MAXIM MAX1930 Current-Limited Switch for Two USB Ports Data Sheet

19-2385; Rev 2; 11/02

Current-Limited Switch for Two USB Ports

General Description Features

The MAX1930 current-limited 70mΩ switch with built-in Pin Compatible with TPS2010–TPS2013 fault blanking provides an accurate, preset 1.2A to 2.3A

Accurate Current Limit (1.2A min, 2.3A max)

current limit, making it ideal for dual USB applications. Its low quiescent supply current (16µA) and standby

125mΩ (max) High-Side MOSFET

current (1µA) conserve battery power in portable appli-

Short-Circuit and Thermal Protection

cations. The MAX1930 operates with inputs from 2.7V to 5.5V, making it ideal for both 3V and 5V systems.

Undervoltage Lockout

The MAX1930 has several safety features to ensure that

16µA Quiescent Supply Current

the USB port is protected. Built-in thermal-overload protection limits power dissipation and junction tempera- 1µA (max) Standby Supply Current ture. The device also has accurate internal current-limiting

2.7V to 5.5V Supply Range

circuitry to protect the input supply against overload.

UL Recognized: UL# E211395

The MAX1930 is offered in a space-saving 8-pin SO package and operates over the extended (-40°C to +85°C) temperature range.

Applications Ordering Information

Notebook Computers PART TEMP RANGE PIN-PACKAGE

MAX1930ESA -40°C to +85°C 8 SO

USB Ports and Hubs Docking Stations

Pin Configuration Typical Operating Circuit

INPUT

TOP VIEW

2.7V TO 5.5V

IN OUTPUTOUT

GND OUT

MAX1930

OUTIN

MAX1930

IN OUT

OUTNCEN

SO GND

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.