max5961 Maxim Integrated Products, Inc., max5961 Datasheet - Page 18

• Manufacturer Part Number: max5961
• Description: 0 To 16v, Quad, Hot-swap Controller With 10-bit Current And Voltage Monitor
• Manufacturer: Maxim Integrated Products, Inc.

0 to 16V, Quad, Hot-Swap Controller
with 10-Bit Current and Voltage Monitor
Figure 1 shows the detailed logic operation of the hot-
swap enable signals Chx_EN1, Chx_EN2, and ON_, as
well as the effect of various fault conditions.
An input undervoltage threshold control for enabling the
hot-swap channel can be implemented by placing a
resistive divider between the drain of the hot-swap FET
18
Figure 1. Channel On-Off Control Logic Functional Schematic
Table 4b. status1 Register Format
Description:
Register Title:
Register Address:
ANALOG SLOW_TRIP
ANALOG FAST_TRIP
UV/OV CRITICAL
______________________________________________________________________________________
EN1_BIT
EN2_BIT
prot[1]
bit 7
ON_
PROT
R
prot[0]
bit 6
R
Channel grouping (three-state MODE input), fault-detection behavior (three-state PROT input), and
ON_ inputs status register
status1
0x60
mode[1]
bit 5
R
mode[0]
bit 4
R
S
S
R
R
Q
Q
Q
Q
ON4
bit 3
and ground, with the midpoint connected to ON_. The
turn-on threshold voltage for the channel is then:
The maximum rating for the ON_ pin is 6V; do not
exceed this value.
R
ON3
bit 2
R
V
FORCE-ON
EN
BIT
= 0.6V x (R1 + R2)/R2
RETRY PIN
ON2
bit 1
200ms DELAY,
R
THEN PULSE
CHANNEL
ENABLED
ON1
bit 0
R
VALUE
RESET
—