Texas Instruments UC39432N, UC39432DTR, UC39432D, UC39432BN, UC39432BDTR Datasheet
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UC19432
UC29432
UC39432
UC39432B
DESCRIPTION
The UC39432 is an adjustable precision analog controller with 100mA sink
capability if the ISET pin is grounded. A resistor between ISET and ground
will modify the transconductance while decreasing the maximum current
sink. This will add further control in the optocoupler configuration. The
trimmed precision reference along with the non-inverting error amplifier inputs are accessible for custom configuration. A sister device, the UC39431
adjustable shunt regulator, has an on-board resistor network providing six
preprogrammed voltage levels, as well as external programming capability.
Precision Analog Controller
FEATURES
• Programmable Transconductance for
Optimum Current Drive
• Accessible 1.3V Precision Reference
• Both Error Amplifier Inputs Available
• 0.7% Overall Reference Tolerance
• 0.4% Initial Accuracy
• 2.2V to 36.0V Operating Supply
Voltage and User Programmable
Reference
• Reference Accuracy Maintained for
Entire Range of Supply Voltage
• Superior Accuracy and Easier
Compensation for Optoisolator
Application
• Low Quiescent Current (0.50mA Typ)
03/99
BLOCK DIAGRAM
UDG-95093
2
UC19432
UC29432
UC39432
UC39432B
DIL-8, SOIC-8 (Top View)
N or J, D Package
ABSOLUTE MAXIMUM RATINGS
Supply Voltage: VCC. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 36V
Regulated Output: V
COLL
. . . . . . . . . . . . . . . . . . . . . . . . . . . 36V
EA Input: SENSE, EA+ . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6V
EA Compensation: COMP. . . . . . . . . . . . . . . . . . . . . . . . . . . 6V
Reference Output: REF. . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6V
Output Sink Current: I
COLL
. . . . . . . . . . . . . . . . . . . . . . . 140mA
Output Source Current: ISET . . . . . . . . . . . . . . . . . . . . –140mA
Power Dissipation at TA≤ 25°C (DIL-8) . . . . . . . . . . . . . . . . 1W
Derate 8mW/°C for TA> 25°C
Storage Temperature Range . . . . . . . . . . . . . –65°C to +150°C
Junction Temperature. . . . . . . . . . . . . . . . . . . –55°C to +150°C
Lead Temperature (Soldering, 10 sec.). . . . . . . . . . . . . +300°C
Currents are positive into, negative out of the specified terminal. Consult Packaging Section of Databook for thermal limitations and considerations of packages.
ELECTRICAL CHARACTERISTICS: Unless otherwise stated, these specifications apply for T
A
= –55°C to +125°C and
COLL Output = 2.4V to 36.0V for the UC19432, TA= –25°C to +85°C and COLL Output = 2.3V to 36.0V for the UC29432, and T
A
= 0°C to +70°C and COLL Output = 2.3V to 36.0V for the UC39432, VCC = 15V, I
COLL
= 10mA, TA= TJ.
PARAMETER TEST CONDITIONS
MIN TYP MAX UNITS
Reference Voltage Tolerance T
A
= 25°C 19432* 1.295 1.3 1.305 V
39432B 1.29 1.3 1.31 V
Reference Temperature Tolerance V
COLL
= 5.0V 19432* 1.291 1.3 1.309 V
39432B 1.286 1.3 1.314 V
Reference Line Regulation VCC = 2.4V to 36.0V, V
COLL
= 5V 19432* 10 38 mV
39432B 10 57 mV
Reference Load Regulation I
COLL
= 10mA to 50mA, V
COLL
= 5V 19432* 10 38 mV
39432B 10 57 mV
Reference Sink Current 10
A
Reference Source Current –10
A
EA Input Bias Current –0.5 –0.2
A
EA Input Offset Voltage 19432* 4.0 mV
39432B 4.0 mV
EA Output Current Sink (Internally Limited) 16
A
EA Output Current Source –1 mA
Minimum Operating Current VCC = 36.0V, V
COLL
= 5V 0.50 0.80 mA
Collector Current Limit (Note) V
COLL
= VCC = 36.0V, Ref = 1.35V
ISET = GND
130 145 mA
Collector Saturation I
COLL
= 20mA 0.7 1.1 1.5 V
Transconductance (gm) (Note) VCC = 2.4V to 36.0V,
V
COL
= 3V, I
COLL
= 20mA
ISET = GND
19432* –170 –140 –110 mS
39432B –180 –140 –100 mS
Error Amplifier AVOL 60 90 dB
Error Amplifier GBW (Note 1) 3.0 5 MHz
Transconductance Amplifier GBW 3 MHz
* Also applies to the UC29432 and UC39432
Note: Programmed transconductance and collector current limit equations are specified in the ISET pin description.
Note 1: Guaranteed by design. Not 100% tested in production.
CONNECTION DIAGRAM
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