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MAX1973EUB+ PDF预览

MAX1973EUB+

更新时间: 2024-09-16 20:03:39
品牌 Logo 应用领域
美信 - MAXIM 信息通信管理开关光电二极管
页数 文件大小 规格书
15页 331K
描述
Switching Regulator, Current-mode, 2.4A, 1600kHz Switching Freq-Max, BICMOS, PDSO10, MICRO, SOP-10

MAX1973EUB+ 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:SOIC
包装说明:TSSOP,针数:10
Reach Compliance Code:compliantECCN代码:EAR99
HTS代码:8542.39.00.01Factory Lead Time:6 weeks
风险等级:1.42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 VJESD-30 代码:S-PDSO-G10
JESD-609代码:e3长度:3 mm
湿度敏感等级:1功能数量:1
端子数量:10最高工作温度:85 °C
最低工作温度:-40 °C最大输出电流:2.4 A
封装主体材料:PLASTIC/EPOXY封装代码:TSSOP
封装形状:SQUARE封装形式:SMALL OUTLINE, THIN PROFILE, SHRINK PITCH
峰值回流温度(摄氏度):260认证状态:Not Qualified
座面最大高度:1.1 mm表面贴装:YES
切换器配置:BUCK最大切换频率:1600 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:0.5 mm端子位置:DUAL
处于峰值回流温度下的最长时间:30宽度:3 mm
Base Number Matches:1

MAX1973EUB+ 数据手册

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19-2547; Rev 0; 7/02  
Smallest 1A, 1.4MHz Step-Down Regulators  
General Description  
Features  
o Tiny Circuit Footprint of 0.19in2  
o Ultra-Low Circuit Height of 1.8mm  
The MAX1973/MAX1974 are constant-frequency  
1.4MHz pulse-width-modulated (PWM) current-mode  
step-down regulators. The output voltage can be set as  
low as 0.75V using an external voltage-divider, or it can  
be set to preset outputs of 1V, 1.5V (MAX1974), 1.8V,  
or 2.5V (MAX1973) without requiring external resistors.  
The MAX1973 also includes a voltage-margining fea-  
ture that offsets the output voltage up or down 4% to  
facilitate board-level production testing.  
o 4.7µF Ceramic Input and Output Capacitors  
o 2.6V to 5.5V Input Voltage  
o 1A Output Current  
o 1% Accurate  
A fixed 1.4MHz operating frequency ensures operation  
outside the DSL frequency band, provides fast transient  
response, and allows the use of small external compo-  
nents. Only 4.7µF input and output ceramic capacitors  
are needed for 1A applications. Forced PWM operation  
ensures a constant switching frequency over all load  
conditions.  
o Built-In 4% Logic-Controlled Voltage ꢀargining  
(ꢀAX1973)  
o Preset 1V, 1.5V, 1.8V, 2.5V, or 0.75V to V  
IN  
Adjustable Output  
o Fixed-Frequency PWꢀ Current-ꢀode Operation  
o 1.4ꢀHz Switching Frequency, Operate Outside  
Output voltage accuracy is 1% over load, line, and  
temperature operating ranges. The MAX1973 features  
voltage margining; the MAX1974 provides a POK out-  
put to indicate when the output has reached 90% of its  
nominal regulation voltage. Both devices are available  
in small 10-pin µMAX packages.  
DSL Band  
o 100% Duty-Cycle Dropout Capability  
o Small External Components  
Applications  
Ordering Information  
Network Equipment  
PART  
TEꢀP RANGE  
-40°C to +85°C  
-40°C to +85°C  
PIN-PACKAGE  
10 µMAX  
Cellular Base Stations  
ꢀAX1973EUB  
ꢀAX1974EUB  
DSL and Wireless Modems/Routers  
Optical Modules  
10 µMAX  
Central-Office DSL and Telecom  
DSP/ASIC Core and IO supplies  
Pin Configurations  
TOP VIEW  
Selector Guide appears at end of data sheet.  
FBSEL  
COMP  
FB  
1
2
3
4
5
10 CTL1  
Typical Operating Circuit  
9
8
7
6
IN  
MAX1973  
LX  
SS  
PGND  
CTL2  
OUTPUT  
INPUT  
2.6V TO 5.5V  
1.25V TO V  
1A  
IN  
GND  
IN  
LX  
FB  
µꢀAX  
COMP  
FBSEL  
COMP  
FB  
1
2
3
4
5
10 ON  
FBSEL MAX1973  
CTL1  
CTL2  
VOLTAGE  
MARGINING  
ON/OFF  
9
8
7
6
IN  
SS  
MAX1974  
LX  
GND  
PGND  
SS  
PGND  
POK  
GND  
MAX1974 OUTPUT DOWN TO 0.75V  
µꢀAX  
________________________________________________________________ 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.  

MAX1973EUB+ 替代型号

型号 品牌 替代类型 描述 数据表
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