Voltage ................................................. –0.3V to 17V
RUN Voltage............................................... –0.3V to 17V
MODE/SYNC, FB Voltages............................ –0.3V to 6V
INTV
CC
, PGOOD Voltages ............................ –0.3V to 6V
(Note 1)
Operating Junction Temperature Range
(Notes 2, 5) ............................................ –40°C to 150°C
Storage Temperature Range .................. –65°C to 150°C
pin conFiguraTion
TOP VIEW
SW
V
IN
RUN
PGOOD
1
2
3
4
9
GND
8 GND
7 MODE/SYNC
6 INTV
CC
5 FB
SW
SW
V
IN
V
IN
RUN
PGOOD
1
2
3
4
5
6
TOP VIEW
12
11
10
9
8
7
GND
GND
MODE/SYNC
INTV
CC
FB
NC
13
GND
DD PACKAGE
8-LEAD (3mm
×
3mm) PLASTIC DFN
T
JMAX
= 125°C,
θ
JA
= 43°C/W,
θ
JC
= 5.5°C/W
EXPOSED PAD (PIN 9) IS GND, MUST BE SOLDERED TO PCB
MSE PACKAGE
12-LEAD PLASTIC MSOP
T
JMAX
= 150°C,
θ
JA
= 40°C/W,
θ
JC
= 10°C/W
EXPOSED PAD (PIN 13) IS GND, MUST BE SOLDERED TO PCB FOR
OPTIMAL THERMAL PERFORMANCE
orDer inForMaTion
LEAD FREE FINISH
LTC3624EDD#PBF
LTC3624IDD#PBF
LTC3624EMSE#PBF
LTC3624IMSE#PBF
LTC3624HMSE#PBF
LTC3624EDD-3.3#PBF
LTC3624IDD-3.3#PBF
LTC3624EMSE-3.3#PBF
LTC3624IMSE-3.3#PBF
LTC3624HMSE-3.3#PBF
LTC3624EDD-5#PBF
LTC3624IDD-5#PBF
LTC3624EMSE-5#PBF
LTC3624IMSE-5#PBF
LTC3624HMSE-5#PBF
LTC3624EDD-2#PBF
LTC3624IDD-2#PBF
LTC3624EMSE-2#PBF
LTC3624IMSE-2#PBF
TAPE AND REEL
LTC3624EDD#TRPBF
LTC3624IDD#TRPBF
LTC3624EMSE#TRPBF
LTC3624IMSE#TRPBF
LTC3624HMSE#TRPBF
http://www.linear.com/product/LTC3624#orderinfo
PART MARKING*
LGJF
LGJF
3624
3624
3624
LGRG
LGRG
362433
362433
362433
LGRD
LGRD
36245
36245
36245
LGMN
LGMN
36242
36242
PACKAGE DESCRIPTION
8-Lead (3mm
×
3mm) Plastic DFN
8-Lead (3mm
×
3mm) Plastic DFN
12-Lead Plastic MSOP
12-Lead Plastic MSOP
12-Lead Plastic MSOP
8-Lead (3mm
×
3mm) Plastic DFN
8-Lead (3mm
×
3mm) Plastic DFN
12-Lead Plastic MSOP
12-Lead Plastic MSOP
12-Lead Plastic MSOP
8-Lead (3mm
×
3mm) Plastic DFN
8-Lead (3mm
×
3mm) Plastic DFN
12-Lead Plastic MSOP
12-Lead Plastic MSOP
12-Lead Plastic MSOP
8-Lead (3mm
×
3mm) Plastic DFN
8-Lead (3mm
×
3mm) Plastic DFN
12-Lead Plastic MSOP
12-Lead Plastic MSOP
TEMPERATURE RANGE
–40°C to 125°C
–40°C to 125°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 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 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 125°C
–40°C to 125°C
36242fd
LTC3624EDD-3.3#TRPBF
LTC3624IDD-3.3#TRPBF
LTC3624EMSE-3.3#TRPBF
LTC3624IMSE-3.3#TRPBF
LTC3624HMSE-3.3#TRPBF
LTC3624EDD-5#TRPBF
LTC3624IDD-5#TRPBF
LTC3624EMSE-5#TRPBF
LTC3624IMSE-5#TRPBF
LTC3624HMSE-5#TRPBF
LTC3624EDD-2#TRPBF
LTC3624IDD-2#TRPBF
LTC3624EMSE-2#TRPBF
LTC3624IMSE-2#TRPBF
2
For more information
www.linear.com/LTC3624
LTC3624/LTC3624-2
orDer inForMaTion
LEAD FREE FINISH
LTC3624HMSE-2#PBF
LTC3624EDD-23.3#PBF
LTC3624IDD-23.3#PBF
LTC3624EMSE-23.3#PBF
LTC3624IMSE-23.3#PBF
LTC3624HMSE-23.3#PBF
LTC3624EDD-25#PBF
LTC3624IDD-25#PBF
LTC3624EMSE-25#PBF
LTC3624IMSE-25#PBF
LTC3624HMSE-25#PBF
TAPE AND REEL
LTC3624HMSE-2#TRPBF
LTC3624EDD-23.3#TRPBF
LTC3624IDD-23.3#TRPBF
LTC3624EMSE-23.3#TRPBF
LTC3624IMSE-23.3#TRPBF
LTC3624HMSE-23.3#TRPBF
LTC3624EDD-25#TRPBF
LTC3624IDD-25#TRPBF
LTC3624EMSE-25#TRPBF
LTC3624IMSE-25#TRPBF
LTC3624HMSE-25#TRPBF
http://www.linear.com/product/LTC3624#orderinfo
PART MARKING*
36242
LGRH
LGRH
362423
362423
362423
LGRF
LGRF
362425
362425
362425
PACKAGE DESCRIPTION
12-Lead Plastic MSOP
8-Lead (3mm
×
3mm) Plastic DFN
8-Lead (3mm
×
3mm) Plastic DFN
12-Lead Plastic MSOP
12-Lead Plastic MSOP
12-Lead Plastic MSOP
8-Lead (3mm
×
3mm) Plastic DFN
8-Lead (3mm
×
3mm) Plastic DFN
12-Lead Plastic MSOP
12-Lead Plastic MSOP
12-Lead Plastic MSOP
TEMPERATURE RANGE
–40°C to 150°C
–40°C to 125°C
–40°C to 125°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 125°C
–40°C to 125°C
–40°C to 150°C
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/.
Some packages are available in 500 unit reels through
designated sales channels with #TRMPBF suffix.
The
l
denotes the specifications which apply over the specified operating
junction temperature range, otherwise specifications are at T
J
= 25°C. (Note 2) V
IN
= 12V, unless otherwise noted.
SYMBOL
V
IN
V
OUT
I
VIN
V
FB
V
OUT
PARAMETER
Operating Voltage
Output Voltage Range
Input Quiescent Current
Shutdown Mode, V
RUN
= 0V
Burst Mode Operation
Forced Continuous Mode (Note 3)
(Note 4)
l
elecTrical characTerisTics
CONDITIONS
MIN
2.7
0.6
TYP
MAX
17
V
IN
UNITS
V
V
µA
µA
mA
V
V
V
V
V
V
%/V
%
µA
µA
mΩ
mΩ
%
ns
0.1
3.5
1.8
0.594
0.591
3.267
3.250
4.950
4.925
0.6
0.6
3.3
3.3
5.0
5.0
0.01
0.1
0.1
0.1
115
1.0
7
0.606
0.609
3.333
3.350
5.050
5.075
0.015
1
1
Regulated Feedback Voltage
Regulated Fixed Output Voltage
LTC3624-3.3/LTC3624-23.3 (Note 4)
l
LTC3624-5/LTC3624-25 (Note 4)
l
ΔV
LINE(REG)
ΔV
LOAD(REG)
I
LSW
R
DS(ON)
D
MAX
t
ON(MIN)
V
RUN
I
RUN
Reference Voltage Line Regulation
Output Voltage Load Regulation
NMOS Switch Leakage
PMOS Switch Leakage
NMOS On-Resistance
PMOS On-Resistance
Maximum Duty Cycle
Minimum On-Time
RUN Input High
RUN Input Low
RUN Input Current
V
IN
= 2.7V to 17V (Note 4)
(Note 4)
V
IN
= 5V
V
FB
= 0.5V, V
MODE/SYNC
= 1.5V
l
200
100
60
0.35
1.0
0
100
V
V
nA
36242fd
V
RUN
= 12V
For more information
www.linear.com/LTC3624
3
LTC3624/LTC3624-2
The
l
denotes the specifications which apply over the specified operating
junction temperature range, otherwise specifications are at T
J
= 25°C. (Note 2) V
IN
= 12V, unless otherwise noted.
SYMBOL
V
MODE/SYNC
I
MODE/SYNC
t
SS
I
LIM
I
FB
I
FB(VOUT)
V
UVLO
V
UVLO(HYS)
V
OVLO
V
OVLO(HYS)
f
OSC
PARAMETER
Pulse-Skipping Mode
Burst Mode Operation
Forced Continuous Mode
MODE/SYNC Input Current
Internal Soft-Start Time
Peak Current Limit
FB Input Current
Feedback Input Leakage Current
V
INTVCC
Undervoltage Lockout
V
INTVCC
Undervoltage Lockout Hysteresis
V
IN
Overvoltage Lockout Rising
V
IN
Overvoltage Lockout Hysteresis
Oscillator Frequency
LTC3624/LTC3624-3.3/LTC3624-5
(E-, I-Grade)
(H-Grade)
LTC3624-2/LTC3624-23.3/LTC3624-25
(E-, I-Grade)
(H-Grade)
f
SYNC
V
INTVCC
ΔV
PGOOD
SYNC Capture Range
V
INTVCC
LDO Output Voltage
Power Good Range
LTC3624/LTC3624-3.3/LTC3624-5
LTC3624-2/LTC3624-23.3/LTC3624-25
V
IN
> 4V
LTC3624/LTC3624-2
LTC3624-3.3/LTC3624-5/LTC3624-23.3/
LTC3624-25
R
PGOOD
t
PGOOD
Power Good Resistance
PGOOD Delay
PGOOD Low to High
PGOOD High to Low
l
l
l
l
l
elecTrical characTerisTics
CONDITIONS
MIN
V
INTVCC
– 0.4
1.0
TYP
MAX
0.3
V
INTVCC
– 1.2
UNITS
V
V
V
nA
ms
A
A
nA
µA
V
mV
V
mV
MHz
MHz
MHz
MHz
MHz
MHz
%
%
V
%
%
Ω
Cycles
Cycles
0
1
V
IN
> 5V (E-, I-Grade)
V
IN
> 5V (H-Grade)
Fixed Output Versions
V
IN
Ramping Up
2.4
18
0.92
0.82
0.78
2.05
1.8
1.7
50
50
3.2
3.6
±7.5
±7.5
280
0
32
l
l
100
3.6
10
2.4
2.3
3
2
2.6
175
19
500
1.00
10
2.7
20
1.08
1.16
2.45
2.6
150
140
4.0
±11.5
±13
350
2.25
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 LTC3624/LTC3624-2 is tested under pulsed load conditions
such that T
J
≈ T
A
. The LTC3624E/LTC3624E-2 is guaranteed to meet
specifications from 0°C to 85°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 LTC3624I/LTC3624I-2 is guaranteed over the –40°C to 125°C
operating junction temperature range and the LTC3624H is guaranteed
over the –40°C to 150°C operating junction temperature range. High
junction temperatures degrade operating lifetimes; operation lifetime is
decreased for junction temperatures greater than 125°C. Note that the
maximum ambient temperature consistent with these specifications is
determined by specific operating conditions in conjunction with board
layout, the rated package thermal impedance and other environmental
factors. T
J
is calculated from the ambient, T
A
, and power dissipation, P
D
,
according to the following formula:
T
J
= T
A
+ (P
D
•
θ
JA
)
Note 3:
The quiescent current in forced continuous mode does not include
switching loss of the power FETs.
Note 4:
The LTC3624 is tested in a proprietary test mode that servos FB to
the output of the error amplifier.
Note 5:
This IC includes overtemperature protection that is intended to
protect the device during momentary overload conditions. The maximum
rated junction temperature will be exceeded when overtemperature
protection is active Continuous operation above the specified maximum
operating junction temperature may impair device reliability. The
overtemperature protection level is not production tested but guaranteed
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