MAX5978ETJ+ Maxim Integrated Products, MAX5978ETJ+ Datasheet - Page 20

• 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
The current-sense signal is sampled by the internal
10-bit, 10ksps ADC, and the most recent results are
stored in registers for retrieval through the I
The current conversion values are 10 bits wide, with the
8 high-order bits written to one 8-bit register and the 2
low-order bits written to the next-higher 8-bit register
address (Tables 8 and 9). This allows use of just the
high-order byte in applications where 10-bit precision is
not required. This split 8-bit/2-bit storage scheme is used
Table 8. ADC Current-Conversion Results Register Format (High-Order Bits)
Table 9. ADC Current-Conversion Results Register Format (Low-Order Bits)
Table 10. Overcurrent Warning Threshold Register Format (High-Order Bits)
Table 11. Overcurrent Warning Threshold Register Format (Low-Order Bits)
20
Description:
Register Title:
Register Addresses:
Description:
Register Title:
Register Addresses:
Description:
Register Title:
Register Addresses:
Description:
Register Title:
Register Addresses:
inew_9
Bit 7
Bit 7
R/W
Bit 7
Bit 7
oi_9
R/W
—
—
R
R
inew_8
Bit 6
Bit 6
Bit 6
R/W
R/W
Bit 6
oi_8
—
—
R
R
Digital Current Monitoring
Most recent current-conversion result, high-order bits [9:2]
adc_cs_msb
0x00
Most recent current-conversion result, low-order bits [0:1]
adc_cs_ lsb
0x01
Overcurrent warning threshold high-order bits [9:2]
oithr_msb
0x22
Overcurrent warning threshold low-order bits [1:0]
oithr_lsb
0x23
inew_7
Bit 5
Bit 5
R/W
Bit 5
R/W
Bit 5
oi_7
—
—
R
R
2
inew_6
C interface.
Bit 4
Bit 4
R/W
Bit 4
R/W
Bit 4
oi_6
—
—
R
R
inew_5
Bit 3
Bit 3
Bit 3
Bit 3
R/W
R/W
oi_5
—
—
R
R
throughout the device for ADC conversion results and
digital comparator thresholds.
Once the PG output is asserted, the current-sense sam-
ples are continuously compared to the programmable
overcurrent warning register value. If the measured cur-
rent value exceeds the warning level, the ALERT output
is asserted. The device response to this digital com-
parator is not altered by the setting of the PROT input
(Tables 10 and 11).
inew_4
Bit 2
Bit 2
Bit 2
Bit 2
R/W
R/W
oi_4
—
—
R
R
inew_1
inew_3
Bit 1
R/W
Bit 1
R/W
Bit 1
Bit 1
oi_3
oi_1
R
R
inew_2
inew_0
Bit 0
Bit 0
R/W
Bit 0
Bit 0
oi_2
R/W
oi_0
R
R
RESET
VALUE
RESET
VALUE
RESET
VALUE
VALUE
RESET
0x00
0x00
0xFF
0x03
—
—
—
—