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Micropower Voltage Reference Diode
CORPORATION
CLM285-1.2 / CLM385-1.2
FEATURES ORDERING INFORMATION Part CLM285Y1 CLM385T1 CLM385N1 CLM385Y1 Package Max Tempco (ppm) Temp Range SOIC TO-46 TO-92 SOIC 100 100 100 100 -40oC to +85oC 0oC to +70oC 0oC to +70oC 0oC to +70oC
* Tight Tolerance . . . . . . . . . . . . . . . . . . . . . . . . . 1% - 2% * Operating Current . . . . . . . . . . . . . . . . . . . . 10A - 20mA * Dynamic Impedance . . . . . . . . . . . . . . . . . . . . . . . . . . 1 * Low Temperature Coefficient
PRODUCT DESCRIPTION The CLM285 / 385 - 1.2 are micropower 2 terminal band- gap voltage regulator diodes. Operating over a wide current range of 10A to 20mA with low dynamic impedance and stable temperature characteristics. Calogic utilizes on-chip trimming to provide tight voltage tolerances. The devices are excellent in portable meters, regulators or general purpose analog circuitry with battery life approaching shelf life.
PIN CONFIGURATIONS
SO-8
TO-92
+ 8
NC 7
NC 6
NC 5
3
2
1
1 NC 2 NC 3 NC 4
TO-92 (N-SUFFIX) BOTTOM VIEW
SO PACKAGE (Y-SUFFIX) BOTTOM VIEW
1004
CLM285-1.2 / CLM385-1.2
CORPORATION
ABSOLUTE MAXIMUM RATINGS Reverse Current . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 30mA Forward Current. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 10mA Operating Temperature Range CLM285-1.2 . . . . . . . . . . . . . . . . . . . . . . . . -40oC to +85oC CLM385-1.2 . . . . . . . . . . . . . . . . . . . . . . . . . . 0oC to +70oC Storage Temperature . . . . . . . . . . . . . . . . . . -55oC to +150oC Soldering Information TO-92 Package (10 sec.). . . . . . . . . . . . . . . . . . . . . 260oC SO Package: Vapor Phase (60 sec.) . . . . . . . . . . 215oC Infrared (15 sec.) . . . . . . . . . . . . . . 220oC
ELECTRICAL CHARACTERISTICS (Note 1)
CLM285-1.2 PARAMETER TYP TESTED LIMIT (NOTE 2) 1.220 1.245 DESIGN LIMIT (NOTE 3) TYP CLM385-1.2 UNITS TESTED DESIGN (LIMITS) LIMIT LIMIT (NOTE 2) (NOTE 3) 1.223 1.247 1.225 1.245 15 1 10 1 60 20 50 100 50 100 10 1.5 20 1.5 VMIN VMAX VMIN VMAX A mV mV V ppm ppm/oC IMIN I R 1mA 1mA IR 20mA IR = 100A, f = 20Hz IR = 100A 10Hz f 10kHz IR = 100A, T = 1000Hr TA = 25oC .0.1oC IR = 100A CONDITIONS TA = 25oC, 1MIN I R I MAX CLM285-1.2/CLM385B-1.2 CLM385-1.2
Reverse Breakdown Voltage Minimum Operating Current Reverse Breakdown Voltage Change with Current Reverse Dynamic Impedance Wideband Noise (rms) Long Term Stability Average Temperature Coefficient (Note 4)
1.235
1.235 1.235
8
8 1 10
10 1.5 20 1.5
8
1 60 20
Note 1: Parameters identified with boldface type apply at temperature extremes and for IMIN < I R < 20mA, unless otherwise specified. All other numbers apply at TA = TJ = 25oC. Note 2: Guaranteed and 100% production tested. Note 3: Guaranteed (but not 100% production tested) over the operating temperature and input current ranges. These limits are not to be used to calculate outgoing quality levels. Note 4: The average temperature coefficient is defined as the maximum deviation of reference voltage at all measured temperatures between the operating TMAX and TMIN, divided by TMAX-TMIN. The measured temperatures are -55oC, -40 oC, 0oC, 25 oC, 70 oC, 85oC, 125oC. Note 5: For elevated temperature operation, T j max is: CLM285 125oC CLM385 100oC
Thermal Resistance ja (Junction to Ambient) jc (Junction to Case) TO-92 180oC/W (0.4" leads) 170oC/W (0.125" leads) N/A SO-8 165oC/W N/A
CLM285-1.2 / CLM385-1.2
CORPORATION
APPLICATIONS
WIDE INPUT RANGE REFERENCE VIN = 2.3V TO 30V LM334 Adustable Current Source 4.3k OUT 1.2V CLM385-1.2
CENTIGRADE THERMOMETER
V
+ R V1 V2 90k
2.2k 25k
LM334 V -
OUTPUT 1mV/C
1.5V*
27k 7.2k
CLM385-1.2
R1 1k
CALIBRATION 1. ADJUST R1 SO THAT V1 = TEMP AT 1mV/K 2. ADJUST V2 TO 273.2mV * I Q FOR 1.3V TO 1.6V BATTERY VOLTAGE = 50A TO 150 A

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