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MPQ4459DQT-Z-LF PDF预览

MPQ4459DQT-Z-LF

更新时间: 2024-01-10 09:34:43
品牌 Logo 应用领域
芯源 - MPS 开关光电二极管
页数 文件大小 规格书
15页 438K
描述
Switching Regulator, Current-mode, 4900kHz Switching Freq-Max, PDSO10, 3 X 3 MM, ROHS COMPLIANT, MO-229VEED-5, TQFN-10

MPQ4459DQT-Z-LF 技术参数

是否Rohs认证: 符合生命周期:Active
零件包装代码:SON包装说明:HVSON,
针数:10Reach Compliance Code:compliant
ECCN代码:EAR99HTS代码:8542.39.00.01
风险等级:5.74其他特性:ALSO OPERATES IN ADJUSTABLE MODE FROM 0.8 TO 36 V
模拟集成电路 - 其他类型:SWITCHING REGULATOR控制模式:CURRENT-MODE
最大输入电压:36 V最小输入电压:4.5 V
标称输入电压:12 VJESD-30 代码:S-PDSO-N10
JESD-609代码:e3长度:3 mm
湿度敏感等级:1功能数量:1
端子数量:10最高工作温度:85 °C
最低工作温度:-40 °C封装主体材料:PLASTIC/EPOXY
封装代码:HVSON封装形状:SQUARE
封装形式:SMALL OUTLINE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:BUCK
最大切换频率:4900 kHz温度等级:INDUSTRIAL
端子面层:MATTE TIN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:40宽度:3 mm
Base Number Matches:1

MPQ4459DQT-Z-LF 数据手册

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MPQ4459 – INDUSTRIAL GRADE, 1.5A, 4MHz, 36V STEP-DOWN CONVERTER  
PIN FUNCTIONS  
Pin # Name Description  
Switch Node. This is the output from the high-side switch. A low Vf Schottky rectifier to ground  
is required. The rectifier must be close to the SW pins to reduce switching spikes.  
Enable Input. Pulling this pin below the specified threshold shuts the chip down. Pulling it up  
above the specified threshold or leaving it floating enables the chip.  
Compensation. This node is the output of the GM error amplifier. Control loop frequency  
compensation is applied to this pin.  
1, 2  
3
SW  
EN  
4
COMP  
Feedback. This is the input to the error amplifier. An external resistive divider connected  
between the output and GND is compared to the internal +0.8V reference to set the regulation  
voltage.  
5
FB  
Ground. It should be connected as close as possible to the output capacitor avoiding the high  
current switch paths.  
Switching Frequency Program Input. Connect a resistor from this pin to ground to set the  
switching frequency.  
6
7
GND  
FREQ  
Input Supply. This supplies power to all the internal control circuitry, both BS regulators and  
the high-side switch. A decoupling capacitor to ground must e placed close to this pin to  
minimize switching spikes.  
Bootstrap. This is the positive power supply for the internal floating high-side MOSFET driver.  
Connect a bypass capacitor between this pin and SW pin.  
8, 9  
10  
VIN  
BST  
MPQ4459 Rev. 0.9  
12/10/2009  
www.MonolithicPower.com  
MPS Proprietary Information. Unauthorized Photocopy and Duplication Prohibited.  
© 2009 MPS. All Rights Reserved.  
4

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