MC33984CHFKR2 Freescale Semiconductor, MC33984CHFKR2 Datasheet - Page 29

• Manufacturer Part Number: MC33984CHFKR2
• Description: Power Switch ICs - Power Distribution Dual 4mOhms smart
• Manufacturer: Freescale Semiconductor

Specifications of MC33984CHFKR2

• Rohs: yes
• On Resistance (max): 4 mOhms
• On Time (max): 100 us
• Off Time (max): 500 us
• Operating Supply Voltage: 6 V to 27 V
• Maximum Operating Temperature: + 125 C
• Package / Case: PQFN-16
• Minimum Operating Temperature: - 40 C

Table 16. Serial Output Bit Map Description
Table 17. Fault Register
Previous Address SOA[2:0] = 011
the over-current fault blanking time, illustrated in
OD2 reports if the over-current detection timeout feature is
active. OD3 reports if the open load circuitry is active.
Previous Address SOA[2:0] =100
DICR.
Analog Integrated Circuit Device Data
Freescale Semiconductor
SOA3 SOA2 SOA1 SOA0
s = Selection of output: Logic [0] = HS0, Logic [1] = HS1. 
x = Don’t care.
OD7
OD7 (s) = Selection of output: Logic [0] = HS0, Logic [1] = HS1.
OD6 (OTF) = Over-temperature Flag.
OD5 (OCHFs) = Over-current High Flag. (This fault is latched.)
OD4 (OCLFs) = Over-current Low Flag. (This fault is latched.)
OD3 (OLFs) = Open Load Flag.
OD2 (UVF) = Under-voltage Flag. (This fault is latched or not
latched.)
OD1 (OVF) = Over-voltage Flag.
OD0 (FAULT) = This flag reports a fault and is reset by a read
operation.
FAULT report of any fault on HS0 or HS1
Note The
by a new Switch ON command (via SPI or direct input IN).
s
x
s
s
s
0
1
0
1
x
Data returned in bits OD1 and OD0 are current values for
The returned data contain the programmed values in the
s
Previous STATR
D7, D2, D1, D0
0
0
0
0
1
1
1
1
1
1
OD6
OTF
FS
pin reports a fault. For latched faults, this pin is reset
0
0
1
1
0
0
0
1
1
1
OCHF
OD5
s
0
1
0
1
0
1
1
0
0
1
OCLFs
OD4
OD7
0
1
0
1
–
s
x
s
s
s
OLFs
OD3
OD2
UVF
OTFs
OD6
0
0
0
1
1
1
1
1
–
Table
OD1
OVF
OCHFs
13. Bit
OD5
FAULT
0
1
1
0
0
0
1
1
–
OD0
Serial Output Returned Data
OCLFs
Previous Address SOA[2:0] = 101
Previous Address SOA[2:0] = 110
Table 18. Pin Register
Previous Address SOA[2:0] =111
received, so bits OD2:OD0 are null, or 000.
OD4
1
0
1
0
1
1
0
0
–
• SOA3 = 0. The returned data contain the programmed
• SOA3 = 1. The returned data contain the programmed
• SOA3 = 0. OD3:OD0 return the state of the IN1, IN0,
• SOA3 = 1. The returned data contain the programmed
Null Data. No previous register Read Back command
IN1 Pin
OD3
values in the OSDR. Bit OD3 (FSM_HS0) reflects the
state of the output HS0 in the Fail-safe Mode after a
watchdog timeout occurs.
values in the WDR. Bit OD2 (WDTO) reflects the status
of the watchdog circuitry. If WDTO bit is Logic [1], the
watchdog has timed out and the device is in Fail-safe
Mode. If WDTO is Logic [0], the device is in Normal
Mode (assuming the device is powered and not in Sleep
Mode), with the watchdog either enabled or disabled.
Bit OD3 (FSM_HS1) reflects the state of the output HS1
in the Fail-safe Mode after a watchdog timeout occurs.
FSI, and WAKE pins, respectively
values in the UOVR. Bit OD1 reflects the state of the
under-voltage protection and bit OD0 reflects the state
of the over-voltage protection. Refer to
See
FAST SR s CSNS high s
CSNS1
FSM_HS0
FSM_HS1
OL_DIS s
SOCHs
IN1 Pin
OLFs
OD3
Table 1
–
IN0 Pin
EN
OD2
LOGIC COMMANDS AND REGISTERS
CD_DIS s
IN1_SPI
SOCL2s
IN0 Pin
WDTO
OSD2
FUNCTIONAL DEVICE OPERATION
OD2
UVF
–
–
FSI Pin
OD1
CSNS0
SOCL1s
OCLT1s
IN DIS s
FSI Pin
UV_dis
OSD1
WD1
OD1
OVF
(Table
–
EN
Table
18).
WAKE Pin
WAKE Pin
SOCL0s
IN0_SPI
OCLT0s
FAULT
OV_dis
OD0
16).
OSD0
A/O s
WD0
OD0
–
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