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MAX8552

更新时间： 2024-11-25 22:55:11
品牌 Logo 应用领域
美信 - MAXIM 驱动器
页数 文件大小 规格书
11页 215K
描述
High-Speed, Wide-Input, Single-Phase MOSFET Driver

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MAX8552 数据手册

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19-2997; Rev 0; 10/03  
High-Speed, Wide-Input,  
Single-Phase MOSFET Driver  
x
General Description  
Features  
The MAX8552 highly integrated monolithic MOSFET dri-  
ver is capable of driving a pair of power MOSFETs in  
single or multiphase synchronous buck-converter appli-  
cations that provide up to 30A output current per  
phase. The MAX8552 simplifies PC board layout in mul-  
tiphase systems, particularly three phases and higher.  
High input voltages up to 24V allow the MAX8552 to be  
used in desktop, notebook, and server applications.  
Each MOSFET driver is capable of driving 3000pF  
capacitive loads with only 12ns propagation delay and  
11ns (typ) rise and fall times, making the MAX8552  
ideal for high-frequency applications.  
ꢀ Single-Phase Synchronous Drivers  
ꢀ Up to 24V (max) Input Voltage  
ꢀ 0.1µA (typ) Quiescent Current in Shutdown Over  
Temperature  
ꢀ 0.5Ω/1.0Ω/0.7Ω/1.3Ω R  
Drivers  
OUT  
ꢀ 12ns (typ) Propagation Delay  
ꢀ 11ns (typ) Rise/Fall Times with 3000pF Load  
ꢀ Adaptive Dead Time and User-Programmable  
Delay Mode  
User-programmable break-before-make circuitry pre-  
vents shoot-through currents, maximizing converter effi-  
ciency. An enable input allows total driver shutdown  
(<1µA typ) for power-sensitive portable applications.  
The PWM control input is compatible with TTL and  
CMOS logic levels. The MAX8552, along with the  
MAX8524 or the MAX8525 multiphase controllers, pro-  
vides flexible 2-, 3-, 4-, 6-, or 8-phase CPU core-voltage  
supplies.  
ꢀ Up to 2MHz Operation with TDFN Package  
ꢀ Up to 1.2MHz Operation with µMAX Package  
ꢀ Enable Function  
ꢀ TTL- and CMOS-Compatible Logic Inputs  
ꢀ Available in a Space-Saving Thin DFN Package  
The MAX8552 is available in space-saving 10-pin TDFN  
and µMAX packages and is specified for -40°C to  
+85°C operation.  
Ordering Information  
PART  
TEMP RANGE  
PIN-PACKAGE  
MAX8552EUB  
-40°C to +85°C  
10 µMAX  
Applications  
10 TDFN  
3mm x 3mm  
MAX8552ETB  
-40°C to +85°C  
Multiphase Buck Converters  
Voltage Regulator Modules (VRMs)  
Processor-Core Voltage Regulators  
Desktops, Notebooks, and Servers  
Switching Power Supplies  
Pin Configurations appear at end of data sheet.  
Typical Operating Circuit  
V
V
IN  
6V TO 24V  
CC  
4.5V TO 6.5V  
V
BST  
DH  
CC  
GND  
ON  
V
OUT  
1.45V AT 20A  
EN MAX8552 LX  
DLY  
OFF  
DL  
PWM CONTROL  
SIGNAL  
PWM  
PGND  
________________________________________________________________ Maxim Integrated Products  
1
For pricing delivery, and ordering information please contact Maxim/Dallas Direct! at  
1-888-629-4642, or visit Maxim’s website at www.maxim-ic.com.  
1234567...11

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