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| 型号： | MAX8521ETP+T |
| 厂商： | Maxim Integrated Products |
| 文件页数： | 9/18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) |
Smallest TEC Power Drivers for Optical
Modules
Pin Description (continued)
TQFN
PIN
UCSP/WLP
NAME
FUNCTION
TEC Current-Control Input. Sets TEC current. Center point is 1.50V (no TEC current). The
10
A5
CTLI
current is given by:
I TEC = (V OS1 - V CS ) / R SENSE = (V CTLI - 1.50) / (10 x R SENSE ). When (V CTLI - V REF ) > 0V
then V OS2 > V OS1 > V CS .
11
12
A6
B6
GND
V DD
Analog Ground. Star connect to PGND at underside exposed pad for TQFN package.
Analog Supply Voltage Input. Bypass V DD to GND with a 1μF ceramic capacitor.
For MAX8520: Analog FREQ Set Pin (see the Switching Frequency section).
13
C5
FREQ
For MAX8521: Digital FREQ Selection Pin. Connect to V DD for 1MHz operation, connect to
GND for 500kHz operation. The PWM oscillator can synchronize to FREQ by switching at
FREQ between 700kHz and 1.2MHz.
14
15
16
17
18
19
20
—
D6, D5, D4
E5, E6
F5, F6
F4
C6
F3
F1, F2
B2, B5, C3,
C4
B3, B4
E3, E4
—
PGND2
LX2
PVDD2
CS
OS2
OS1
PVDD1
GND2
N.C.
EP
Power Ground 2. Internal synchronous rectifier ground connection. Connect all PGND
pins together at the power ground plane.
Inductor Connection. LX2 is high-impedance in shutdown.
Power Input 2. Connect all PVDD inputs together at the V DD power plane.
Current-Sense Input. The current through the TEC is monitored between CS and OS1. The
maximum TEC current is given by 150mV/R SENSE and is bipolar.
Output Sense 2. OS2 senses one side of the differential TEC voltage. OS2 is a sense
point, not a power output. OS2 discharges to ground in shutdown.
Output Sense 1. OS1 senses one side of the differential TEC voltage. OS1 is a sense
point, not a power output. OS1 discharges to ground in shutdown.
Power Input 1. Connect all PVDD inputs together at the V DD power plane.
Ground. Additional ground pads aid in heat dissipation. Short to either GND or PGND
plane.
No Connect. Connect N.C. pads to GND2 to aid in heat dissipation.
Exposed Paddle (TQFN Only). Internally connected to GND. Connect to a large ground
plane to maximize thermal performance. Not intended as an electrical connection point.
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相关代理商/技术参数 |
参数描述 |
|---|---|
| MAX8521EVKIT | 制造商:Maxim Integrated Products 功能描述:SMALLEST TEC POWER DRIVERS FOR OPTICAL MODULE - Bulk |
| MAX8521EWX+ | 制造商:Maxim Integrated Products 功能描述:SMALLEST TEC POWER DRIVERS FOR OPTICAL MODULES - Rail/Tube |
| MAX8521EWX+T | 功能描述:其他电源管理 TEC Power Driver for Optical Modules 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 |
| MAX8523EEE | 功能描述:直流/直流开关转换器 RoHS:否 制造商:STMicroelectronics 最大输入电压:4.5 V 开关频率:1.5 MHz 输出电压:4.6 V 输出电流:250 mA 输出端数量:2 最大工作温度:+ 85 C 安装风格:SMD/SMT |
| MAX8523EEE+ | 功能描述:功率驱动器IC Gate Driver RoHS:否 制造商:Micrel 产品:MOSFET Gate Drivers 类型:Low Cost High or Low Side MOSFET Driver 上升时间: 下降时间: 电源电压-最大:30 V 电源电压-最小:2.75 V 电源电流: 最大功率耗散: 最大工作温度:+ 85 C 安装风格:SMD/SMT 封装 / 箱体:SOIC-8 封装:Tube |
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