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参数资料
| 型号： | MAX4789EUK |
| 厂商： | Maxim Integrated Products, Inc. |
| 英文描述： | 200mA/250mA/300mA Current-Limit Switches |
| 中文描述： | 200mA/250mA/300mA限流开关 |
| 文件页数： | 1/12页 |
| 文件大小： | 334K |
| 代理商： | MAX4789EUK |
General Description
The MAX4789–MAX4794 family of switches feature
internal current limiting to prevent damage to host
devices due to faulty load conditions. These analog
switches have a low 0.2
on-resistance and operate
from 2.3V to 5.5V input voltage range. They are avail-
able with guaranteed 200mA, 250mA, and 300mA cur-
rent limits, making them ideal for SDIO and other load
switching applications.
When the switch is on and a load is connected to the
port, a guaranteed blanking time of 14ms ensures that
the transient voltages settle down. If after this blanking
time the load current is greater than the current limit,
the MAX4789, MAX4791, and MAX4793 enter a latch-
off state where the switch is turned off and
FLAG
is
issued to the microprocessor. The switch can be turned
on again by cycling the power or the ON pin.
The MAX4790, MAX4792, and MAX4794 have an
autoretry feature where the switch turns off after the
blanking time and then continuously checks to see if
the overload condition is present. The switch remains
on after the overload condition disappears.
The MAX4789–MAX4794 are available in 6-pin 3mm x
3mm TDFN and tiny space-saving 4-pin SOT143 pack-
ages. The MAX4789/MAX4791/MAX4793 are also avail-
able in a tiny 5-pin SOT23 package. For lower current
current-limiting switches, refer to the MAX4785–MAX4788
data sheet.
Applications
PDAs and Palmtop Devices
Cell Phones
GPS Systems
Hand-Held Devices
SDIO
Features
Guaranteed Current Limit: 200mA, 250mA, 300mA
Thermal-Shutdown Protection
Reverse Current Protection
0.2
On-Resistance
14ms Guaranteed Blanking Time
FLAG
Function (MAX4789/MAX4791/MAX4793)
80μA Supply Current
8μA Latch-Off Current
(MAX4789/MAX4791/MAX4793)
0.01μA Shutdown Current
2.3V to 5.5V Supply Range
Undervoltage Lockout
Fast Current-Limit Response Time (5μs)
TDFN and SOT23/SOT143 Packages
M
200mA/250mA/300mA Current-Limit Switches
________________________________________________________________
Maxim Integrated Products
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.
1
Ordering Information
2.3V TO 5.5V
IN
OUT
FLAG
GND
ON
μ
P
TO SDIO PORT
MAX4789
MAX4791
MAX4793
Typical Operating Circuit
19-2663; Rev 2; 2/05
*
EP = Exposed pad.
Ordering Information continued at end of data sheet.
Selector Guide appears at end of data sheet.
PART
TEMP RANGE
PIN-PACKAGE
TOP
MARK
MAX4789
EUS-T
MAX4789EUK-T
MAX4789ETT
MAX4790
EUS-T
MAX4790ETT
-40°C to +85°C
-40°C to +85°C
-40°C to +85°C
-40°C to +85°C
-40°C to +85°C
4 SOT143-4
5 SOT23-5
6 TDFN-EP*
4 SOT143-4
6 TDFN-EP
KAFE
AEAC
ABO
KAFF
ABP
GND
FLAG
Pin Configurations continued at end of data sheet.
1
5
OUT
IN
MAX4789
MAX4791
MAX4793
SOT23
TOP VIEW
2
3
4
ON
ON
1
4
IN
OUT
MAX4789–
MAX4794
SOT143
2
3
GND
Pin Configurations
相关PDF资料 |
PDF描述 |
|---|---|
| MAX4789EUS | 200mA/250mA/300mA Current-Limit Switches |
| MAX4793EUK | 200mA/250mA/300mA Current-Limit Switches |
| MAX4793EUS | 200mA/250mA/300mA Current-Limit Switches |
| MAX4794EUS | 200mA/250mA/300mA Current-Limit Switches |
| MAX478 | Dual, Single-Supply,Precision Op Amps(单电源，输入失调电压70~250μV,等效输入噪声电压49nV/√Hz,增益带宽积60KHz的运算放大器) |
相关代理商/技术参数 |
参数描述 |
|---|---|
| MAX4789EUK+T | 功能描述:电源开关 IC - 配电 200/250/300mA Crnt Limit Switch RoHS:否 制造商:Exar 输出端数量:1 开启电阻（最大值）:85 mOhms 开启时间（最大值）:400 us 关闭时间（最大值）:20 us 工作电源电压:3.2 V to 6.5 V 电源电流（最大值）: 最大工作温度:+ 85 C 安装风格:SMD/SMT 封装 / 箱体:SOT-23-5 |
| MAX4789EUK-T | 功能描述:电源开关 IC - 配电 RoHS:否 制造商:Exar 输出端数量:1 开启电阻（最大值）:85 mOhms 开启时间（最大值）:400 us 关闭时间（最大值）:20 us 工作电源电压:3.2 V to 6.5 V 电源电流（最大值）: 最大工作温度:+ 85 C 安装风格:SMD/SMT 封装 / 箱体:SOT-23-5 |
| MAX4789EUS | 制造商:Maxim Integrated Products 功能描述:- Cut Tape Product |
| MAX4789EUS-T | 功能描述:电源开关 IC - 配电 RoHS:否 制造商:Exar 输出端数量:1 开启电阻（最大值）:85 mOhms 开启时间（最大值）:400 us 关闭时间（最大值）:20 us 工作电源电压:3.2 V to 6.5 V 电源电流（最大值）: 最大工作温度:+ 85 C 安装风格:SMD/SMT 封装 / 箱体:SOT-23-5 |
| MAX478ACPA | 功能描述:运算放大器 - 运放 RoHS:否 制造商:STMicroelectronics 通道数量:4 共模抑制比（最小值）:63 dB 输入补偿电压:1 mV 输入偏流（最大值）:10 pA 工作电源电压:2.7 V to 5.5 V 安装风格:SMD/SMT 封装 / 箱体:QFN-16 转换速度:0.89 V/us 关闭:No 输出电流:55 mA 最大工作温度:+ 125 C 封装:Reel |
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