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MAX1858AEEG+ PDF预览

MAX1858AEEG+

更新时间： 2024-09-15 13:00:03
品牌 Logo 应用领域
美信 - MAXIM 控制器
页数 文件大小 规格书
22页 551K
描述
Dual Switching Controller, Voltage-mode, 660kHz Switching Freq-Max, BICMOS, PDSO24, 0.150 INCH, 0.25 INCH PITCH, MO-137AE, QSOP-24

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MAX1858AEEG+ 技术参数

是否无铅：不含铅是否Rohs认证：符合
生命周期：Active零件包装代码：SSOP
包装说明：SSOP,针数：24
Reach Compliance Code：compliantECCN代码：EAR99
HTS代码：8542.31.00.01Factory Lead Time：6 weeks
风险等级：1.4Is Samacsys：N
模拟集成电路 - 其他类型：DUAL SWITCHING CONTROLLER控制模式：VOLTAGE-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-G24JESD-609代码：e3
长度：8.65 mm湿度敏感等级：1
功能数量：2端子数量：24
最高工作温度：85 °C最低工作温度：-40 °C
封装主体材料：PLASTIC/EPOXY封装代码：SSOP
封装形状：RECTANGULAR封装形式：SMALL OUTLINE, SHRINK PITCH
峰值回流温度（摄氏度）：260认证状态：Not Qualified
座面最大高度：1.73 mm表面贴装：YES
切换器配置：PUSH-PULL最大切换频率：660 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

MAX1858AEEG+ 数据手册

 浏览型号MAX1858AEEG+的Datasheet PDF文件第2页浏览型号MAX1858AEEG+的Datasheet PDF文件第3页浏览型号MAX1858AEEG+的Datasheet PDF文件第4页浏览型号MAX1858AEEG+的Datasheet PDF文件第5页浏览型号MAX1858AEEG+的Datasheet PDF文件第6页浏览型号MAX1858AEEG+的Datasheet PDF文件第7页 
19-2966; Rev 0; 10/03  
Dual 180° Out-of-Phase Buck Controllers with  
Sequencing/Prebias Startup and POR  
General Description  
Features  
The MAX1858A/MAX1875A/MAX1876A dual, synchro-  
nized, step-down controllers generate two outputs from  
input supplies ranging from 4.5V to 23V. Each output is  
adjustable from sub-1V to 18V and supports loads of 10A  
or higher. Input voltage ripple and total RMS input ripple  
current are reduced by synchronized 180° out-of-phase  
operation.  
o 4.5V to 23V Input Supply Range  
o 0 to 18V Output Voltage Range (Up to 10A)  
o Adjustable Lossless Foldback Current Limit  
o Adjustable 100kHz to 600kHz Switching  
Frequency  
The switching frequency is adjustable from 100kHz to  
600kHz with an external resistor. Alternatively, the con-  
troller can be synchronized to an external clock gener-  
ated by another MAX1858A/MAX1875A/MAX1876A or a  
system clock. One MAX1858A/MAX1875A/MAX1876A  
can be set to generate an in-phase, or 90° out-of-  
phase, clock signal for synchronization with additional  
controllers. This allows two controllers to operate either  
as an interleaved two- or four-phase system with each  
output shifted by 90°. The MAX1858A/MAX1875A/  
MAX1876A feature soft-start. The MAX1858A also fea-  
tures first-on/last-off power sequencing and soft-stop.  
o Optional Synchronization  
o Clock Output for Master/Slave Synchronization  
o 4 x 90° Out-of-Phase Step-Down Converters  
(Using Two Controllers, Figure 7)  
o Prebias Startup (MAX1875A/MAX1876A)  
o Power Sequencing (MAX1858A)  
o RST Output with 140ms Minimum Delay  
(MAX1858A/MAX1876A)  
o Fixed-Frequency Pulse-Width Modulation (PWM)  
The MAX1858A/MAX1875A/MAX1876A eliminate the  
need for current-sense resistors by utilizing the low-side  
MOSFET’s on-resistance as a current-sense element.  
This protects the DC-DC components from damage dur-  
ing output-overload conditions or output short-circuit  
faults without requiring a current-sense resistor.  
Adjustable foldback current limit reduces power dissipa-  
tion during short-circuit conditions. The MAX1858A/  
MAX1876A include a power-on reset (POR) output to sig-  
nal the system when both outputs reach regulation.  
Operation  
Ordering Information  
PART  
TEMP RANGE  
-40°C to +85°C  
-40°C to +85°C  
-40°C to +85°C  
PIN-PACKAGE  
24 QSOP  
MAX1858AEEG  
MAX1875AEEG  
MAX1876AEEG  
24 QSOP  
24 QSOP  
The MAX1858A/MAX1875A/MAX1876A ensure that the  
output voltage does not swing negative when the input  
power is removed or when EN is driven low. The  
MAX1875A/MAX1876A also allow prebias startup with-  
out discharging the output.  
Pin Configuration  
TOP VIEW  
COMP2  
1
2
3
4
5
6
7
8
9
24 EN  
The MAX1858A/MAX1875A/MAX1876A are available in a  
24-pin QSOP package. Use the MAX1875 evaluation kit  
or the MAX1858 evaluation kit to evaluate the  
MAX1858A/MAX1875A/MAX1876A.  
FB2  
ILIM2  
OSC  
V+  
23 DH2  
22  
LX2  
21 BST2  
20 DL2  
Applications  
MAX1858A  
MAX1875A  
MAX1876A  
REF  
19 V  
L
Network Power Supplies  
GND  
CKO  
SYNC  
18 PGND  
17 DL1  
Telecom Power Supplies  
DSP, ASIC, and FPGA Power Supplies  
Set-Top Boxes  
16 BST1  
ILIM1 10  
FB1 11  
15  
14  
LX1  
Broadband Routers  
Servers  
DH1  
COMP1 12  
13 RST (N.C.)  
() ARE FOR THE MAX1875A ONLY  
Desknote Computers  
QSOP  
________________________________________________________________ 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...22

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MAX1858AEEG+ 替代型号

型号 品牌 替代类型 描述 数据表
MAX1858AEEG+T MAXIM

功能相似

 Dual Switching Controller, Voltage-mode, 660kHz Switching Freq-Max, BICMOS, PDSO24, 0.150
MAX1858AEEG MAXIM

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