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LM5146QRGYTQ1 PDF预览

LM5146QRGYTQ1

更新时间: 2024-11-24 11:06:47
品牌 Logo 应用领域
德州仪器 - TI 控制器开关输出元件
页数 文件大小 规格书
49页 2983K
描述
具有宽占空比范围的汽车类 100V 同步降压直流/直流控制器 | RGY | 20 | -40 to 150

LM5146QRGYTQ1 技术参数

是否无铅:不含铅是否Rohs认证:符合
生命周期:Active包装说明:VQFN-20
Reach Compliance Code:compliantFactory Lead Time:6 weeks
风险等级:1.73Is Samacsys:N
其他特性:ADJUSTABLE OUTPUT VOLTAGE 0.8 TO 60V模拟集成电路 - 其他类型:SWITCHING CONTROLLER
控制模式:VOLTAGE-MODE控制技术:PULSE WIDTH MODULATION
最大输入电压:100 V最小输入电压:5.5 V
标称输入电压:48 VJESD-30 代码:R-PQCC-N20
JESD-609代码:e3长度:4.5 mm
湿度敏感等级:2功能数量:1
端子数量:20最高工作温度:150 °C
最低工作温度:-40 °C最大输出电压:60 V
最小输出电压:0.8 V封装主体材料:PLASTIC/EPOXY
封装代码:HVQCCN封装形状:RECTANGULAR
封装形式:CHIP CARRIER, HEAT SINK/SLUG, VERY THIN PROFILE筛选级别:AEC-Q100
座面最大高度:1 mm表面贴装:YES
切换器配置:BUCK最大切换频率:1000 kHz
温度等级:AUTOMOTIVE端子面层:Matte Tin (Sn)
端子形式:NO LEAD端子节距:0.5 mm
端子位置:QUAD宽度:3.5 mm
Base Number Matches:1

LM5146QRGYTQ1 数据手册

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LM25149
SNVSBV5 – DECEMBER 2020  
LM25149 42-V Synchronous Buck DC/DC Controller with Ultra-Low IQ and Integrated  
Active EMI Filter  
1 Features  
2 Applications  
Two integrated EMI mitigation mechanisms  
– Active EMI filter for enhanced EMI performance  
at lower frequencies  
Building automation  
Industrial transport  
Wireless infrastructure  
– Dual random spread spectrum (DRSS) for  
enhanced EMI performance across low and  
high-frequency bands  
3 Description  
The LM25149 is a 42-V synchronous buck DC/DC  
controller for high-current single-output applications.  
Refer to the Errata. The device uses peak current-  
EMI reduced by an average of 25 dBµV  
– Reduces the external differential-mode filter  
size by 50% and lowers systems cost  
Versatile synchronous buck DC/DC controller  
– Wide input voltage range of 3.5 V to 42 V  
– 1% accurate, fixed 3.3-V, 5-V, 12-V, or  
adjustable outputs from 0.8 V to 36 V  
– 150°C maximum junction temperature  
– Shutdown mode current: 2.2 µA  
mode  
control  
architecture  
for  
easy  
loop  
compensation, fast transient response, and excellent  
load and line regulation. The LM25149 can be set up  
in interleaved mode (paralleled output) with accurate  
current sharing for high-current applications. The  
LM25149 can operate at input voltages as low as 3.5  
V, at nearly 100% duty cycle if needed.  
The LM25149 has two unique EMI reduction features:  
active EMI Filter and Dual Random Spread Spectrum  
(DRSS). Active EMI filter senses any noise or ripple  
voltage on the DC input bus and injects an out-of-  
phase cancellation signal to reduce the noise or ripple  
voltage. DRSS combines a low-frequency triangular  
and high-frequency random modulation to optimize  
EMI preformance in the low-frequency and high-  
frequency radio frequency bands.  
– No-load standby current: 9 µA  
Switching frequency from 100 kHz to 2.2 MHz  
– SYNC in and SYNC out capability  
Inherent protection features for robust design  
– Internal hiccup-mode overcurrent protection  
– ENABLE and PGOOD functions  
– VCC, VDDA, and gate-drive UVLO protection  
– Internal or external loop compensation  
– Thermal shutdown protection with hysteresis  
Create a custom design using the LM25149 with  
WEBENCH® Power Designer  
Device Information  
PART NUMBER  
PACKAGE(1)  
BODY SIZE (NOM)  
LM25149  
VQFN (24)  
3.5 mm × 5.5 mm  
(1) For all available packages, see the orderable addendum at  
the end of the data sheet  
CISPR 25 Class 5 Peak  
Start 150 kHz  
Stop 30 MHz  
CISPR 25 Class 5 Average  
Typical Application Schematic  
CISPR 25 EMI Performance 150 kHz ̶ 30 MHz  
An IMPORTANT NOTICE at the end of this data sheet addresses availability, warranty, changes, use in safety-critical applications,  
intellectual property matters and other important disclaimers. ADVANCE INFORMATION for preproduction products; subject to change  
without notice.  
 
 
 

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