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| 型号： | MAX8520ETP+T |
| 厂商： | Maxim Integrated Products |
| 文件页数： | 1/18页 |
| 文件大小： | 0K |
| 描述： | IC DRVR PWR TEC 20-TQFN |
| 产品培训模块： | Lead (SnPb) Finish for COTS Obsolescence Mitigation Program |
| 标准包装： | 2,500 |
| 应用： | 热电冷却器 |
| 电源电压： | 3 V ~ 5.5 V |
| 工作温度： | -40°C ~ 85°C |
| 安装类型： | 表面贴装 |
| 封装/外壳： | 20-WQFN 裸露焊盘 |
| 供应商设备封装： | 20-TQFN-EP（5x5） |
| 包装： | 带卷 (TR) |
ATION
EVALU
AVAIL
19-2586; Rev 2; 2/11
KIT
ABLE
Smallest TEC Power Drivers for Optical
Modules
General Description
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 exter-
nal components.
The MAX8520/MAX8521 operate from a single supply and
bias the TEC between the outputs of two synchronous
buck regulators. This operation allows for temperature
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.
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.
The MAX8520 is available in a 5mm x 5mm TQFN pack-
Features
o Circuit Footprint 0.31in 2
o Low Profile Design
o On-Chip Power MOSFETs
o High-Efficiency Switch-Mode Design
o Ripple Cancellation for Low Noise
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
o 1% Accurate Voltage Reference
o Switching Frequency up to 1MHz
o Synchronization (MAX8521)
Ordering Information
age and its switching frequency is adjustable up to
PART
TEMP RANGE
PIN-PACKAGE
1MHz through an external resistor. The MAX8521 is
also available in a 5mm x 5mm TQFN as well as
space-saving 3mm x 3mm UCSP? and 36-bump WLP
(3mm x 3mm) packages, with a pin-selectable switch-
ing frequency of 500kHz or 1MHz.
MAX8520 ETP+
MAX8521 EBX
MAX8521ETP+
MAX8521EWX+
-40 ° C to +85 ° C 20 TQFN-EP* 5mm x 5mm
-40 ° C to +85 ° C 6 x 6 UCSP 3mm x 3mm
-40 ° C to +85 ° C 20 TQFN-EP* 5mm x 5mm
-40 ° C to +85 ° C 36 WLP** 3mm x 3mm
Applications
SFF/SFP Modules
Fiber Optic Laser Modules
Fiber Optic Network Equipment
ATE
+Denotes a lead(Pb)-free/RoHS-compliant package.
*EP = Exposed pad.
**Four center bumps depopulated.
Typical Operating Circuit
Biotech Lab Equipment
INPUT
3V TO 5.5V
V DD
PVDD_
FREQ
LX1
PGND1
ON
OFF
TEC CURRENT
MONITOR
SHDN
ITEC MAX8521
CS
CURRENT-
CONTROL
SIGNAL
CTLI
COMP
OS1
OS2
LX2
TEC
OUTPUT
I TEC = ± 1.5A
REF
GND
PGND2
Pin Configurations appear at end of data sheet
ANALOG /DIGITAL
TEMPERATURE CONTROL
UCSP is a trademark of Maxim Integrated Products, Inc.
________________________________________________________________ Maxim Integrated Products
For pricing, delivery, and ordering information, please contact Maxim Direct at 1-888-629-4642,
or visit Maxim’s website at www.maxim-ic.com.
1
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相关代理商/技术参数 |
参数描述 |
|---|---|
| MAX8520EVKIT | 制造商:Maxim Integrated Products 功能描述:SMALLEST TEC POWER DRIVERS FOR OPTI - Rail/Tube |
| MAX8521EBX | 制造商:Maxim Integrated Products 功能描述:SMALLEST TEC POWER DRIVERS FOR OPTICAL MODULE - Rail/Tube |
| MAX8521EBX+T | 功能描述:其他电源管理 RoHS:否 制造商:Texas Instruments 输出电压范围: 输出电流:4 mA 输入电压范围:3 V to 3.6 V 输入电流: 功率耗散: 工作温度范围:- 40 C to + 110 C 安装风格:SMD/SMT 封装 / 箱体:VQFN-48 封装:Reel |
| MAX8521EBX-T | 功能描述:其他电源管理 RoHS:否 制造商:Texas Instruments 输出电压范围: 输出电流:4 mA 输入电压范围:3 V to 3.6 V 输入电流: 功率耗散: 工作温度范围:- 40 C to + 110 C 安装风格:SMD/SMT 封装 / 箱体:VQFN-48 封装:Reel |
| MAX8521ETP | 功能描述:其他电源管理 RoHS:否 制造商:Texas Instruments 输出电压范围: 输出电流:4 mA 输入电压范围:3 V to 3.6 V 输入电流: 功率耗散: 工作温度范围:- 40 C to + 110 C 安装风格:SMD/SMT 封装 / 箱体:VQFN-48 封装:Reel |
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