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LT3509IMSE#PBF

Conv DC-DC 3.6V to 36V Synchronous Step Down Dual-Out 0.8V to 35.28V 0.7A/0.7A Automotive 16-Pin MSOP EP Tube

厂商名称：ADI(亚德诺半导体)

厂商官网：https://www.analog.com

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参数 参考设计 预览 参数对比
器件参数
参数名称
属性值
欧盟限制某些有害物质的使用
Compliant
ECCN (US)
EAR99
Part Status
Active
HTS
8542.39.00.01
类型
Type
Synchronous Step Down
输出类型
Output Type
Adjustable
Switching Frequency (kHz)
300 to 2200
Switching Regulator
Yes
Number of Outputs
2
Output Voltage (V)
0.8 to 35.28
Maximum Output Current (A)
0.7|0.7|0.7|0.7|0.7|0.7|0.7|0.7|0.7|0.7|0.7|0.7|0.7|0.7|0.7|0.7|0.7|0.7|0.7|0.7|0.7|0.7|0.7|0.7|0.7|0.7|0.7|0.7|0.7|0.7|0.7|0.7|0.7|0.7|0.7|0.7|0.7|0.7|0.7|0.7
Minimum Input Voltage (V)
3.6
Maximum Input Voltage (V)
36
Operating Supply Voltage (V)
3.6 to 36
Typical Quiescent Current (uA)
1900
Minimum Operating Temperature (°C)
-40
Maximum Operating Temperature (°C)
125
Supplier Temperature Grade
Industrial
系列
Packaging
Tube
Pin Count
16
Standard Package Name
SOP
Supplier Package
MSOP EP
Mounting
Surface Mount
Package Height
0.86
Package Length
4.04
Package Width
3
PCB changed
16
Lead Shape
Gull-wing
参考设计
展开全部 ↓
文档预览
LT3509
Dual 36V, 700mA
Step-Down Regulator
FeaTures
n
n
n
DescripTion
The
LT
®
3509
is a dual, current mode, step-down switching
regulator, with internal power switches each capable of
providing 700mA output current. This regulator provides a
compact and robust solution for multi-rail systems in harsh
environments. It incorporates several protection features
including overvoltage lockout and cycle-by-cycle current
limit. Thermal shutdown provides additional protection.
The loop compensation components and the boost diodes
are integrated on-chip. Switching frequency is set by a
single external resistor. External synchronization is also
possible. The high maximum switching frequency allows
the use of small inductors and ceramic capacitors for low
ripple. Constant frequency operation above the AM band
avoids interference with radio reception, making the LT3509
well suited for automotive applications. Each regulator
has an independent shutdown and soft-start control pin.
When both converters are powered down, the common
circuitry enters a low current shutdown state.
L,
LT, LTC, LTM, Burst Mode, Linear Technology and the Linear logo are registered trademarks
of Linear Technology Corporation. All other trademarks are the property of their respective
owners.
n
n
n
n
n
n
n
Two 700mA Switching Regulators with Internal
Power Switches
Wide 3.6V to 36V Operating Range
Overvoltage Lockout Protects Circuit Through 60V
Supply Transients
Short-Circuit Robust
Low Dropout Voltage: 95% Maximum Duty Cycle
Adjustable 300kHz to 2.2MHz Switching Frequency
Synchronizable Over the Full Range
Uses Small Inductors and Ceramic Capacitors
Integrated Boost Diodes
Internal Compensation
Thermally Enhanced 14-Lead (4mm
×
3mm)
DFN and 16 Lead MSOP Packages
applicaTions
n
n
n
n
n
Automotive Electronics
Industrial Controls
Wall Transformer Regulation
Networking Devices
CPU, DSP, or FPGA Power
Typical applicaTion
3.3V and 5V Dual Output Step-Down Converter
6.5V TO 36V
(TRANSIENT TO 60V)
2.2µF
90
V
IN
BOOST1
3.3V
700mA
6.8µH
0.1µF
SW1
31.6k
MBRM140
10µF
10.2k
1nF
DA1
FB1
LT3509
53.6k
DA2
FB2
MBRM140
22µF
SW2
BD
BOOST2
0.1µF 10µH
EFFICIENCY (%)
5V
700mA
85
80
75
70
65
60
1nF
60.4k
f
SW
= 700kHz
10.2k
3509 TA01a
Efficiency
V
OUT
= 5V
V
OUT
= 3.3V
RUN/SS1 RUN/SS2
SYNC
GND
RT
55
50
0.0
V
IN
= 12V
f
SW
= 700kHz
0.1
0.2
0.3 0.4 0.5
LOAD CURRENT (A)
0.6
0.7
3509 TA01b
3509fd
For more information
www.linear.com/LT3509
1
LT3509
absoluTe MaxiMuM raTings
(Note 1)
V
IN
Pin (Note 2) ........................................................60V
BD Pin .......................................................................20V
BOOST Pins ..............................................................60V
BOOST Pins above SW .............................................30V
RUN/SS, FB, RT, SYNC pins ........................................6V
Operating Junction Temperature Range (Notes 3, 6)
LT3509E ............................................ –40°C to 125°C
LT3509I ............................................. –40°C to 125°C
LT3509H ............................................ –40°C to 150°C
Storage Temperature Range .................. –65°C to 150°C
Lead Temperature (Soldering, 10 sec.)
MSOP Package ................................................. 300°C
pin conFiguraTion
TOP VIEW
DA1
BOOST1
SW1
V
IN
SW2
BOOST2
DA2
1
2
3
4
5
6
7
15
14 FB1
13 RUN/SS1
12 BD
11 SYNC
10 RT
9 RUN/SS2
8 FB2
TOP VIEW
DA1
BOOST1
SW1
V
IN
V
IN
SW2
BOOST2
DA2
1
2
3
4
5
6
7
8
16
15
14
13
12
11
10
9
FB1
RUN/SS1
AGND
BD
SYNC
RT
RUN/SS2
FB2
17
DE14 PACKAGE
14-LEAD (4mm
×
3mm) PLASTIC DFN
θ
JA
= 43°C/W,
θ
JC
= 4.3°C/W
EXPOSED PAD (PIN 15) IS GND, MUST BE SOLDERED TO PCB
MSE PACKAGE
16-LEAD PLASTIC MSOP
θ
JA
= 43°C/W,
θ
JC
= 4.3°C/W
EXPOSED PAD (PIN 17) IS GND, MUST BE SOLDERED TO PCB
orDer inForMaTion
LEAD FREE FINISH
LT3509EDE#PBF
LT3509IDE#PBF
LT3509EMSE#PBF
LT3509IMSE#PBF
LT3509HMSE#PBF
TAPE AND REEL
LT3509EDE#TRPBF
LT3509IDE#TRPBF
LT3509EMSE#TRPBF
LT3509IMSE#TRPBF
LT3509HMSE#TRPBF
PART MARKING*
3509
3509
3509
3509
3509
PACKAGE DESCRIPTION
14-Lead (4mm
×
3mm) Plastic DFN
14-Lead (4mm
×
3mm) Plastic DFN
16-Lead Plastic MSOP with Exposed Pad
16-Lead Plastic MSOP with Exposed Pad
16-Lead Plastic MSOP with Exposed Pad
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
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.
2
3509fd
For more information
www.linear.com/LT3509
LT3509
elecTrical characTerisTics
PARAMETER
V
IN
Undervoltage Lockout
V
IN
Overvoltage Lockout
Input Quiescent Current
Input Shutdown Current
Feedback Pin Voltage
Reference Voltage Line Regulation
RUN/SS Shutdown Threshold
RUN/SS Voltage for Full I
OUT
RUN/SS Pin Pull-up Current
Feedback Pin Bias Current (Note 4)
Switch Current Limit
DA Comparator Current Threshold
Boost Pin Current
Switch Leakage Current
Switch Saturation Voltage
Minumum Boost Voltage above Switch
Boost Diode Forward Voltage
Boost Diode Leakage
Switching Frequency
I
SW
= 0.9A (Note 5)
I
SW
= 0.9A
I
BD
= 20mA
V
R
= 30V
R
T
= 40.2kΩ
R
T
= 180kΩ
R
T
= 14.1kΩ
l
The
l
denotes the specifications which apply over the full operating
temperature range, otherwise specifications are at T
A
= 25°C, V
IN
= 12V. (Note 3)
CONDITIONS
MIN
37
Not Switching V
FB
> 0.8V
V(RUN/SS[1,2]) < 0.3V
l
TYP
3.3
38.5
1.9
9
MAX
3.6
40
2.2
15
0.816
0.8
2
1.3
500
1.9
1.2
36
1.0
2.2
0.9
5
1.08
290
2.5
150
UNITS
V
V
mA
µA
V
%/V
V
V
µA
nA
A
A
mA
µA
V
V
V
µA
MHz
kHz
MHz
V
ns
0.784
0.4
0.7
0.8
0.01
0.6
1
90
1.4
0.95
22
0.01
0.32
1.5
0.7
0.1
3.6V < V
IN
< 36V
V
FB
= 0.8V
l
l
1.05
0.7
I
SW
= 0.9A
0.92
237
2.0
1.0
260
2.15
1.0
80
Sync Pin Input Threshold
Switch Minimum Off-Time
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 Voltage at the V
IN
pin is 60V for non-repetitive
1 second transients and 36V for continuous operation.
Note 3.
The LT3509E is guaranteed to meet performance specifications from
0°C to 125°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 LT3509I is guaranteed
over the full –40°C to 125°C temperature range. The LT3509H is guaranteed
l
over the full –40°C to 150°C operating junction temperature range. High
junction temperatures degrade operating lifetimes. Operating lifetime is
derated at junction temperatures greater than 125°C.
Note 4.
Current flows out of pin.
Note 5.
Switch Saturation Voltage is guaranteed by design.
Note 6.
This IC includes overtemperature protection that is intended to protect
the device during momentary overload conditions. Junction temperature will
exceed the maximum operating temperature when overtemperature protection
is active. Continuous operation above the specified maximum operating
junction temperature may impair device reliability.
3509fd
For more information
www.linear.com/LT3509
3
LT3509
Typical perForMance characTerisTics
Efficiency vs Load Current
V
OUT
= 5V, f
SW
= 2.0MHz
95
90
85
EFFICIENCY (%)
80
75
70
65
60
0
0.2
0.4
I
LOAD
(A)
3509 G01
Efficiency vs Load Current
V
OUT
= 3.3V, f
SW
= 2.0MHz
95
90
T
A
= 25ºC
90
85
V
IN
= 12V
80
EFFICIENCY (%)
75
70
65
60
55
0
0.2
0.4
I
LOAD
(A)
3509 G02
Efficiency vs Load Current
V
OUT
= 1.8V, f
SW
= 0.7MHz
T
A
= 25ºC
T
A
= 25ºC
V
IN
= 12V
EFFICIENCY (%)
85
80
75
70
65
60
V
IN
= 24V
V
IN
= 12V
0.6
0.8
55
0.6
0.8
50
0
0.2
0.4
I
LOAD
(A)
0.6
0.8
3509 G03
Switch V
CE(SAT)
vs I
SW
0.35
0.3
20
0.25
I
BOOST
(mA)
V
CE(SAT)
(V)
0.2
0.15
0.1
0.05
0
0
0.2
0.4
0.6
I
SW
(A)
0.8
1.0
3509 G04
I
BOOST
vs I
SW
25
T
A
= 25ºC
T
A
= 25ºC
15
10
5
0
0
0.2
0.4
0.6
I
SW
(A)
0.8
1
3509 G05
Boost Diode Characteristics
1.2
1
0.8
V
f
(V)
0.6
0.4
0.2
0
FREQUENCY (MHz)
1.5
T
A
= 25ºC
2.2
2.0
Frequency vs R
T
T
A
= 25ºC
1.0
0.5
0
100
BOOST DIODE CURRENT
(mA)
50
150
3509 G06
0
0
20
40
60
80 100 120 140 160 180
R
T
(kΩ)
3509 G07
4
3509fd
For more information
www.linear.com/LT3509
LT3509
Typical perForMance characTerisTics
FB Pin Voltage vs Temperature
0.810
1.04
1.03
FEEDBACK PIN VOLTAGE (V)
0.805
NORMALIZED (f
SW
)
MAXIMUM V
IN
(V)
1.02
1.01
1.00
0.99
0.98
0.790
–50 –25
0
25 50 75 100 125 150
TEMPERATURE (°C)
3509 G08
f
SW
vs Temperature
(Measured at 1MHz)
30
25
20
15
10
5
0
Max V
IN
for Constant Frequency
V
OUT
= 3.3V, f
SW
= 2MHz
T
A
= 25ºC
T
A
= 85ºC
0.800
0.795
0.97
–50 –25
0
25 50 75 100 125 150
TEMPERATURE (˚C)
3509 G09
0
0.2
0.4
I
LOAD
(A)
0.6
0.8
3509 G10
Max V
IN
for Constant Frequency
V
OUT
= 5V, f
SW
= 2MHz
45
40
35
MAXIMUM V
IN
(V)
30
25
20
15
10
5
0
0
0.2
0.4
I
LOAD
(A)
3509 G11
160
T
A
= 25ºC
T
A
= 85ºC
MINIMUM ON-TIME (ns)
140
120
100
80
60
40
20
0.6
0.8
Minimum On-Time vs
Temperature, I
LOAD
= 0.3A
0
–50 –25
0
25 50 75 100 125 150
TEMPERATURE (°C)
3509 G12
I
LIM
vs Temperature
1.5
1.8
1.6
1.3
SWITCH
1.4
1.2
I
LIM
(A)
DA
1
0.8
0.6
0.7
0.4
0.2
0.5
–50 –25
0
25 50
75 100 125 150
TEMPERATURE (°C)
3509 G13
I
LIM
vs Duty Cycle
T
A
= 25ºC
I
LIM
(A)
1.0
0.9
0
0
10 20 30 40 50 60 70 80 90 100
DUTY CYCLE
(%)
3509 G14
3509fd
For more information
www.linear.com/LT3509
5
查看更多>
参数对比
与LT3509IMSE#PBF相近的元器件有：LT3509EDE#PBF、LT3509EDE#TRPBF、LT3509EMSE#PBF、LT3509EMSE#TRPBF、LT3509HMSE#PBF、LT3509HMSE#TRPBF、LT3509IMSE#TRPBF。描述及对比如下：
型号 LT3509IMSE#PBF LT3509EDE#PBF LT3509EDE#TRPBF LT3509EMSE#PBF LT3509EMSE#TRPBF LT3509HMSE#PBF LT3509HMSE#TRPBF LT3509IMSE#TRPBF
描述 Conv DC-DC 3.6V to 36V Synchronous Step Down Dual-Out 0.8V to 35.28V 0.7A/0.7A Automotive 16-Pin MSOP EP Tube Conv DC-DC 3.6V to 36V Synchronous Step Down Dual-Out 0.8V to 35.28V 0.7A/0.7A Automotive 14-Pin DFN EP Tube Conv DC-DC 3.6V to 36V Synchronous Step Down Dual-Out 0.8V to 35.28V 0.7A/0.7A Automotive 14-Pin DFN EP T/R Conv DC-DC 3.6V to 36V Synchronous Step Down Dual-Out 0.8V to 35.28V 0.7A/0.7A Automotive 16-Pin MSOP EP Tube Conv DC-DC 3.6V to 36V Synchronous Step Down Dual-Out 0.8V to 35.28V 0.7A/0.7A Automotive 16-Pin MSOP EP T/R Conv DC-DC 3.6V to 36V Synchronous Step Down Dual-Out 0.8V to 35.28V 0.7A/0.7A Automotive 16-Pin MSOP EP Tube Conv DC-DC 3.6V to 36V Synchronous Step Down Dual-Out 0.8V to 35.28V 0.7A/0.7A Automotive 16-Pin MSOP EP T/R Conv DC-DC 3.6V to 36V Synchronous Step Down Dual-Out 0.8V to 35.28V 0.7A/0.7A Automotive 16-Pin MSOP EP T/R
欧盟限制某些有害物质的使用 Compliant Compliant Compliant Compliant Compliant Compliant Compliant Compliant
ECCN (US) EAR99 EAR99 EAR99 EAR99 EAR99 EAR99 EAR99 EAR99
Part Status Active Active Active Active Active Active Active Active
HTS 8542.39.00.01 8542.39.00.01 8542.39.00.01 8542.39.00.01 8542.39.00.01 8542.39.00.01 8542.39.00.01 8542.39.00.01
类型
Type		 Synchronous Step Down Synchronous Step Down Synchronous Step Down Synchronous Step Down Synchronous Step Down Synchronous Step Down Synchronous Step Down Synchronous Step Down
输出类型
Output Type		 Adjustable Adjustable Adjustable Adjustable Adjustable Adjustable Adjustable Adjustable
Switching Frequency (kHz) 300 to 2200 300 to 2200 300 to 2200 300 to 2200 300 to 2200 300 to 2200 300 to 2200 300 to 2200
Switching Regulator Yes Yes Yes Yes Yes Yes Yes Yes
Number of Outputs 2 2 2 2 2 2 2 2
Output Voltage (V) 0.8 to 35.28 0.8 to 35.28 0.8 to 35.28 0.8 to 35.28 0.8 to 35.28 0.8 to 35.28 0.8 to 35.28 0.8 to 35.28
Maximum Output Current (A) 0.7|0.7|0.7|0.7|0.7|0.7|0.7|0.7|0.7|0.7|0.7|0.7|0.7|0.7|0.7|0.7|0.7|0.7|0.7|0.7|0.7|0.7|0.7|0.7|0.7|0.7|0.7|0.7|0.7|0.7|0.7|0.7|0.7|0.7|0.7|0.7|0.7|0.7|0.7|0.7 0.7|0.7|0.7|0.7|0.7|0.7|0.7|0.7|0.7|0.7|0.7|0.7|0.7|0.7|0.7|0.7|0.7|0.7|0.7|0.7|0.7|0.7|0.7|0.7|0.7|0.7|0.7|0.7|0.7|0.7|0.7|0.7|0.7|0.7|0.7|0.7|0.7|0.7 0.7|0.7|0.7|0.7|0.7|0.7|0.7|0.7|0.7|0.7|0.7|0.7|0.7|0.7|0.7|0.7|0.7|0.7|0.7|0.7|0.7|0.7|0.7|0.7|0.7|0.7|0.7|0.7|0.7|0.7|0.7|0.7|0.7|0.7|0.7|0.7 0.7|0.7|0.7|0.7|0.7|0.7|0.7|0.7|0.7|0.7|0.7|0.7|0.7|0.7|0.7|0.7|0.7|0.7|0.7|0.7|0.7|0.7|0.7|0.7|0.7|0.7|0.7|0.7|0.7|0.7|0.7|0.7|0.7|0.7|0.7|0.7|0.7|0.7|0.7|0.7|0.7 0.7|0.7|0.7|0.7|0.7|0.7|0.7|0.7|0.7|0.7|0.7|0.7|0.7|0.7|0.7|0.7|0.7|0.7|0.7|0.7|0.7|0.7|0.7|0.7|0.7|0.7|0.7|0.7|0.7|0.7|0.7|0.7|0.7|0.7|0.7|0.7|0.7|0.7|0.7|0.7 0.7|0.7|0.7|0.7|0.7|0.7|0.7|0.7|0.7|0.7|0.7|0.7|0.7|0.7|0.7|0.7|0.7|0.7|0.7|0.7|0.7|0.7|0.7|0.7|0.7|0.7|0.7|0.7|0.7|0.7|0.7|0.7|0.7|0.7|0.7|0.7|0.7|0.7|0.7|0.7|0.7 0.7|0.7|0.7|0.7|0.7|0.7|0.7|0.7|0.7|0.7|0.7|0.7|0.7|0.7|0.7|0.7|0.7|0.7|0.7|0.7|0.7|0.7|0.7|0.7|0.7|0.7|0.7|0.7|0.7|0.7|0.7|0.7|0.7|0.7|0.7|0.7|0.7|0.7|0.7|0.7|0.7 0.7|0.7|0.7|0.7|0.7|0.7|0.7|0.7|0.7|0.7|0.7|0.7|0.7|0.7|0.7|0.7|0.7|0.7|0.7|0.7|0.7|0.7|0.7|0.7|0.7|0.7|0.7|0.7|0.7|0.7|0.7|0.7|0.7|0.7|0.7|0.7|0.7|0.7|0.7|0.7|0.7
Minimum Input Voltage (V) 3.6 3.6 3.6 3.6 3.6 3.6 3.6 3.6
Maximum Input Voltage (V) 36 36 36 36 36 36 36 36
Operating Supply Voltage (V) 3.6 to 36 3.6 to 36 3.6 to 36 3.6 to 36 3.6 to 36 3.6 to 36 3.6 to 36 3.6 to 36
Typical Quiescent Current (uA) 1900 1900 1900 1900 1900 1900 1900 1900
Minimum Operating Temperature (°C) -40 -40 -40 -40 -40 -40 -40 -40
Maximum Operating Temperature (°C) 125 125 125 125 125 150 150 125
Supplier Temperature Grade Industrial Extended Extended Extended Extended Automotive Automotive Industrial
系列
Packaging		 Tube Tube Tape and Reel Tube Tape and Reel Tube Tape and Reel Tape and Reel
Pin Count 16 14 14 16 16 16 16 16
Standard Package Name SOP DFN DFN SOP SOP SOP SOP SOP
Supplier Package MSOP EP DFN EP DFN EP MSOP EP MSOP EP MSOP EP MSOP EP MSOP EP
Mounting Surface Mount Surface Mount Surface Mount Surface Mount Surface Mount Surface Mount Surface Mount Surface Mount
Package Height 0.86 0.75(Max) 0.75(Max) 0.86 0.86 0.86 0.86 0.86
Package Length 4.04 4 4 4.04 4.04 4.04 4.04 4.04
Package Width 3 3 3 3 3 3 3 3
PCB changed 16 14 14 16 16 16 16 16
Lead Shape Gull-wing No Lead No Lead Gull-wing Gull-wing Gull-wing Gull-wing Gull-wing
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