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L6280 Datasheet

  • L6280

  • THREE CHANNELS MULTIPOWER DRIVER SYSTEM

  • 26頁

  • STMICROELECTRONICS   STMICROELECTRONICS

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L6280
THREE CHANNELS MULTIPOWER DRIVER SYSTEM
ADVANCE DATA
PROGRAMMABLE
CONFIGURATION
(CHANNELS 1 AND 2)
OUTPUT CURRENT UP TO 1A (CHANNELS
1 AND 2)
1 SENSE PER CHANNEL
OUTPUT CURRENT CHANNEL 3 UP TO 3A
DIRECT INTERFACE TO MICROPROCESSOR
C-MOS COMPATIBLE INPUT
INTERNAL DC-DC CONVERTER FOR LOGIC
SUPPLY (+5V)
POWER FAIL
WATCHDOG MANAGEMENT
THERMAL PROTECTION
VERY LOW DISSIPATED POWER (SUIT-
ABLE FOR USE IN BATTERY SUPPLIED AP-
PLICATIONS)
DESCRIPTION
The L6280 is a multipower driver system for motor
and solenoid control applicatios that connects di-
rectly to a microprocessor bus. Realized in Mul-
tipower BCD technology -- which combines isolated
DMOS transistors, CMOS & bipolar circuits on the
BLOCK DIAGRAM
MULTIPOWER BCD TECHNOLOGY
PLCC44
ORDERING NUMBER:
L6280
same chip -- it integrates two 1A motor drivers
(channels 1 & 2) a 3A solenoid driver (channel 3)
and a 5V switchmode power supply.
All of the drivers in the L6280 are controlled by a
microprocessor which loads commands and
reads diagnostic information, treating the device
as a peripheral. Channels 1 and 2 feature a pro-
grammable output DMOS transistor configuration
that can be set during the initialization phase.
Thanks to very low dissipation of its DMOS power
stages the L6280 needs no heatsink and is pack-
aged in a 44-lead PLCC package.
January 1992
1/26
This is advanced information on a new product now in development or undergoing evaluation. Details are subject to change without notice.

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