CA3272A, CA3292A Quad-Gated Inverting Power Drivers with Fault Mode Diagnostic Flag Output
Drivers for interfacing low-level logic to inductive and resistive
loads such as: relays, solenoids, AC and DC motors and resistive
loads such as incandescent lamps and other power drivers. Each
output is an open collector protected power transistor driver. The
CA3292A is similar to the CA3272A, except for an added collector-to-base
Zener diode that provides over-voltage clamping protection
on each power switching output. The CA3292A block
diagram is shown for one switching channel with fault detection
logic plus the output fault driver circuit for all four switching channels.
The FAULT output pin provides a flag output when a fault
condition occurs. All four Output Power Driver stages are shown
in the Block Diagrams.
The ENABLE input is common to each of the four power switches
and when low, disables the FAULT output. From the Input to Output,
each switch is inverting. When IN is high, OUT is low and the
transistor switch is “ON” (conducting). The block diagram shows
the functional logic associated with fault detection. The Fault
Sense circuit detects the IN and OUT states and switches QF
“ON” if a fault is detected. When a fault is detected, transistor QF
activates a current sink pull-down at the FAULT pin. A resistive
load from the FAULT pin to the power supply is used to detect a
fault as a low state. Both shorted and open load conditions are
detected.
Note: The CA3272A replaces the CA3272 for new designs.
Refer to the Fault Sink Current specifications when making
design changes. The CA3272A and CA3292A have increased
pull-down current drive from the FAULT output pin.
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CA3272A 、 CA3292A 、 CA3272AQ 、 CA3292AQ 、 CA3272AM 、 CA3292AM |
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Quad-Gated Inverting Power Drivers with Fault Mode Diagnostic Flag Output |
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[ Solenoids ][ Relays ][ Lamps ][ Steppers ][ Injectors ][ Motors ][ Automotive ][ Appliance ][ Industrial Control ][ Robotics ] |
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Datasheet |
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ISO9001 |
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Please see the document for details |
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28 Ld PLCC;28 Ld SOIC |
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English Chinese Chinese and English Japanese |
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July 1997 |
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Rev.7.00 |
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FN2223 |
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888 KB |
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