EXPOSED PAD (PIN 17) IS GND, MUST BE SOLDERED TO PCB
FE PACKAGE
16-LEAD PLASTIC TSSOP
T
JMAX
= 150°C,
θ
JA
= 25°C/W TO 33°C/W*,
θ
JC
= 10°C/W
EXPOSED PAD (PIN 17) IS GND, MUST BE SOLDERED TO PCB
FRONT VIEW
7
6
5
4
3
2
1
TEMP
SHDN
IN
GND
OUT
SET
I
MON
/I
LIM
FRONT VIEW
7
6
5
4
3
2
1
T7 PACKAGE
7-LEAD PLASTIC TO-220
T
JMAX
= 125°C,
θ
JA
= 34°C/W,
θ
JC
= 3°C/W
TEMP
SHDN
IN
GND
OUT
SET
I
MON
/I
LIM
TAB
IS
GND
TAB
IS
GND
R PACKAGE
7-LEAD PLASTIC DD
T
JMAX
= 125°C,
θ
JA
= 15°C/W TO 19°C/W*,
θ
JC
= 3°C/W
*See Applications Information section.
3086fb
2
For more information
www.linear.com/LT3086
LT3086
orDer inForMaTion
LEAD FREE FINISH
LT3086EDHD#PBF
LT3086IDHD#PBF
LT3086EFE#PBF
LT3086IFE#PBF
LT3086MPFE#PBF
LT3086HFE#PBF
LT3086ER#PBF
LT3086IR#PBF
LT3086MPR#PBF
LT3086ET7#PBF
LT3086IT7#PBF
LT3086MPT7#PBF
TAPE AND REEL
LT3086EDHD#TRPBF
LT3086IDHD#TRPBF
LT3086EFE#TRPBF
LT3086IFE#TRPBF
LT3086MPFE#TRPBF
LT3086HFE#TRPBF
LT3086ER#TRPBF
LT3086IR#TRPBF
LT3086MPR#TRPBF
N/A
N/A
N/A
http://www.linear.com/product/LT3086#orderinfo
PART MARKING*
3086
3086
3086FE
3086FE
3086FE
3086FE
LT3086R
LT3086R
LT3086R
LT3086T7
LT3086T7
LT3086T7
PACKAGE DESCRIPTION
16-Lead (5mm × 4mm) Plastic DFN
16-Lead (5mm × 4mm) Plastic DFN
16-Lead Plastic TSSOP
16-Lead Plastic TSSOP
16-Lead Plastic TSSOP
16-Lead Plastic TSSOP
7-Lead Plastic DD-Pak
7-Lead Plastic DD-Pak
7-Lead Plastic DD-Pak
7-Lead Plastic TO-220
7-Lead Plastic TO-220
7-Lead Plastic TO-220
TEMPERATURE RANGE
–40°C to 125°C
–40°C to 125°C
–40°C to 125°C
–40°C to 125°C
–55°C to 125°C
–40°C to 150°C
–40°C to 125°C
–40°C to 125°C
–55°C to 125°C
–40°C to 125°C
–40°C to 125°C
–55°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.
The
l
denotes the specifications which apply over the full operating
temperature range, otherwise specifications are at T
A
= 25°C.
PARAMETER
Minimum Input Voltage (Note 4)
Reference Voltage
(Notes 3, 5)
Reference Current
Line Regulation
V
SET
I
SET
V
SET
V
SET
I
SET
V
SET
V
SET
I
SET
I
SET
CONDITIONS
I
LOAD
= 2.1A, ∆V
OUT
= –1%
V
IN
= 1.55V, I
LOAD
= 1mA
1.55V < V
IN
< 40V, 1mA < I
LOAD
< 2.1A
1.55V < V
IN
< 40V, 1mA < I
LOAD
< 2.1A
V
IN
= 1.55V, I
LOAD
= 1mA
1.55V < V
IN
< 40V, 1mA < I
LOAD
< 2.1A
V
IN
= 1.55V to 40V, I
LOAD
= 1mA
V
IN
= 1.55V to 40V, I
LOAD
= 1mA
V
IN
= 1.55V to 40V, I
LOAD
= 1mA
I
LOAD
= 1mA to 2.1A, V
IN
= V
OUT
+ 0.55V
I
LOAD
= 1mA to 2.1A, V
IN
= V
OUT
+ 0.55V
I
LOAD
= 1mA to 2.1A, V
IN
= V
OUT
+ 0.55V
I
LOAD
= 1mA to 2.1A, V
IN
= V
OUT
+ 0.55V
I
LOAD
= 1mA
I
LOAD
= 100mA
I
LOAD
= 500mA
I
LOAD
= 1.5A
I
LOAD
= 2.1A
(T
J
< 125°C)
(H-Grade, T
J
> 125°C)
(T
J
< 125°C)
(H-Grade, T
J
> 125°C)
(T
J
< 125°C)
(H-Grade, T
J
> 125°C)
(T
J
< 125°C)
(H-Grade, T
J
> 125°C)
l
l
elecTrical characTerisTics
MIN
396
392
388
49.5
49
TYP
1.4
400
400
400
50
50
0.1
MAX
1.55
404
408
408
50.5
51
0.8
1
1
1
0.08
0.08
1
65
100
135
160
195
235
335
425
415
540
UNITS
V
mV
mV
mV
µA
µA
mV
mV
µA
mV
mV
µA
µA
mA
mV
mV
mV
mV
mV
mV
mV
mV
mV
mV
l
l
l
l
–0.12
–8
–0.03
0.25
0.02
Load Regulation
(Notes 6, 7)
l
–0.16
l
Minimum Load Current (Note 16)
Dropout Voltage
V
IN
= V
OUT(NOMINAL)
, (Notes 7, 8)
10
l
100
l
150
l
260
l
330
l
3086fb
For more information
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3
LT3086
The
l
denotes the specifications which apply over the full operating
temperature range, otherwise specifications are at T
A
= 25°C.
PARAMETER
GND Pin Current
V
IN
= V
OUT(NOMINAL)
+ 0.55V, (Notes 7,
9)
CONDITIONS
I
LOAD
= 0µA
I
LOAD
= 1mA
I
LOAD
= 100mA
I
LOAD
= 500mA
I
LOAD
= 1.5A
I
LOAD
= 2.1A
V
IN
= 40V, V
SHDN
= 0V
C
SET
= 0.01µF , C
OUT
= 10µF, I
LOAD
= 2.1A
V
OUT
= 5V, BW = 10Hz to 100kHz
V
OUT
= Off to On
V
OUT
= On to Off
V
SHDN
= 0V
V
SHDN
= 40V
T
J
= 25°C
T
J
= 125°C
0°C < T
J
< 125°C, I
TEMP
= 0
0°C < T
J
< 125°C, I
TEMP
= 0µA to 80µA
25°C < T
J
< 125°C
I
LOAD
= 20mA, R
MON
= 1kΩ
I
LOAD
= 500mA, R
MON
= 330Ω
I
LOAD
= 1A, R
MON
= 330Ω
I
LOAD
= 1.5A, R
MON
= 330Ω
I
LOAD
= 2.1A, R
MON
= 330Ω
R
MON
= 330Ω, I
OUT(MASTER)
= 2.1A
V
TRACK
= 750mV
1.55V < V
IN
< 40V
1.55V < V
IN
< 40V
1.55V < V
IN
< 40V
1.55V < V
IN
< 40V
I
PWRGD
= 200µA (Fault Condition)
V
OL
TO V
OH
(Rising Edge)
V
PWGRD
= 32V, V
RPWGRD
= 500mV
1.55V < V
IN
< 40V, I
MON
= 0V
1.55V < V
IN
< 40V, 0 < I
CDC
< 20µA, V
IMON
= 800mV to 0
V
IN
= 1.9V (AVG), V
RIPPLE
= 0.5V
P-P
, V
OUT
= 1V
f
RIPPLE
= 120Hz, I
LOAD
= 2.1A
V
IN
= 1.55V
V
IN
= V
OUT(NOMINAL)
+ 0.55V (Notes 7, 12), ∆V
OUT
= –5%
1.55V < V
IN
< 40V
V
IN
= –40V, V
OUT
= 0
V
OUT
= 32V, V
IN
= 0, V
SHDN
= 0
l
l
l
l
l
l
l
l
l
l
l
l
l
l
l
l
l
l
l
l
l
l
l
l
l
l
l
elecTrical characTerisTics
MIN
TYP
1.2
1.3
1.8
4.5
23
44
0.1
40
MAX
2.4
2.6
3.6
9
46
88
1
UNITS
mA
mA
mA
mA
mA
mA
µA
µV
RMS
Quiescent Current in Shutdown
Output Voltage Noise
Shutdown Threshold
SHDN
Pin Current (Note 10)
1.55V < V
IN
< 40V
TEMP Voltage (Note 13)
TEMP Error (Note 13)
I
TEMP
Thermal Limit Current Threshold
I
MON
Output Current
V
IN
= V
OUT(NOMINAL)
+ 0.55V (Note 15)
1.12
0.85
1.22
1.03
15
0.25
1.25
1.32
1
35
V
V
µA
µA
V
V
–0.09
–0.1
95
5
440
0.95
1.43
2.02
–10
7
390
48.75
100
20
500
1.00
1.50
2.10
0
15
400
50
2.4
300
55
8
390
0.320
65
2.2
2.2
775
17
400
0.333
80
2.4
800
1
0.09
105
75
560
1.05
1.57
2.18
10
25
410
51.25
V
V
µA
µA
µA
mA
mA
mA
%
µA
mV
µA
mV
nA
Output Current Sharing Error (Note 14)
TRACK Pin Pull-Up Current
R
PWRGD
Reference Voltage
R
PWRGD
Reference Current
R
PWRGD
Reference Voltage Hysteresis
R
PWRGD
Reference Current Hysteresis
PWRGD V
OL
PWRGD Internal Time Delay
PWRGD Pin Leakage Current
CDC Reference Voltage
CDC/V
IMON
Voltage Gain
Ripple Rejection
Internal Current Limit
I
LIM
Threshold Voltage
Input Reverse-Leakage Current
Reverse-Output Current (Note 11)
200
25
1
410
0.343
mV
µs
µA
mV
V/V
dB
2.9
825
2
10
A
A
mV
mA
µA
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:
Absolute maximum input-to-output differential voltage is not
achievable with all combinations of rated IN pin and OUT pin voltages.
With the IN pin at 45V, the OUT pin may not be pulled below 0V. The total
IN to OUT differential voltage must not exceed ±45V.
Note 3:
The LT3086 is tested and specified under pulse load conditions
such that T
J
≅
T
A
. The LT3086E is 100% production tested at T
A
= 25°C
and performance is guaranteed from 0°C to 125°C. Specifications over
the –40°C to 125°C operating junction temperature range are assured by
design, characterization and correlation with statistical process controls.
The LT3086I is guaranteed over the full –40°C to 125°C operating junction
temperature range. The LT3086MP is 100% tested over the –55°C to
125°C operating junction temperature range. The LT3086H is 100% tested
3086fb
4
For more information
www.linear.com/LT3086
LT3086
elecTrical characTerisTics
at the 150°C operating junction temperature. High junction temperatures
degrade operating lifetimes. Operating lifetime is derated at junction
temperatures greater than 125°C.
Note 4:
The LT3086 is tested and specified for these conditions with the
SET pin connected to the OUT pin, V
OUT
= 0.4V.
Note 5:
Maximum junction temperature limits operating conditions. The
regulated output voltage specification does not apply for all possible
combinations of input voltage and output current. Limit the output current
range if operating at large input-to-output voltage differentials. Limit
the input-to-output voltage differential if operating at maximum output
current. Current limit foldback limits the maximum output current as a
function of input-to-output voltage. See Current Limit vs V
IN
– V
OUT
in the
Typical Performance Characteristics section.
Note 6:
Load regulation is Kelvin-sensed at the package.
Note 7:
To satisfy minimum input voltage requirements, the LT3086 is
tested and specified for these conditions with a 32k resistor between OUT
and SET for a 2V output voltage.
Note 8:
Dropout voltage is the minimum input-to-output voltage
differential needed to maintain regulation at a specified output current.
In dropout, the output voltage equals: (V
IN
– V
DROPOUT
). For low output
voltages and certain load conditions, minimum input voltage requirements
limit dropout voltage. See the Minimum Input Voltage curve in the Typical
Performance Characteristics section.
Note 9:
GND pin current is tested with V
IN
= V
OUT(NOMINAL)
+ 0.55V and
PWRGD pin floating. GND pin current increases in dropout. See GND pin
current curves in the Typical Performance Characteristics section.
Note 10:
SHDN
pin current flows into the
SHDN
pin.
Note 11:
Reverse-output current is tested with the IN pin grounded and
the OUT pin forced to a voltage. The current flows into the OUT pin and out
of the GND pin.
Note 12:
The IC includes overtemperature protection circuitry that protects
the device during momentary overload conditions. Junction temperature
exceeds 125°C (LT3086E, LT3086I, LT3086MP) or 150°C (LT3086H)
when the overtemperature circuitry is active unless thermal limit is
externally set by loading the TEMP pin. Continuous operation above the
specified maximum junction temperature may impair device reliability.
Note 13:
The TEMP output voltage represents the average die temperature
next to the power transistor while the center of the transistor can be
significantly hotter during high power conditions. Due to power dissipation
and temperature gradients across the die, the TEMP output voltage
measurement does not guarantee that absolute maximum junction
temperature is not exceeded.
Note 14:
Output current sharing error is the difference in output currents
of a slave relative to its master when two LT3086 regulators are paralleled.
The device is tested as a slave with V
TRACK
= 0.693V, R
MON
= 330Ω
and V
SET
= 0.4V, conditions when an ideal master is outputting 2.1A.
The specification limits account for the slave output tracking error from
2.1A and the worst-case error that can be contributed by a master: the
maximum deviation of V
SET
from 0.4V and I
MON
from 2.1mA.
Note 15:
The LT3086 is tested and specified for these conditions with the
I
MON
and I
LIM
pins tied together.
Note 16:
The LT3086 requires a minimum load current to ensure proper
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