CALOGIC CL432AS 1.25vprecision adjustable shunt reference / amplifier Datasheet

1.25VPrecision Adjustable
Shunt Reference / Amplifier
CORPORATION
Preliminary Product Information
CL432A
DESCRIPTION
FEATURES
•
•
•
•
•
•
o
Temperature-Compensated: 50ppm/ C
Trimmed 1% Bandgap Reference
Internal Amplifier with 150mA Capability
Nominal Temperature Range Extended to 105oC
Low Frequency Dynamic Output Impedance: < 150m
Low Output Noise
Calogic’s CL432A is a 3-terminal Adjustable Shunt Regulator
highly accurate 1.25V bandgap reference with a 1%
tolerance. The device offers thermal stability, wide operating
current (100mA) and an extended temperature range of 0o to
105oC for operation in power supply applications. The CL432A
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
CL432ALP
CL432AD
CL432AVS
CL432AS
TO-92
8-Pin Plastic SOIC
SOT-23
SOT-89
Temperature Range
0 to 105oC
0 to 105oC
0 to 105oC
0 to 105oC
PIN CONFIGURATION (Top View)
TO-92 (LP)
SOIC (D)
CATHODE
CATHODE
1
8
REFERENCE
ANODE
2
7
ANODE
ANODE
3
6
ANODE
N/C
4
5
N/C
ANODE
REFERENCE
1G-33
1G-34
SOT-89 (S)
SOT-23 (VS)
CATHODE
ANODE
CATHODE
ANODE
REFERENCE
REFERENCE
1J-22
1G-35
CALOGIC CORPORATION, 237 Whitney Place, Fremont, California 94539, Telephone: 510-656-2900, FAX: 510-651-3025
CL432A
CORPORATION
ABSOLUTE MAXIMUM RATINGS
SYMBOL
PARAMETER
RATING
UNITS
VKA
Cathode-Anode Reverse Breakdown
10
V
IAK
Anode-Cathode Forward Current
1
A
IKA
Operating Cathode Current
100
mA
IREF
Reference Input Current
1
mA
PD
Continuous Power at 25 oC
TO-92
8L SOIC
SOT-23
SOT-89
775
750
1000
200
mW
mW
mW
mW
TJ
Junction Temperature
150
o
C
TSTG
Storage Temperature
–65 to 150
o
C
300
o
C
TL
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
SYMBOL
TYPICAL THERMAL RESISTANCES
PARAMETER
RATING
UNIT
PACKAGE
θJA
θJC
TYPICAL DERATING
VKA
Cathode Voltage
VREF to 10
V
TO-92
160 oC/W
80 oC/W
6.3mW/oC
IK
Cathode Current
10
mA
SOIC
175 oC/W
45 oC/W
5.7mW/oC
SOT-23
575oC/W
150 oC/W
1.7mW/oC
SOT-89
110oC/W
8oC/W
9.1mW/oC
FUNCTIONAL BLOCK DIAGRAM
CATHODE (K)
+
–
REFERENCE (R)
+
–
1.25V
ANODE (A)
1J-23
CALOGIC CORPORATION, 237 Whitney Place, Fremont, California 94539, Telephone: 510-656-2900, FAX: 510-651-3025
CL432A
CORPORATION
ELECTRICAL CHARACTERISTICS
Electrical characteristics are guaranteed over full junction temperature range (0 to 105 oC). 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
MIN
TYP
MAX
UNIT
1.237
1.250
1.263
V
TEST CONDITION
IK = 10mA, T J = 25oC, VK = VREF
VREF
Output Voltage
VREF
Line Regulation
10
15
mV
VK = 1.25 to 10V
VREF
Load Regulation
3
6
mV
IK = 1 to 100mA
VREF
Temperature Deviation
2
6
mV
0 < TJ < 105 oC
IREF
Reference Input Current
3
6
µA
I REF
Reference Input Current Temperature
Coefficient
0.3
0.6
µA
IK(MIN)
Min. Cathode Current for Regulation
0.6
1
mA
IK(MIN)
Off State Leakage
0.04
500
nA
0 < TJ < 105 oC
VREF = 0V, VKA = 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
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