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MAX1922ETB+T

Description
usb switch ics 1A crnt-ltd switch for 2 usb ports
CategoryPower/power management    The power supply circuit   
File Size179KB,9 Pages
ManufacturerMaxim
Websitehttps://www.maximintegrated.com/en.html
Environmental Compliance
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MAX1922ETB+T Overview

usb switch ics 1A crnt-ltd switch for 2 usb ports

MAX1922ETB+T Parametric

Parameter NameAttribute value
Is it Rohs certified?conform to
MakerMaxim
package instructionHVSON,
Reach Compliance Codecompli
ECCN codeEAR99
Factory Lead Time6 weeks
Analog Integrated Circuits - Other TypesPOWER SUPPLY SUPPORT CIRCUIT
JESD-30 codeS-PDSO-N10
JESD-609 codee3
length3 mm
Humidity sensitivity level1
Number of channels1
Number of functions1
Number of terminals10
Maximum operating temperature85 °C
Minimum operating temperature-40 °C
Package body materialPLASTIC/EPOXY
encapsulated codeHVSON
Package shapeSQUARE
Package formSMALL OUTLINE, HEAT SINK/SLUG, VERY THIN PROFILE
Maximum seat height0.8 mm
Maximum supply voltage (Vsup)5.5 V
Minimum supply voltage (Vsup)2.7 V
Nominal supply voltage (Vsup)5 V
surface mountYES
technologyBICMOS
Temperature levelINDUSTRIAL
Terminal surfaceMatte Tin (Sn)
Terminal formNO LEAD
Terminal pitch0.5 mm
Terminal locationDUAL
width3 mm
19-2254; Rev 3; 4/09
1A Current-Limited Switch for 2 USB Ports
General Description
The MAX1922 current-limited 70mΩ switch with built-in
fault blanking provides an accurate, preset 1.4A to 2.1A
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 MAX1922 operates with inputs from 2.7V
to 5.5V, making it ideal for both 3V and 5V systems.
An overcurrent signal (OC) notifies the microprocessor
that the internal current limit has been reached. A 10ms
overcurrent-blanking 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 blanking also prevents
an
OC
signal from being issued when the device is
powering up.
The MAX1922 has several safety features to ensure that
the USB port is protected. Built-in thermal-overload pro-
tection limits power dissipation and junction tempera-
ture. The device also has accurate internal current-
limiting circuitry to protect the input supply against
overload.
The MAX1922 is offered in a space-saving 8-pin SO
package and a 10-pin TDFN package and operates over
the extended (-40°C to +85°C) temperature range.
PART
MAX1922ESA+
MAX1922ETB+
Features
o
Accurate Current Limit (1.4A min, 2.1A max)
o
10ms Internal
OC
Blanking Timeout
o
OC
Blanking During Power-Up
o
125mΩ (max) High-Side MOSFET
o
Short-Circuit and Thermal Protection with
Overcurrent Logic Output
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
MAX1922
Ordering Information
TEMP RANGE
-40°C to +85°C
-40°C to +85°C
PIN-
PACKAGE
8 SO
10 TDFN-EP*
TOP
MARK
AQQ
Applications
Notebook Computers
USB Ports
USB Hubs
Docking Stations
*EP
= Exposed paddle.
+Denotes
a lead(Pb)-free/RoHS-compliant package.
Pin Configurations
TOP VIEW
INPUT
2.7V TO 5.5V
Typical Operating Circuit
IN
GND
IN
IN
1
2
8
7
OUT
OUT
OUTPUT
MAX1922
OUT
OUT
OC
ON
OFF
EN
GND
OC
MAX1922
3
6
5
EN
4
SO
Pin Configurations continued at end of data sheet.
________________________________________________________________
Maxim Integrated Products
1
For pricing, delivery, and ordering information, please contact Maxim Direct at 1-888-629-4642,
or visit Maxim’s website at www.maxim-ic.com.

MAX1922ETB+T Related Products

MAX1922ETB+T MAX1922ESA+T
Description usb switch ics 1A crnt-ltd switch for 2 usb ports usb switch ics 1A crnt-ltd switch for 2 usb ports
Is it Rohs certified? conform to conform to
package instruction HVSON, SOP, SOP8,.25
Reach Compliance Code compli compliant
ECCN code EAR99 EAR99
Analog Integrated Circuits - Other Types POWER SUPPLY SUPPORT CIRCUIT POWER SUPPLY SUPPORT CIRCUIT
JESD-30 code S-PDSO-N10 R-PDSO-G8
JESD-609 code e3 e3
length 3 mm 4.9 mm
Humidity sensitivity level 1 1
Number of channels 1 1
Number of functions 1 1
Number of terminals 10 8
Maximum operating temperature 85 °C 85 °C
Minimum operating temperature -40 °C -40 °C
Package body material PLASTIC/EPOXY PLASTIC/EPOXY
encapsulated code HVSON SOP
Package shape SQUARE RECTANGULAR
Package form SMALL OUTLINE, HEAT SINK/SLUG, VERY THIN PROFILE SMALL OUTLINE
Maximum seat height 0.8 mm 1.75 mm
Maximum supply voltage (Vsup) 5.5 V 5.5 V
Minimum supply voltage (Vsup) 2.7 V 2.7 V
Nominal supply voltage (Vsup) 5 V 5 V
surface mount YES YES
technology BICMOS BICMOS
Temperature level INDUSTRIAL INDUSTRIAL
Terminal surface Matte Tin (Sn) Matte Tin (Sn)
Terminal form NO LEAD GULL WING
Terminal pitch 0.5 mm 1.27 mm
Terminal location DUAL DUAL
width 3 mm 3.9 mm
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