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Datasheet > LTC3542EDC#TRPBF
LTC3542EDC#TRPBF PDF预览

LTC3542EDC#TRPBF

更新时间： 2024-11-12 19:57:07
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 214K
描述
LTC3542 - 500mA, 2.25MHz Synchronous Step-Down DC/DC Converter; Package: DFN; Pins: 6; Temperature Range: -40°C to 85°C

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中文翻译

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LTC3542EDC#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, SOLCC6,.08,20
针数：6Reach Compliance Code：compliant
ECCN代码：EAR99HTS代码：8542.39.00.01
风险等级：5.12模拟集成电路 - 其他类型：SWITCHING REGULATOR
控制模式：CURRENT-MODE最大输入电压：5.5 V
最小输入电压：2.5 V标称输入电压：3.6 V
JESD-30 代码：S-PDSO-N6JESD-609代码：e3
长度：2 mm湿度敏感等级：1
功能数量：1端子数量：6
最高工作温度：85 °C最低工作温度：
最大输出电流：0.5 A封装主体材料：PLASTIC/EPOXY
封装代码：HVSON封装等效代码：SOLCC6,.08,20
封装形状：SQUARE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：BUCK
最大切换频率：2700 kHz技术：CMOS
温度等级：OTHER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：2 mmBase Number Matches：1

LTC3542EDC#TRPBF 数据手册

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LTC3542  
500mA, 2.25MHz  
Synchronous Step-Down  
DC/DC Converter  
FEATURES  
DESCRIPTION  
TheLTC®3542isahighefficiencymonolithicsynchronous  
buck converter using a constant frequency, current mode  
architecture. Supply current during operation is only  
26μA, dropping to <1μA in shutdown. The 2.5V to 5.5V  
input voltage range makes the LTC3542 ideally suited for  
single Li-Ion battery-powered applications. 100% duty  
cycle provides low dropout operation, extending battery  
life in portable systems. The output voltage is adjustable  
■
High Efficiency: Up to 96%  
■
High Peak Switch Current: 1000mA  
■
Low Output Ripple (<20mV Typical)  
Burst Mode Operation: Only 26μA  
P-P  
■
■
■
■
■
■
■
■
■
■
■
Very Low Quiescent Current: Only 26μA  
2.5V to 5.5V Input Voltage Range  
2.25MHz Constant Frequency Operation  
1MHz to 3MHz External Frequency Synchronization  
Low Dropout Operation: 100% Duty Cycle  
No Schottky Diode Required  
Internal Soft-Start Limits Inrush Current  
0.6V Reference Allows Low Output Voltages  
Shutdown Mode Draws <1μA Supply Current  
2% Output Voltage Accuracy  
Current Mode Operation for Excellent Line and Load  
Transient Response  
Overtemperature Protected  
Available in 6-Lead 2mm × 2mm DFN and Small TSOT  
from 0.6V to V . Internal power switches are optimized  
IN  
to provide high efficiency and eliminate the need for an  
external Schottky diode.  
Switching frequency is internally set at 2.25MHz, allowing  
the use of small surface mount inductors and capacitors,  
and it can synchronize to an external clock signal with a  
frequency range of 1MHz to 3MHz through the MODE/  
SYNC pin. The LTC3542 is specifically designed to work  
well with ceramic output capacitors, achieving very low  
output voltage ripple and a small PCB footprint.  
■
■
TheLTC3542canbeconfiguredforthepowersavingBurst  
Mode® Operation. For reduced noise and RF interference,  
the MODE/SYNC pin can be configured for pulse skipping  
operation.  
APPLICATIONS  
■
Cellular Telephones  
■
Wireless and DSL Modems  
■
Digital Cameras  
MP3 Players  
, LT, LTC, LTM and Burst Mode are registered trademarks of Linear Technology  
Corporation. All other trademarks are the property of their respective owners.  
Protected by U.S. Patents, including 5481178, 6580258, 6304066, 6127815, 6498466,  
6611131, 5994885.  
■
■
PDAs and Other Handheld Devices  
Efficiency and Power Loss vs Output Current  
TYPICAL APPLICATION  
100  
90  
80  
70  
60  
50  
40  
30  
20  
10  
0
1000  
100  
10  
V
V
= 3.6V  
IN  
OUT  
= 1.8V  
2.2μH  
V
OUT  
V
IN  
1.8V  
V
SW  
LTC3542  
RUN  
IN  
2.7V TO 5.5V  
22pF  
C
IN  
500mA  
10μF  
CER  
150k  
V
FB  
C
OUT  
75k  
MODE/SYNC  
GND  
10μF  
CER  
1
3542 TA01a  
0.1  
1000  
0.1  
1
10  
100  
3542 TA01b  
OUTPUT CURRENT (mA)  
3542fa  
1
1234567...16

中文翻译

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LTC3542EDC#TRPBF 替代型号

型号 品牌 替代类型 描述 数据表
LTC3542EDC#TR Linear

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