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MAX17509

更新时间： 2024-11-16 14:58:19
品牌 Logo 应用领域
亚德诺 - ADI DC-DC转换器
页数 文件大小 规格书
24页 721K
描述
4.5V–16V、双路3A输出、高效、同步降压型DC-DC转换器，带电阻编程功能

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中文翻译

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MAX17509 数据手册

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EVALUATION KIT AVAILABLE  
MAX17509  
4.5V–16V, Dual 3A, High-Efficiency, Synchronous Step-Down  
DC-DC Converter with Resistor Programmability  
General Description  
Benefits and Features  
● Reduces Number of DC-DC Regulators in Inventory  
• Output Voltage (0.904V to 3.782V and 4.756V to  
5.048V with 20mV Resolution)  
The MAX17509 integrates two 3A internal switch step-down  
regulators with programmable features. The device can  
be configured as two single-phase independent, 3A power  
supplies or as a dual-phase, single-output 6A power  
supply. The device operates from 4.5V to 16V input and  
generates independently adjustable output voltage in the  
ranges of 0.904V to 3.782V and 4.756V to 5.048V, with  
±2% system accuracy.  
• Configurable Two Independent Outputs (3A/3A) or  
a Dual-Phase Single Output (6A)  
● Mitigate Noise Concerns and EMI  
• Adjustable Switching Frequency with Selectable  
0/180° Phase Shift  
• External Frequency Synchronization  
• Adjustable Switching Slew Rate  
• Passes EN55022 (CISPR22) Class-B Radiated  
and Conducted EMI Standard  
This device provides maximum flexibility to the end-user  
by allowing to choose multiple programmable options by  
connecting resistors to the configuration pins. Two key  
highlights of the device are the self-configured compen-  
sation for any output voltage and the ability to program  
the slew rate of LX switching nodes to mitigate noise  
concerns. In noise-sensitive applications, such as high-  
speed multi-gigabit transceivers in FPGAs, RF, and audio  
benefit from this unique slew rate control. SYNC input is  
provided for synchronized operation of multiple devices  
with system clocks.  
● Ease of System Design  
• All Ceramic Capacitors Solution  
• Auto-Configured Internal Compensation  
• Selectable Hiccup or Brickwall Mode  
• Adjustable Soft-Start Rise/Fall Time with Soft Stop  
Modes and Prebias Startup  
• -40°C to +125°C Operation  
● Reliable Operation  
MAX17509 offers output overvoltage (OV) and  
undervoltage (UV) protection, as well as overcurrent  
(OC) and undercurrent (UC) protection with a selectable  
hiccup/latch option. It operates over the -40°C to +125°C  
temperature range, with thermal sensing and shutdown  
provided for overtemperature (OT) protection. The device  
is available in a 32-pin 5mm x 5mm TQFN package.  
• Robust Fault Protections (VIN_UVLO, UV/OV, UC/  
OC, OT)  
• Power Good  
Application Circuit  
MAX17509  
PGOOD1, 2  
Applications  
● FPGA and DSP Core Power  
● Industrial Control Equipment  
AVCC  
EN1, 2  
SYNC  
VCC  
CVCC  
V
IN  
IN1  
CAVCC  
CIN1  
● Multiple Point-of-Load (POL) Power Supplies  
● Base Station Point-of-Load Regulator  
AVCC  
BST1  
CBST1  
V
OUT1  
RCOARSE1  
RFINE1  
RSS1  
L1  
COARSE1  
FINE1  
LX1  
OUT1  
COUT1  
Ordering Information appears at end of data sheet.  
PGND1  
SS1  
V
IN  
IN2  
RCOARSE2  
RFINE2  
RSS2  
CIN2  
L2  
COARSE2  
FINE2  
BST2  
CBST2  
V
OUT2  
LX2  
SS2  
OUT2  
COUT2  
RMODE  
PGND2  
MODE  
SGND  
EP  
19-7051; Rev 0; 2/15  
1234567...24

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