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MAX15020ATP+

更新时间： 2024-11-14 05:00:35
品牌 Logo 应用领域
美信 - MAXIM 转换器
页数 文件大小 规格书
19页 349K
描述
2A, 40V Step-Down DC-DC Converter with Dynamic Output-Voltage Programming

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19-0811; Rev 0; 4/07  
2A, 40V Step-Down DC-DC Converter with  
Dynamic Output-Voltage Programming  
MAX1520  
General Description  
Features  
o Wide 7.5V to 40V Input Voltage Range  
The MAX15020 high-voltage step-down DC-DC con-  
verter operates over an input voltage range of 7.5V to  
40V. The device integrates a 0.2Ω high-side switch and  
is capable of delivering 2A load current with excellent  
load and line regulation. The output is dynamically  
adjustable from 0.5V to 36V through the use of an exter-  
nal reference input (REFIN). The MAX15020 consumes  
only 6µA in shutdown mode.  
o 2A Output Current, Up to 96% Efficiency  
o Dynamic Programmable Output Voltage (0.5V to  
36V)  
o Maximum Duty Cycle of 95% (typ) at 300kHz  
o 100kHz to 500kHz Synchronizable SYNC  
Frequency Range  
The device utilizes feed-forward voltage-mode architec-  
ture for good noise immunity in the high-voltage switch-  
ing environment and offers external compensation for  
maximum flexibility. The switching frequency is selec-  
table to 300kHz or 500kHz and can be synchronized to  
an external clock signal of 100kHz to 500kHz by using  
the SYNC input. The IC features a maximum duty cycle  
of 95% (typ) at 300kHz.  
o Configurable UVLO and Soft-Start  
o Low-Noise, Voltage-Mode Step-Down Converter  
o Programmable Output-Voltage Slew Rate  
o Lossless Constant Current Limit with Fixed  
Timeout to Hiccup Mode  
o Extremely Low-Power Consumption (< 6µA typ) in  
The device includes configurable undervoltage lockout  
(UVLO) and soft-start. Protection features include  
cycle-by-cycle current limit, hiccup-mode for output  
short-circuit protection, and thermal shutdown. The  
MAX15020 is available in a 20-pin TQFN 5mm x 5mm  
package and is rated for operation over the  
-40°C to +125°C temperature range.  
Shutdown Mode  
o 20-Pin (5mm x 5mm) Thin QFN Package  
Ordering Information  
PIN-  
PACKAGE  
PKG  
CODE  
PART  
TEMP RANGE  
Applications  
20 TQFN-EP*  
(5mm x 5mm)  
MAX15020ATP+ -40°C to +125°C  
T2055-5  
Printer Head Driver Power Supply  
Automotive Power Supply  
Industrial Power Supply  
+Denotes a lead-free package.  
*EP = Exposed pad.  
Pin Configuration appears at end of data sheet.  
Step-Down Power Supply  
Typical Operating Circuit  
V
IN  
(7.5V TO 40V)  
REG  
DVREG  
IN  
BST  
ON/OFF  
REFOUT  
V
OUT  
(0.5V TO 36V)  
LX  
MAX15020  
FB  
PGND COMP  
PWM  
INPUT  
REFIN  
EP  
SS  
SYNC GND FSEL  
________________________________________________________________ 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...19

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MAX15020ATP+ 替代型号

型号 品牌 替代类型 描述 数据表
MAX15020ATP+T MAXIM

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