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MAX15035

更新时间： 2024-11-14 11:18:31
品牌 Logo 应用领域
美信 - MAXIM 稳压器开关
页数 文件大小 规格书
27页 570K
描述
15A Step-Down Regulator with Internal Switches

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MAX15035 数据手册

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19-4123; Rev 2; 10/08  
15A Step-Down Regulator with Internal Switches  
MAX1035  
General Description  
Features  
The MAX15035 pulse-width modulation (PWM) controller  
provides high efficiency, excellent transient response,  
and high DC-output accuracy. Combined with the inter-  
nal low on-resistance MOSFETs, the MAX15035 pro-  
vides a highly efficient and compact solution for small  
form factor applications that need a high-power density.  
o 4.5V to 26V Input Voltage Range  
o Fast Transient Response  
o Monotonic Power-Up with Precharged Output  
o Supports Any Output Capacitor  
No Compensation Required with Polymers/  
Tantalum  
Maxim’s proprietary Quick-PWM™ quick-response,  
constant on-time PWM control scheme handles wide  
input/output voltage ratios (low-duty-cycle applications)  
with ease and provides 100ns instant-on response to  
load transients while maintaining a relatively constant  
switching frequency. The output voltage can be dynam-  
ically controlled using the dynamic REFIN, which sup-  
ports input voltages between 0V to 2V. The REFIN  
adjustability combined with a resistive voltage-divider  
on the feedback input allows the MAX15035 to be con-  
Stable with Ceramic Output Capacitors Using  
External Compensation  
o Dynamically Adjustable Output Voltage  
0.5% V  
Accuracy Over Line and Load  
OUT  
o Adjustable Valley Current-Limit Protection  
Thermal Compensation with NTC  
Supports Foldback Current Limit  
figured for any output voltage between 0V to 0.9V .  
IN  
o Programmable Switching Frequency  
o Overvoltage Protection  
The controller senses the current across the synchro-  
nous rectifier to achieve a low-cost and highly efficient  
valley current-limit protection. External current-limit con-  
trol is provided to allow higher current-limit settings for  
applications with heatsinks and air flow, or for lower  
current applications that need lower current-limit set-  
tings to avoid overdesigning the application circuit. The  
adjustable current limit provides a high degree of flexi-  
bility, allowing thermally compensated protection or  
foldback current-limit protection using a voltage-divider  
partially derived from the output.  
o Undervoltage Protection  
o Voltage Soft-Start and Soft-Shutdown  
o Power-Good Window Comparator  
Ordering Information  
PART  
TEMP RANGE  
PIN-PACKAGE  
MAX15035ETL+  
-40°C to +85°C  
40 TQFN-EP*  
+Denotes a lead-free/RoHS-compliant package.  
*EP = Exposed pad.  
The MAX15035 includes a voltage-controlled soft-start  
and soft-shutdown to limit the input surge current, pro-  
vide a monotonic power-up into a precharged output,  
and provide a predictable soft-start time. The controller  
also includes output fault protection—undervoltage and  
overvoltage protection—as well as thermal-fault protec-  
tion.  
Pin Configuration  
TOP VIEW  
30 29 28 27 26 25 24 23 22 21  
20  
31  
32  
33  
IN  
N.C.  
The MAX15035 is available in a small 40-pin, 6mm x 6mm,  
TQFN package.  
EP1  
EP3  
IN  
19 IN  
FB  
18 IN  
ILIM  
Applications  
AGND  
MAX15035  
17 N.C.  
REFIN 34  
Server Computers  
16  
LX  
15 PGND  
14  
35  
36  
37  
38  
39  
REF  
EP2  
GPU Core Supplies  
SKIP  
DDR Memory—VDDQ or VTT  
Point-of-Load Applications  
Step-Down Power Supplies  
Storage Power Supplies  
PGND  
13 PGND  
12  
V
CC  
LX  
PGOOD  
N.C.  
PGND  
11 PGND  
40  
N.C.  
+
1
2
3
4
5
6
7
8
9
10  
Quick-PWM is a trademark of Maxim Integrated Products, Inc.  
THIN QFN  
(6mm x 6mm)  
________________________________________________________________ Maxim Integrated Products  
1
For pricing, delivery, and ordering information, please contact Maxim Direct at 1-888-629-4642,  
or visit Maxim’s website at www.maxim-ic.com.  
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