LT3686 LINER [Linear Technology], LT3686 Datasheet - Page 3

• Manufacturer Part Number: LT3686
• Manufacturer: LINER [Linear Technology]

electricAl chArActeristics
temperature range, otherwise specifications are at T
PARAMETER
Quiescent Current at Shutdown
Quiescent Current
Internal Undervoltage Lockout
Overvoltage Lockout
Feedback Voltage
Reference Voltage Line Regulation
FB Pin Bias Current
Switching Frequency
Minimum On Time
Minimum Off Time
Switch V
Switch Current Limit
Switch Active Current
BOOST Pin Current
Minimum Boost Voltage Above Switch
Max BD Pin Active Load Current
BD Pin Active Load Disable Threshold
DA Pin Current to Stop OSC
MODE High
MODE Low
MODE Pin Bias Current
SS Threshold
SS Source Current
EN/UVLO Bias Current
EN/UVLO Threshold
EN/UVLO Hysteresis
Boost Diode Forward Drop
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 LT3686E 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
LT3686I is guaranteed over the full –40°C to 125°C operating junction
temperature range.
CESAT
CONDITIONS
V
V
Not Switching, MODE ≤ 0.4V
Not Switching, MODE ≥ 0.8V
V
I
R
R
R
I
(Note 3)
SW = 10V (Note 4)
SW = 0V (Note 5)
I
I
V
V
V
I
DA
SW
SW
SW
BD
EN/UVLO
EN/UVLO
IN
SS
EN/UVLO
EN/UVLO
T
T
T
= 15.4kΩ
= 100kΩ
= 267kΩ
< 1.2A
to I
= 3.6V ↔ 37V
= 1.2A
= 1.2A
= 1.2A
= 1V
A
= 25°C. V
BOOST
< 0.4V
= 1V
= 10V
= 0V
The
= 200mA
l
IN
denotes the specifications which apply over the full operating
= 10V, V
Note 3: Current limit guaranteed by design and/or correlation to static test.
Slope compensation reduces current limit at higher duty cycle.
Note 4: Current flows into pin.
Note 5: Current flows out of pin.
Note 6: 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.
EN/UVLO
≥ 1.32V.
l
l
l
l
l
l
l
l
0.790
0.785
1.85
1.22
MIN
0.3
1.9
1.9
5.2
1.2
0.8
1.3
1.8
37
30
0.0012
1.27
0.85
TYP
670
300
100
150
680
400
0.1
1.1
1.2
3.4
0.8
0.8
2.1
2.3
2.3
2.2
6.5
1.7
0.9
2.4
10
38
20
20
20
40
2
LT3686
0.810
0.815
MAX
2.65
1.32
100
110
200
600
1.3
1.4
3.6
2.5
2.3
2.6
2.4
0.4
0.1
2.7
15
39
30
40
1
1
3
UNITS
3686fa

MHz
MHz
%/V
kHz
kHz
mA
mA
mV
mA
mA
µA
µA
nA
µA
µA
µA
µA
µA
µA
µA
ns
ns
V
V
V
V
A
A
V
V
A
V
V
V
V
V