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MAX8520ETP+T

更新时间： 2024-11-18 13:11:07
品牌 Logo 应用领域
美信 - MAXIM 驱动器
页数 文件大小 规格书
19页 605K
描述
Interface Circuit, BICMOS, 5 X 5 MM, 0.80 MM HEIGHT, TQFN-20

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MAX8520ETP+T 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：QFN
包装说明：VQCCN,针数：20
Reach Compliance Code：compliantECCN代码：EAR99
HTS代码：8542.39.00.01Factory Lead Time：6 weeks
风险等级：0.8Is Samacsys：N
接口集成电路类型：INTERFACE CIRCUITJESD-30 代码：S-XQCC-N20
JESD-609代码：e3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：VQCCN封装形状：SQUARE
封装形式：CHIP CARRIER, VERY THIN PROFILE峰值回流温度（摄氏度）：260
认证状态：Not Qualified座面最大高度：0.8 mm
最大供电电压：5.5 V最小供电电压：3 V
标称供电电压：5 V表面贴装：YES
技术：BICMOS温度等级：INDUSTRIAL
端子面层：Matte Tin (Sn)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：NOT SPECIFIED宽度：5 mm
Base Number Matches：1

MAX8520ETP+T 数据手册

 浏览型号MAX8520ETP+T的Datasheet PDF文件第2页浏览型号MAX8520ETP+T的Datasheet PDF文件第3页浏览型号MAX8520ETP+T的Datasheet PDF文件第4页浏览型号MAX8520ETP+T的Datasheet PDF文件第5页浏览型号MAX8520ETP+T的Datasheet PDF文件第6页浏览型号MAX8520ETP+T的Datasheet PDF文件第7页 
19-2586; Rev 0; 10/02  
Smallest TEC Power Drivers for  
Optical Modules  
General Description  
Features  
o Circuit Footprint of 0.31in2  
o Low-Profile Design  
The MAX8520/MAX8521 are designed to drive thermo-  
electric coolers (TECs) in space-constrained optical  
modules. Both devices deliver 1.5A output current  
and control the TEC current to eliminate harmful current  
surges. On-chip FETs minimize external components and  
high switching frequency reduces the size of external  
components.  
o On-Chip Power MOSFETs  
o High-Efficiency Switch-Mode Design  
o Ripple Cancellation for Low Noise  
The MAX8520 and MAX8521 operate from a single supply  
and bias the TEC between the outputs of two synchro-  
nous buck regulators. This operation allows for temper-  
ature control without “dead zones” or other nonlinearities  
at low current. This arrangement ensures that the control  
system does not hunt when the set point is very close to  
the natural operating point, requiring a small amount of  
heating or cooling. An analog control signal precisely  
sets the TEC current.  
o Direct Current Control Prevents TEC Current  
Surges  
o 5% Accurate Adjustable Heating/Cooling Current  
Limits  
o 2% Accurate TEC Voltage Limit  
o No Dead Zone or Hunting at Low Output Current  
o ITEC Monitors TEC Current  
Both devices feature accurate, individually adjustable  
heating current limit and cooling current limit, along  
with maximum TEC voltage limit to improve the reliability  
of optical modules. An analog output signal monitors  
the TEC current. A unique ripple cancellation scheme  
helps reduce noise.  
o 1% Accurate Voltage Reference  
o Switching Frequency Up to 1MHz  
o Synchronization (MAX8521)  
The MAX8520 is available in a 5mm x 5mm thin QFN  
package and its switching frequency is adjustable up to  
1MHz through an external resistor. The MAX8521 is also  
available in a 5mm x 5mm thin QFN, as well as a space-  
saving 3mm x 3mm UCSP™, with a pin-selectable  
switching frequency of 500kHz or 1MHz.  
Ordering Information  
PART  
TEMP RANGE  
PIN-PACKAGE  
MAX8520ETP -40°C to +85°C  
MAX8521EBX -40°C to +85°C  
20 Thin QFN 5mm x 5mm  
36 UCSP 3mm x 3mm  
20 Thin QFN 5mm x 5mm  
Applications  
MAX8521ETP  
-40°C to +85°C  
SFF/SFP Modules  
Fiber-Optic Laser Modules  
Fiber-Optic Network Equipment  
ATE  
Typical Operating Circuit  
Biotech Lab Equipment  
INPUT  
V
LX1  
PGND1  
CS  
DD  
PV  
3V TO 5.5V  
DD  
FREQ  
ON  
SHDN  
ITEC  
OFF  
TEC CURRENT  
MONITOR  
MAX8521  
OUTPUT  
OS1  
CURRENT-  
CONTROL  
SIGNAL  
CTLI  
I
= 1.5A  
TEC  
TEC  
OS2  
LX2  
COMP  
REF  
PGND2  
GND  
Pin Configurations appear at end of data sheet.  
ANALOG /DIGITAL  
TEMPERATURE CONTROL  
UCSP is a trademark of Maxim Integrated Products, Inc.  
________________________________________________________________ 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.  
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