MAX5079EUD+ Maxim Integrated Products, MAX5079EUD+ Datasheet - Page 8

• Manufacturer Part Number: MAX5079EUD+
• Description: IC CNTRL ORING MOSFET 14TSSOP
• Manufacturer: Maxim Integrated Products

Specifications of MAX5079EUD+

• Applications: Base Station-Networking Line Cards, Servers
• Fet Type: N-Channel
• Number Of Outputs: 1
• Internal Switch(s): No
• Delay Time - On: 10µs
• Delay Time - Off: 70ns
• Voltage - Supply: 2.75 V ~ 13.2 V
• Current - Supply: 4mA
• Operating Temperature: -40°C ~ 85°C
• Mounting Type: Surface Mount
• Package / Case: 14-TSSOP
• Lead Free Status / RoHS Status: Lead free / RoHS Compliant

ORing MOSFET Controller with
Ultra-Fast 200ns Turn-Off
8
_______________________________________________________________________________________
PIN
10
11
12
13
14
1
2
3
4
5
6
7
8
9
PGOOD
NAME
AUXIN
PGND
UVLO
GATE
GND
CXN
CXP
OVP
BUS
STH
FTH
OVI
IN
Negative Terminal of External Flying Charge-Pump Capacitor
Positive Terminal of External Flying Charge-Pump Capacitor
Open-Drain Active-Low Output. OVP sinks up to 10mA when V
used to drive an optodiode. Cycle power or pull UVLO low and then high to reset OVP.
Open-Drain Active-Low Output. PGOOD pulls low when V
ORing MOSFET Slow-Comparator Reverse Voltage Threshold and Blanking Time Setting Input. Connect
a resistor from STH to GND to set the threshold. Connect a capacitor from STH to GND to set the
blanking time. Leave STH floating to set the internal threshold (-12mV) and internal blanking time
(0.9ms).
Fast-Comparator Reverse Threshold Setting. Connect a resistor from FTH to GND to set the fast-
comparator reverse voltage threshold from -24mV to -400mV.
Overvoltage Comparator Input. Connect OVI to BUS through a resistive divider.
Undervoltage Lockout Comparator Input. Connect UVLO to IN through a resistive divider. The MAX5079
remains off until V
Power Ground. Ground discharge path of the 2A GATE pulldown. Connect to external power ground
plane.
Gate-Driver Output for n-Channel ORing MOSFET
Bus Voltage-Sense Input. Connect BUS to the drain of the ORing MOSFET to sense the polarity of the
Bus Current. The MAX5079 receives its power from BUS when V
Signal Ground. Connect to the low-level signal or analog ground.
Source Connection for ORing MOSFET and Supply Input for the MAX5079. Connect IN directly to the
power-supply voltage of 2.75V to 13.2V or 1V to 13.2V with V
Auxiliary Power-Supply Input. AUXIN supplies power to the IC when 1V ≤ V
2.75V or higher if V
UVLO
IN
is less than 2.75V.
rises above 0.66V. When V
FUNCTION
UVLO
rises above 0.664V, V
UVLO
AUXIN
OVI
≤ 0.6V or V
IN
≥ 0.6V and V
and V
≥ 2.75V.
AUXIN
OVI
IN
Pin Description
≤ 2.75V. Connect AUXIN to
≥ 0.6V.
GATE
IN
are not present.
≥ V
is raised to V
BUS
. OVP can be
IN
.