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参数资料
| 型号： | LT3645IUD#TRPBF |
| 厂商： | LINEAR TECHNOLOGY CORP |
| 元件分类： | 稳压器 |
| 英文描述： | 1.25 A SWITCHING REGULATOR, 825 kHz SWITCHING FREQ-MAX, PQCC16 |
| 封装： | 3 X 3 MM, LEAD FREE, PLASTIC, MO-220WEED-2, QFN-16 |
| 文件页数： | 1/24页 |
| 文件大小： | 296K |
| 代理商： | LT3645IUD#TRPBF |
LT3645
1
3645f
LOAD CURRENT (mA)
0
100
50
EFFICIENCY
(%)
60
70
80
90
200
300
3645 TA01b
400
500
VOUT = 3.3V
VIN = 12V
VOUT = 5V
TYPICAL APPLICATION
FEATURES
DESCRIPTION
36V 500mA Step-Down
Regulator and 200mA LDO
The LT3645 is a dual output regulator combining a 500mA
buck regulator and a 200mA low dropout linear regula-
tor (LDO). The wide input voltage range of 3.6V to 36V
makes the LT3645 suitable for regulating power from a
wide variety of sources, including 24V industrial supplies
and automotive batteries. Its high operating frequency
allows the use of tiny, low cost inductors and capacitors,
resulting in a very small solution.
Cycle-by-cycle current limit and frequency foldback pro-
vide protection against shorted outputs. Soft-start and
frequency foldback eliminate input current surge during
start-up.
The linear regulator operates from the VCC2 pin at voltages
down to 1.2V. It supplies 200mA of output current with a
typical dropout voltage of 310mV.
Other features of the LT3645 include a <2μA shutdown,
short circuit protection, soft-start and thermal shutdown.
The LT3645 is available in the thermally enhanced 16-lead
(3mm × 3mm) QFN package, or a 12-lead MSE package.
3.3V/5V Step-Down Converter
APPLICATIONS
n Automotive CMOS Image Sensors
n Industrial/Automotive Micro-Controller Supply
L, LT, LTC, LTM, Linear Technology, Burst Mode and the Linear logo are registered trademarks
of Linear Technology Corporation. All other trademarks are the property of their respective
owners.
n Wide Input Range:
Operation from 3.6V to 36V
Overvoltage Lockout Protects Circuit Through
55V Transients on Input
n 500mA Output Current Switching Regulator
n High Switching Frequency: 750kHz
n 200mA Low Dropout Linear Regulator
1.2V to 16V Input; 0.8V to 8V Output
310mV Dropout Voltage VCC2 to OUT2
n Precision Programmable Undervoltage Lockout
n Short-Circuit Robust
n Internal Soft-Start
n <2μA Shutdown Current
n Small Thermally Enhanced 16-Lead (3mm × 3mm)
QFN and 12-Lead MSE Packages
Buck Regulator Efciency
1μF
3645 TA01a
PGOOD
6.2V TO 36V
GND
SW
DA
FB
FB2
EN2
VCC2
VIN
EN/UVLO
NPG
OUT2
10μF
5V
300mA
3.3V
200mA
15μH
52.3k
31.6k
10k
BOOST
LT3645
2.2μF
0.1μF
ON OFF
相关PDF资料 |
PDF描述 |
|---|---|
| LT3645IUD#PBF | 1.25 A SWITCHING REGULATOR, 825 kHz SWITCHING FREQ-MAX, PQCC16 |
| LT3645EUD#TRPBF | 1.25 A SWITCHING REGULATOR, 825 kHz SWITCHING FREQ-MAX, PQCC16 |
| LT3645EMSE#TRPBF | 1.25 A SWITCHING REGULATOR, 825 kHz SWITCHING FREQ-MAX, PDSO12 |
| LT3651IUHE-4.2#PBF | BATTERY CHARGE CONTROLLER, 1100 kHz SWITCHING FREQ-MAX, PQCC36 |
| LT3651IUHE-4.2#TRPBF | BATTERY CHARGE CONTROLLER, 1100 kHz SWITCHING FREQ-MAX, PQCC36 |
相关代理商/技术参数 |
参数描述 |
|---|---|
| LT3650 | 制造商:LINER 制造商全称:Linear Technology 功能描述:High Voltage High Current Controller for Battery Charging and Power Management |
| LT3650-4.1 | 制造商:LINER 制造商全称:Linear Technology 功能描述:High Voltage 2 Amp Monolithic Li-Ion Battery Charger |
| LT3650-4.2 | 制造商:LINER 制造商全称:Linear Technology 功能描述:High Voltage 2 Amp Monolithic Li-Ion Battery Charger |
| LT3650EDD-4.1 | 制造商:LINER 制造商全称:Linear Technology 功能描述:High Voltage 2 Amp Monolithic Li-Ion Battery Charger |
| LT3650EDD-4.1#PBF | 功能描述:IC CHARGER LI-ION 2A 12-DFN RoHS:是 类别:集成电路 (IC) >> PMIC - 电池管理 系列:- 其它有关文件:STC3100 View All Specifications 特色产品:STC3100 - Battery Monitor IC 标准包装:4,000 系列:- 功能:燃料，电量检测计/监控器 电池化学:锂离子（Li-Ion） 电源电压:2.7 V ~ 5.5 V 工作温度:-40°C ~ 85°C 安装类型:表面贴装 封装/外壳:8-TSSOP，8-MSOP（0.118"，3.00mm 宽） 供应商设备封装:8-MiniSO 包装:带卷 (TR) 其它名称:497-10526-2 |
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