MC33298DWR2 Freescale Semiconductor, MC33298DWR2 Datasheet - Page 2

• Manufacturer Part Number: MC33298DWR2
• Description: IC OCTAL SERIAL SWITCH 24-SOIC
• Manufacturer: Freescale Semiconductor
• Type: Low Sider

Specifications of MC33298DWR2

• Input Type: SPI
• Number Of Outputs: 8
• On-state Resistance: 350 mOhm
• Current - Output / Channel: 1A
• Current - Peak Output: 4A
• Voltage - Supply: 9 V ~ 26.5 V
• Operating Temperature: -40°C ~ 125°C
• Mounting Type: Surface Mount
• Package / Case: 24-SOIC (7.5mm Width)
• Lead Free Status / RoHS Status: Contains lead / RoHS non-compliant
• Other names: MC33298DWTR

Table 1. Fault Operation
2
SERIAL OUTPUT (SO) PIN REPORTS
Output OFF, Open Load Fault SO pin reports output OFF open load condition
DEVICE SHUTDOWNS
33298
SFPD
INTERNAL BLOCK DIAGRAM
SCLK
Output ON, Open Load Fault
VDD
RST
CS
SO
SI
10
15
22
16
3
4
9
Over-temperature
Over-temperature
Over-voltage
Over-voltage
Over-current
Over-current
Fault Timers
25µA
10µA
10µA
Line Driver
10µA
Serial D/O
10µA
+
+
+
Over-voltage condition reported
Fault reported by Serial Output (SO) pin
SO pin reports short to battery/supply or over-current condition
Not reported
Total device shutdown at V
Outputs can be turned back on with a new SPI command after V
shutdown voltage including hysteresis.
Only the output experiencing an over-temperature condition turns off.
Only the output experiencing an over-current condition shuts down at 3.0A to 6.0A after a 25ms to 100ms delay,
with SFPD pin grounded. All outputs will continue to operate in a current limit mode, with no shutdown, if the
SFPD pin is at 5.0V.
Over -voltage
Figure 2. 33298 Simplified Block Diagram
OVD
V DD
RB
SFPD
SFL
CS
SCLK
SI
SO
CSI
CSBI
INTERNAL BLOCK DIAGRAM
Interface
Logic
SPI
PWR
VPWR
GE
OT
OF
SF
Regulator
= 28 to 36V. All outputs are latched off while the SPI register is reset (cleared).
Voltage
21
From Detectors 1 to 7
Short-circuit
Over-temperature
Control
Detect
Detect
Open
Gate
Load
Bias
Detect
53V
PWR
lLimit
To Gates
Analog Integrated Circuit Device Data
1 to 7
has decayed below the over-voltage
–
+
R S
Freescale Semiconductor
OUTPUT 0
24
OUTPUT
2
11 - 14
23
GND 5-8
17-20
1 to 7