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参数资料
| 型号： | MAX1946ETA+T |
| 厂商： | Maxim Integrated Products |
| 文件页数： | 1/13页 |
| 文件大小： | 0K |
| 描述： | IC USB SW SGL AUTORESET 8TDFN |
| 产品培训模块： | Lead (SnPb) Finish for COTS Obsolescence Mitigation Program |
| 标准包装： | 1 |
| 应用： | USB，外设 |
| 电流 - 电源： | 40µA |
| 电源电压： | 2.7 V ~ 5.5 V |
| 工作温度： | -40°C ~ 85°C |
| 安装类型： | 表面贴装 |
| 封装/外壳： | 8-WDFN 裸露焊盘 |
| 供应商设备封装： | 8-TDFN-EP（3x3） |
| 包装： | 标准包装 |
| 其它名称： | MAX1946ETA+TDKR |
19-2550; Rev 3; 2/10
Single USB Switch with Autoreset and
Fault Blanking in Tiny TDFN
General Description
The MAX1946 single current-limited switch with auto-
reset supplies a guaranteed 500mA load in accordance
with USB specifications. The MAX1946 operates from a
2.7V to 5.5V input supply and consumes only 40μA of
quiescent current when operating and only 3μA in shut-
down. Selectable active-high/active-low control logic
and shutdown control provide additional flexibility. An
autoreset feature latches the switch off in the event of a
short circuit, saving system power. The switch reacti-
vates upon removal of the shorted condition.
The MAX1946 provides several safety features to pro-
tect the USB port. Built-in thermal-overload protection
turns off the switch when the die temperature exceeds
+160 ° C. Accurate internal current-limiting circuitry pro-
tects the input supply against both overload and short-
circuit conditions. An open-drain fault signal, ( FAULT ),
notifies the microprocessor (μP) when a thermal over-
load, current-limit, undervoltage lockout (UVLO), or
short-circuit fault occurs. A 20ms fault-blanking feature
enables the circuit to ignore momentary faults, such as
those caused when hot-swapping a capacitive load,
preventing false alarms to the host system. The fault-
blanking feature prevents fault signals from being
Features
o Single USB Switch in 3mm x 3mm Package
o Autoreset Feature Saves System Power
o Guaranteed 500mA Load Current
o Built-In 20ms Fault-Blanking Circuitry
o Active-High or Active-Low Control Logic
o Fully Compliant to USB Specifications
o 2.7V to 5.5V Input Voltage Range
o Fault-Indicator Output
o Thermal-Overload Protection
Ordering Information
issued when the device powers up the load.
The MAX1946 is available in a space-saving 8-pin
(3mm x 3mm) TDFN package and operates over the
extended (-40 ° C to +85 ° C) temperature range.
PART
MAX1946ETA+
TEMP RANGE
-40°C to +85°C
PIN-
PACKAGE
8 TDFN-EP*
TOP MARK
ACQ
Applications
USB Ports and USB Hubs
Notebook and Desktop Computers
PDAs and Palmtop Computers
Digital Cameras
Docking Stations
Pin Configuration
+Denotes a lead(Pb)-free/RoHS-compliant package.
*EP = Exposed paddle.
Typical Operating Circuit
TOP VIEW
+
FAULT 1
8 SEL
INPUT
2.7V TO 5.5V
IN
GND 2
MAX1946
7 ON
IN
FAULT
OUT 3
OUT 4
6 IN
5 IN
ACTIVE HIGH
ACTIVE LOW
SELECTABLE
ON
SEL
MAX1946
OUT
OUT
GND
TDFN
________________________________________________________________ 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 |
|---|---|
| MAX1946EUA | 制造商:Rochester Electronics LLC 功能描述: 制造商:Maxim Integrated Products 功能描述: |
| MAX1947ETA18 | 制造商:Rochester Electronics LLC 功能描述: 制造商:Maxim Integrated Products 功能描述: |
| MAX1947ETA18+ | 制造商:Maxim Integrated Products 功能描述:CONV DC-DC SGL-OUT STEP UP 8TDFN EP - Rail/Tube |
| MAX1947ETA18+T | 功能描述:直流/直流开关转换器 Step-Up w/RESET DC/DC Converter 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 |
| MAX1947ETA18-T | 功能描述:直流/直流开关转换器 Step-Up w/RESET DC/DC Converter 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 |
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