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MAX7370EWA+T

更新时间： 2024-11-30 12:58:07
品牌 Logo 应用领域
美信 - MAXIM 驱动器开关控制器
页数 文件大小 规格书
37页 1917K
描述
Interface Circuit, BICMOS, PBGA25, 2.159 X 2.159 MM, ROHS COMPLIANT, WLP-25

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MAX7370EWA+T 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：compliant风险等级：5.61
接口集成电路类型：INTERFACE CIRCUITJESD-30 代码：S-PBGA-B25
长度：2.09 mm功能数量：1
端子数量：25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最大供电电压：3.6 V
最小供电电压：1.62 V标称供电电压：3.3 V
电源电压1-最大：3.6 V电源电压1-分钟：1.62 V
电源电压1-Nom：3.3 V表面贴装：YES
技术：BICMOS温度等级：INDUSTRIAL
端子形式：BALL端子节距：0.4 mm
端子位置：BOTTOM处于峰值回流温度下的最长时间：NOT SPECIFIED
宽度：2.09 mmBase Number Matches：1

MAX7370EWA+T 数据手册

 浏览型号MAX7370EWA+T的Datasheet PDF文件第2页浏览型号MAX7370EWA+T的Datasheet PDF文件第3页浏览型号MAX7370EWA+T的Datasheet PDF文件第4页浏览型号MAX7370EWA+T的Datasheet PDF文件第5页浏览型号MAX7370EWA+T的Datasheet PDF文件第6页浏览型号MAX7370EWA+T的Datasheet PDF文件第7页 
19-5950; Rev 0; 6/11  
E V A L U A T I O N K I T A V A I L A B L E  
General Description  
Features  
2
S Monitors Up to 64 Keys  
The MAX7370 I C-interfaced peripheral provides micro-  
processors with management of up to 64 key switches,  
with optional GPIO and PWM-controlled LED drivers.  
S Integrated High-ESD Protection  
±±8k IEC 61000-4-2 Contact Discharge  
±148k IEC 61000-4-2 Air-Gap Discharge  
The key-switch drivers interface with metallic or resistive  
switches with on-resistances up to 5kI. Key inputs are  
monitored statically, not dynamically, to ensure low-EMI  
operation. The IC features autosleep and autowake  
modes to further minimize the power consumption of  
the device. The autosleep feature puts the device in a  
low-power state (1µA typ) after a timeout period. The  
autowake feature configures the device to return to  
normal operating mode from sleep upon a keypress.  
S Keyscan Uses Static Matrix Monitoring for  
Low-EMI Operation  
S Four LED Driver Pins on COL7–COL4  
S 5k Tolerant, Open-Drain I/O Ports Capable of  
Constant-Current LED Drive  
S 256-Step PWM Individual LED Intensity-Control  
Accuracy  
S Individual LED Blin8 Rates and Common LED  
The key controller debounces and maintains a FIFO  
buffer of keypress and release events (including auto-  
repeat, if enabled). An interrupt (INT) output can be  
configured to alert keypresses, as they occur, or at the  
maximum rate.  
Fade In/Out Rates from 256ms to 4096ms  
S FIFO Queues Up to 16 Debounced Key Events  
S User-Configurable Keypress and Release  
Debounce Time (2ms to 32ms)  
The same index rows and columns in the device can be  
used as a direct logic-level translator.  
S Key-Switch Interrupt (INT) on Each Debounced  
Event/FIFO Level, or End-of-Definable Time Period  
If the device is not used for key-switch control, all  
keyboard pins can be used as GPIOs. Each GPIO can  
be programmed to one of the two externally applied  
logic voltage levels. Four column ports (COL7–COL4)  
can also be configured as LED drivers that feature  
constant-currentandPWMintensitycontrol. Themaximum  
constant-current level for each open-drain LED port is  
20mA. The intensity of the LED on each open-drain port  
can be individually adjusted through a 256-step PWM  
control.  
S 1.62k to 3.6k Operating Supply koltage  
S Individually Programmable GPIOs to Two Logic  
Levels  
S ±-Channel Individual Programmable Level  
Translators  
S Provides Optional GPIOs on all ROW� and COL�  
Pins  
S Supports Hot Insertion  
S 4008bps, 5.5k Tolerant I2C Serial Interface with  
Selectable Bus Timeout  
The device is offered in a 24-pin (3.5mm x 3.5mm) TQFN  
package with an exposed pad, and small 25-bump  
(2.159mm x 2.159mm) wafer-level package (WLP) for  
cell phones, pocket PCs, and other portable consumer  
electronic applications.  
Ordering Information appears at end of data sheet.  
Typical Operating Circuit  
+5V  
+1.8V  
+2.6V  
The device operates over the -40°C to +85°C extended  
temperature range.  
V
V
LA  
CC  
Applications  
MAX7370  
COL4  
COL5  
COL6  
COL7  
Cell Phones  
INT  
I/O  
I/O  
Notebooks  
SDA  
SCL  
MCU  
PDAs  
8
4
AD0  
ROW[0:7]  
COL[0:3]  
Handheld Games  
Portable Consumer Electronics  
GND  
For related parts and recommended products to use with this part,  
32 KEYS  
refer to www.maxim-ic.com/MAX7370.related.  
����������������������������������������������������������������� Maxim Integrated Products  
1
For pricing, delivery, and ordering information, please contact Maxim Direct at 1-±±±-629-4642,  
or visit Maxim’s website at www.maxim-ic.com.  
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