MAX1564_10 Datasheet, PDF (1/11 Pages) Maxim Integrated Products – Triple 1.2A USB Switch in 4mm x 4mm Thin QFN

19-3463; Rev 1; 2/10
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Triple 1.2A USB Switch in 4mm x 4mm
Thin QFN
General Description
The MAX1564 triple, current-limited USB switch comes
in a space-saving, 16-pin, 4mm x 4mm thin QFN pack-
age. Each channel meets all IEC specifications for USB
ports. The device is capable of supplying up to 1.2A
from each output. The MAX1564 has multiple protection
features, including thermal shutdown to limit junction
temperature in case of a prolonged short or overload
condition. Reverse-current protection circuitry blocks
current flow from output to input regardless of the
switch state. The IC has accurate, user-programmable
current-limiting circuitry to protect the input supply
against overload.
Each output of the MAX1564 has short-circuit protec-
tion that latches off the switch when the output is short-
ed for more than 20ms, thereby saving system power.
Auto-restart then tests the shorted output with a 25mA
current to determine when the short is removed, then
automatically restarts the output. Independent open-
drain fault signals notify the microprocessor that the
internal current limit has been reached. A 20ms fault-
blanking feature allows momentary faults to be ignored,
such as those caused when hot-swapping into a
capacitive load. This feature helps avoid issuing false
alarms to the host system. Blanking also suppresses
errant fault signals when the device is powering up.
Applications
USB Ports
USB Hubs
Notebook Computers
Desktop Computers
Docking Stations
Features
o Tiny 16-Pin 4mm x 4mm Thin QFN Package
o Reverse-Current Blocking
o Programmable Current Limit
o Auto-Restart when Fault Is Removed
o 12% Accurate Current Limit
o Up to 1.2A Load Current for Each Output
o Thermal-Overload Protection
o Built-In 20ms Fault Blanking
o Compliant with All USB Specifications
o 2.7V to 5.5V Input Supply Range
o Independent Fault Indicator Outputs
o Active-High/Active-Low Select Pin
o ±15kV ESD Protection (with Caps)
Ordering Information
PART
TEMP RANGE
MAX1564ETE
-40°C to +85°C
*EP = Exposed pad.
PIN-PACKAGE
16 Thin QFN-EP*
4mm x 4mm
TOP VIEW
Pin Configuration
12 11 10
9
FLTA ¹³
ONC 14
ONB ¹⁵
ONA ¹⁶
MAX1564
1
2
3
4
8 FLTC
7 _FLTB
6 ^SETI
5 SEL
THIN QFN
4mm X 4mm
________________________________________________________________ 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..