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LTC3630HDHC#PBF

P1-P3P4-P6P7-P9P10-P12P13-P15P16-P18P19-P21P22-P24P25-P26
LTC3630
1
3630fd
For more information www.linear.com/LTC3630
Typical applicaTion
FeaTures DescripTion
High Efficiency, 65V
500mA Synchronous
Step-Down Converter
The LTC
®
3630 is a high efficiency step-down DC/DC
converter with internal high side and synchronous power
switches that draws only 12μA typical DC supply current
while maintaining a regulated output voltage at no load.
The LTC3630 can supply up to 500mA load current and
features a programmable peak current limit that provides
a simple method for optimizing efficiency and for reduc
-
ing output ripple and component size. The LTC3630’s
combination of Burst Mode
®
operation, integrated power
switches, low quiescent current, and programmable peak
current limit provides high efficiency over a broad range
of load currents.
With its wide input range of 4V to 65V, the LTC3630 is a
robust converter suited for regulating a wide variety of
power sources. Additionally, the LTC3630 includes a precise
run threshold and soft-start feature to guarantee that the
power system start-up is well-controlled in any environ
-
ment. A feedback comparator output enables multiple
LTC3630s to be paralleled in higher current applications.
The LTC3630 is available in the thermally-enhanced
3mm × 5mm DFN and the MSE16 packages.
Efficiency vs Load Current
4V to 65V Input to 3.3V Output, 500mA Step-Down Converter
applicaTions
n
Wide Operating Input Voltage Range: 4V to 65V
n
Synchronous Operation for Highest Efficiency
n
Internal High Side and Low Side Power MOSFETs
n
No Compensation Required
n
Adjustable 50mA to 500mA Maximum Output Current
n
Low Dropout Operation: 100% Duty Cycle
n
Low Quiescent Current: 12µA
n
Wide Output Range: 0.8V to V
IN
n
0.8V ±1% Feedback Voltage Reference
n
Precise RUN Pin Threshold
n
Internal and External Soft-Start
n
Programmable 1.8V, 3.3V, 5V or Adjustable Output
n
Few External Components Required
n
Low Profile (0.75mm) 3mm × 5mm DFN and
Thermally-Enhanced MSE16 Packages
n
Industrial Control Supplies
n
Medical Devices
n
Distributed Power Systems
n
Portable Instruments
n
Battery-Operated Devices
n
Automotive
n
Avionics
L, LT, LTC, LTM, Burst Mode, Linear Technology and the Linear logo are registered trademarks
and ThinSOT is a trademark of Linear Technology Corporation. All other trademarks are the
property of their respective owners.
SW
V
IN
4V TO 65V
LTC3630
47µH
100µF
×2
3630 TA01a
2.2µF
V
OUT
3.3V
500mA
GND
V
FB
SS
V
PRG2
RUN
V
PRG1
I
SET
FBO
V
IN
LOAD CURRENT (mA)
50
EFFICIENCY (%)
70
90
100
0.1 10 100
1000
3630 TA01b
30
1
80
60
40
V
OUT
= 3.3V
V
IN
= 12V
V
IN
= 65V
I
SET
= 220kΩ||220pF
I
SET
= OPEN
LTC3630
2
3630fd
For more information www.linear.com/LTC3630
absoluTe MaxiMuM raTings
V
IN
Supply Voltage ..................................... –0.3V to 70V
SW Voltage (DC) ........................... –0.3V to (V
IN
+ 0.3V)
RUN Voltage................................................. –0.3V to 6V
SS, FBO, I
SET
Voltages ................................. –0.3V to 6V
V
FB
, V
PRG1
, V
PRG2
Voltages ......................... –0.3V to 6V
(Note 1)
1
3
5
6
7
8
SW
V
IN
RUN
V
PRG2
V
PRG1
GND
16
14
12
11
10
9
GND
GND
FBO
I
SET
SS
V
FB
TOP VIEW
17
GND
MSE PACKAGE
VARIATION: MSE16 (12)
16-LEAD PLASTIC MSOP
T
JMAX
= 150°C, θ
JA
= 45°C/W, θ
JC
= 10°C/W
EXPOSED PAD (PIN 17) IS GND, MUST BE SOLDERED TO PCB
16
15
14
13
12
11
10
9
17
GND
1
2
3
4
5
6
7
8
GND
NC
GND
NC
FBO
I
SET
SS
V
FB
SW
NC
V
IN
NC
RUN
V
PRG2
V
PRG1
GND
TOP VIEW
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
pin conFiguraTion
orDer inForMaTion
LEAD FREE FINISH TAPE AND REEL PART MARKING* PACKAGE DESCRIPTION TEMPERATURE RANGE
LTC3630EMSE#PBF LTC3630EMSE#TRPBF 3630 16-Lead Plastic MSOP –40°C to 125°C
LTC3630IMSE#PBF LTC3630IMSE#TRPBF 3630 16-Lead Plastic MSOP –40°C to 125°C
LTC3630HMSE#PBF LTC3630HMSE#TRPBF 3630 16-Lead Plastic MSOP –40°C to 150°C
LTC3630MPMSE#PBF LTC3630MPMSE#TRPBF 3630 16-Lead Plastic MSOP –55°C to 150°C
LTC3630EDHC#PBF LTC3630EDHC#TRPBF 3630
16-Lead (5mm × 3mm) Plastic DFN
–40°C to 125°C
LTC3630IDHC#PBF LTC3630IDHC#TRPBF 3630
16-Lead (5mm × 3mm) Plastic DFN
–40°C to 125°C
LTC3630HDHC#PBF LTC3630HDHC#TRPBF 3630
16-Lead (5mm × 3mm) Plastic DFN
–40°C to 150°C
LTC3630MPDHC#PBF LTC3630MPDHC#TRPBF 3630
16-Lead (5mm × 3mm) Plastic DFN
–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/
Operating Junction Temperature Range (Notes 2, 3, 4)
LTC3630E, LTC3630I ......................... –40°C to 125°C
LTC3630H .......................................... –40°C to 150°C
LTC3630MP ....................................... –55°C to 150°C
Storage Temperature Range .................. –65°C to 150°C
Lead Temperature (Soldering, 10 sec)
MSOP ............................................................... 300°C
LTC3630
3
3630fd
For more information www.linear.com/LTC3630
elecTrical characTerisTics
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.
SYMBOL PARAMETER CONDITIONS MIN TYP MAX UNITS
Input Supply (V
IN
)
V
IN
Input Voltage Operating Range 4 65 V
V
OUT
Output Voltage Operating Range 0.8 V
IN
V
UVLO V
IN
Undervoltage Lockout V
IN
Rising
V
IN
Falling
Hysteresis
l
l
3.45
3.30
3.65
3.5
150
3.85
3.70
V
V
mV
I
Q
DC Supply Current (Note 5)
Active Mode
Sleep Mode
Shutdown Mode
No Load
V
RUN
= 0V
165
12
5
270
20
10
µA
µA
µA
V
RUN
RUN Pin Threshold Voltage RUN Rising
RUN Falling
Hysteresis
1.17
1.06
1.21
1.10
110
1.25
1.14
V
V
mV
Output Supply (V
FB
)
V
FB(ADJ)
Feedback Comparator Threshold Voltage
(Adjustable Output)
V
FB
Rising, V
PRG1
= V
PRG2
= 0V
LTC3630E, LTC3630I
LTC3630H, LTC3630MP
l
l
0.792
0.788
0.800
0.800
0.808
0.812
V
V
V
FBH
Feedback Comparator Hysteresis
(Adjustable Output)
V
FB
Falling, V
PRG1
= V
PRG2
= 0V
l
2.5 5 7 mV
I
FB
Feedback Pin Current V
FB
= 1V, V
PRG1
= 0V, V
PRG2
= 0V –10 0 10 nA
V
FB(FIXED)
Feedback Comparator Threshold Voltages
(Fixed Output)
V
FB
Rising, V
PRG1
= SS, V
PRG2
= 0V
V
FB
Falling, V
PRG1
= SS, V
PRG2
= 0V
l
l
4.940
4.910
5.015
4.985
5.090
5.060
V
V
V
FB
Rising, V
PRG1
= 0V, V
PRG2
= SS
V
FB
Falling, V
PRG1
= 0V, V
PRG2
= SS
l
l
3.260
3.240
3.310
3.290
3.360
3.340
V
V
V
FB
Rising, V
PRG1
= V
PRG2
= SS
V
FB
Falling, V
PRG1
= V
PRG2
= SS
l
l
1.780
1.770
1.810
1.8
1.840
1.83
V
V
∆V
LINEREG
Feedback Voltage Line Regulation V
IN
= 4V to 65V 0.001 %/V
Operation
I
PEAK
Peak Current Comparator Threshold I
SET
Floating
100k Resistor from I
SET
to GND
I
SET
Shorted to GND
l
l
l
1
0.45
0.09
1.2
0.6
0.12
1.4
0.75
0.15
A
A
A
R
ON
Power Switch On-Resistance
Top Switch
Bottom Switch
I
SW
= –200mA
I
SW
= 200mA
1.00
0.53
Ω
Ω
I
LSW
Switch Pin Leakage Current RUN = Open, V
IN
= 65V, SW = 0V 0.1 1 μA
I
SS
Soft-Start Pin Pull-Up Current V
SS
< 2.5V 3 5 6 μA
t
INT(SS)
Internal Soft-Start Time SS Pin Floating 0.8 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.
P1-P3P4-P6P7-P9P10-P12P13-P15P16-P18P19-P21P22-P24P25-P26

LTC3630HDHC#PBF

Mfr. #:
Buy LTC3630HDHC#PBF
Manufacturer:
Analog Devices / Linear Technology
Description:
Switching Voltage Regulators High Efficiency, 65V 500mA Synchronous Step-Down Converter
Lifecycle:
New from this manufacturer.
Delivery:
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