max5978 Maxim Integrated Products, Inc., max5978 Datasheet - Page 10

• Manufacturer Part Number: max5978
• Description: 0 To 16v, Hot-swap Controller With 10-bit Current, Voltage Monitor, And 4 Led Drivers
• Manufacturer: Maxim Integrated Products, Inc.

0 to 16V, Hot-Swap Controller with 10-Bit
Current, Voltage Monitor, and 4 LED Drivers
10
23, 26, 27,
31, 32
PIN
15
16
17
18
19
20
21
22
24
25
28
29
30
—
FAULT
ALERT
NAME
HWEN
DGND
DREG
LED4
LED3
GND
SDA
POL
SCL
I.C.
ON
PG
EP
Polarity Select Input. Connect POL to DREG for an active-high power-good (PG) output, or con-
nect POL to GND for active-low PG output.
Logic Power-Supply Input. Connect to REG externally through a 10I resistor and bypass to
DGND with a 1FF ceramic capacitor.
Precision Turn-On Input
Active-Low Open-Drain Fault Output. FAULT asserts low if an overcurrent event occurs.
I
I
Open-Drain Alert Output. ALERT goes low during a fault to notify the system of an impending
failure.
Open-Drain Power-Good Output
Internally Connected. Connect to ground.
Hardware Enable Input. Connect to REG or DGND. State is read upon power-up as V
the UVLO threshold and sets enable register bits with this value. After UVLO, this input becomes
inactive until power is cycled.
Digital Ground. Connect all GND and DGND to AGND externally using a star connection.
LED Driver 4
LED Driver 3
Ground
Exposed Pad. EP is internally grounded. Connect EP to the ground plane using a star connection.
2
2
C Serial Data Input/Output
C Serial Clock Input
FUNCTION
Pin Description (continued)
IN
crosses