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Электронный компонент: CL432BD

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1.25VPrecision Adjustable
Shunt Reference / Amplifier
Preliminary Product Information
CL432B
FEATURES

Temperature-Compensated: 50ppm/
o
C

Trimmed 2% Bandgap Reference

Internal Amplifier with 150mA Capability

Nominal Temperature Range Extended to 105
o
C

Low Frequency Dynamic Output Impedance: < 150m

Low Output Noise
DESCRIPTION
Calogic's CL432B is a 3-terminal Adjustable Shunt Regulator
highly accurate 1.25V bandgap reference with a 2%
tolerance. The device offers thermal stability, wide operating
current (100mA) and an extended temperature range of 0
o
to
105
o
C for operation in power supply applications. The CL432B
offers a wide operating voltage range of up to 10V and is an
excellent choice for voltage reference requirements in an
isolated feedback circuit for 3.0V to 3.3V switching mode
power supplies. The tight tolerance guarantees a lower
design cost for the power supply manufacturer by virtually
eliminating the need for an extra power supply manufacturing
process of the power supply.
The device is housed in several package options to meet the
designers criteria.
ORDERING INFORMATION
Part
Package
Temperature Range
CL432BLP
TO-92
0 to 105
o
C
CL432BD
8-Pin Plastic SOIC
0 to 105
o
C
CL432BVS
SOT-23
0 to 105
o
C
CL432BS
SOT-89
0 to 105
o
C
CORPORATION
CALOGIC CORPORATION,
237 Whitney Place, Fremont, California 94539, Telephone: 510-656-2900, FAX: 510-651-3025
CATHODE
ANODE
REFERENCE
TO-92 (LP)
1G-33
SOIC (D)
8
7
6
5
1
2
3
4
REFERENCE
ANODE
ANODE
N/C
CATHODE
ANODE
ANODE
N/C
1G-34
1G-35
CATHODE
ANODE
REFERENCE
SOT-89 (S)
PIN CONFIGURATION (Top View)
1J-22
CATHODE
REFERENCE
SOT-23 (VS)
ANODE
CL432B
CORPORATION
ABSOLUTE MAXIMUM RATINGS
SYMBOL
PARAMETER
RATING
UNITS
V
KA
Cathode-Anode Reverse Breakdown
10
V
I
AK
Anode-Cathode Forward Current
1
A
I
KA
Operating Cathode Current
100
mA
I
REF
Reference Input Current
1
mA
P
D
Continuous Power at 25
o
C
TO-92
8L
SOIC
SOT-23
SOT-89
775
750
1000
200
mW
mW
mW
mW
T
J
Junction Temperature
150
o
C
T
STG
Storage Temperature
65 to 150
o
C
T
L
Lead Temperature, Soldering 10 Seconds
300
o
C
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
RATING
UNIT
V
KA
Cathode Voltage
V
REF
to 10
V
I
K
Cathode Current
10
mA
TYPICAL THERMAL RESISTANCES
PACKAGE
JA
JC
TYPICAL DERATING
TO-92
160
o
C/W
80
o
C/W
6.3mW/
o
C
SOIC
175
o
C/W
45
o
C/W
5.7mW/
o
C
SOT-23
575
o
C/W
150
o
C/W
1.7mW/
o
C
SOT-89
110
o
C/W
8
o
C/W
9.1mW/
o
C
CALOGIC CORPORATION,
237 Whitney Place, Fremont, California 94539, Telephone: 510-656-2900, FAX: 510-651-3025
1J-23
ANODE (A)
CATHODE (K)
1.25V
REFERENCE (R)
+
+
FUNCTIONAL BLOCK DIAGRAM
CL432B
CORPORATION
ELECTRICAL CHARACTERISTICS
Electrical characteristics are guaranteed over full junction temperature range (0 to 105
o
C). Ambient temperature must be derated based on
power dissipation and package thermal characteristics. The conditions are: V
KA
= V
REF
and I
K
= 10mA unless otherwise stated.
SYMBOL
PARAMETER
MIN
TYP
MAX
UNIT
TEST CONDITION
V
REF
Output Voltage
1.225
1.250
1.275
V
I
K
= 10mA, T
J
= 25
o
C, V
K
= V
REF
V
REF
Line Regulation
10
15
mV
V
K
= 1.25 to 10V
V
REF
Load Regulation
3
6
mV
I
K
= 1 to 100mA
V
REF
Temperature Deviation
2
6
mV
0 < T
J
< 105
o
C
I
REF
Reference Input Current
3
6
A
I
REF
Reference Input Current Temperature
Coefficient
0.3
0.6
A
0 < T
J
< 105
o
C
I
K(MIN)
Min. Cathode Current for Regulation
0.6
1
mA
I
K(MIN)
Off State Leakage
0.04
500
nA
V
REF
= 0V, V
KA
= 10V
*Temperature deviation is defined as the maximum deviation of the reference over the given temperature range and does not imply an
incremental deviation at any given temperature.
TYPICAL PERFORMANCE CURVES (Not available at time of publishing)
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