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MAX8505

更新时间： 2024-02-10 05:08:21
品牌 Logo 应用领域
美信 - MAXIM 稳压器开关
页数 文件大小 规格书
15页 291K
描述
3A. 1MHz. 1% Accurate. Internal Switch Step-Down Regulator with Power-OK

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中文翻译

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MAX8505 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：SSOP
包装说明：0.150 INCH, 0.25 INCH PITCH, MO-137AB, QSOP-16针数：16
Reach Compliance Code：not_compliantECCN代码：EAR99
HTS代码：8542.39.00.01风险等级：5.23
模拟集成电路 - 其他类型：SWITCHING REGULATOR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：2.6 V标称输入电压：3.3 V
JESD-30 代码：R-PDSO-G16JESD-609代码：e0
长度：4.9 mm湿度敏感等级：1
功能数量：1端子数量：16
最高工作温度：85 °C最低工作温度：-40 °C
最大输出电流：3 A封装主体材料：PLASTIC/EPOXY
封装代码：SSOP封装等效代码：SSOP16,.25
封装形状：RECTANGULAR封装形式：SMALL OUTLINE, SHRINK PITCH
峰值回流温度（摄氏度）：245认证状态：Not Qualified
座面最大高度：1.75 mm子类别：Switching Regulator or Controllers
表面贴装：YES切换器配置：BUCK
最大切换频率：1150 kHz技术：BICMOS
温度等级：INDUSTRIAL端子面层：TIN LEAD
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 mmBase Number Matches：1

MAX8505 数据手册

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19-2992; Rev 0; 10/03  
3A, 1MHz, 1% Accurate, Internal Switch  
Step-Down Regulator with Power-OK  
General Description  
Features  
The MAX8505 step-down regulator operates from a 2.6V  
to 5.5V input and generates an adjustable output voltage  
from 0.8V to 0.85 ✕ VIN at up to 3A. With a 2.6V to 5.5V  
bias supply, the input voltage can be as low as 2.25V.  
ꢀ Saves Space—4.9mm x 6mm Footprint, 1µH  
Inductor, 47µF Ceramic Output Capacitor  
ꢀ Input Voltage Range  
2.6V to 5.5V  
The MAX8505 integrates power MOSFETs and  
operates at 1MHz/500kHz switching frequency to  
provide a compact design. Current-mode pulse-width-  
modulated (PWM) control simplifies compensation with  
ceramic or polymer output capacitors and provides  
excellent transient response.  
Down to 2.25V with Bias Supply  
ꢀ 0.8V to 0.85 ✕ V , 3A Output  
IN  
ꢀ Ceramic or Polymer Capacitors  
ꢀ
1ꢀ Output Accuracy Over ꢁoad, ꢁine, and  
Temperature  
The MAX8505 features 1% accurate output over load,  
line, and temperature variations. Adjustable soft-start is  
achieved with an external capacitor. During the  
soft-start period, the voltage-regulation loop is active.  
This limits the voltage dip when the active devices,  
such as microprocessors or ASICs connected to the  
MAX8505’s output, apply a sudden load current step  
upon passing their undervoltage thresholds.  
ꢀ Fast Transient Response  
ꢀ Adjustable Soft-Start  
ꢀ In-Regulation Soft-Start ꢁimits Output-Voltage  
Dips at Power-On  
ꢀ POK Monitors Output Voltage  
The MAX8505 features current-limit, short-circuit, and  
thermal-overload protection and enables a rugged  
design. Open-drain power-OK (POK) monitors the  
output voltage.  
Ordering Information  
PART  
TEMP RANGE  
PIN-PACKAGE  
Applications  
µP/ASIC/DSP/FPGA Core and I/O Supplies  
MAX8505EEE  
-40°C to +85°C  
16 QSOP  
Chipset Supplies  
Functional Diagram appears at end of data sheet.  
Server, RAID, and Storage Systems  
Network and Telecom Equipment  
Pin Configuration  
Typical Operating Circuit  
TOP VIEW  
LX  
1
2
3
4
5
6
7
8
16 LX  
BST  
OUTPUT  
0.8V TO  
INPUT  
2.6V TO 5.5V  
IN  
LX  
15 PGND  
14 LX  
IN  
LX  
0.85 x V  
3A  
IN  
MAX8505  
IN  
MAX8505  
13 PGND  
12 GND  
11 REF  
10 FB  
PGND  
V
CC  
BST  
FB  
V
CC  
COMP  
REF  
ENABLE  
POWER-OK  
CTL  
POK  
POK  
CTL  
9
COMP  
GND  
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...15

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