Storage Temperature Range .................. –65°C to 150°C
Lead Temperature (Soldering, sec) (Note 5) ......... 300°C
pin conFiguraTion
SW
V
OUT
V
O_SW
LED1
LED2
LED3
LED4
DISABLE4
SHORTLED
1
2
3
4
5
6
7
8
9
29
28 V
IN
VIN
SW
NC
NC
NC
27
SHDN/UVLO
26 NC
25 GND
24 V
REF
23 SS
22 RT
21 PWM
20 NC
19 SYNC
18 NC
17 T
SET
16 FB
15 V
C
V
OUT
1
V
O_SW
2
LED1 3
LED2 4
LED3 5
LED4 6
DISABLE4 7
SHORTLED
8
9 10 11 12 13 14 15 16
I
SET
CTRL
V
C
FB
OPENLED
T
SET
NC
NC
33
SHDN/UVLO
TOP VIEW
TOP VIEW
NC
32 31 30 29 28 27 26 25
24 NC
23 NC
22 GND
21 V
REF
20 SS
19 RT
18 PWM
17 SYNC
NC 10
OPENLED
11
NC 12
I
SET
13
CTRL 14
FE PACKAGE
28-LEAD PLASTIC TSSOP
T
JMAX
= 150°C,
θ
JA
= 28°C/W ,
θ
JC
= 10°C/W
EXPOSED PAD (PIN 29) IS GND, MUST BE SOLDERED TO PCB
UH PACKAGE
32-LEAD (5mm
×
5mm) PLASTIC QFN
T
JMAX
= 125°C,
θ
JA
= 34°C/W
EXPOSED PAD (PIN 33) IS GND, MUST BE SOLDERED TO PCB
orDer inForMaTion
LEAD FREE FINISH
LT3599EFE#PBF
LT3599IFE#PBF
LT3599HFE#PBF
LT3599EUH#PBF
LT3599IUH#PBF
TAPE AND REEL
LT3599EFE#TRPBF
LT3599IFE#TRPBF
LT3599HFE#TRPBF
LT3599EUH#TRPBF
LT3599IUH#TRPBF
PART MARKING*
LT3599FE
LT3599FE
LT3599FE
3599
3599
PACKAGE DESCRIPTION
28-Lead Plastic TSSOP
28-Lead Plastic TSSOP
28-Lead Plastic TSSOP
32-Lead (5mm
×
5mm) Plastic QFN
32-Lead (5mm
×
5mm) Plastic QFN
TEMPERATURE RANGE
–40°C to 125°C
–40°C to 125°C
–40°C to 150°C
–40°C to 125°C
–40°C to 125°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/.
Some packages are available in 500 unit reels through
designated sales channels with #TRMPBF suffix.
NC
2
3599ff
For more information
www.linear.com/LT3599
LT3599
elecTrical characTerisTics
PARAMETER
Minimum Operating Voltage
Maximum Operating Voltage
Reference Voltage V
REF
Reference Voltage Line Regulation
Maximum V
REF
Pin Current
V
REF
Load Regulation
Feedback Voltage
FB Pin Bias Current
FB Error Amp Transconductance
FB Error Amp Voltage Gain
Current Loop Amp Transconductance
Current Loop Amp Voltage Gain
V
C
Source Current (Out of Pin)
V
C
Sink Current (OVP Mode)
Quiescent Current
Quiescent Current in Shutdown
LED Current
LED String Current Matching
LED Open Detection Threshold (V
LED
–GND)
LED Short Detection Threshold (V
OUT
–V
LED
)
LED Regulation Voltage
LED1-4 Leakage Current
CTRL Pin Bias Current
Switching Frequency
V
LED1-4
= 45V
V
CTRL
= 0.8V (Note 3)
R
T
= 324k
R
T
= 53.6k
R
T
= 20k
R
T
= 324k
R
T
= 53.6k
R
T
= 20k
(Note 4)
I
SW
= 0.5A
V
SW
= 45V, FB = 1.3V
Shutdown
Rising
SHDN
= V
SD_UVLO
– 50mV
SHDN
= V
SD_UVLO
+ 50mV
SS = 1V (Note 3)
0.4
0.3
1.28
2.5
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
= 5V, V
SHDN
= 5V, unless otherwise noted. (Note 2)
CONDITIONS
l
l
MIN
TYP
2.7
MAX
3.1
30
1.24
1.25
0.03
100
UNITS
V
V
V
V
%/V
µA
mV
V
nA
µmhos
V/V
µmhos
V/V
µA
µA
I(V
REF
) = 0µA
l
1.21
1.20
1.227
0.01
1
I(V
REF
) = 0µA, 3.1V < V
IN
< 30V
(Note 3)
0 < I(V
REF
) ≤ 100µA (Max)
l
1.196
1.223
100
200
210
50
50
1.250
250
(Note 3)
∆I
= 5µA
LED1-4 = 0.4V, FB = 1V, V
C
= 1.5V
LED1-4 = 0.4V, FB = 1.5V, V
C
= 1.5V
V
SHDN
= 5V, PWM = 0V, Not Switching, V
C
= 0.7V
V
SHDN
= 0V
R
ISET
= 13.3k
100mA LED Current
FB > 1.25V
0.8
l
8
15
3
0
96
99
±0.25
0.3
1.5
0.77
0.1
100
176
0.9
1.82
97.7
88.5
77
2
198
1
2.06
595
98.6
93
86
2.5
0.10
0.2
0.7
1.36
4
0
11
1
5
0.95
1.44
5.5
3
1
200
220
1.1
2.3
4.8
1
102
±1.5
0.4
2.2
mA
µA
mA
%
V
V
V
µA
nA
kHz
MHz
MHz
mV
%
%
%
A
V
µA
V
V
µA
µA
µA
V
V
T
SET
Voltage
Maximum Switch Duty Cycle
Switch Current Limit
Switch V
CESAT
Switch Leakage Current
SHDN/UVLO
Pin Threshold (V
SD_SHDN
)
SHDN/UVLO
Pin Threshold (V
SD_ UVLO
)
SHDN/UVLO
Pin Hysteresis Current
Soft-Start Current
PWM Input High Threshold
PWM Input Low Threshold
For more information
www.linear.com/LT3599
3
3599ff
LT3599
The
l
denotes the specifications which apply over the full operating
temperature range, otherwise specifications are at T
A
= 25°C. V
IN
= 5V, V
SHDN
= 5V, unless otherwise noted. (Note 2)
PARAMETER
PWM Pin Bias Current
SYNC Input High Threshold
SYNC Input Low Threshold
SYNC Pin Bias Current
V
O_SW
Switch Resistance
OPENLED
Pull-Down Current
SHORTLED
Pull-Down Current
DISABLE4 Input High Threshold
DISABLE4 Input Low Threshold
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 LT3599E 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
LT3599I is guaranteed over the full –40°C to 125°C operating junction
0.4
PWM = 5V; LEDx < 0.2V,
OPENLED
= 0.3V
PWM = 5V,
SHORTLED
= 0.3V
1
1
1.15
SYNC = 0V
SYNC = 3.3V
0.8
0.1
0.1
1
1
1000
CONDITIONS
PWM = 3.3V
MIN
TYP
0.1
MAX
2
2
UNITS
µA
V
V
µA
µA
Ω
mA
mA
V
V
elecTrical characTerisTics
temperature range. The LT3599HFE is guaranteed over the full –40°C to
150°C operating temperature range. High junction temperatures degrade
operating lifetimes. Operating lifetime is derated at junction temperatures
greater than 125°C.
Note 3:
Current flows out of pin.
Note 4:
Current limit guaranteed by design and/or correlation to static test.
Current limit is independent of duty cycle and is guaranteed by design.
I need to use the effective value of current. I downloaded a flyback transformer calculation table from the Internet, but I don't understand how the secondary peak current is obtained from the output ...
Made in Germany, model LA7708, supports ARM series MCU, C166 MCU, Janues MCU, etc., comes with ARM7 JTAG debug header, if needed, please contact: 13713676870, Mr. Zhang....
The serial digital tube display module uses the MAX7219 chip to control the 8-bit 7-segment digital tube. It integrates a B-type BCD code encoding multi-channel scanning circuit and segment word drive...
When I create a package with allegro, the bit number cannot be loaded. I have clearly added the bit number and tried many times, but it still shows that there is no bit number. The following error mes...
[table=98%] [tr][td]I want to make an LCD module with STM32 driving mipi interface, with a resolution of 1280X720. At the same time, TP can also be used normally. All module information can be provide...
How do you know if a machine is operating properly? The answer: by leveraging deep learning to detect anomalies in routine vibration data from industrial machines. Anomaly detection has many uses, ...[Details]
Some time ago, I attended the 4th Energy Chemistry Forum of the Chinese Chemical Society and learned about high-energy-density and high-safety batteries. I would like to summarize and share this wi...[Details]
Current Development Status of DVR Market
A DVR, or digital video recorder, uses a hard disk for recording, unlike traditional analog video recorders. It's often called a DVR because it's a com...[Details]
Limited vocabulary recognition
According to the number of characters, words or short sentences in the vocabulary, it can be roughly divided into: less than 100 is small vocabulary; 100-1000 is...[Details]
White light LEDs are voltage-sensitive devices. In actual operation, their upper limit is 20mA. However, the current often increases due to various reasons during use. If no protective measures are...[Details]
On August 22, Lantu Motors officially launched its Lanhai Intelligent Hybrid technology via an online livestream. This intelligent hybrid technology, which integrates a full-range 800V high-voltage...[Details]
The Automotive Testing and Quality Assurance Expo (ATE 2025) will open on August 27th. At the expo, Rohde & Schwarz (R&S) will showcase six automotive testing solutions, themed "Intelligently Drivi...[Details]
In June 2014, the Ministry of Industry and Information Technology issued 4G FD-LTE licenses to China Unicom and China Telecom. Together with the 4G TD-LTE licenses issued to China Mobile, China Uni...[Details]
A human-machine interface (HMI) refers to the platform used by people to operate a PLC. This platform provides an interface between programs and humans, serving as a medium for information transmis...[Details]
As the range of electric vehicles continues to increase, driving electric vehicles for long-distance travel has become a trend. For high-speed travel, how much impact will high-speed driving of ele...[Details]
On August 21, according to a report by Korean media SEDaily yesterday, according to semiconductor industry sources, the HBM4 samples provided by Samsung to Nvidia last month have passed initial tes...[Details]
Analog Devices held a third-quarter fiscal 2025 earnings conference call. Vincent T. Roche, CEO and Chairman of the Board, and Richard C. Puccio, Executive Vice President and Chief Financial Office...[Details]
Qiangmao, your trusted semiconductor solutions partner, sincerely invites you to visit Electronics India 2025, South Asia's leading trade show for electronic components, systems, applications...[Details]
On August 18th, China's largest expressway
charging station,
the G25 Changshen Expressway Tonglu Service Area (South Area), officially opened and launched its integrated solar-storage-charg...[Details]
I believe everyone has heard of memory. If your computer is slow, your experts may recommend upgrading it to a larger capacity. But what exactly is computer memory used for? Why does memory capacit...[Details]
Analog electronics
京公网安备 11010802033920号
EEWORLD
