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General Description
The MAX1693/(MAX1693H)/MAX1694 are current-limit-
ed, 60m
switches with built-in fault blanking. Their
accurate preset current limit of 0.7A to 1.0A makes them
ideally suited for USB applications. Their low quiescent
supply current (14A) and shutdown current (1A) con-
serve battery power in portable applications. The
MAX1693/(MAX1693H)/MAX1694 operate with inputs
from 2.7V to 5.5V, making them ideal for both 3V and 5V
systems.
A fault signal notifies the microprocessor that the inter-
nal current limit has been reached. A 10ms fault-blank-
ing feature allows momentary faults (such as those
caused when hot-swapping into a capacitive load) to be
ignored, thus preventing false alarms to the host system.
This fault blanking also prevents a fault signal from
being issued when the device is powering up.
In the MAX1693/(MAX1693H), an output overcurrent
condition causes the switch to current limit at 0.7A to
1.0A and FAULT to go low after the 10ms blanking peri-
od. When the overcurrent condition is removed, FAULT
returns to its high-impedance state. In the MAX1694,
any overcurrent longer than 10ms will latch the switch
open and set FAULT low. The latch is cleared by cycling
the ON input or by powering up the device again. This
feature saves power by preventing the device from ther-
mally cycling on and off in case of a persistent short-cir-
cuit condition.
The MAX1693/(MAX1693H)/MAX1694 have several
safety features to ensure that the USB port is protected.
Built-in thermal-overload protection limits power dissi-
pation and junction temperatures. All devices have
accurate internal current-limiting circuitry to protect the
input supply against overload. They are available in
space-saving 10-pin MAX packages.
Features
o Accurate Current Limit (0.7A min, 1.0A max)
o Guaranteed 0.75A Short-Circuit Protection
o 10ms Internal Fault-Blanking Timeout
o No Fault Signal During Power-Up
o Latched FAULT Output Turns Off Power Switch
(MAX1694)
o Thermal Shutdown Protection
o 2.7V to 5.5V Supply Range
o 14A Supply Current
o Small 10-Pin MAX Package
o UL Recognized–#E211935
Applications
USB Ports and Hubs
Notebook Computers
Portable Equipment
Docking Stations
Hot Plug-In Power Supplies
Battery-Charger Circuits
MAX1693/(MAX1693H)/MAX1694
USB Current-Limited Switches
with Fault Blanking
_______________________________________________________________ Maxim Integrated Products
1
MAX1693
(MAX1693H)
MAX1694
IN
OUTPUT
OUT
INPUT
2.7V TO 5.5V
FAULT
ON
(OFF)
OFF
GND
(ON)
1
2
3
4
5
10
9
8
7
6
OUT
IN
OUT
FAULT
OUT
IN
OUT
IN
MAX1693
(MAX1693H)
MAX1694
MAX
TOP VIEW
GND
(ON) ON
Typical Operating Circuit
19-1518; Rev 2; 9/01
PART
MAX1693EUB
MAX1693HEUB
-40°C to +85°C
TEMP RANGE
PIN-PACKAGE
10 MAX
Pin Configuration
Ordering Information
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.
MAX1694EUB
-40°C to +85°C
10 MAX
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MAX1694EUB+ 功能描述:电源开关 IC - USB USB Current-Limited Switch w/Fault Blank RoHS:否 制造商:Micrel 电源电压-最小:2.7 V 电源电压-最大:5.5 V 最大工作温度:+ 85 C 最小工作温度:- 40 C 封装 / 箱体:SOIC-8 封装:Tube
MAX1694EUB+T 功能描述:电源开关 IC - USB USB Current-Limited Switch w/Fault Blank RoHS:否 制造商:Micrel 电源电压-最小:2.7 V 电源电压-最大:5.5 V 最大工作温度:+ 85 C 最小工作温度:- 40 C 封装 / 箱体:SOIC-8 封装:Tube
MAX1694EUB-T 功能描述:电源开关 IC - USB USB Current-Limited Switch w/Fault Blank RoHS:否 制造商:Micrel 电源电压-最小:2.7 V 电源电压-最大:5.5 V 最大工作温度:+ 85 C 最小工作温度:- 40 C 封装 / 箱体:SOIC-8 封装:Tube
MAX1694EUB-TG069 制造商:Rochester Electronics LLC 功能描述: 制造商:Maxim Integrated Products 功能描述:
MAX16950AAUE/V+ 功能描述:DC/DC 开关控制器 2MHz Step-Down Controller RoHS:否 制造商:Texas Instruments 输入电压:6 V to 100 V 开关频率: 输出电压:1.215 V to 80 V 输出电流:3.5 A 输出端数量:1 最大工作温度:+ 125 C 安装风格: 封装 / 箱体:CPAK
MAX16950AAUE/V+T 功能描述:DC/DC 开关控制器 2MHz Step-Down Controller RoHS:否 制造商:Texas Instruments 输入电压:6 V to 100 V 开关频率: 输出电压:1.215 V to 80 V 输出电流:3.5 A 输出端数量:1 最大工作温度:+ 125 C 安装风格: 封装 / 箱体:CPAK
MAX16950BAUE/V+ 功能描述:DC/DC 开关控制器 2MHz Step-Down Controller RoHS:否 制造商:Texas Instruments 输入电压:6 V to 100 V 开关频率: 输出电压:1.215 V to 80 V 输出电流:3.5 A 输出端数量:1 最大工作温度:+ 125 C 安装风格: 封装 / 箱体:CPAK
MAX16950BAUE/V+T 功能描述:DC/DC 开关控制器 2MHz Step-Down Controller RoHS:否 制造商:Texas Instruments 输入电压:6 V to 100 V 开关频率: 输出电压:1.215 V to 80 V 输出电流:3.5 A 输出端数量:1 最大工作温度:+ 125 C 安装风格: 封装 / 箱体:CPAK