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MAX1958ETP PDF预览

MAX1958ETP

更新时间： 2024-11-04 23:45:55
品牌 Logo 应用领域
美信 - MAXIM 电信集成电路信息通信管理控制器
页数 文件大小 规格书
24页 795K
描述
SMPS Controller

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中文翻译

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MAX1958ETP 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：QFN
包装说明：HVQCCN,针数：20
Reach Compliance Code：not_compliantHTS代码：8542.39.00.01
风险等级：5.53JESD-30 代码：S-XQCC-N20
JESD-609代码：e0长度：5 mm
湿度敏感等级：1功能数量：1
端子数量：20最高工作温度：85 °C
最低工作温度：-40 °C封装主体材料：UNSPECIFIED
封装代码：HVQCCN封装形状：SQUARE
封装形式：CHIP CARRIER, HEAT SINK/SLUG, VERY THIN PROFILE峰值回流温度（摄氏度）：240
认证状态：Not Qualified座面最大高度：0.8 mm
标称供电电压：3.6 V表面贴装：YES
技术：BICMOS电信集成电路类型：BASEBAND CIRCUIT
温度等级：INDUSTRIAL端子面层：Tin/Lead (Sn85Pb15)
端子形式：NO LEAD端子节距：0.65 mm
端子位置：QUAD处于峰值回流温度下的最长时间：20
宽度：5 mm

MAX1958ETP 数据手册

 浏览型号MAX1958ETP的Datasheet PDF文件第2页浏览型号MAX1958ETP的Datasheet PDF文件第3页浏览型号MAX1958ETP的Datasheet PDF文件第4页浏览型号MAX1958ETP的Datasheet PDF文件第5页浏览型号MAX1958ETP的Datasheet PDF文件第6页浏览型号MAX1958ETP的Datasheet PDF文件第7页 
19-2659; Rev 0; 10/02  
W-CDMA/N-CDMA Cellular Phone HBT PA  
Management ICs  
General Description  
Features  
The MAX1958/MAX1959 power amplifier (PA) power-  
management ICs (PMICs) integrate an 800mA, dynami-  
cally adjustable step-down converter, a 5mA Rail-to-  
Rail® operational amplifier (op amp), and a precision  
temperature sensor to power a heterojunction bipolar  
transistor (HBT) PA in W-CDMA and N-CDMA cell  
phones.  
ꢀ Step-Down Converter  
Dynamically Adjustable Output Voltage from  
0.75V to 3.4V (MAX1958)  
Dynamically Adjustable Output Voltage from  
1V to 3.6V (MAX1959)  
800mA Guaranteed Output Current  
130mV IC Dropout at 600mA Load  
Low Quiescent Current  
The high-efficiency, pulse-width modulated (PWM), DC-  
to-DC buck converter is optimized to provide a guaran-  
teed output current of 800mA. The output voltage is  
dynamically controlled to produce any fixed-output volt-  
age in the range of 0.75V to 3.4V (MAX1958) or 1V to  
3.6V (MAX1959), with settling time less than 30µs for a  
full-scale change in voltage and current. The 1MHz PWM  
switching frequency allows the use of small external  
components while pulse-skip mode reduces quiescent  
current to 190µA with light loads. The converter utilizes a  
low on-resistance internal MOSFET switch and synchro-  
nous rectifier to maximize efficiency and minimize  
external component count. The 100% duty-cycle opera-  
tion allows for an IC dropout voltage of only 130mV (typ)  
at 600mA load.  
190µA (typ) in Skip Mode (MAX1958)  
3mA (typ) in PWM Mode  
0.1µA (typ) in Shutdown Mode  
1MHz Fixed-Frequency PWM operation  
16% to 100% Duty-Cycle Operation  
No External Schottky Diode Required  
Soft-Start  
ꢀ Operational Amplifier  
5mA Rail-to-Rail Output  
Active Discharge in Shutdown  
800kHz Gain-Bandwidth Product  
120dB Open-Loop Voltage Gain (R = 100kΩ)  
L
ꢀ Temperature Sensor  
Accurate Sensor -11.7mV/°C Slope  
-40°C to +125°C-Rated Temperature Range  
The micropower op amp is used to provide bias to the  
HBT PA to maximize efficiency. The amplifier features  
active discharge in shutdown for full PA bias control. It  
has 5mA rail-to-rail drive capability, 800kHz gain-band-  
width product, and 120dB open-loop voltage gain.  
ꢀ 20-Pin Thin QFN (5mm ✕ 5mm), 0.8mm Height (max)  
Ordering Information  
The precision temperature sensor measures tempera-  
tures between -40°C to +125°C, with linear tempera-  
ture-to-voltage analog output characteristics.  
PART  
TEMP RANGE  
-40°C to +85°C  
-40°C to +85°C  
PIN-PACKAGE  
20 Thin QFN-EP*  
20 Thin QFN-EP  
MAX1958ETP  
MAX1959ETP  
The MAX1958/MAX1959 are available in a 20-pin 5mm ✕  
5mm thin QFN package (0.8mm max height).  
*EP = Exposed paddle.  
Pin Configuration  
TOP VIEW  
Applications  
W-CDMA and N-CDMA Cellular Phones  
AOUT  
SHDN2  
AGND  
TOUT  
REF  
1
2
3
4
5
15 PWM  
14 INP  
13 IN  
Wireless PDAs and Modems  
MAX1958/  
MAX1959  
12  
11  
LX  
PGND  
Typical Operating Circuit and Functional Diagram appear at  
end of data sheet.  
THIN QFN  
5mm x 5mm  
Rail-to-Rail is a registered trademark of Nippon Motorola, Ltd.  
________________________________________________________________ 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...24

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