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MAX1876EEG PDF预览

MAX1876EEG

更新时间: 2024-01-23 00:11:33
品牌 Logo 应用领域
美信 - MAXIM 控制器
页数 文件大小 规格书
21页 492K
描述
Dual 180∑ Out-of-Phase PWM Step- Down Controllers with POR

MAX1876EEG 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:8542.31.00.01Factory Lead Time:1 week
风险等级:5.27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 VJESD-30 代码:R-PDSO-G24
JESD-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:0.05 A
封装主体材料:PLASTIC/EPOXY封装代码:SSOP
封装等效代码:SSOP24,.24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 mm

MAX1876EEG 数据手册

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19-2431; Rev 0; 7/02  
Dual 180° Out-of-Phase PWM Step-  
Down Controllers with POR  
General Description  
Features  
The MAX1875/MAX1876 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 MAX1875/MAX1876s)  
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 MAX1875/MAX1876 or a system clock.  
One MAX1875/MAX1876 can be set to generate an in-  
phase, or 90° out-of-phase, clock signal for synchro-  
nization with additional controllers. This allows two  
controllers to operate either as an interleaved two- or  
four-phase system with each output shifted by 90°.  
These devices also feature soft-start and soft-stop.  
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  
The MAX1875/MAX1876 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 during output-  
overload conditions or when output short-circuit faults  
without requiring a current-sense resistor. Adjustable  
foldback current limit reduces power dissipation during  
short-circuit conditions. The MAX1876 includes a  
power-on reset output to signal the system when both  
outputs reach regulation.  
o External SYNC Input  
o Clock Output for Master/Slave Synchronization  
o Soft-Start and Soft-Stop  
o RST Output with 140ms Minimum Delay (MAX1876)  
o Lossless Current Limit (No Sense Resistor)  
Ordering Information  
PART  
TEMP RANGE  
-40°C to +85°C  
-40°C to +85°C  
PIN-PACKAGE  
24 QSOP  
The MAX1875/MAX1876 are available in a 24-pin QSOP  
package. An evaluation kit is available to speed designs.  
MAX1875EEG  
MAX1876EEG  
24 QSOP  
Applications  
Network Power Supplies  
Telecom Power Supplies  
DSP, ASIC, and FPGA Power Supplies  
Set-Top Boxes  
Pin Configuration  
TOP VIEW  
COMP2  
1
2
3
4
5
6
7
8
9
24 EN  
FB2  
ILIM2  
OSC  
V+  
23 DH2  
Broadband Routers  
Servers  
22  
LX2  
21 BST2  
20 DL2  
REF  
MAX1875/  
MAX1876  
19 V  
L
GND  
CKO  
SYNC  
18 PGND  
17 DL1  
Typical Operating Circuit appears at end of data sheet.  
16 BST1  
ILIM1 10  
FB1 11  
15  
14  
LX1  
DH1  
COMP1 12  
13 RST  
(MAX1876 ONLY)  
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.  

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