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| 型号： | LT3479EDE#PBF |
| 厂商： | Linear Technology |
| 文件页数： | 1/20页 |
| 文件大小： | 0K |
| 描述： | IC REG BOOST INV ADJ 3A 14DFN |
| 标准包装： | 91 |
| 类型： | 升压（升压），反相 |
| 输出类型： | 可调式 |
| 输出数： | 1 |
| 输出电压： | 1.24 V ~ 42 V |
| 输入电压： | 2.5 V ~ 24 V |
| PWM 型： | 电流模式 |
| 频率 - 开关： | 200kHz ~ 3.5MHz |
| 电流 - 输出： | 3A |
| 同步整流器： | 无 |
| 工作温度： | -40°C ~ 85°C |
| 安装类型： | 表面贴装 |
| 封装/外壳： | 14-WFDFN 裸露焊盘 |
| 包装： | 管件 |
| 供应商设备封装： | 14-DFN-EP（4x3） |
| 产品目录页面： | 1331 (CN2011-ZH PDF) |
LT3479
3A, Full Featured DC/DC
Converter with Soft-Start
and Inrush Current Protection
FEATURES
DESCRIPTION
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Wide Input Voltage Range: 2.5V to 24V
3A, 42V Internal Switch
High Ef?ciency Power Conversion: Up to 89%
Soft-Start
Frequency Set by External Resistor: 200kHz to
3.5MHz
Protection Against Input Short Circuits and
Hot Plugging
Low V CESAT Switch: 0.3V at 2.5A (Typical)
Capable of Positive and Negative Outputs
Available in Thermally Enhanced 14-Lead
The LT ? 3479 is a current mode, ?xed frequency step-up
DC/DC converter with an internal 3A, 42V switch. Ef?cien-
cies of up to 89% can be achieved in typical applications. It
features a programmable soft-start function to limit induc-
tor current during start-up and inrush current protection
to protect the LT3479 during shorts and line transients.
Both inputs of the error ampli?er are available to the user
allowing positive and negative output voltages. Through
an external resistor, the user can program the switch-
ing frequency from 200kHz to 3.5MHz. The low pro?le
(0.75mm) 14-pin, 4mm × 3mm DFN package provides
(4mm × 3mm) DFN and 16-Lead TSSOP Packages
APPLICATIONS
excellent thermal performance in a small footprint. The
LT3479 is also available in a thermally enhanced 16-pin
TSSOP package.
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High Power LED Driver
DSL Modems
Distributed Power
L , LT, LTC, LTM, Linear Technology and the Linear logo are registered trademarks of Linear
Technology Corporation. All other trademarks are the property of their respective owners.
TYPICAL APPLICATION
5V to 12V Boost Converter
5V to 12V Ef?ciency
V IN
5V
2.2μF
4.7μH
200k
10μF
V OUT
12V
0.8A
90
85
V IN V S L
SW
SHDN
FBN
23.2k
80
10nF
SS
LT3479
V REF
FBP
75
70
R T
GND
17.8k
V C
10k
65
2.2nF
60
0
0.2
0.4
0.6
0.8
3479 TA01
I OUT (A)
3479 TA02
3479fc
1
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相关代理商/技术参数 |
参数描述 |
|---|---|
| LT3479EDE-TR | 制造商:LINER 制造商全称:Linear Technology 功能描述:3A, Full Featured DC/DC Converter with Soft-Start and Inrush Current Protection |
| LT3479EDE-TRPBF | 制造商:LINER 制造商全称:Linear Technology 功能描述:3A, Full Featured DC/DC Converter with Soft-Start and Inrush Current Protection |
| LT3479EFE | 制造商:Linear Technology 功能描述:Conv DC-DC Single Step Up 2.5V to 24V 16-Pin TSSOP EP |
| LT3479EFE#PBF | 功能描述:IC REG BOOST INV ADJ 3A 16TSSOP RoHS:是 类别:集成电路 (IC) >> PMIC - 稳压器 - DC DC 开关稳压器 系列:- 标准包装:250 系列:- 类型:降压（降压） 输出类型:固定 输出数:1 输出电压:1.2V 输入电压:2.05 V ~ 6 V PWM 型:电压模式 频率 - 开关:2MHz 电流 - 输出:500mA 同步整流器:是 工作温度:-40°C ~ 85°C 安装类型:表面贴装 封装/外壳:6-UFDFN 包装:带卷 (TR) 供应商设备封装:6-SON（1.45x1） 产品目录页面:1032 (CN2011-ZH PDF) 其它名称:296-25628-2 |
| LT3479EFE#TR | 制造商:Linear Technology 功能描述:Conv DC-DC Single Step Up 2.5V to 24V 16-Pin TSSOP EP T/R |
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