LT3690 LINER [Linear Technology], LT3690 Datasheet - Page 3

• Manufacturer Part Number: LT3690
• Description: 42V, 2.5A Synchronous Step-Down Regulator
• Manufacturer: LINER [Linear Technology]

ELECTRICAL CHARACTERISTICS
temperature range, otherwise specifications are at T
PARAMETER
Oscillator Frequency
Top Power NMOS On-Resistance
Top Power NMOS Current Limit
Bottom Power NMOS On-Resistance
Bottom Power NMOS Current Limit
SW Leakage Current
EN/UV Pin Threshold
EN/UV Pin Hysteresis
EN/UV Pin Current
PG Upper Threshold Offset from V
PG Lower Threshold Offset from V
PG Hysteresis
PG Leakage
PG Pull-Down Resistance
SYNC Threshold
SYNC Pin Current
TR/SS Source Current
TR/SS Pull-Down Resistance
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 LT8610E 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
LT8610I is guaranteed over the full –40°C to 125°C operating junction
temperature range. High junction temperatures degrade operating
lifetimes. Operating lifetime is derated at junction temperatures greater
than 125°C.
FB
FB
CONDITIONS
R
R
R
I
V
V
V
EN/UV Rising
V
V
V
V
V
SYNC Falling
SYNC Rising
V
Fault Condition, TR/SS = 0.1V
SW
INTVCC
INTVCC
IN
EN/UV
FB
FB
PG
PG
SYNC
T
T
T
= 221k, I
= 60.4k, I
= 18.2k, I
= 42V, V
Falling
Rising
= 1A
= 3.3V
= 0.1V
= 2V
= 2V
= 3.4V, I
= 3.4V
LOAD
LOAD
LOAD
SW
= 0V, 42V
SW
= 1A
A
= 1A
= 1A
= 25°C.
= 1A
The
l
denotes the specifications which apply over the full operating
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.
l
l
l
l
l
l
l
l
l
1.85
–1.5
0.94
MIN
180
665
–20
–40
–40
3.5
2.5
0.8
1.6
1.2
–6
6
2.00
–9.0
TYP
210
700
120
680
230
4.8
3.3
1.0
9.0
1.3
1.1
2.0
2.2
65
40
MAX
2000
2.15
1.06
240
735
–12
5.8
4.8
1.5
1.4
2.4
3.2
20
12
40
40
LT8610
UNITS
3
8610p
MHz
mΩ
mΩ
kHz
kHz
mV
μA
nA
nA
nA
μA
%
%
%
Ω
Ω
A
A
V
V
V