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LM5574MT/NOPB PDF预览

LM5574MT/NOPB

更新时间： 2024-01-02 16:46:46
品牌 Logo 应用领域
德州仪器 - TI 开关稳压器
页数 文件大小 规格书
28页 881K
描述
75V、0.5A 降压开关稳压器 | PW | 16 | -40 to 125

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LM5574MT/NOPB 技术参数

是否Rohs认证：符合生命周期：Transferred
包装说明：TSSOP, TSSOP16,.25Reach Compliance Code：compliant
ECCN代码：EAR99HTS代码：8542.39.00.01
风险等级：5.18Is Samacsys：N
其他特性：ALSO HAS ADJUSTABLE OUTPUT VOLTAGE AS LOW AS 1.225V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：75 V最小输入电压：6 V
标称输入电压：48 VJESD-30 代码：R-PDSO-G16
JESD-609代码：e3长度：5 mm
湿度敏感等级：1功能数量：1
端子数量：16最高工作温度：125 °C
最低工作温度：-40 °C最大输出电流：0.5 A
封装主体材料：PLASTIC/EPOXY封装代码：TSSOP
封装等效代码：TSSOP16,.25封装形状：RECTANGULAR
封装形式：SMALL OUTLINE, THIN PROFILE, SHRINK PITCH峰值回流温度（摄氏度）：260
认证状态：Not Qualified座面最大高度：1.1 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：545 kHz
温度等级：AUTOMOTIVE端子面层：Matte Tin (Sn)
端子形式：GULL WING端子节距：0.65 mm
端子位置：DUAL处于峰值回流温度下的最长时间：NOT SPECIFIED
宽度：4.4 mmBase Number Matches：1

LM5574MT/NOPB 数据手册

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LM5574, LM5574-Q1  
www.ti.com  
SNVS478F –JANUARY 2007–REVISED APRIL 2013  
PIN DESCRIPTIONS (continued)  
Pin(s)  
Name  
Description  
Application Information  
15  
PRE  
Pre-charge assist for the bootstrap  
capacitor  
This open drain output can be connected to SW pin to aid  
charging the bootstrap capacitor during very light load conditions  
or in applications where the output may be pre-charged before  
the LM5574 is enabled. An internal pre-charge MOSFET is  
turned on for 250ns each cycle just prior to the on-time interval  
of the buck switch.  
16  
BST  
Boost input for bootstrap capacitor  
An external capacitor is required between the BST and the SW  
pins. A 0.022µF ceramic capacitor is recommended. The  
capacitor is charged from Vcc via an internal diode during the  
off-time of the buck switch.  
These devices have limited built-in ESD protection. The leads should be shorted together or the device placed in conductive foam  
during storage or handling to prevent electrostatic damage to the MOS gates.  
Absolute Maximum Ratings(1)(2)  
VIN to GND  
76V  
BST to GND  
90V  
PRE to GND  
76V  
SW to GND (Steady State)  
BST to VCC  
-1.5V  
76V  
SD, VCC to GND  
BST to SW  
14V  
14V  
OUT to GND  
Limited to Vin  
7V  
SYNC, SS, FB, RAMP to GND  
ESD Rating(3)  
Human Body Model  
2kV  
Storage Temperature Range  
-65°C to +150°C  
(1) Absolute Maximum Ratings are limits beyond which damage to the device may occur. Operating Ratings are conditions under which  
operation of the device is intended to be functional. For ensured specifications and test conditions, see the Electrical Characteristics.  
(2) If Military/Aerospace specified devices are required, please contact the Texas Instruments Sales Office/Distributors for availability and  
specifications.  
(3) The human body model is a 100pF capacitor discharged through a 1.5kΩ resistor into each pin.  
Operating Ratings(1)  
VIN  
6V to 75V  
Operation Junction Temperature  
−40°C to + 125°C  
(1) Absolute Maximum Ratings are limits beyond which damage to the device may occur. Operating Ratings are conditions under which  
operation of the device is intended to be functional. For ensured specifications and test conditions, see the Electrical Characteristics.  
Copyright © 2007–2013, Texas Instruments Incorporated  
Submit Documentation Feedback  
3
Product Folder Links: LM5574 LM5574-Q1  
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