont, California 94539, Telephone: 510-656-2900, FAX: 510-651-3025