EXPOSED PAD (PIN 17) IS GND, MUST BE SOLDERED TO PCB
DHC PACKAGE
16-LEAD (5mm 3mm) PLASTIC DFN
(NOTE 6)
T
JMAX
= 150°C,
θ
JA
= 43°C/W,
θ
JC
= 5°C/W
EXPOSED PAD (PIN 17) IS GND, MUST BE SOLDERED TO PCB
ORDER INFORMATION
LEAD FREE FINISH
LTC3630EMSE#PBF
LTC3630IMSE#PBF
LTC3630HMSE#PBF
LTC3630MPMSE#PBF
LTC3630EDHC#PBF
LTC3630IDHC#PBF
LTC3630HDHC#PBF
LTC3630MPDHC#PBF
TAPE AND REEL
LTC3630EMSE#TRPBF
LTC3630IMSE#TRPBF
LTC3630HMSE#TRPBF
LTC3630MPMSE#TRPBF
LTC3630EDHC#TRPBF
LTC3630IDHC#TRPBF
LTC3630HDHC#TRPBF
LTC3630MPDHC#TRPBF
PART MARKING*
3630
3630
3630
3630
3630
3630
3630
3630
PACKAGE DESCRIPTION
16-Lead Plastic MSOP
16-Lead Plastic MSOP
16-Lead Plastic MSOP
16-Lead Plastic MSOP
16-Lead (5mm
×
3mm) Plastic DFN
16-Lead (5mm
×
3mm) Plastic DFN
16-Lead (5mm
×
3mm) Plastic DFN
16-Lead (5mm
×
3mm) Plastic DFN
TEMPERATURE RANGE
–40°C to 125°C
–40°C to 125°C
–40°C to 150°C
–55°C to 150°C
–40°C to 125°C
–40°C to 125°C
–40°C to 150°C
–55°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/
3630fb
2
LTC3630
ELECTRICAL CHARACTERISTICS
SYMBOL
V
IN
V
OUT
UVLO
PARAMETER
Input Voltage Operating Range
Output Voltage Operating Range
V
IN
Undervoltage Lockout
V
IN
Rising
V
IN
Falling
Hysteresis
l
l
The
l
denotes the specifications which apply over the specified operating
junction temperature range, otherwise specifications are at T
A
= 25°C (Note 2). V
IN
= 12V, unless otherwise noted.
CONDITIONS
MIN
4
0.8
3.45
3.30
3.65
3.5
150
165
12
5
1.17
1.06
1.21
1.10
110
TYP
MAX
65
V
IN
3.85
3.70
UNITS
V
V
V
V
mV
μA
μA
μA
V
V
mV
Input Supply (V
IN
)
I
Q
DC Supply Current (Note 5)
Active Mode
Sleep Mode
Shutdown Mode
RUN Pin Threshold Voltage
No Load
V
RUN
= 0V
RUN Rising
RUN Falling
Hysteresis
V
FB
Rising, V
PRG1
= V
PRG2
= 0V
LTC3630E, LTC3630I
LTC3630H, LTC3630MP
V
FB
Falling, V
PRG1
= V
PRG2
= 0V
V
FB
= 1V, V
PRG1
= 0V, V
PRG2
= 0V
V
FB
Rising, V
PRG1
= SS, V
PRG2
= 0V
V
FB
Falling, V
PRG1
= SS, V
PRG2
= 0V
V
FB
Rising, V
PRG1
= 0V, V
PRG2
= SS
V
FB
Falling, V
PRG1
= 0V, V
PRG2
= SS
V
FB
Rising, V
PRG1
= V
PRG2
= SS
V
FB
Falling, V
PRG1
= V
PRG2
= SS
l
l
l
l
l
l
270
20
10
1.25
1.14
V
RUN
Output Supply (V
FB
)
V
FB(ADJ)
Feedback Comparator Threshold Voltage
(Adjustable Output)
Feedback Comparator Hysteresis
(Adjustable Output)
Feedback Pin Current
Feedback Comparator Threshold Voltages
(Fixed Output)
l
l
l
0.792
0.788
2.5
–10
4.940
4.910
3.260
3.240
1.780
1.770
0.800
0.800
5
0
5.015
4.985
3.310
3.290
1.810
1.8
0.001
0.808
0.812
7
10
5.090
5.060
3.360
3.340
1.840
1.83
V
V
mV
nA
V
V
V
V
V
V
%/V
V
FBH
I
FB
V
FB(FIXED)
ΔV
LINEREG
Operation
I
PEAK
Feedback Voltage Line Regulation
Peak Current Comparator Threshold
V
IN
= 4V to 65V
I
SET
Floating
100k Resistor from I
SET
to GND
I
SET
Shorted to GND
I
SW
= –200mA
I
SW
= 200mA
RUN = Open, V
IN
= 65V, SW = 0V
V
SS
< 2.5V
SS Pin Floating
3
l
l
l
1
0.45
0.09
1.2
0.6
0.12
1.00
0.53
0.1
5
0.8
1.4
0.75
0.15
A
A
A
Ω
Ω
R
ON
Power Switch On-Resistance
Top Switch
Bottom Switch
Switch Pin Leakage Current
Soft-Start Pin Pull-Up Current
Internal Soft-Start Time
I
LSW
I
SS
t
INT(SS)
1
6
μA
μA
ms
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 LTC3630 is tested under pulsed load conditions such that
T
J
≈ T
A
. The LTC3630E is guaranteed to meet performance specifications
from 0°C to 85°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 LTC3630I is guaranteed
over the –40°C to 125°C operating junction temperature range, the
LTC3630H is guaranteed over the –40°C to 150°C operating junction
temperature range and the LTC3630MP is tested and guaranteed over the
–55°C to 150°C operating junction temperature range.
High junction temperatures degrade operating lifetimes; operating lifetime
is derated 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.
Note 3:
The junction temperature (T
J
, in °C) is calculated from the ambient
temperature (T
A
, in °C) and power dissipation (P
D
, in Watts) according to
the formula:
T
J
= T
A
+ (P
D
•
θ
JA
)
where
θ
JA
is 43°C/W for the DFN or 45°C/W for the MSOP
.
3630fb
3
LTC3630
ELECTRICAL CHARACTERISTICS
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.
Note 4:
This IC includes over temperature protection that is intended to
protect the device during momentary overload conditions. The maximum
rated junction temperature will be exceeded when this protection is active.
Continuous operation above the specified absolute maximum operating
junction temperature may impair device reliability or permanently damage
the device. The overtemperature protection level is not production tested.
Note 5:
Dynamic supply current is higher due to the gate charge being
delivered at the switching frequency. See Applications Information.
Note 6:
For application concerned with pin creepage and clearance
distances at high voltages, the MSOP package should be used. See
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