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LTC3458LEDE#TR PDF预览

LTC3458LEDE#TR

更新时间: 2024-11-19 21:02:31
品牌 Logo 应用领域
凌特 - Linear 光电二极管输出元件
页数 文件大小 规格书
16页 293K
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#TR 技术参数

是否Rohs认证: 不符合生命周期:Transferred
零件包装代码:DFN包装说明:HVSON, SOLCC12,.12,20
针数:12Reach Compliance Code:not_compliant
ECCN代码:EAR99HTS代码:8542.39.00.01
风险等级:5.81其他特性:ADJUSTABLE OUTPUT VOLTAGE RANGE FROM 2 VOLT TO 6 VOLT
模拟集成电路 - 其他类型:BATTERY CHARGE CONTROLLER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 V
JESD-30 代码:R-PDSO-N12JESD-609代码:e0
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:85 °C最低工作温度:-40 °C
标称输出电压:5 V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):235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:1150 kHz技术:CMOS
温度等级:INDUSTRIAL端子面层:Tin/Lead (Sn/Pb)
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:NOT SPECIFIED
宽度:3 mmBase Number Matches:1

LTC3458LEDE#TR 数据手册

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LTC3458  
1.4A, 1.5MHz Synchronous  
Step-Up DC/DC Converter  
with Output Disconnect  
U
FEATURES  
DESCRIPTIO  
The LTC®3458 is a high efficiency, current mode, fixed  
frequency, step up DC/DC converter with true output  
disconnect and inrush current limiting. The LTC3458 is  
rated for a 7.5V output and includes a 0.3Ω N-channel  
MOSFET switch and a 0.4Ω P-channel MOSFET synchro-  
nous rectifier. The LTC3458 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 93%  
Inrush Current Limiting and Output Disconnect  
Programmable Output Voltages up to 7.5V  
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  
700mA at 7V from 5V Input  
0.3Ω N-Channel and 0.4Ω P-Channel 1.4A Switches  
Quiescent current is only 15μA 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. The LTC3458 is available in a low profile (0.75mm),  
3mm × 4mm 12-pin DFN package.  
at 5VOUT  
Ultralow Quiescent Currents: 15μA Sleep, <1μA in  
Shutdown  
3mm × 4mm 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.  
LCD Bias  
OLED Displays  
U
TYPICAL APPLICATIO  
USB to 7V at 1MHz  
COEV  
10μH  
DQ7545  
USB to 7VOUT  
1000  
100  
95  
90  
85  
80  
75  
70  
SW  
V
IN  
USB  
4.35V to 5.25V  
5.25V  
IN  
LTC3458  
2.2μF  
V
OUT  
V
GND/PGND  
SHDN  
7V  
OUT  
FB  
4.35V  
500mA  
IN  
10pF  
1.5M  
316k  
10  
ON OFF  
POWER LOSS  
COMP  
SS  
SYNC  
0.01μF  
33k  
R
I
T
22μF  
X5R  
0.01μF  
10pF  
0.1  
1000  
BURST  
0.1  
1
10  
100  
LIM  
LOAD CURRENT (mA)  
560pF  
200k 124k  
133k  
3458 TA01b  
3458 TA01a  
3458fa  
1

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