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参数资料
| 型号： | LT3579EFE-1#PBF |
| 厂商： | LINEAR TECHNOLOGY CORP |
| 元件分类： | 稳压器 |
| 英文描述： | SWITCHING REGULATOR, PDSO20 |
| 封装： | 4.40 MM, LEAD FREE, PLASTIC, TSSOP-20 |
| 文件页数： | 1/40页 |
| 文件大小： | 503K |
| 代理商： | LT3579EFE-1#PBF |
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LT3579/LT3579-1
1
35791f
Typical applicaTion
DescripTion
6A Boost/Inverting
DC/DC Converter with Fault Protection
The LT3579 is a PWM DC/DC converter with built-in fault
protection features to aid in protecting against output shorts,
input/output overvoltage, and overtemperature conditions.
Thepartconsistsofa42Vmasterswitch,anda42Vslaveswitch
that can be tied together for a total current limit of 6A.
The LT3579 is ideal for many local power supply designs. It
canbeeasilyconfiguredinBoost,SEPIC,Inverting,orFlyback
configurations, and is capable of generating 12V at 1.7A, or
–12V at 1.2A from a 5V input. In addition, the LT3579’s slave
switch allows the part to be configured in high voltage, high
power charge pump topologies that are very efficient and
require fewer components than traditional circuits.
TheLT3579’sswitchingfrequencyrangecanbesetbetween
200kHz and 2.5MHz. The part may be clocked internally at
a frequency set by the resistor from the RT pin to ground,
or it may be synchronized to an external clock. A buffered
version of the clock signal is driven out of the CLKOUT
pin, and may be used to synchronize other compatible
switching regulator ICs to the LT3579.
TheLT3579alsofeaturesinnovativeSHDNpincircuitrythat
allows for slowly varying input signals and an adjustable
undervoltage lockout function. Additional features such
as frequency foldback and soft-start are integrated. The
LT3579 is available in 20-lead TSSOP and 20-pin 4mm
×
5mm QFN packages.
1MHz, 5V to 12V Boost Converter with Output Short Circuit Protection
FeaTures
applicaTions
n
6A, 42V Combined Power Switch
n
Output Short Circuit Protection
n
Wide Input Range: 2.5V to 16V Operating,
40V Maximum Transient
n
LT3579-1: Dual-Phase Capable
n
Master/Slave (3.4A/2.6A) Switch Design
n
User Configurable Undervoltage Lockout
n
Easily Configurable as a Boost, SEPIC, Inverting, or
Flyback Converter
n
Low VCESAT Switch: 250mV at 5.5A (Typical)
n
Can be Synchronized to External Clock
n
Can Synchronize other Switching Regulators
n
High Gain SHDN Pin Accepts Slowly Varying Input
Signals
n
20-Lead TSSOP and 20-Pin 4mm
× 5mm QFN
Packages
n
Local Power Supply
n
Vacuum Flourescent Display (VFD) Bias Supplies
n
TFT-LCD Bias Supplies
n
Automotive Engine Control Unit (ECU) 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.
Protected by U.S. Patents, including 7579816.
VIN
5V
200k
100k
86.6k
22F
2.2H
SW1 SW2
FB
GATE
VC
CLKOUT
VIN
RT
SYNC GND
SS
FAULT
SHDN
47pF
TEMPERATURE
MONITOR
LT3579
130k
2.2nF
10F
VOUT
12V
1.7A
6.3k
8k
0.1F
10F
35791 TA01
Efficiency and Power Loss
LOAD CURRENT (A)
0
20
EFFICIENCY
(%)
POWER
LOSS
(W)
80
90
70
60
50
40
30
100
0
2.4
2.8
2.0
1.6
1.2
0.8
0.4
3.2
0.25
1 1.25 1.5 1.75 2
0.5
35791 TA02
0.75
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相关代理商/技术参数 |
参数描述 |
|---|---|
| LT3579EFE-1-TRPBF | 制造商:LINER 制造商全称:Linear Technology 功能描述:6A Boost/Inverting DC/DC Converter with Fault Protection |
| LT3579EFE-PBF | 制造商:LINER 制造商全称:Linear Technology 功能描述:6A Boost/Inverting DC/DC Converter with Fault Protection |
| LT3579EFE-TRPBF | 制造商:LINER 制造商全称:Linear Technology 功能描述:6A Boost/Inverting DC/DC Converter with Fault Protection |
| LT3579EUFD#PBF | 功能描述:IC REG MULTI CONFIG SYNC 20QFN 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:2,500 系列:- 类型:降压（降压） 输出类型:固定 输出数:1 输出电压:1.2V，1.5V，1.8V，2.5V 输入电压:2.7 V ~ 20 V PWM 型:- 频率 - 开关:- 电流 - 输出:50mA 同步整流器:是 工作温度:-40°C ~ 125°C 安装类型:表面贴装 封装/外壳:10-TFSOP，10-MSOP（0.118"，3.00mm 宽）裸露焊盘 包装:带卷 (TR) 供应商设备封装:10-MSOP 裸露焊盘 |
| LT3579EUFD#TRPBF | 功能描述:IC REG MULTI CONFIG SYNC 20QFN 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:2,500 系列:- 类型:降压（降压） 输出类型:固定 输出数:1 输出电压:1.2V，1.5V，1.8V，2.5V 输入电压:2.7 V ~ 20 V PWM 型:- 频率 - 开关:- 电流 - 输出:50mA 同步整流器:是 工作温度:-40°C ~ 125°C 安装类型:表面贴装 封装/外壳:10-TFSOP，10-MSOP（0.118"，3.00mm 宽）裸露焊盘 包装:带卷 (TR) 供应商设备封装:10-MSOP 裸露焊盘 |
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