EXPOSED PAD (PIN 11) IS GND, MUST BE SOLDERED TO PCB
MSE PACKAGE
10-LEAD PLASTIC MSOP
T
JMAX
= 125°C,
θ
JA
= 45°C/W,
θ
JC
= 10°C/W
EXPOSED PAD (PIN 11) IS GND, MUST BE SOLDERED TO PCB
ORDER INFORMATION
LEAD FREE FINISH
LT3684EDD#PBF
LT3684IDD#PBF
LT3684EMSE#PBF
LT3684IMSE#PBF
TAPE AND REEL
LT3684EDD#TRPBF
LT3684IDD#TRPBF
LT3684EMSE#TRPBF
LT3684IMSE#TRPBF
http://www.linear.com/product/LT3684#orderinfo
PART MARKING*
LCVT
LCVT
LTCVS
LTCVS
PACKAGE DESCRIPTION
10-Lead (3mm
×
3mm) Plastic DFN
10-Lead (3mm
×
3mm) Plastic DFN
10-Lead Plastic MSOP
10-Lead Plastic MSOP
TEMPERATURE RANGE
–40°C to 85°C
–40°C to 125°C
–40°C to 85°C
–40°C to 125°C
Consult LTC Marketing for parts specified with wider operating temperature ranges. *The temperature grade is identified by a label on the shipping container.
For more information on lead free part marking, go to:
http://www.linear.com/leadfree/
For more information on tape and reel specifications, go to:
http://www.linear.com/tapeandreel/.
Some packages are available in 500 unit reels through
designated sales channels with #TRMPBF suffix.
2
3684fa
For more information
www.linear.com/LT3684
LT3684
ELECTRICAL CHARACTERISTICS
PARAMETER
Minimum Input Voltage
Quiescent Current from V
IN
V
RUN/SS
= 0.2V
V
BIAS
= 3V, Not Switching
V
BIAS
= 0, Not Switching
Quiescent Current from BIAS
V
RUN/SS
= 0.2V
V
BIAS
= 3V, Not Switching
V
BIAS
= 0, Not Switching
Minimum Bias Voltage
Feedback Voltage
l
l
l
The
l
denotes the specifications which apply over the full operating
temperature range, otherwise specifications are at T
A
= 25°C. V
IN
= 10V, V
RUNS/SS
= 10V V
BOOST
= 15V, V
BIAS
= 3.3V unless otherwise
noted. (Note 2)
CONDITIONS
l
MIN
TYP
3
0.01
0.4
1.2
0.01
0.85
0
2.7
MAX
3.6
0.5
0.8
2.0
0.5
1.5
0.1
3
1.28
1.29
100
0.02
UNITS
V
µA
mA
mA
µA
mA
mA
V
V
V
nA
%/V
µMho
µA
µA
A/V
V
1.25
1.24
1.265
1.265
30
0.002
330
1000
75
100
3.5
2
FB Pin Bias Current (Note 3)
FB Voltage Line Regulation
Error Amp g
m
Error Amp Gain
V
C
Source Current
V
C
Sink Current
V
C
Pin to Switch Current Gain
V
C
Clamp Voltage
Switching Frequency
R
T
= 8.66k
R
T
= 29.4k
R
T
= 187k
4V < V
IN
< 34V
l
2.7
1.25
250
l
3.0
1.4
300
100
3.6
360
0.02
3.3
1.55
350
150
4.0
2
2.1
30
10
0.2
MHz
MHz
kHz
nS
A
mV
µA
V
mA
µA
V
V
mV
mV
Minimum Switch Off-Time
Switch Current Limit
Switch V
CESAT
Boost Schottky Reverse Leakage
Minimum Boost Voltage (Note 4)
BOOST Pin Current
RUN/SS Pin Current
RUN/SS Input Voltage High
RUN/SS Input Voltage Low
PG Threshold Offset from Feedback Voltage
PG Hysteresis
PG Leakage
PG Sink Current
V
PG
= 5V
V
PG
= 0.4V
V
FB
Rising
I
SW
= 1A
V
RUN/SS
= 2.5V
Duty Cycle = 5%
I
SW
= 2A
V
SW
= 10V, V
BIAS
= 0V
3.1
l
1.6
18
5
2.5
100
10
0.1
1
µA
µA
l
100
300
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 LT3684E is guaranteed to meet performance specifications
from 0°C to 85°C. Specifications over the –40°C to 85°C operating
temperature range are assured by design, characterization and correlation
with statistical process controls. The LT3684I specifications are
guaranteed over the –40°C to 125°C temperature range.
Note 3:
Bias current measured in regulation. Bias current flows into the FB
pin.
Note 4:
This is the minimum voltage across the boost capacitor needed to
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