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MAX8525EEI+T

更新时间： 2024-09-23 13:01:07
品牌 Logo 应用领域
美信 - MAXIM 控制器
页数 文件大小 规格书
23页 915K
描述
Switching Controller, Current-mode, 0.005A, 1200kHz Switching Freq-Max, BICMOS, PDSO28, 0.150 INCH, 0.025 INCH PITCH, QSOP-28

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MAX8525EEI+T 技术参数

是否无铅： 不含铅是否Rohs认证： 符合
生命周期：Obsolete零件包装代码：SOIC
包装说明：SSOP, SSOP28,.25针数：28
Reach Compliance Code：compliantECCN代码：EAR99
HTS代码：8542.39.00.01风险等级：5.76
模拟集成电路 - 其他类型：SWITCHING CONTROLLER控制模式：CURRENT-MODE
控制技术：PULSE WIDTH MODULATION最大输入电压：5.5 V
最小输入电压：4.5 V标称输入电压：5 V
JESD-30 代码：R-PDSO-G28JESD-609代码：e3
长度：9.89 mm功能数量：1
端子数量：28最高工作温度：85 °C
最低工作温度：-40 °C最大输出电流：0.005 A
封装主体材料：PLASTIC/EPOXY封装代码：SSOP
封装等效代码：SSOP28,.25封装形状：RECTANGULAR
封装形式：SMALL OUTLINE, SHRINK PITCH峰值回流温度（摄氏度）：NOT SPECIFIED
认证状态：Not Qualified座面最大高度：1.73 mm
子类别：Switching Regulator or Controllers表面贴装：YES
切换器配置：PHASE-SHIFT最大切换频率：1200 kHz
技术：BICMOS温度等级：INDUSTRIAL
端子面层：Matte Tin (Sn)端子形式：GULL WING
端子节距：0.635 mm端子位置：DUAL
处于峰值回流温度下的最长时间：NOT SPECIFIED宽度：3.9 mm
Base Number Matches：1

MAX8525EEI+T 数据手册

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19-2855; Rev 2; 4/05  
2- to 8-Phase VRM 10/9.1 PWM Controllers  
with Precise Current Sharing and Fast Voltage  
Positioning  
General Description  
Features  
The MAX8525 (VRM 10/VRD 10)/MAX8524 (VRM 9.1/  
VRD 9.1) current-mode step-down controllers, the  
MAX8523 high-speed, dual-phase MOSFET gate driver,  
and the MAX8552 wide-input, single-phase MOSFET  
gate driver provide flexible, low-cost, low-voltage CPU  
core supplies. The MAX8523 and MAX8552 high-speed,  
high-current gate drivers allow operation at high switch-  
ing frequencies to reduce external component size and  
cost for small-footprint, low-profile designs. Pin-selec-  
table 2-, 3-, and 4-phase operation and master-slave 6-  
and 8-phase operation provide output-current scalability  
for servers, workstations, desktops, desk notes, and net-  
working applications.  
♦ VRD/VRM 10 (MAX8525)  
♦ VRD/VRM 9.1 (MAX8524)  
♦ Fastest Load-Transient Response  
♦ Rapid-Active Average Current Sensing  
Better than 5% Current Balance  
Fastest Voltage Positioning  
♦
0.4% ꢀnitial ꢁutput-Voltage Accuracꢂ  
♦ Pin-Selectable 2-/3-/4-Phase ꢁperation  
♦ Master-Slave 6-/8-Phase ꢁperation  
♦ Differential Remote Voltage Sensing  
♦ Dꢂnamic VꢀD Change (MAX8525)  
♦ Adjustable, Foldback Current Limit  
♦ Soft-Start and Soft-Stop  
The switching frequency of the MAX8524/MAX8525 is  
adjustable from 150kHz to 1.2MHz, permitting loop  
bandwidths of up to 200kHz. Peak current-mode con-  
trol provides fast transient response and reduces cost.  
A proprietary current-sharing scheme reduces current  
imbalance between phases to less than 5% at full load.  
♦ Power-Good ꢁutput  
♦ 150kHz to 1.2MHz Switching Frequencꢂ per Phase  
♦ 28-Lead QSꢁP Package  
The MAX8524/MAX8525 offer 0.4% initial accuracy and  
remote-sense functionality. Both controllers also feature  
programmable no-load offset and output-voltage posi-  
tioning to adjust the output voltage as a function of the  
output current. The fast-active voltage positioning further  
reduces bulk output capacitors and cost.  
Ordering Information  
PART  
MAX8524EEI  
MAX8524EEI+  
MAX8525EEI  
MAX8525EEI+  
TEMP RANGE  
-40°C to +85°C  
-40°C to +85°C  
-40°C to +85°C  
-40°C to +85°C  
PꢀN-PACKAGE  
28 QSOP  
28 QSOP  
Current-mode control also simplifies compensation with  
a variety of capacitors by eliminating the output-filter  
double pole associated with voltage-mode controllers.  
Both devices are compatible with electrolytic, tantalum,  
polymer, and ceramic capacitors. Output current sens-  
ing eliminates issues associated with controllers that  
use high-side current sense and ensure stable and jit-  
ter-free operation. Temperature-compensated, lossless  
inductor current sense eliminates the need for a cur-  
rent-sense resistor and further reduces cost, while  
maintaining voltage-positioning accuracy and reducing  
power dissipation.  
28 QSOP  
28 QSOP  
+Denotes lead-free package.  
Pin Configurations  
TOP VIEW  
PWM3  
PWM1  
CS1+  
1
2
3
4
5
6
7
8
9
28 PWM2  
27 PWM4  
26 CS4+  
25 CS2_4-  
24 CS2+  
CS1_3-  
CS3+  
The MAX8525 features control VID voltage transition for  
dynamic VID changes and eliminate both undervoltage  
and overvoltage overshoot. The PWRGD signal is accu-  
rate during VID code changes for the MAX8525 to  
avoid any false fault signal.  
MAX8525  
V
CC  
23 RS+  
GND  
COMP  
REF  
22 RS-  
21 EN  
20 VID4  
19 VID3  
18 VID2  
17 VID1  
16 VID0  
15 VID5  
Adjustable foldback current-limit and overvoltage pro-  
tection provide for a robust design.  
ILIM 10  
OSC 11  
PWRGD 12  
CLKO 13  
CLKI 14  
Applications  
Servers, Workstations  
Desktop Computers  
QSꢁP  
Desk Notes and LCD PCs  
Voltage-Regulator Modules  
High-End Switches and Routers  
Pin Configurations continued at end of data sheet.  
Functional Diagram appears at end of data sheet.  
________________________________________________________________ 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...23

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