MAX1564ETE+ Maxim Integrated Products, MAX1564ETE+ Datasheet - Page 7

• Manufacturer Part Number: MAX1564ETE+
• Description: IC TRIPLE USB SW 1.2A 16-TQFN
• Manufacturer: Maxim Integrated Products

Specifications of MAX1564ETE+

• Applications: USB
• Interface: USB
• Voltage - Supply: 2.7 V ~ 5.5 V
• Package / Case: 16-TQFN Exposed Pad
• Mounting Type: Surface Mount
• Lead Free Status / RoHS Status: Lead free / RoHS Compliant

The MAX1564 includes undervoltage-lockout (UVLO)
circuitry to prevent erroneous switch operation when
the input voltage is low during startup and brownout
conditions. The IC is disabled when the input voltage is
Undervoltage Lockout (UVLO) and Input
PIN
10
11
12
13
14
15
16
—
1
2
3
4
5
6
7
8
9
NAME
OUTC
OUTB
OUTA
FLTB
FLTC
FLTA
GND
ONC
SETI
ONB
ONA
V
INA
INB
INC
SEL
EP
_______________________________________________________________________________________
CC
Detailed Description
Triple 1.2A USB Switch in 4mm x 4mm
Input Power Supply for OUTA. Provides power to OUTA. INA, INB, INC, and V
together externally. Bypass with a 0.1µF capacitor to GND. Additional capacitors can be used as
required.
Input Power Supply for the MAX1564. Provides power to the IC. INA, INB, INC, and V
connected together externally.
Input Power Supply for OUTB. Provides power to OUTB. INA, INB, INC, and V
together externally.
Input Power Supply for OUTC. Provides power to OUTC. INA, INB, INC, and V
together externally.
Polarity Control Input. Selects the polarity of ONA, ONB, and ONC. Connect to V
ON_ inputs. Connect to GND for active-low ON_ inputs.
Current-Limit Program Input. Connect a resistor from SETI to GND in the 26kΩ to 60kΩ range. I
1.37A x 26.1kΩ / R
Fault-Indicator Output for Switch B. FLTB is an open-drain output that goes low when INB is below the
UVLO threshold, or when switch B is in current limit for greater than 20ms, or when switch B is in
thermal shutdown.
Fault Indicator Output for Switch C. FLTC is an open-drain output that goes low when INC is below the
UVLO threshold, or when switch C is in current limit for greater than 20ms, or when switch C is in
thermal shutdown.
Power Output for Switch C. OUTC is high impedance during shutdown.
Power Output for Switch B. OUTB is high impedance during shutdown.
Ground. Connect ground to the exposed pad directly under the IC.
Power Output for Switch A. OUTA is high impedance during shutdown.
Fault Indicator Output for Switch A. FLTA is an open-drain output that goes low when INA is below the
UVLO threshold, or when switch A is in current limit for greater than 20ms, or when switch A is in
thermal shutdown.
Control Input for Switch C. ONC is active high when SEL is connected to V
SEL is connected to GND.
Control Input for Switch B. ONB is active high when SEL is connected to V
SEL is connected to GND.
Control Input for Switch A. ONA is active high when SEL is connected to V
SEL is connected to GND.
Exposed Pad. Connect exposed pad to a large ground plane to improve thermal power dissipation.
Voltage Requirements
SETI
.
less than 2.5V (typ). FLT_ asserts low during a UVLO
condition.
The MAX1564 uses two methods to protect the circuit
from overcurrent conditions. During an overcurrent
event, the IC senses the switch output voltage and
selects either continuous current limiting or short-circuit
FUNCTION
Current-Limit Fault Protection
CC
CC
CC
Pin Description
Thin QFN
and active low when
and active low when
CC
CC
and active low when
CC
CC
must be connected
must be connected
must be connected
for active-high
CC
must be
LIM
=
7