BD Voltage (LT3695) .................................................30V
RT , V
C
Voltage ............................................................5V
RT Pin Current .........................................................1mA
SYNC Voltage ............................................................20V
FB Voltage (LT3695) ....................................................5V
OUT1, OUT2 Voltage (LT3695-3.3, LT3695-5) ...........16V
PG Voltage ................................................................30V
Operating Junction Temperature Range (Notes 4, 5)
LT3695E ............................................. –40°C to 125°C
LT3695I .............................................. –40°C to 125°C
LT3695H ............................................ –40°C to 150°C
Storage Temperature Range................... –65°C to 150°C
Lead Temperature (Soldering, 10 sec) .................. 300°C
PIN CONFIGURATION
LT3695
TOP VIEW
PGND
DA
NC
SW
RUN/SS
RT
SYNC
V
IN
1
2
3
4
5
6
7
8
16
15
14
13
12
11
10
9
BOOST
BD
GND
PG
NC
FB
NC
V
C
PGND
DA
NC
SW
RUN/SS
RT
SYNC
V
IN
1
2
3
4
5
6
7
8
LT3695-3.3, LT3695-5
TOP VIEW
16
15
14
13
12
11
10
9
BOOST
NC
OUT1
OUT2
GND
PG
NC
V
C
17
PGND
17
PGND
MSE PACKAGE
16-LEAD PLASTIC MSOP
θ
JA
= 40°C/W WITH EXPOSED PAD SOLDERED
θ
JA
= 110°C/W WITHOUT EXPOSED PAD SOLDERED
MSE PACKAGE
16-LEAD PLASTIC MSOP
θ
JA
= 40°C/W WITH EXPOSED PAD SOLDERED
θ
JA
= 110°C/W WITHOUT EXPOSED PAD SOLDERED
ORDER INFORMATION
LEAD FREE FINISH
LT3695EMSE#PBF
LT3695IMSE#PBF
LT3695HMSE#PBF
LT3695EMSE-3.3#PBF
LT3695IMSE-3.3#PBF
LT3695HMSE-3.3#PBF
LT3695EMSE-5#PBF
LT3695IMSE-5#PBF
LT3695HMSE-5#PBF
TAPE AND REEL
LT3695EMSE#TRPBF
LT3695IMSE#TRPBF
LT3695HMSE#TRPBF
LT3695EMSE-3.3#TRPBF
LT3695IMSE-3.3#TRPBF
LT3695EMSE-5#TRPBF
LT3695IMSE-5#TRPBF
LT3695HMSE-5#TRPBF
PART MARKING*
3695
3695
3695
369533
369533
36955
36955
36955
PACKAGE DESCRIPTION
16-Lead Plastic MSOP
16-Lead Plastic MSOP
16-Lead Plastic MSOP
16-Lead Plastic MSOP
16-Lead Plastic MSOP
16-Lead Plastic MSOP
16-Lead Plastic MSOP
16-Lead Plastic MSOP
16-Lead Plastic MSOP
TEMPERATURE RANGE
–40°C to 125°C
–40°C to 125°C
–40°C to 150°C
–40°C to 125°C
–40°C to 125°C
–40°C to 150°C
–40°C to 125°C
–40°C to 125°C
–40°C to 150°C
LT3695HMSE-3.3#TRPBF 369533
Consult LTC Marketing for parts specified with wider operating temperature ranges. *The temperature grade is identified by a label on the shipping container.
Consult LTC Marketing for information on non-standard lead based finish parts.
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/
3695fa
2
LT3695 Series
ELECTRICAL CHARACTERISTICS
PARAMETER
Minimum Operating Voltage (Note 6)
LT3695
CONDITIONS
V
BD
= 3.3V
V
BD
< 3V
V
OUT1,2
= 5V
V
RUN/SS
= 0.2V V
BD
= 3.3V
V
RUN/SS
= 10V, V
BD
= 3.3V, Not Switching
V
RUN/SS
= 10V, V
BD
= 0V, Not Switching
V
RUN/SS
= 10V, V
OUT1,2
= 5V, Not Switching
V
RUN/SS
= 0.2V, V
BD
= 3.3V
V
RUN/SS
= 10V, V
BD
= 3.3V, Not Switching
V
RUN/SS
= 10V, V
BD
= 0V, Not Switching
l
l
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
RUN/SS
= 10V, unless otherwise noted. (Note 4)
MIN
TYP
3.4
3.4
3.4
3.4
36
38
0.01
35
90
35
35
0.01
55
0
10
65
10
65
2.8
l
MAX
3.6
4.3
3.6
3.6
39.9
0.5
60
160
60
60
0.5
100
–5
15
112
15
112
3
808
815
–40
0.005
3.33
3.35
5.05
5.075
UNITS
V
V
V
V
V
μA
μA
μA
μA
μA
μA
μA
μA
μA
μA
μA
μA
V
mV
mV
nA
%/V
V
V
V
V
μS
V/V
μA
μA
A/V
LT3695-3.3 V
OUT1,2
= 3.3V
LT3695-5
V
IN
Overvoltage Lockout
Quiescent Current from V
IN
LT3695
l
l
l
LT3695-3.3 V
RUN/SS
= 10V, V
OUT1,2
= 3.3V, Not Switching
LT3695-5
Quiescent Current from BD Pin
LT3695
l
35
Quiescent Current from OUT1,2 Pins
LT3695-3.3 V
RUN/SS
= 0.2V
V
RUN/SS
= 10V, V
OUT1,2
= 3.3V, Not Switching
LT3695-5
Minimum BD Pin Voltage: LT3695
Feedback Voltage: LT3695
FB Pin Bias Current: LT3695
Reference Voltage Line Regulation
Output Voltage
LT3695-3.3
FB Pin Voltage = 800mV
3.6V < V
IN
< 36V
V
RUN/SS
= 0.2V
V
RUN/SS
= 10V, V
OUT1,2
= 5V, Not Switching
l
l
5
43
5
43
792
785
800
800
–5
0.001
l
l
3.27
3.25
4.95
4.925
3.3
3.3
5
5
430
1300
50
50
1.25
LT3695-5
l
Error Amp g
m
Error Amp Voltage Gain
V
C
Source Current
V
C
Sink Current
V
C
Pin to Switch Current Gain
V
C
Switching Threshold
V
C
Clamp Voltage
Switching Frequency
I
VC
= ±1.5μA
0.4
R
RT
= 8.06k
R
RT
= 29.4k
R
RT
= 158k
E- and I-Grades
H-Grade
SYNC = 0V
SYNC = 3.3V or Clocked
l
l
0.6
2
2.2
1.0
250
130
130
0.8
2.42
1.1
275
210
250
2
1.66
V
V
MHz
MHz
kHz
ns
ns
A
A
1.98
0.9
225
Minimum Switch Off-Time
Switch Current Limit (Note 7)
1.45
1.18
1.7
1.4
3695fa
3
LT3695 Series
ELECTRICAL CHARACTERISTICS
PARAMETER
Switch V
CESAT
DA Pin Current to Stop OSC
Switch Leakage Current
Boost Schottky Diode Voltage Drop
Minimum Boost Voltage (Note 8)
BOOST Pin Current
RUN/SS Pin Current
RUN/SS Input Voltage High
RUN/SS Input Voltage Low
PG Leakage Current
PG Sink Current
PG Threshold as % of V
FB
(LT3695) or
V
OUT
(LT3695-3.3, LT3695-5)
PG Threshold Hysteresis
LT3695
LT3695-5
SYNC Threshold Voltage
SYNC Input Frequency
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 the device
reliability and lifetime.
Note 2:
Positive currents flow into pins, negative currents flow out of pins.
Minimum and maximum values refer to absolute values.
Note 3:
Absolute maximum voltage at V
IN
and RUN/SS pins is 60V for
nonrepetitive 1 second transients, and 36V for continuous operation.
Note 4:
The LT3695E regulators are 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 LT3695I regulators are guaranteed over the full –40°C to
125°C operating junction temperature range. The LT3695H regulators are
guaranteed over the full –40°C to 150°C operating junction temperature
range.
Measured at FB Pin
Measured at OUT1,2, Pins
300
0.3
12
50
75
550
800
2.2
mV
mV
mV
mV
MHz
LT3695-3.3 Measured at OUT1,2, Pins
V
PG
= 5V
V
PG
= 0.4V
Measured at FB (LT3695) or OUT1,2 (LT3695-3.3, LT3695-5)
Pins (Pin Voltage Rising)
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
RUN/SS
= 10V, unless otherwise noted. (Note 4)
CONDITIONS
I
SW
= 1A
1.25
V
SW
= 0V, V
IN
= 36V
I
BSD
= 50mA
l
MIN
TYP
350
1.6
0.01
720
0.1
1.7
10.5
4.5
12
MAX
1.95
1
900
1
2.3
17.5
7.5
20
0.2
UNITS
mV
A
μA
mV
μA
V
mA
μA
μA
V
V
μA
μA
%
Boost Schottky Diode Reverse Leakage V
SW
= 10V, V
BD
= 0V
I
SW
= 0.5A
V
RUN/SS
= 2.5V
V
RUN/SS
= 10V
l
2.5
0.1
100
88
1000
90
92
1
Note 5:
These ICs include overtemperature protection that is intended
to protect the devices 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.
Note 6:
This is the voltage necessary to keep the internal bias circuitry in
regulation.
Note 7:
Current limit guaranteed by design and/or correlation to static test.
Slope compensation reduces current limit at higher duty cycles.
Note 8:
This is the minimum voltage across the boost capacitor needed to
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