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LT3755EUD-1#TRPBF

LT3755EUD-1#TRPBF

器件类别：模拟混合信号IC    驱动程序和接口   

厂商名称：ADI(亚德诺半导体)

厂商官网：https://www.analog.com

器件标准：

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参数 参考设计 预览
器件参数
参数名称
属性值
Brand Name
Analog Devices Inc
是否无铅
含铅
是否Rohs认证
符合
Objectid
4002706671
包装说明
3 X 3 MM, LEAD FREE, PLASTIC, MO-220WEED-2, QFN-16
针数
16
制造商包装代码
05-08-1691
Reach Compliance Code
compliant
Country Of Origin
Malaysia
Samacsys Manufacturer
Analog Devices
Samacsys Modified On
2023-01-23 14:40:50
YTEOL
8.5
接口集成电路类型
LED DISPLAY DRIVER
JESD-30 代码
S-PQCC-N16
JESD-609代码
e3
长度
3 mm
湿度敏感等级
1
复用显示功能
NO
功能数量
1
区段数
14
端子数量
16
最高工作温度
125 °C
最低工作温度
封装主体材料
PLASTIC/EPOXY
封装代码
HVQCCN
封装形状
SQUARE
封装形式
CHIP CARRIER, HEAT SINK/SLUG, VERY THIN PROFILE
峰值回流温度（摄氏度）
260
认证状态
Not Qualified
座面最大高度
0.8 mm
最大供电电压
40 V
最小供电电压
4.5 V
标称供电电压
24 V
表面贴装
YES
温度等级
OTHER
端子面层
Matte Tin (Sn) - annealed
端子形式
NO LEAD
端子节距
0.5 mm
端子位置
QUAD
处于峰值回流温度下的最长时间
30
宽度
3 mm
最小 fmax
1.05 MHz
参考设计
展开全部 ↓
文档预览
LT3755/LT3755-1/LT3755-2
40V
IN
, 75V
OUT
LED Controllers
FEATURES
n
n
n
n
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DESCRIPTION
The
LT
®
3755, LT3755-1 and LT3755-2
are DC/DC control-
lers designed to operate as a constant-current source for
driving high current LEDs. They drive a low side external
N-channel power MOSFET from an internal regulated 7.15V
supply. The fixed frequency, current mode architecture
results in stable operation over a wide range of supply
and output voltages. A ground referenced voltage FB pin
serves as the input for several LED protection features,
and also makes it possible for the converter to operate
as a constant-voltage source. A frequency adjust pin
allows the user to program the frequency from 100kHz
to 1MHz to optimize efficiency, performance or external
component size.
The LT3755/LT3755-1/LT3755-2 sense output current at
the high side of the LED string. High side current sensing
is the most flexible scheme for driving LEDs, allowing
boost, buck mode or buck-boost mode configuration.
The PWM input provides LED dimming ratios of up to
3000:1, and the CTRL input provides additional analog
dimming capability.
All registered trademarks and trademarks are the property of their respective owners. Protected
by U.S. patents, including 7199560 and 7321203.
n
n
n
n
n
n
n
n
n
n
n
3000:1 True Color PWM™ Dimming
Wide Input Voltage Range: 4.5V to 40V
Output Voltage Up to 75V
Constant-Current and Constant-Voltage Regulation
100mV High Side Current Sense
Drives LEDs in Boost, Buck Mode, Buck-Boost Mode,
SEPIC or Flyback Topology
Adjustable Frequency: 100kHz to 1MHz
Open LED Protection
Programmable Undervoltage Lockout with Hysteresis
Improved Open LED Status Pin (LT3755-2)
Frequency Synchronization (LT3755-1)
PWM Disconnect Switch Driver
CTRL Pin Provides Analog Dimming
Low Shutdown Current: <1µA
Programmable Soft-Start
Thermally Enhanced 16-Lead QFN (3mm
×
3mm)
and MSOP Packages
AEC-Q100 Qualified For Automotive Applications
APPLICATIONS
n
n
n
High Power LED
Battery Chargers
Accurate Current Limited Voltage Regulators
TYPICAL APPLICATION
50W White Automotive LED Headlamp Driver
V
IN
8V TO
40V
22µH
4.7µF
1M
185k
V
IN
SHDN/UVLO
V
REF
332k
CTRL
INTV
CC
100k
40.2k
LT3755-2
ISN
GATE
OPENLED
PWM
SS
PWMOUT
RT
V
C
GND INTV
CC
10k
0.001µF
37551 TA01a
Efficiency vs V
IN
100
1M
4.7µF
FB
ISP
0.1
1A
23.7k
96
EFFICIENCY (%)
50W
LED
STRING
92
SENSE
88
0.015
84
80
0.01µF
28.7k
375kHz
4.7µF
0
10
20
V
IN
(V)
30
40
37551 TA01b
Rev. E
Document Feedback
For more information
www.analog.com
1
LT3755/LT3755-1/LT3755-2
ABSOLUTE MAXIMUM RATINGS
(Note 1)
V
IN
............................................................................40V
SHDN/UVLO
(Note 3) ................................................40V
ISP ISN .....................................................................75V
,
INTV
CC
...................................................... V
IN
+ 0.3V, 8V
GATE, PWMOUT (Note 4) ......................... INTV
CC
+ 0.3V
CTRL, PWM,
OPENLED
.............................................12V
V
C
, V
REF
, SS, FB ..........................................................3V
SYNC ..........................................................................8V
RT ............................................................................1.5V
SENSE......................................................................0.5V
Operating Junction Temperature Range (Notes 2, 5)
LT3755E/LT3755I ...............................–40°C to 125°C
LT3755H/LT3755J .............................–40°C TO 150°C
Storage Temperature Range................... –65°C to 150°C
Lead Temperature (Soldering, 10 sec)
MSOP ............................................................... 300°C
PIN CONFIGURATION
TOP VIEW
CTRL
ISN
ISP
VC
16 15 14 13
V
REF
1
PWM 2
SYNC OR
OPENLED
3
SS 4
5
RT
6
SHDN/UVLO
7
INTV
CC
8
V
IN
17
GND
12 FB
11 PWMOUT
10 GATE
9 SENSE
PWMOUT
FB
ISN
ISP
VC
CTRL
V
REF
PWM
1
2
3
4
5
6
7
8
TOP VIEW
16
15
14
13
12
11
10
9
GATE
SENSE
V
IN
INTV
CC
SHDN/UVLO
RT
SS
SYNC OR
OPENLED
17
GND
UD PACKAGE
16-LEAD (3mm
×
3mm) PLASTIC QFN
T
JMAX
= 125°C,
θ
JA
= 68°C/W,
θ
JC
= 4.2°C/W
EXPOSED PAD (PIN 17) IS GND, MUST BE SOLDERED TO PCB
MSE PACKAGE
16-LEAD PLASTIC MSOP
T
JMAX
= 125°C (E, I GRADES), T
JMAX
= 150°C (H, J GRADES),
θ
JA
= 43°C/W,
θ
JC
= 4°C/W
EXPOSED PAD (PIN 17) IS GND, MUST BE SOLDERED TO PCB
ORDER INFORMATION
LEAD FREE FINISH
LT3755EUD#PBF
LT3755IUD#PBF
LT3755EUD-1#PBF
LT3755IUD-1#PBF
LT3755EUD-2#PBF
LT3755IUD-2#PBF
LT3755EMSE#PBF
LT3755IMSE#PBF
LT3755EMSE-1#PBF
LT3755IMSE-1#PBF
LT3755EMSE-2#PBF
LT3755IMSE-2#PBF
LT3755HMSE-2#PBF
LT3755JMSE-2#PBF
TAPE AND REEL
LT3755EUD#TRPBF
LT3755IUD#TRPBF
LT3755EUD-1#TRPBF
LT3755IUD-1#TRPBF
LT3755EUD-2#TRPBF
LT3755IUD-2#TRPBF
LT3755EMSE#TRPBF
LT3755IMSE#TRPBF
LT3755EMSE-1#TRPBF
LT3755IMSE-1#TRPBF
LT3755EMSE-2#TRPBF
LT3755IMSE-2#TRPBF
LT3755HMSE-2#TRPBF
LT3755JMSE-2#TRPBF
PART MARKING*
LDGC
LDGC
LDMS
LDMS
LFJZ
LFJZ
3755
3755
37551
37551
37552
37552
37552
37552
PACKAGE DESCRIPTION
16-Lead (3mm
×
3mm) Plastic QFN
16-Lead (3mm
×
3mm) Plastic QFN
16-Lead (3mm
×
3mm) Plastic QFN
16-Lead (3mm
×
3mm) Plastic QFN
16-Lead (3mm
×
3mm) Plastic QFN
16-Lead (3mm
×
3mm) Plastic QFN
16-Lead Plastic MSOP
16-Lead Plastic MSOP
16-Lead Plastic MSOP
16-Lead Plastic MSOP
16-Lead Plastic MSOP
16-Lead Plastic MSOP
16-Lead Plastic MSOP
16-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 125°C
–40°C to 125°C
–40°C to 125°C
–40°C to 125°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 150°C
Rev. E
2
For more information
www.analog.com
LT3755/LT3755-1/LT3755-2
ORDER INFORMATION
AUTOMOTIVE PRODUCTS**
LEAD FREE FINISH
TAPE AND REEL
LT3755EMSE#WPBF
LT3755EMSE#WTRPBF
LT3755IMSE#WPBF
LT3755IMSE#WTRPBF
PART MARKING*
3755
3755
PACKAGE DESCRIPTION
16-Lead Plastic MSOP
16-Lead Plastic MSOP
TEMPERATURE RANGE
–40°C to 125°C
–40°C to 125°C
LT3755EMSE-1#WPBF
LT3755EMSE-1#WTRPBF 37551
16-Lead Plastic MSOP
–40°C to 125°C
LT3755IMSE-1#WPBF
LT3755IMSE-1#WTRPBF 37551
16-Lead Plastic MSOP
–40°C to 125°C
LT3755EMSE-2#WPBF
LT3755EMSE-2#WTRPBF 37552
16-Lead Plastic MSOP
–40°C to 125°C
LT3755IMSE-2#WPBF
LT3755IMSE-2#WTRPBF 37552
16-Lead Plastic MSOP
–40°C to 125°C
LT3755HMSE-2#WPBF
LT3755HMSE-2#WTRPBF 37552
16-Lead Plastic MSOP
–40°C to 150°C
LT3755JMSE-2#WPBF
LT3755JMSE-2#WTRPBF 37552
16-Lead Plastic MSOP
–40°C to 150°C
Contact the factory for parts specified with wider operating temperature ranges. *The temperature grade is identified by a label on the shipping container.
Tape and reel specifications.
Some packages are available in 500 unit reels through designated sales channels with #TRMPBF suffix.
**Versions
of this part are available with controlled manufacturing to support the quality and reliability requirements of automotive applications. These
models are designated with a #W suffix. Only the automotive grade products shown are available for use in automotive applications. Contact your
local Analog Devices account representative for specific product ordering information and to obtain the specific Automotive Reliability reports for
these models.
ELECTRICAL CHARACTERISTICS
PARAMETER
V
IN
Minimum Operating Voltage
V
IN
Shutdown I
Q
V
IN
Operating I
Q
(Not Switching)
V
REF
Voltage
V
REF
Line Regulation
SENSE Current Limit Threshold
SENSE Input Bias Current
SS Pull-Up Current
Error Amplifier
ISP/ISN Full-Scale Current Sense Threshold
ISP/ISN Full-Scale Current Sense Threshold at CTRL = 0V
CTRL Pin Range for Current Sense Threshold Adjustment
CTRL Input Bias Current
LED Current Sense Amplifier Input Common Mode Range (V
ISN
)
ISP/ISN Short-Circuit Threshold
The
l
denotes the specifications which apply over the full operating
temperature range, otherwise specifications are at T
A
= 25°C. V
IN
= 24V,
SHDN/UVLO
= 24V, CTRL = 2V, PWM = 5V, unless otherwise noted.
CONDITIONS
V
IN
Tied to INTV
CC
SHDN/UVLO
= 0V, PWM = 0V
SHDN/UVLO
= 1.15V, PWM = 0V
PWM = 0V
100µA ≤ I
VREF
≤ 0µA (E, I, H-Grades)
80µA ≤ I
VREF
≤ 0µA (J-Grade only)
4.5V ≤ V
IN
≤ 40V
l
l
l
l
MIN
TYP
0.1
1.4
MAX
4.5
1
5
1.7
2.045
2.045
118
13
103
103
–7
1.1
100
75
200
3
UNITS
V
µA
µA
mA
V
V
%/V
mV
µA
µA
mV
mV
mV
V
nA
V
mV
V
µA
µA
1.965
1.965
98
8
2.00
2.00
0.006
108
40
10
100
100
–9.5
50
Current Out of Pin
Current Out of Pin
FB = 0V, ISP = 48V
J-Grade
CTRL = 0V, FB = 0V, ISP = 48V
l
l
l
96
95.5
–12
0
2.9
115
Current Out of Pin
l
ISN = 0V
l
150
55
0
ISP/ISN Short-Circuit Fault Sensing Common Mode Range (V
ISN
)
ISP/ISN Input Bias Current (Combined)
PWM = 5V (Active), ISP = ISN = 48V
PWM = 0V (Standby), ISP = ISN = 48V
0
0.1
Rev. E
For more information
www.analog.com
3
LT3755/LT3755-1/LT3755-2
ELECTRICAL CHARACTERISTICS
PARAMETER
LED Current Sense Amplifier g
m
VC Output Impedance
VC Standby Input Bias Current
FB Regulation Voltage (V
FB
)
FB Amplifier g
m
FB Pin Input Bias Current
FB Open LED Threshold
FB Overvoltage Threshold
VC Current Mode Gain – (∆V
VC
/∆V
SENSE
)
Oscillator
Switching Frequency
Minimum Off-Time
Linear Regulator
INTV
CC
Regulation Voltage
Dropout (V
IN
– INTV
CC
)
INTV
CC
Undervoltage Lockout
INTV
CC
Current Limit
INTV
CC
Current in Shutdown
Logic Inputs/Outputs
PWM Input High Voltage
PWM Input Low Voltage
PWM Pin Resistance to GND
PWMOUT Output Low (V
OL
)
PWMOUT Output High (V
OH
)
SHDN/UVLO
Threshold Voltage Falling
E-, I-Grades
H-Grade
J-Grade
I
VIN
Drops Below 1µA
SHDN/UVLO
= 1.15V
SHDN/UVLO
= 1.30V
I
OPENLED
= 0.5mA (LT3755 and LT3755-2)
LT3755-1 Only
LT3755-1 Only
LT3755-1 Only
1.5
0.4
30
1.7
2.05
10
l
l
l
l
l
The
l
denotes the specifications which apply over the full operating
temperature range, otherwise specifications are at T
A
= 25°C. V
IN
= 24V,
SHDN/UVLO
= 24V, CTRL = 2V, PWM = 5V, unless otherwise noted.
CONDITIONS
V
(ISP – ISN)
= 100mV
1V < VC < 2V
PWM = 0V
ISP = ISN
J-Grade
FB = V
FB
, ISP = ISN
Current Out of Pin
OPENLED
Falling (LT3755 and LT3755-2)
PWMOUT Falling
V
FB
–
65mV
V
FB
+
50mV
l
l
MIN
TYP
120
15000
MAX
UNITS
µS
kΩ
–20
1.232
1.220
1.215
1.250
1.250
1.250
480
40
V
FB
–
50mV
V
FB
+
60mV
4
20
1.265
1.270
1.275
100
V
FB
–
40mV
V
FB
+
75mV
nA
V
V
V
µS
nA
V
V
V/V
R
T
= 100k
R
T
= 10k
l
90
925
100
1000
170
125
1050
kHz
kHz
ns
7
I
INTVCC
= –10mA, V
IN
= 7V
3.9
29
SHDN/UVLO
= 0V, INTV
CC
= 7V
1.5
7.15
350
4.1
34
8
7.3
4.3
40
12
V
mV
V
mA
µA
V
0.4
45
INTV
CC
–
0.05
1.185
1.175
1.159
1.220
1.245
1.245
1.260
0.4
2.5
100
200
60
0
50
V
kΩ
mV
V
V
V
V
mV
V
µA
nA
mV
kΩ
V
V
SHDN/UVLO
Rising Hysteresis
SHDN/UVLO
Input Low Voltage
SHDN/UVLO
Pin Bias Current Low
SHDN/UVLO
Pin Bias Current High
OPENLED
Output Low (V
OL
)
SYNC Pin Resistance to GND
SYNC Input High
SYNC Input Low
20
Rev. E
4
For more information
www.analog.com
LT3755/LT3755-1/LT3755-2
ELECTRICAL CHARACTERISTICS
PARAMETER
Gate Driver
t
r
GATE Driver Output Rise Time
t
f
GATE Driver Output Fall Time
GATE Output Low (V
OL
)
GATE Output High (V
OH
)
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 LT3755E, LT3755E-1 and LT3755E-2 are 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 LT3755I, LT3755I-1 and LT3755I-2 are
guaranteed to meet performance specifications over the –40°C to 125°C
operating junction temperature range. The LT3755H-2 and LT3577J-2
are guaranteed to meet performance specifications 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.
INTV
CC
–
0.05
Note 3:
For V
IN
below 6V, the
SHDN/UVLO
pin must not exceed V
IN
for
proper operation.
Note 4:
GATE and PWMOUT pins are driven either to GND or INTV
CC
by
internal switches. Do not connect these pins externally to a power supply.
Note 5:
The LT3755 includes overtemperature protection that is intended
to protect the device during momentary overload conditions. Junction
temperature will exceed the maximum operating junction temperature
when overtemperature protection is active. Continuous operating above
the specified maximum operating junction temperature may impair device
reliability.
C
L
= 3300pF
C
L
= 3300pF
35
35
0.05
ns
ns
V
V
The
l
denotes the specifications which apply over the full operating
temperature range, otherwise specifications are at T
A
= 25°C. V
IN
= 24V,
SHDN/UVLO
= 24V, CTRL = 2V, PWM = 5V, unless otherwise noted.
CONDITIONS
MIN
TYP
MAX
UNITS
Rev. E
For more information
www.analog.com
5
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