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MAX17545ATP+ PDF预览

MAX17545ATP+

更新时间: 2024-11-15 15:46:43
品牌 Logo 应用领域
美信 - MAXIM 信息通信管理开关
页数 文件大小 规格书
21页 1093K
描述
Switching Regulator, Current-mode, 3.25A, 2450kHz Switching Freq-Max, BICMOS, 4 X 4 MM, ROHS COMPLIANT, TQFN-20

MAX17545ATP+ 技术参数

是否Rohs认证: 符合生命周期:Active
包装说明:HVQCCN,Reach Compliance Code:compliant
ECCN代码:EAR99HTS代码:8542.39.00.01
Factory Lead Time:12 weeks风险等级:2.33
其他特性:ALSO OPERATES IN PFM CONTROL TECHNIQUE, ALSO OPERATES IN ADJUSTABLE MODE FROM 0.9 TO 37.8V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:42 V最小输入电压:4.5 V
标称输入电压:24 VJESD-30 代码:S-XQCC-N20
长度:4 mm功能数量:1
端子数量:20最高工作温度:125 °C
最低工作温度:-40 °C最大输出电流:3.25 A
封装主体材料:UNSPECIFIED封装代码:HVQCCN
封装形状:SQUARE封装形式:CHIP CARRIER, HEAT SINK/SLUG, VERY THIN PROFILE
峰值回流温度(摄氏度):NOT SPECIFIED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:2450 kHz技术:BICMOS
温度等级:AUTOMOTIVE端子形式:NO LEAD
端子节距:0.5 mm端子位置:QUAD
处于峰值回流温度下的最长时间:NOT SPECIFIED宽度:4 mm
Base Number Matches:1

MAX17545ATP+ 数据手册

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EVALUATION KIT AVAILABLE  
MAX17545  
4.5V–42V, 1.7A, High-Efficiency,  
Synchronous Step-Down DC-DC Converter  
With Internal Compensation  
General Description  
Benefits and Features  
The MAX17545 high-efficiency, high-voltage, synchronous  
step-down DC-DC converter with integrated MOSFETs  
operates over 4.5V to 42V input. The converter can deliver  
up to 1.7A and generates output voltages from 0.9V up to  
Reduces External Components and Total Cost  
• No Schottky—Synchronous Operation  
• Internal Compensation for Any Output Voltage  
• Built-In Soft-Start  
• All-Ceramic Capacitors, Compact Layout  
0.9 x V . The feedback (FB) voltage is accurate to within  
IN  
±1.1% over -40°C to +125°C.  
Reduces Number of DC-DC Regulators to Stock  
The MAX17545 uses peak-current-mode control. The  
device can be operated in pulse-width modulation (PWM),  
pulse-frequency modulation (PFM), or discontinuous  
conduction mode (DCM) control schemes.  
• Wide 4.5V to 42V Input  
• Adjustable 0.9V to 0.9 x V Output  
• 100kHz to 2.2MHz Adjustable Switching Frequency  
with External Synchronization  
IN  
The device is available in a 20-pin (4mm x 4mm) TQFN  
package. Simulation models are available.  
Reduces Power Dissipation  
Peak Efficiency > 90%  
PFM/DCM Enables Enhanced Light-load Efficiency  
• 2.8µA Shutdown Current  
Applications  
Industrial Power Supplies  
Distributed Supply Regulation  
High-Voltage Single-Board Systems  
Base Station Power Supply  
General-Purpose Point-of-Load  
Operates Reliably in Adverse Industrial Environments  
• Peak Current-Limit Protection  
• Built-in Output Voltage Monitoring with RESET  
• Programmable EN/UVLO Threshold  
• Monotonic Startup into Prebiased Load  
• Overtemperature Protection  
• High Industrial -40°C to +125°C Ambient Operating  
Temperature Range/-40°C to +150°C Junction  
Temperature Range  
Ordering Information appears at end of data sheet.  
Typical Application Circuit—5V, 500kHz Switching Frequency  
V
IN  
(6.5V TO 42V)  
C1  
2.2µF  
EN/UVLO  
V
IN  
V
IN  
V
IN  
RT  
BST  
LX  
C5  
0.1µF  
L1  
10µH  
V
OUT  
5V, 1.7A  
SYNC  
C4  
22µF  
MAX17545  
LX  
MODE  
R3  
178k  
LX  
FB  
V
CC  
C2  
2.2µF  
R4  
39kΩ  
SGND  
CF  
RESET  
SS  
PGND PGND PGND  
C3  
5.6nF  
f
= 500kHz  
SW  
L1 = 10µH, XAL6060, 6.4mm X 6.6mm  
19-7056; Rev 1; 7/16  

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