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参数资料
| 型号： | MAX1978ETM+ |
| 厂商： | Maxim Integrated Products |
| 文件页数： | 10/20页 |
| 文件大小： | 0K |
| 描述： | IC CNTRLR INT TEMP 48TQFN |
| 产品培训模块： | Lead (SnPb) Finish for COTS Obsolescence Mitigation Program |
| 标准包装： | 43 |
| 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： | 48-WFQFN 裸露焊盘 |
| 供应商设备封装： | 48-TQFN-EP（7x7） |
| 包装： | 管件 |
| 产品目录页面： | 1410 (CN2011-ZH PDF) |
MAX1978/MAX1979
Integrated Temperature
Controllers for Peltier Modules
Pin Description (continued)
PIN
23
24
27, 30
28, 31, 33
32, 34
36
37
38
39
40
41
44
45
46
47
48
—
10
NAME
AIN-
AOUT
PV DD 1
LX1
PGND1
FREQ
ITEC
COMP
MAXIP
MAXIN
MAXV
V DD
CTLI
REF
CS
OS1
EP
FUNCTION
Undedicated Chopper-Stabilized Amplifier Inverting Input
Undedicated Chopper-Stabilized Amplifier Output
Power 1 Inputs. Must be same voltage as V DD . Connect all PV DD 1 inputs together at the V DD power plane.
Bypass to PGND1 with a 10μF ceramic capacitor.
Inductor 1 Connection. Connect all LX1 pins together. Connect LX1 to LX2 when using the MAX1979.
Power Ground 1. Internal synchronous-rectifier ground connections. Connect all PGND pins together at
power ground plane.
Switching-Frequency Select. Low = 500kHz, high = 1MHz.
TEC Current Monitor Output. The ITEC output voltage is a function of the voltage across the TEC current-
sense resistor. V ITEC = 1.50V + (V OS1 - V CS ) ? 8.
Current-Control Loop Compensation. For most designs, connect a 10nF capacitor from COMP to GND.
Maximum Positive TEC Current. Connect MAXIP to REF to set default positive current limit +150mV/R SENSE .
Maximum Negative TEC Current. Connect MAXIN to REF to set default negative current limit -150mV /
R SENSE . Connect MAXIN to MAXIP when using the MAX1979.
Maximum Bipolar TEC Voltage. Connect an external resistive divider from REF to GND to set the maximum
voltage across the TEC. The maximum TEC voltage is 4 ? V MAXV .
Analog Supply Voltage Input. Bypass to GND with a 10μF ceramic capacitor.
TEC Current-Control Input. Sets differential current into the TEC. Center point is 1.50V (no TEC current).
Connect to INTOUT when using the thermal control loop. I TEC = (V OS1 - V CS )/R SENSE = (V CTLI - 1.50)/(10 ?
R SENSE ). When (V CLTI - V REF ) > 0, V OS2 > V OS1 > V CS .
1.5V Reference Voltage Output. Bypass REF to GND with a 1μF ceramic capacitor.
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 for the MAX1978. The MAX1979 TEC current is unipolar.
Output Sense 1. OS1 senses one side of the differential TEC voltage. OS1 is a sense point, not a power
output.
Exposed Pad. Solder evenly to the PCB ground plane to maximize thermal performance.
Maxim Integrated
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相关代理商/技术参数 |
参数描述 |
|---|---|
| MAX1978ETM+ | 功能描述:电压模式 PWM 控制器 Integrated Temp Ctlr for Peltier Modules RoHS:否 制造商:Texas Instruments 输出端数量:1 拓扑结构:Buck 输出电压:34 V 输出电流: 开关频率: 工作电源电压:4.5 V to 5.5 V 电源电流:600 uA 最大工作温度:+ 125 C 最小工作温度:- 40 C 封装 / 箱体:WSON-8 封装:Reel |
| MAX1978ETM+T | 功能描述:电压模式 PWM 控制器 Integrated Temp Ctlr for Peltier Modules RoHS:否 制造商:Texas Instruments 输出端数量:1 拓扑结构:Buck 输出电压:34 V 输出电流: 开关频率: 工作电源电压:4.5 V to 5.5 V 电源电流:600 uA 最大工作温度:+ 125 C 最小工作温度:- 40 C 封装 / 箱体:WSON-8 封装:Reel |
| MAX1978ETM-T | 功能描述:电压模式 PWM 控制器 RoHS:否 制造商:Texas Instruments 输出端数量:1 拓扑结构:Buck 输出电压:34 V 输出电流: 开关频率: 工作电源电压:4.5 V to 5.5 V 电源电流:600 uA 最大工作温度:+ 125 C 最小工作温度:- 40 C 封装 / 箱体:WSON-8 封装:Reel |
| MAX1978EVKIT | 功能描述:电源管理IC开发工具 MAX1978 EVAL KIT RoHS:否 制造商:Maxim Integrated 产品:Evaluation Kits 类型:Battery Management 工具用于评估:MAX17710GB 输入电压: 输出电压:1.8 V |
| MAX19790ETX/GH9 | 功能描述:有源衰减器 RoHS:否 制造商:TriQuint Semiconductor 通道数量: 最大频率: 阻抗: 最大 VSWR: 位数: 最大工作温度: 最小工作温度: |
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