Automotive 1.5-V to 5.5-V, 1.5-A, 0.5-µA IQ ideal diode with integrated FET
The LM66100-Q1 is a Single-Input, Single-Output
(SISO) integrated ideal diode that is well suited for
a variety of applications. The device contains a Pchannel MOSFET that can operate over an input
voltage range of 1.5 V to 5.5 V and can support a
maximum continuous current of 1.5 A.
The chip enable works by comparing the CE pin
voltage to the input voltage. When the CE pin voltage
is higher than VIN, the device disables and the
MOSFET is off. When the CE pin voltage is lower,
the MOSFET is on. The LM66100-Q1 also comes
with reverse polarity protection (RPP) that can protect
the device from a miswired input, such as a reversed
battery.
Two LM66100-Q1 devices can be used in an
ORing configuration similar to a dual diode ORing
implementation. In this configuration, the devices pass
the highest input voltage to the output while blocking
reverse current flow into the input supplies. These
devices can compare input and output voltages to
make sure that reverse current is blocked through an
internal voltage comparator.
The LM66100-Q1 is available in a standard SC-70
package characterized for operation over a junction
temperature range of –40°C to 150°C.
1 Features
• AEC-Q100 qualified for automotive applications:
– Device temperature grade 1: –40°C to 125°C
ambient operating temperature range
• Wide operating voltage range: 1.5 V–5.5 V
• Reverse voltage standoff on VIN:
–6-V absolute maximum
• Maximum continuous current (IMAX): 1.5 A
• On-Resistance (RON):
– 5-V VIN = 79 mΩ (typical)
– 3.6-V VIN = 91 mΩ (typical)
– 1.8-V VIN = 141 mΩ (typical)
• Comparator chip enable (CE)
• Channel status indication (ST)
• Low current consumption:
– 3.6-V VIN shutdown current (ISD,VIN): 120 nA
(typical)
– 3.6-V VIN quiescent current (IQ, VIN): 150 nA
(typical)
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