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LTC3458LEDE#TRPBF PDF预览

LTC3458LEDE#TRPBF

更新时间: 2024-11-19 19:54:59
品牌 Logo 应用领域
凌特 - Linear 开关光电二极管
页数 文件大小 规格书
16页 362K
描述
LTC3458L - 1.7A, 1.5MHz Synchronous Step-Up DC/DC Converter with Output Disconnect; Package: DFN; Pins: 12; Temperature Range: -40°C to 85°C

LTC3458LEDE#TRPBF 技术参数

是否Rohs认证: 符合生命周期:Transferred
零件包装代码:DFN包装说明:HVSON, SOLCC12,.12,20
针数:12Reach Compliance Code:compliant
ECCN代码:EAR99HTS代码:8542.39.00.01
风险等级:5.2模拟集成电路 - 其他类型:SWITCHING REGULATOR
控制模式:CURRENT-MODE控制技术:PULSE WIDTH MODULATION
最大输入电压:6 V最小输入电压:1.5 V
标称输入电压:3.3 VJESD-30 代码:R-PDSO-N12
JESD-609代码:e3长度:4 mm
湿度敏感等级:1功能数量:1
端子数量:12最高工作温度:70 °C
最低工作温度:最大输出电流:2.1 A
封装主体材料:PLASTIC/EPOXY封装代码:HVSON
封装等效代码:SOLCC12,.12,20封装形状:RECTANGULAR
封装形式:SMALL OUTLINE, HEAT SINK/SLUG, VERY THIN PROFILE峰值回流温度(摄氏度):260
认证状态:Not Qualified座面最大高度:0.8 mm
子类别:Switching Regulator or Controllers表面贴装:YES
切换器配置:BOOST最大切换频率:1500 kHz
技术:CMOS温度等级:COMMERCIAL
端子面层:Matte Tin (Sn)端子形式:NO LEAD
端子节距:0.5 mm端子位置:DUAL
处于峰值回流温度下的最长时间:30宽度:3 mm
Base Number Matches:1

LTC3458LEDE#TRPBF 数据手册

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LTC3458L  
1.7A, 1.5MHz Synchronous  
Step-Up DC/DC Converter  
with Output Disconnect  
U
FEATURES  
DESCRIPTIO  
The LTC®3458L is a high efficiency, current mode, fixed  
frequency, step up DC/DC converter with true output  
disconnect and inrush current limiting. The LTC3458L is  
rated for up to 6V output and includes a 0.2Ω N-channel  
MOSFET switch and a 0.3Ω P-channel MOSFET synchro-  
nous rectifier. The LTC3458L is well suited for battery  
powered applications and includes programmable output  
voltage, switching frequency and loop compensation. The  
oscillator frequency can be set up to 1.5MHz or synchro-  
nized to an external clock.  
High Efficiency: Up to 95%  
Inrush Current Limiting and Output Disconnect  
Programmable Output Voltages up to 6V  
1.5V to 6V Input Range  
Programmable/Synchronizable Fixed Frequency  
Operation up to 1.5MHz  
Programmable Automatic Burst Mode® Operation  
Current Mode Control with Programmable Soft-Start  
Period and Peak Current Limit  
0.2Ω N-Channel and 0.3Ω P-Channel Switches  
Ultralow Quiescent Currents: 12μA Sleep, <1μA in  
Quiescent current is only 12μA during Burst Mode opera-  
tion maximizing battery life in portable applications. The  
BurstModecurrentthreshold,peakcurrentlimit,andsoft-  
start are externally programmable. Other features include  
<1μA shutdown current, antiringing control, and thermal  
limit. TheLTC3458Lisavailableinalowprofile(0.75mm),  
4mm × 3mm 12-pin DFN package.  
Shutdown  
12-Pin 4mm × 3mm Thermally Enhanced DFN  
Package  
U
APPLICATIO S  
Point-of-Load Regulators  
USB VBUS Power  
, LT, LTC and LTM are registered trademarks of Linear Technology Corporation. All  
other trademarks are the property of their respective owners. Burst Mode is a registered  
trademark of Linear Technology Corporation. Protected by U.S. Patents including 5481178,  
6580258, 6304066, 6127815, 6498466, 6611131.  
Portable GPS  
MP3 Players  
U
TYPICAL APPLICATIO  
Li-Ion to 5V at 1MHz  
7.4μH  
Li-Ion to 5VOUT  
100  
95  
90  
85  
80  
75  
70  
65  
60  
1000  
100  
10  
SW  
V
IN  
Li Ion  
3.1V TO 4.2V  
LTC3458L  
2.2μF  
4.2V  
IN  
V
OUT  
V
GND/PGND  
SHDN  
5V  
OUT  
FB  
3.1V  
IN  
750mA  
10pF  
3.6V  
IN  
1M  
ON OFF  
COMP  
SS  
SYNC  
POWER  
LOSS  
324k  
0.01μF  
33k  
1
R
T
22μF  
X5R  
0.01μF  
10pF  
BURST  
I
LIM  
0.1  
1000  
560pF  
200k 84.5k  
133k  
0.1  
1
10  
100  
LOAD CURRENT (mA)  
3458L TA01a  
3458L TA01b  
3458lfa  
1

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