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| 型号： | LT3598IFE#PBF |
| 厂商： | Linear Technology |
| 文件页数： | 10/24页 |
| 文件大小： | 0K |
| 描述： | IC LED DRVR WHITE BCKLGT 24TSSOP |
| 标准包装： | 62 |
| 恒定电流： | 是 |
| 拓扑： | PWM，升压（升压） |
| 输出数： | 6 |
| 内部驱动器： | 是 |
| 类型 - 主要： | 车载，背光 |
| 类型 - 次要： | 白色 LED |
| 频率： | 200kHz ~ 2.5MHz |
| 电源电压： | 3 V ~ 30 V |
| 输出电压： | 44V |
| 安装类型： | 表面贴装 |
| 封装/外壳： | 24-TSSOP（0.173"，4.40mm）裸露焊盘 |
| 供应商设备封装： | 24-TSSOP 裸露焊盘 |
| 包装： | 管件 |
| 工作温度： | -40°C ~ 125°C |
LT3598
APPLICATIONS INFORMATION
Inductor Selection
Table 1 lists several inductors that work well with the
LT3598, however, there are many other manufacturers and
devices that can be used. Consult each manufacturer for
detailed information on their entire range of parts. Ferrite
core inductors should be used to obtain the best ef?ciency.
Choose an inductor that can handle the necessary peak
current without saturating. Also, ensure that the inductor
has a low DCR (copper wire resistance) to minimize I 2 R
power losses. Values between 4.7μH and 22μH will suf?ce
temperature ranges than other dielectrics. A 4.7μF to 10μF
output capacitor is suf?cient for most high output current
designs. Table 2 lists some suggested manufacturers.
Consult the manufacturers for detailed information on
their entire selection of ceramic parts.
Table 2. Recommended Ceramic Capacitor Manufacturers
Taiyo Yuden 408-573-4150
www.t-yuden.com
AVX 843-448-9411
www.avxcorp.com
for most applications.
Inductor manufacturers specify the maximum current
rating as the current where inductance falls by a given
percentage of its nominal value. An inductor can pass a
current greater than its rated value without damaging it.
Consult each manufacturer to determine how the maximum
Murata
Kemet
United Chemi-Con
770-436-1300
www.murata.com
408-986-0424
www.kemet.com
847-696-2000
www.chemi-con.com
inductor current is measured and how much more current
the inductor can reliably conduct.
Diode Selection
Schottky diodes, with their low forward voltage drop
Table 1. Recommended Inductors
MAX
L DCR
PART (μH) (Ω)
CURRENT
RATING
(A)
VENDOR
and fast switching speed, must be used for all LT3598
applications. Do not use P-N diodes. Table 3 lists several
Schottky diodes that work well. The diode’s average current
rating must exceed the application’s average output current.
B1015AS-100M
#817FY-4R7M
1123AS-4R7M
74454068
74454010
7447745100
CDH74NP-120L
CDH74NP-150L
CDRH6D38-100
IHLP-2525BD-01
10
4.7
4.7
6.8
10
10
12
15
10
10
0.07
0.06
0.12
0.055
0.065
0.12
0.065
0.083
0.038
0.129
2.2
2.26
1.90
2.2
2
1.7
2.45
2.10
2.00
2.5
TOKO
www.toko.com
Würth Electronics
www.we-online.com
Sumida
www.sumida.com
Vishay
The diode’s maximum reverse voltage must exceed the
application’s output voltage. A 2A diode is suf?cient for
most designs. For PWM dimming applications, be aware
of the reverse leakage current of the diode. Lower leakage
current will drain the output capacitor less, allowing for
higher dimming range. The companies below offer Schottky
diodes with high voltage and current ratings.
Table 3. Suggested Diodes
www.vishay.com
MAX
MAX REVERSE
SD25-4R7-R
4.7
0.056
1.83
Cooper
www.cooperet.com
PART
CURRENT
(A)
VOLTAGE
(V)
MANUFACTURER
LPS4018-472ML
4.7
0.200
1.8
Coilcraft
B250A
2
50
Diodes, Inc.
www.coilcraft.com
Capacitor Selection
Low ESR (equivalent series resistance) ceramic capacitors
should be used at the output to minimize the output
B240A
SBR140S3
SBM340, PDS340
HSM150G
HSM150J
SS3H9
2
1
3
1
1
3
40
40
40
50
50
90
www.diodes.com
Microsemi
www.microsemi.com
Vishay
ripple voltage. Use only X5R or X7R dielectrics, as these
www.vishay.com
materials retain their capacitance over wider voltage and
3598fb
10
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相关代理商/技术参数 |
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| LT3598IFETRPBF | 制造商:LINER 制造商全称:Linear Technology 功能描述:6-String 30mA LED Driver with 1.5% Current Matching |
| LT3598IUF#PBF | 功能描述:IC LED DRIVR WHITE BCKLGT 24-QFN RoHS:是 类别:集成电路 (IC) >> PMIC - LED 驱动器 系列:- 标准包装:60 系列:- 恒定电流:- 恒定电压:- 拓扑:线性（LDO），PWM，升压（升压） 输出数:8 内部驱动器:是 类型 - 主要:背光 类型 - 次要:RGB，白色 LED 频率:500kHz ~ 1.5MHz 电源电压:4.75 V ~ 26 V 输出电压:45V 安装类型:* 封装/外壳:* 供应商设备封装:* 包装:* 工作温度:-40°C ~ 85°C |
| LT3598IUF#TRPBF | 功能描述:IC LED DRIVR WHITE BCKLGT 24-QFN RoHS:是 类别:集成电路 (IC) >> PMIC - LED 驱动器 系列:- 标准包装:6,000 系列:- 恒定电流:- 恒定电压:- 拓扑:开路漏极，PWM 输出数:4 内部驱动器:是 类型 - 主要:LED 闪烁器 类型 - 次要:- 频率:400kHz 电源电压:2.3 V ~ 5.5 V 输出电压:- 安装类型:表面贴装 封装/外壳:8-VFDFN 裸露焊盘 供应商设备封装:8-HVSON 包装:带卷 (TR) 工作温度:-40°C ~ 85°C 其它名称:935286881118PCA9553TK/02-TPCA9553TK/02-T-ND |
| LT3598IUFPBF | 制造商:LINER 制造商全称:Linear Technology 功能描述:6-String 30mA LED Driver with 1.5% Current Matching |
| LT3598IUF-PBF | 制造商:LINER 制造商全称:Linear Technology 功能描述:6-String 30mA LED Driver with 1.5% Current Matching |
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