CS1112 Datasheet, PDF (1/12 Pages) ON Semiconductor – Quad Power Output Driver

CS1112
Quad Power Output Driver
The CS1112 is a Power Output Driver. The IC incorporates four
protected DMOS low–side drivers designed to drive inductive and
resistive loads in an automotive environment. The outputs are
controlled by an 8–bit serial peripheral interface (SPI) or its associated
parallel input. Each output contains overcurrent protection, open load
detection, and inductive flyback clamps. The device is overvoltage
protected. Overcurrent and open load faults are reported over the SPI
port, and at the STATUS lead.
I/O Control
SPI communication is initiated by asserting CSB low. Data at the SI
lead is transferred on the rising edge of SCLK. The MSB is transferred
first. The outputs become active at the rising edge of CSB. Diagnostic
status bits are transferred out the SO lead at the falling edge of SCLK.
The SO lead is high impedance while CSB is high. An open drain
output, (STATUS) reports a fault (short to V_PWR, GND, or open load)
has occurred at one or more of the outputs.
Protection
Each output independently detects shorts to V_PWR while the output
is “on” and open load/short to ground while the output is “off”. The
fault register will be set if a fault occurs at the output. The fault register
will be reset if the fault condition is removed from the output. The
fault data is latched when CSB is asserted low.
If an overcurrent condition or short circuit to V_BATT occurs, the
output goes into a low duty cycle mode for the duration of the fault.
The outputs are disabled during an overvoltage or undervoltage
condition.
Features
• 4.0 MHz Serial Input Bus
• Parallel Input Control
• 1.0 Ω DMOS Drivers (typ)
• Power On Reset
• Internal Flyback Clamps
• Status Output
• Fault Protection
– 46 V Peak Transient
– Power Limiting
– Undervoltage
– Overvoltage
• Fault Reporting
– Open Load
– Short Circuit
• 8 Internally Fused Leads
http://onsemi.com
SO–24L
DW SUFFIX
CASE 751E
PIN CONNECTIONS AND
MARKING DIAGRAM
1
V_DD
V_PWR
OUT0
IN0
GND
GND
GND
GND
IN1
OUT1
SI
CSB
24
R_OSC
STATUS
OUT3
IN3
GND
GND
GND
GND
IN2
OUT2
SO
SCLK
A
WL, L
YY, Y
WW, W
= Assembly Location
= Wafer Lot
= Year
= Work Week
ORDERING INFORMATION
Device
Package
Shipping
CS1112YDWF24 SO–24L 31 Units/Rail
CS1112YDWFR24 SO–24L 1000 Tape & Reel
© Semiconductor Components Industries, LLC, 2000
1
October, 2000 – Rev. 10
Publication Order Number:
CS1112/D