Datasheet

LT8616
4
8616fa
For more information www.linear.com/LT8616
PARAMETER CONDITIONS MIN TYP MAX UNITS
Channel 2
Minimum V
IN1
Voltage to Use
Channel2
l
3.0 3.4 V
Supply Current in Regulation V
IN
= 6V, V
OUT2
= 3.3V, Load2 = 100µA
V
IN
= 6V, V
OUT2
= 3.3V Load2 = 1mA
80
620
110
910
µA
µA
SW2 Minimum On-Time Load = 0.25A, Pulse-Skipping Mode
l
20 35 55 ns
SW2 Top NMOS On-Resistance 145 mΩ
SW2 Peak Current Limit (Note 3)
l
4.5 5.5 6.5 A
SW2 Bottom NMOS On-Resistance 120 mΩ
SW2 Valley Current Limit
l
2.5 3.5 4.5 A
SW2 Leakage Current V
IN2
= 42V, V
SW2
= 0V, 42V –2 2 µA
ELECTRICAL CHARACTERISTICS
The l denotes the specifications which apply over the full operating
temperature range, otherwise specifications are at T
A
= 25°C.
Note 1: Stresses beyond those listed under Absolute Maximum Ratings
may cause permanent damage to the device. Exposure to any Absolute
Maximum Rating condition for extended periods may affect device
reliability and lifetime.
Note 2: The LT8616E is guaranteed to meet performance specifications
from 0°C to 125°C junction temperature. Specifications over the –40°C
to 125°C operating junction temperature range are assured by design,
characterization and correlation with statistical process controls. The
LT8616I is guaranteed over the full –40°C to 125°C operating junction
temperature range. The LT8616H is guaranteed over the full –40°C to
150°C operating junction temperature range.
Note 3:
Current limit guaranteed by design and/or correlation to static test.
Slope compensation reduces current limit at higher duty cycle.
Note 4: This IC includes overtemperature protection that is intended
to protect the device during momentary overload conditions. Junction
temperature will exceed the maximum operating junction temperature
when overtemperature protection is active. Continuous operation above
the specified maximum operating junction temperature may impair device
reliability. See High Temperature Considerations section.
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