MAX1562ESA-C4H Maxim Integrated, MAX1562ESA-C4H Datasheet

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MAX1562ESA-C4H

Manufacturer Part Number
MAX1562ESA-C4H
Description
Power Switch ICs - USB
Manufacturer
Maxim Integrated
Datasheet
1.MAX1562ESA-C4H.pdf (14 pages)

Specifications of MAX1562ESA-C4H

Supply Voltage - Min
4 V
Supply Voltage - Max
5.5 V
Number Of Switches
Single
The MAX1562/MAX1562H/MAX1563 single current-
limited switches provide up to 4A to power up to eight
USB ports. They operate from a 4V to 5.5V input
supply and consume only 40µA of quiescent current
when operating and only 3µA in shutdown.
The MAX1562/MAX1562H/MAX1563s’ autoreset feature
latches the switch off if the output is shorted, thereby
saving system power. When the short is removed, the
switch is reactivated. A fault-blanking feature enables the
circuit to ignore momentary faults, such as those caused
when hot swapping a capacitive load, preventing false
alarms to the host system. Fault blanking also prevents
fault signals from being issued when the device powers
up the load.
The MAX1562/MAX1562H/MAX1563 provide several
safety features to protect the USB port. Built-in thermal-
overload protection turns off the switch when the die
temperature exceeds +160°C. Accurate internal cur-
rent-limiting circuitry protects the input supply against
both overload and short-circuit conditions. An open-
drain fault signal (FAULT) notifies the microprocessor
when a thermal-overload, current-limit, undervoltage
lockout (UVLO), or short-circuit fault occurs.
The MAX1562 has an active-low ON, and the
MAX1562H has an active-high ON enable input. The
MAX1563 has a selectable active-high or active-low
logic-controlled enable. The current limit is pro-
grammed from 1A to 4A using a resistor.
The MAX1562/MAX1562H are available in 8-pin SO
packages and are pin-compatible upgrades to the
MIC2545A/MIC2549A. The MAX1563 provides the
same features and higher current performance in a
smaller 12-pin (4mm x 4mm) Thin QFN package. These
devices operate over an extended temperature range
(-40°C to +85°C). An evaluation kit is available to speed
designs.
19-2631; Rev 2; 2/10
Pin Configurations appear at end of data sheet.
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.
Notebook Computers
Desktop Computers
USB Ports and Hubs
PDAs and Palmtop Computers
Docking Stations
Switches with Autoreset and Fault Blanking
________________________________________________________________ Maxim Integrated Products
General Description
Programmable 4A USB Current-Limited
Applications
o Programmable Current Limit (1A to 4A) with
o Autoreset Feature Saves System Power
o 20ms Fault-Blanking Circuitry
o Active-High/Low Control Logic
o Fault-Indicator Output
o Thermal-Overload Protection
o Smaller 4mm x 4mm Thin QFN Package (MAX1563)
o 3µA Shutdown Current
+ Denotes a lead(Pb)-free/RoHS-compliant package.
* EP = Exposed pad.
MAX1562ESA+
MAX1562HESA+
MAX1563ETC+
ACTIVE-HIGH/ACTIVE-LOW
Resistor
PART
4V TO 5.5V
SELECTABLE
INPUT
Typical Operating Circuit
-40°C to +85°C
-40°C to +85°C
-40°C to +85°C
TEMP RANGE
Ordering Information
IN
IN
ON
SEL
ISET
MAX1563
ONLY
MAX1562H
MAX1562
MAX1563
GND
FAULT
OUT
OUT
PIN-PACKAGE
8 SO
8 SO
12 TQFN-EP*
Features
USB
PORT
1

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MAX1562ESA-C4H Summary of contents

Page 1

... Active-High/Low Control Logic o Fault-Indicator Output o Thermal-Overload Protection o Smaller 4mm x 4mm Thin QFN Package (MAX1563) o 3µA Shutdown Current Ordering Information PART TEMP RANGE MAX1562ESA+ -40°C to +85°C MAX1562HESA+ -40°C to +85°C MAX1563ETC+ -40°C to +85°C + Denotes a lead(Pb)-free/RoHS-compliant package Exposed pad. ...

Page 2

Programmable 4A USB Current-Limited Switches with Autoreset and Fault Blanking ABSOLUTE MAXIMUM RATINGS IN, ON, ON, ISET, SEL, OUT to GND .......................-0.3V to +6V FAULT to GND .............................................-0. OUT..................................................................-0.3V to +6V OUT Maximum Continuous Switch Current ...

Page 3

Programmable 4A USB Current-Limited Switches with Autoreset and Fault Blanking ELECTRICAL CHARACTERISTICS (continued +5V 1µ 4.7µ OUT PARAMETER SYM Output Fall Time t FALL Thermal-Shutdown Threshold ON, ON, ...

Page 4

Programmable 4A USB Current-Limited Switches with Autoreset and Fault Blanking ELECTRICAL CHARACTERISTICS (continued +5V 1µ 4.7µ OUT PARAMETER SYM Turn-On Delay t Turn-Off Delay t OFF ON, ON, ...

Page 5

Programmable 4A USB Current-Limited Switches with Autoreset and Fault Blanking (V = +5V 1µ 4.7µ OUT NORMALIZED R vs. TEMPERATURE ON 1.3 1.2 1.1 1.0 0.9 0.8 0.7 -40 - ...

Page 6

Programmable 4A USB Current-Limited Switches with Autoreset and Fault Blanking (V = +5V 1µ 4.7µ OUT SWITCH TURN-ON TIME V ON (MAX1562 (MAX1562H) V OUT 1ms/div STARTUP TIME Ω ...

Page 7

Programmable 4A USB Current-Limited Switches with Autoreset and Fault Blanking PIN MAX1562 NAME MAX1563 MAX1562H (TQFN-EP (ON) FAULT GND 4 7 ISET OUT ...

Page 8

Programmable 4A USB Current-Limited Switches with Autoreset and Fault Blanking following equation 17120 / R LIM ISET Choose R with resistor values between 4.22kΩ to ISET 16kΩ. Resistor values greater than 16kΩ significantly degrade current-limit accuracy. For the ...

Page 9

Programmable 4A USB Current-Limited Switches with Autoreset and Fault Blanking Table 2. Current Limiting and Fault Behavior CONDITION • short is detected at the output, the channel turns off, and the blanking timer begins. FAULT remains high during ...

Page 10

Programmable 4A USB Current-Limited Switches with Autoreset and Fault Blanking ramps down for 800µs. Under fault conditions, the output of the switches turns off rapidly to provide maximum safe- ty for the upstream power source and downstream devices. Internal blocks ...

Page 11

Programmable 4A USB Current-Limited Switches with Autoreset and Fault Blanking Chip Information TRANSISTOR COUNT: 1833 PROCESS: BiCMOS For the latest package outline information and land patterns www.maxim-ic.com/packages. Note that a “+”, “#”, or “-” in the package code ...

Page 12

Programmable 4A USB Current-Limited Switches with Autoreset and Fault Blanking For the latest package outline information and land patterns www.maxim-ic.com/packages. Note that a “+”, “#”, or “-” in the package code indicates RoHS status only. Package drawings may ...

Page 13

Programmable 4A USB Current-Limited Switches with Autoreset and Fault Blanking For the latest package outline information and land patterns www.maxim-ic.com/packages. Note that a “+”, “#”, or “-” in the package code indicates RoHS status only. Package drawings may ...

Page 14

... Maxim cannot assume responsibility for use of any circuitry other than circuitry entirely embodied in a Maxim product. No circuit patent licenses are implied. Maxim reserves the right to change the circuitry and specifications without notice at any time. 14 ____________________Maxim Integrated Products, 120 San Gabriel Drive, Sunnyvale, CA 94086 408-737-7600 © 2010 Maxim Integrated Products ...

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