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
LTC3630AEMSE#PBF
LTC3630AIMSE#PBF
LTC3630AHMSE#PBF
LTC3630AMPMSE#PBF
LTC3630AEDHC#PBF
LTC3630AIDHC#PBF
LTC3630AHDHC#PBF
LTC3630AMPDHC#PBF
TAPE AND REEL
LTC3630AEMSE#TRPBF
LTC3630AIMSE#TRPBF
LTC3630AHMSE#TRPBF
LTC3630AMPMSE#TRPBF
LTC3630AEDHC#TRPBF
LTC3630AIDHC#TRPBF
LTC3630AHDHC#TRPBF
LTC3630AMPDHC#TRPBF
PART MARKING*
3630A
3630A
3630A
3630A
3630A
3630A
3630A
3630A
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 nonstandard 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/
3630afc
2
For more information
www.linear.com/LTC3630A
LTC3630A
elecTrical characTerisTics
SYMBOL
V
IN
V
OUT
UVLO
PARAMETER
Input Voltage Operating Range
Output Voltage Operating Range
V
IN
Undervoltage Lockout
DC Supply Current (Note 5)
Active Mode
Sleep Mode
Shutdown Mode
RUN Pin Threshold Voltage
(Note 7)
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
76
V
IN
3.85
3.70
UNITS
V
V
V
V
mV
µA
µA
µA
V
V
mV
Input Supply (V
IN
)
I
Q
No Load
V
RUN
= 0V
RUN Rising
RUN Falling
Hysteresis
V
FB
Rising, V
PRG1
= V
PRG2
= 0V
LTC3630AE, LTC3630AI
LTC3630AH, LTC3630AMP
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
350
20
10
1.25
1.14
V
RUN
Output Supply (V
FB
)
V
FB(ADJ)
V
FBH
I
FB
V
FB(FIXED)
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
LINEREG
Operation
I
PEAK
R
ON
I
LSW
I
SS
t
INT(SS)
Feedback Voltage Line Regulation
Peak Current Comparator Threshold
V
IN
= 4V to 76V
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
Power Switch On-Resistance
Top Switch
Bottom Switch
Switch Pin Leakage Current
Soft-Start Pin Pull-Up Current
Internal Soft-Start Time
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 LTC3630A is tested under pulsed load conditions such that
T
J
≈ T
A
. The LTC3630AE 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 LTC3630AI is guaranteed
over the –40°C to 125°C operating junction temperature range, the
LTC3630AH is guaranteed over the –40°C to 150°C operating junction
temperature range and the LTC3630AMP 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.
3630afc
For more information
www.linear.com/LTC3630A
3
LTC3630A
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
Applications Information.
Note 7:
At very high input voltages, the minimum output voltage that can
be maintained is limited to V
IN
– 65V if the load current is less than 5mA.
Refer to the High Input Voltage Considerations in the Operation section.
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