LT8610A/LT8610AB Series
4
8610abfa
For more information www.linear.com/LT8610A
The l denotes the specifications which apply over the full operating
temperature range, otherwise specifications are at T
A
= 25°C.
ELECTRICAL CHARACTERISTICS
PARAMETER CONDITIONS MIN TYP MAX UNITS
Oscillator Frequency R
T
= 221k, I
LOAD
= 1A
R
T
= 60.4k, I
LOAD
= 1A
R
T
= 18.2k, I
LOAD
= 1A
l
l
l
180
665
1.85
210
700
2.00
240
735
2.15
kHz
kHz
MHz
Top Power NMOS On-Resistance
I
SW
= 1A 120 mΩ
Top Power NMOS Current Limit LT8610A
LT8610AB
l
l
5
5
6.7
6.7
8
8
A
A
Bottom Power NMOS On-Resistance
V
INTVCC
= 3.4V, I
SW
= 1A 65 mΩ
Bottom Power NMOS Current Limit V
INTVCC
= 3.4V 3.4 4.3 5.4 A
SW Leakage Current V
IN
= 42V, V
SW
= 0V, 42V –1.5 1.5 µA
EN/UV Pin Threshold EN/UV Rising
l
0.94 1.0 1.06 V
EN/UV Pin Hysteresis 40 mV
EN/UV Pin Current V
EN/UV
= 2V –20 20 nA
PG Upper Threshold Offset from V
FB
V
FB
Falling
l
6 9.0 12 %
PG Lower Threshold Offset from V
FB
V
FB
Rising
l
–12 –9.0 –6 %
PG Hysteresis 1.3 %
PG Leakage V
PG
= 3.3V –40 40 nA
PG Pull-Down Resistance V
PG
= 0.1V
l
680 2000 Ω
SYNC Threshold SYNC Falling
SYNC Rising
0.8
1.6
1.1
2.0
1.4
2.4
V
V
SYNC Pin Current V
SYNC
= 6V –40 40 nA
TR/SS Source Current
l
1.0 2.0 3.2 µA
TR/SS Pull-Down Resistance Fault Condition, TR/SS = 0.1V 230 Ω
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 LT8610AE/LT8610ABE 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 LT8610AI/LT8610ABI is guaranteed over the full –40°C to 125°C
operating junction temperature range. The LT8610AH is guaranteed
over the full –40°C to 150°C operating junction temperature range. High
junction temperatures degrade operating lifetimes. Operating lifetime is
derated at junction temperatures greater than 125°C.
Note 3: This IC includes overtemperature protection that is intended to
protect the device during overload conditions. Junction temperature will
exceed 150°C when overtemperature protection is active. Continuous
operation above the specified maximum operating junction temperature
will reduce lifetime.
Note 4: For fixed output voltage versions, minimum input voltage will be
limited by output voltage.
