MAX5978ETJ+ Maxim Integrated Products, MAX5978ETJ+ Datasheet - Page 30

• Manufacturer Part Number: MAX5978ETJ+
• Description: Hot Swap & Power Distribution 0-16V HOTSWAP CONTLR W/10BIT CUR VOLT MON
• Manufacturer: Maxim Integrated Products

Specifications of MAX5978ETJ+

• Product: Controllers & Switches
• Supply Voltage (max): 16 V
• Supply Voltage (min): 0 V
• Power Dissipation: 2759 mW
• Operating Temperature Range: - 40 C to + 85 C
• Mounting Style: SMD/SMT
• Supply Current: 2.5 mA
• Package / Case: TQFN-32
• Lead Free Status / RoHS Status: Lead free / RoHS Compliant

0 to 16V, Hot-Swap Controller with 10-Bit
Current, Voltage Monitor, and 4 LED Drivers
Table 43. Circular Buffer Stop-Delay Register Format
Table 44. Force-On Control Register Format
Table 45. Force-On Key Register Format
When the force-on bit is set to 1 in register foset[0] (see
Table 44), the channel is enabled regardless of the ON
pin voltage or the EN1 and EN2 bits in register chxen. In
forced-on operation, all functions operate normally with
the notable exception that the channel does not shut
down due to any fault conditions that may arise.
There is a force-on key register fokey that must be set to
0xA5 in order for the force-on function to become active
(see Table 45). If this register contains any value other
30
Description:
Register Title:
Register Address:
Description:
Register Title:
Register Address:
Description:
Register Title:
Register Address:
fokey[7]
Bit 7
Bit 7
Bit 7
R/W
R
R
0
0
fokey[6]
Bit 6
R/W
Bit 6
Bit 6
R
0
R
0
Circular buffer stop delay: any integer number between 0 and 50 samples that are to be recorded to a
buffer after a shutdown event, before the buffer stops storing new data
cbuf_dly_stop
0x40
Stop_dly[5]
Force-on key register (must contain 0xA5 to unlock force-on feature)
fokey
0x39
Force-on control register
foset
0x3A
fokey[5]
Bit 5
R/W
Bit 5
Bit 5
R/W
R
0
Force-On Function
Stop_dly[4]
fokey[4]
Bit 4
R/W
Bit 4
R/W
Bit 4
R
0
Stop_dly[3]
fokey[3]
Bit 3
R/W
Bit 3
R/W
Bit 3
R
0
than 0xA5, writing 1 to the force-on bits in register foset
has no effect. This provides protection against acciden-
tal force-on operation that might otherwise be caused by
an erroneous I
The device provides detailed information about any fault
conditions that have occurred. The FAULT output spe-
cifically indicates a circuit-breaker shutdown event, while
the ALERT output is asserted whenever a problem has
occurred that requires attention or interaction.
Stop_dly[2]
fokey[2]
Bit 2
R/W
Bit 2
Bit 2
R/W
R
0
2
C write.
Stop_dly[1]
Fault Logging and Indications
fokey[1]
Unused
Bit 1
R/W
Bit 1
R/W
Bit 1
R/W
Stop_dly[0]
fokey[0]
Bit 0
R/W
R/W
Bit 0
R/W
Bit 0
fo
VALUE
VALUE
VALUE
RESET
RESET
RESET
0x19
0x00
0x00
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