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参数资料
| 型号： | LT3599IUH#PBF |
| 厂商： | Linear Technology |
| 文件页数： | 1/26页 |
| 文件大小： | 0K |
| 描述： | IC LED DRIVR WHITE BCKLGT 32-QFN |
| 标准包装： | 73 |
| 恒定电流： | 是 |
| 拓扑： | PWM，升压（升压） |
| 输出数： | 4 |
| 内部驱动器： | 是 |
| 类型 - 主要： | 车载，背光 |
| 类型 - 次要： | 白色 LED |
| 频率： | 200kHz ~ 2.1MHz |
| 电源电压： | 2.7 V ~ 30 V |
| 输出电压： | 44V |
| 安装类型： | 表面贴装 |
| 封装/外壳： | 32-WFQFN 裸露焊盘 |
| 供应商设备封装： | 32-QFN |
| 包装： | 管件 |
| 工作温度： | -40°C ~ 125°C |
LT3599
4-Channel 120mA LED Driver
with ±1.5% Current Matching
FEATURES
DESCRIPTION
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True Color PWM TM Dimming Ratio Up to 3000:1
Drives Four Strings of LEDs at Up to 120mA
±1.5% Accurate LED Current Matching
Wide Input Voltage Range: 3.1V to 30V
Output Voltage Up to 44V
Regulates LED Current Even When V IN > V OUT
Disconnects LEDs in Shutdown
Programmable Maximum V OUT (Regulated)
Open/Short LED Protection and Fault Flags
Programmable LED Current Derating
Adjustable Frequency: 200kHz to 2.1MHz
Synchronizable to an External Clock
Analog Dimming Up to 20:1
Programmable Input UVLO with Hysteresis
Thermally Enhanced 32-Pin (5mm × 5mm) QFN and
28-Pin TSSOP Packages
The LT ? 3599 is a ?xed frequency 2A step-up DC/DC
converter designed to drive four strings of 120mA LEDs
up to a 44V output voltage. The switching frequency
is programmable from 200kHz to 2.1MHz through an
external resistor.
LED dimming can be achieved with analog dimming on
the CTRL pin, and with pulse width modulation dimming
on the PWM pin. The LT3599 accurately regulates LED
current even when the input voltage is higher than the
LED output voltage.
Additional features include programmable LED current
derating, switching frequency synchronization to an ex-
ternal clock, LED string disable control, OPENLED alert
pin, SHORTLED alert pins and programmable maximum
output voltage when all LED strings are disconnected.
Automotive Navigation TFT LCD Displays
Desktop and Notebook TFT LCD Displays
APPLICATIONS
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TYPICAL APPLICATION
90% Ef?cient 12W LED Driver
The LT3599 is available in the thermally enhanced 32-pin
(5mm × 5mm) QFN and 28-pin TSSOP packages.
L , LT, LTC, LTM, Linear Technology and the Linear logo are registered trademarks of Linear
Technology Corporation. True Color PWM is a trademark of Linear Technology Corporation.
All other trademarks are the property of their respective owners. Protected by U.S. Patents,
including 7199560.
PV IN
8V TO 24V
10μH
3.3μF
V IN
V IN
V IN
3.1V TO 5.5V
1μF
100k
V IN
SW
V OUT
V O_SW
4.7μF
2
1.5
LED Current Matching
ALL FOUR LED STRINGS
200k
31.6k
33.2k
100k
53.6k
PWM
53.6k
80.6k
SHORTLED
OPENLED
SHDN /UVLO
PWM
SYNC
LT3599
CTRL
RT
V REF
T SET
FB
LED1
LED2
1M
31.6k
1.0
0.5
0
–0.5
–1.0
DISABLE4
I SET SS
LED3
LED4
GND V C
80mA PER STRING
3599 TA01a
–1.5
–50 –25
0
25 50 75 100 125 150
TEMPERATURE (°C)
3599 TA01b
16.5k
47nF
10k
100pF
2.2nF
3599fe
1
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相关代理商/技术参数 |
参数描述 |
|---|---|
| LT3599IUHTRPBF | 制造商:LINER 制造商全称:Linear Technology 功能描述:4-Channel 120mA LED Driver with ±1.5% Current Matching |
| LT3599IUH-TRPBF | 制造商:LINER 制造商全称:Linear Technology 功能描述:4-Channel 120mA LED Driver with ±1.5% Current Matching |
| LT360035 | 制造商:Eaton Corporation 功能描述:LG 3 POLE 600A LSG ELECTRONIC TRIP UNIT |
| LT3600T | 制造商:Eaton Corporation 功能描述:TYPE LT TRIP UNIT ONLY 3P 600A 600VAC MAX |
| LT360Z | 制造商:SEOUL 制造商全称:Seoul Semiconductor 功能描述:GREEN OVAL LAMP LED |
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