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LTC3458L PDF预览

LTC3458L

更新时间: 2024-01-02 05:53:57
品牌 Logo 应用领域
凌特 - Linear 转换器
页数 文件大小 规格书
16页 390K
描述
1.7A, 1.5MHz Synchronous Step-Up DC/DC Converter with Output Disconnect

LTC3458L 技术参数

是否无铅: 含铅是否Rohs认证: 符合
生命周期:Active包装说明:HVSON,
针数:12Reach Compliance Code:compliant
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表面贴装:YES
切换器配置:BOOST最大切换频率:1500 kHz
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 mmBase Number Matches:1

LTC3458L 数据手册

 浏览型号LTC3458L的Datasheet PDF文件第2页浏览型号LTC3458L的Datasheet PDF文件第3页浏览型号LTC3458L的Datasheet PDF文件第4页浏览型号LTC3458L的Datasheet PDF文件第5页浏览型号LTC3458L的Datasheet PDF文件第6页浏览型号LTC3458L的Datasheet PDF文件第7页 
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 0.2N-channel  
MOSFET switch and a 0.3P-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  
0.2N-Channel and 0.3P-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  
, LTC and LT are registered trademarks of Linear Technology Corporation.  
Burst Mode is a registered trademark of Linear Technology Corporation.  
All other trademarks are the property of their respective owners.  
Portable GPS  
MP3 Players  
Protected by U.S. Patents including 5481178, 6304066, 6580258, 5511131, 6498466  
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  
3458lf  
1

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