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MAX1858EEG

更新时间： 2024-09-14 22:17:39
品牌 Logo 应用领域
美信 - MAXIM 控制器
页数 文件大小 规格书
21页 535K
描述
Dual 180∑ Out-of-Phase PWM Step-Down Controller with Power Sequencing and POR

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MAX1858EEG 技术参数

是否无铅： 含铅是否Rohs认证： 不符合
生命周期：Obsolete零件包装代码：SOIC
包装说明：0.150 INCH, QSOP-24针数：24
Reach Compliance Code：not_compliantECCN代码：EAR99
HTS代码：8542.39.00.01风险等级：5.19
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：23 V
最小输入电压：4.75 V标称输入电压：12 V
JESD-30 代码：R-PDSO-G24JESD-609代码：e0
长度：8.65 mm湿度敏感等级：1
功能数量：1端子数量：24
最高工作温度：85 °C最低工作温度：-40 °C
最大输出电流：10 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）：240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：PUSH-PULL
最大切换频率：600 kHz技术：BICMOS
温度等级：INDUSTRIAL端子面层：Tin/Lead (Sn85Pb15)
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：20
宽度：3.9 mmBase Number Matches：1

MAX1858EEG 数据手册

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19-2432; Rev 0; 7/02  
Dual 180° Out-of-Phase PWM Step-Down  
Controller with Power Sequencing and POR  
General Description  
Features  
The MAX1858 dual, synchronized, step-down controller  
generates two outputs from input supplies ranging from  
4.75V 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 Two Independent Output Voltages  
o 180° Out-of-Phase Operation  
o 90° Out-of-Phase Operation  
(Using Two MAX1858s)  
o Foldback Current Limit  
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 to another MAX1858 or a system clock. One  
MAX1858 can be set to generate an in-phase, or 90°  
out-of-phase, clock signal for synchronization with addi-  
tional controllers. This allows two controllers to operate  
either as an interleaved two- or four-phase system with  
each output shifted by 90°. The device also features  
“first-on/last-off” power sequencing for compatibility  
with DSPs, ASICs, and FPGAs, as well as soft-start and  
soft-stop to ensure reliable and repeatable power  
sequencing.  
o 4.75V to 23V Input Supply Range  
o 0 to 18V Output-Voltage Range (Up to 10A)  
o >90% Efficiency  
o Fixed-Frequency Pulse-Width Modulation (PWM)  
Operation  
o Adjustable 100kHz to 600kHz Switching  
Frequency  
o External SYNC Input  
o Clock Output for Master/Slave Synchronization  
o Power-On/-Off Sequencing with Soft-Start and  
The MAX1858 eliminates 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 during output-overload condi-  
tions or when output short-circuit faults without requiring a  
current-sense resistor. Adjustable foldback current limit  
reduces power dissipation during short-circuit condition.  
A power-on reset output signals the system when both  
outputs reach regulation.  
Soft-Stop  
o RST Output with 140ms Minimum Delay  
o Lossless Current Limit (No Sense Resistor)  
Ordering Information  
PART  
TEMP RANGE  
PIN-PACKAGE  
The MAX1858 is available in a 24-pin QSOP package.  
An evaluation kit is available to speed designs.  
MAX1858EEG  
-40°C to +85°C  
24 QSOP  
Applications  
Pin Configuration  
Network Power Supplies  
Telecom Power Supplies  
DSP, ASIC, and FPGA Power Supplies  
Set-Top Boxes  
TOP VIEW  
COMP2  
FB2  
1
2
3
4
5
6
7
8
9
24 EN  
23 DH2  
22 LX2  
21 BST2  
20 DL2  
ILIM2  
OSC  
V+  
Broadband Routers  
Servers  
REF  
19 V  
L
MAX1858  
GND  
CKO  
SYNC  
18 PGND  
17 DL1  
16 BST1  
15 LX1  
14 DH1  
13 RST  
Typical Operating Circuit appears at end of data sheet.  
ILIM1 10  
FB1 11  
COMP1 12  
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...21

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MAX1858EEG 替代型号

型号 品牌 替代类型 描述 数据表
MAX1858EEG+ MAXIM

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 Dual Switching Controller, Voltage-mode, 10A, 600kHz Switching Freq-Max, BICMOS, PDSO24, 0
MAX1858EEG-T MAXIM

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 Dual Switching Controller, Voltage-mode, 10A, 600kHz Switching Freq-Max, BICMOS, PDSO24, 0
MAX1858EEG+T MAXIM

功能相似

 Dual Switching Controller, Voltage-mode, 10A, 600kHz Switching Freq-Max, BICMOS, PDSO24, 0

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