MAX1823EUBT Maxim Integrated Products, MAX1823EUBT Datasheet

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MAX1823EUBT

Manufacturer Part Number
MAX1823EUBT
Description
SSOP-8
Manufacturer
Maxim Integrated Products
Datasheet

Specifications of MAX1823EUBT

Date_code
03+
The MAX1823 is a dual, current-limited switch with
autoreset specifically made for USB applications. The
autoreset feature latches the switch off if the output is
shorted, saving system power. The switch reactivates
when the short circuit is removed. Each channel is guar-
anteed to supply 720mA and meet USB specifications.
Low quiescent supply current (50µA) and standby current
(3µA) conserve battery power in portable applications.
The MAX1823 has multiple safety features to ensure
that the USB port is protected. Built-in thermal-overload
protection limits power dissipation and junction temper-
ature. Accurate internal current-limiting circuitry pro-
tects the input supply against both overload and
short-circuit conditions. Independent fault signals
(FAULTA and FAULTB) notify the microprocessor (µP)
when a thermal-overload, current-limit, undervoltage-
lockout (UVLO), or short-circuit fault occurs. A 20ms
fault-blanking feature ignores momentary faults, such
as those caused when hot swapping a capacitive load,
preventing false alarms to the host system. The
MAX1823A/MAX1823B also block reverse current (cur-
rent from OUT_ to IN_) while in shutdown.
The MAX1823 is available in a space-saving 10-pin
µMAX package. The MAX1823/MAX1823A are enabled
with an active-low signal, and the MAX1823B/MAX1823H
are enabled with an active-high signal. For a single ver-
sion of this device, refer to the MAX1946 data sheet. For
a triple version, refer to the MAX1940 data sheet.
19-1903; Rev 3; 10/03
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.
USB Ports and Hubs
Notebook and Desktop Computers
PDAs and Palmtop Computers
Docking Stations
TOP VIEW
*( ) ARE FOR MAX1823B/MAX1823H.
*(ONA) ONA
*(ONB) ONB
________________________________________________________________ Maxim Integrated Products
INA
INB
IN
1
2
3
4
5
General Description
MAX1823H
MAX1823A
MAX1823B
MAX1823
Pin Configuration
MAX
Applications
10
9
8
7
6
FAULTA
OUTA
GND
OUTB
FAULTB
Dual USB Switch with Fault
Blanking and Autoreset
o Dual USB Switch in Tiny 10-Pin µMAX Package
o Autoreset Feature Saves Power
o Guaranteed 720mA Load per Channel
o Built-In 20ms Fault Blanking
o Compliant to USB Specification
o Blocks Reverse Current in Shutdown
o 4V to 5.5V Input Voltage Range
o Independent Shutdown Control
o Independent FAULT Indicator Outputs
o Thermal-Overload Protection
o 50µA Quiescent Current (Both Switches On)
o 3µA Standby Current
o UL Recognized
MAX1823EUB
MAX1823AEUB
MAX1823BEUB
MAX1823HEUB
(MAX1823A/MAX1823B)
4V TO 5.5V
(MAX1823/MAX1823A—Active Low)
(MAX1823B/MAX1823H—Active High)
INPUT
PART
ONA
ONB
Typical Operating Circuit
-40°C to +85°C
-40°C to +85°C
-40°C to +85°C
-40°C to +85°C
TEMP RANGE
Ordering Information
INA
IN
INB
FAULTA
FAULTB
ONA
ONB
MAX1823A
MAX1823
GND
OUTA
OUTB
PIN-PACKAGE
10 µMAX
10 µMAX
10 µMAX
10 µMAX
Features
USB
PORT A
USB
PORT B
1

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