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MAX77271EWL+ PDF预览

MAX77271EWL+

更新时间： 2024-09-28 21:06:43
品牌 Logo 应用领域
美信 - MAXIM 信息通信管理开关输出元件
页数 文件大小 规格书
20页 3325K
描述
Switching Regulator, 3750kHz Switching Freq-Max, BICMOS, PBGA9, WLP-9

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中文翻译

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MAX77271EWL+ 技术参数

是否无铅： 不含铅是否Rohs认证： 符合
生命周期：Obsolete包装说明：VFBGA,
Reach Compliance Code：compliantECCN代码：EAR99
HTS代码：8542.39.00.01风险等级：5.83
其他特性：OUTPUT VOLTAGE IS ADJUSTABLE FROM 0.5V TO 5.5V模拟集成电路 - 其他类型：SWITCHING REGULATOR
控制技术：PULSE WIDTH MODULATION最大输入电压：5.5 V
最小输入电压：2.7 V标称输入电压：4 V
JESD-30 代码：S-PBGA-B9长度：1.555 mm
湿度敏感等级：1功能数量：1
端子数量：9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：VFBGA封装形状：SQUARE
封装形式：GRID ARRAY, VERY THIN PROFILE, FINE PITCH峰值回流温度（摄氏度）：NOT SPECIFIED
座面最大高度：0.69 mm表面贴装：YES
切换器配置：BUCK最大切换频率：3750 kHz
技术：BICMOS温度等级：INDUSTRIAL
端子形式：BALL端子节距：0.5 mm
端子位置：BOTTOM处于峰值回流温度下的最长时间：NOT SPECIFIED
宽度：1.555 mmBase Number Matches：1

MAX77271EWL+ 数据手册

 浏览型号MAX77271EWL+的Datasheet PDF文件第2页浏览型号MAX77271EWL+的Datasheet PDF文件第3页浏览型号MAX77271EWL+的Datasheet PDF文件第4页浏览型号MAX77271EWL+的Datasheet PDF文件第5页浏览型号MAX77271EWL+的Datasheet PDF文件第6页浏览型号MAX77271EWL+的Datasheet PDF文件第7页 
MAX77271  
Multimode PA Step-Down Converter  
with Linear Bypass Mode  
General Description  
Features  
The MAX77271 step-down converter is optimized for  
powering the power amplifier (PA) in multistandard hand-  
sets such as LTE, WCDMA, TD-SCDMA, GSM, and  
EDGE. The device integrates a high-efficiency PWM step-  
down converter for medium- and low-power transmission  
with an 85mΩ (typ) low dropout (LDO) bypass regulator,  
in parallel with the step-down converter, enabling high-  
power transmission.  
● PA Step-Down Converter  
• 7µs (typ) Settling Time for 0.7V to 3.4V Output  
Voltage Change  
• Dynamic Output Voltage Setting from 0.5V to V  
• 85mΩ PFET and 100% Duty Cycle for Low  
Dropout  
• 3MHz Switching Frequency  
• Low Output Voltage Ripple  
• 2% Output Voltage Accuracy Over Load, Line,  
and Temperature  
IN  
The IC uses an analog input driven by an external DAC to  
control the output voltage linearly for continuous PA power  
adjustment. The bypass LDO powers the PA directly from  
the battery during high-power transmission or in case of  
insufficient headroom between the input and programmed  
output. The bypass LDO is enabled when the output volt-  
age is greater than 0.65V. In the case where the output  
current exceeds the step-down converter current limit,  
the bypass LDO provides supplementary current to the  
output, ensuring a stable output voltage. The bypass LDO  
also provides a smooth transition between step-down  
regulation and operation in dropout.  
• Tiny External Components  
● 2.5A Output Current Capability  
● Simple Logic On/Off Control  
● Low 0.1µA Shutdown Current  
● 2.7V to 5.5V Supply Voltage Range  
● Thermal Overload Protection  
● 1.6mm x 1.6mm WLP Package (0.69mm max Height)  
● Slot-to-Slot Average Power Tracking for LTE,  
TD-SCDMA, and WCDMA Standards  
The IC is available in a 9-bump, 1.6mm x 1.6mm WLP  
package (0.69mm max height).  
Applications  
Typical Operating Circuit  
● LTE, WCDMA, GSM, and EDGE  
Cell Phones/Smartphones  
MAX77271  
BATTERY  
INPUT  
2.7V TO  
5.5V  
Ordering Information appears at end of data sheet.  
IN2  
OUT  
OUTPUT  
0.5V TO  
1µF  
V
BATT  
UP TO  
2.5A  
BYPASS LDO  
IN1  
4.7µF  
ANALOG  
CONTROL  
0.2V TO  
1.7V  
2.2µH  
REFIN  
LX  
STEP-DOWN  
LOGIC  
1000pF  
4.7µF  
PGND  
AGND  
EN  
ON  
OFF  
2G  
MODE  
3G  
19-6508; Rev 0; 12/12  
1234567...20

中文翻译

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