MAX1930 Datasheet, PDF (1/7 Pages) Maxim Integrated Products – Current-Limited Switch for Two USB Ports

19-2385; Rev 2; 11/02
Current-Limited Switch for Two USB Ports
General Description
The MAX1930 current-limited 70mΩ switch with built-in
fault blanking provides an accurate, preset 1.2A to 2.3A
current limit, making it ideal for dual USB applications.
Its low quiescent supply current (16µA) and standby
current (1µA) conserve battery power in portable appli-
cations. The MAX1930 operates with inputs from 2.7V to
5.5V, making it ideal for both 3V and 5V systems.
The MAX1930 has several safety features to ensure that
the USB port is protected. Built-in thermal-overload
protection limits power dissipation and junction tempera-
ture. The device also has accurate internal current-limiting
circuitry to protect the input supply against overload.
The MAX1930 is offered in a space-saving 8-pin SO
package and operates over the extended (-40°C to
+85°C) temperature range.
Features
o Pin Compatible with TPS2010–TPS2013
o Accurate Current Limit (1.2A min, 2.3A max)
o 125mΩ (max) High-Side MOSFET
o Short-Circuit and Thermal Protection
o Undervoltage Lockout
o 16µA Quiescent Supply Current
o 1µA (max) Standby Supply Current
o 2.7V to 5.5V Supply Range
o UL Recognized: UL# E211395
Notebook Computers
USB Ports and Hubs
Docking Stations
Applications
PART
MAX1930ESA
Ordering Information
TEMP RANGE
-40°C to +85°C
PIN-PACKAGE
8 SO
Pin Configuration
TOP VIEW
GND 1
IN 2
IN 3
EN 4
MAX1930
8 OUT
7 OUT
6 OUT
5 OUTNC
SO
Typical Operating Circuit
INPUT
2.7V TO 5.5V
IN
OUT
MAX1930
OUTPUT
OFF
ON
EN
GND
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