MAX15068 Datasheet, PDF (9/17 Pages) Maxim Integrated Products – Dual ORing, Single Hot-Swap Controller

MAX15068
Pin Configuration
Dual ORing, Single Hot-Swap Controller with
Accurate Current Monitoring
TOP VIEW
20 19 18 17
+
CSN 1
CSP 2
IN1 3
VS 4
GND 5
IN2 6
MAX15068
16 CB
15 ON
14 EN
13 CDLY
12 PC
11 FAULT
EP
7
8
9 10
Pin Description
PIN
NAME
1
CSN
2
CSP
3
IN1
4
V_S
5
GND
6
IN2
7
OG2
8
CP2
9
IPMON
TQFN
(4mm × 5mm)
FUNCTION
Input Current Sense Negative Input
Input Current Sense Positive Input
Positive Supply 1 Input and MOSFET Gate Drive Return
Internal Regulator Output. Bypass V_S to GND with a 1μF capacitor.
Ground
Positive Supply 2 Input and MOSFET Gate Drive Return
ORing MOSFET 2 Gate Control Output. Connect this pin to the gate of an external n-channel MOSFET
for ideal diode control. The gate voltage is limited to approximately 11V above and a diode voltage
below IN2. During fast turn-on, a 1A pullup switch charges OG2 from CP2. During fast turn-off, a 3A
pulldown switch discharges OG2 to IN2.
Charge Pump 2 Output. Connect a capacitor from CP2 to IN2 pin. The value of this capacitor should
be approximately 10x the gate capacitance (CISS) of the external MOSFET for ORing diode control.
The charge stored on this capacitor is used to pull up the gate during a fast turn-on.
Analog Current Monitor Output Signal. Connect a resistor from IPMON to GND to set the monitor gain.
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