ILC7526 Datasheet, PDF (1/6 Pages) Impala Linear Corporation – USB DUAL CONTROL SWITCHES

Impala Linear Corporation
ILC7526/7536 Final
USB Dual Control Switches
General Description
The ILC7526 contains dual high side power control
switches, with independent enable and flag functions,
integrated into a single 8-pin SOIC package. With just a
few external components, the ILC7526 can be easily con-
figured to meet requirements for either self powered or
bus powered USB (Universal Serial Bus) applications.
The ILC7526 has active high ENABLE inputs, while the
ILC7536 ENABLE inputs are active low.
With a maximum R_DSON value of 140mΩ per switch, the
USB voltage drop requirements can be achieved. Each
switch can also supply up to 500mA, with internal circuitry
limiting the fault current to 750mA. Fault conditions are also
reported to the USB controller via one of the independent
flag pins. Internal circuitry provides a soft-start that elimi-
nates momentary upstream voltage drops when the switch
is enabled, especially in bus powered applications.
Additional features include undervoltage lockout (2.4V),
fast turn-off, 2.8V to 5.8V input voltage range, thermal
shutdown to prevent switch failure from high current loads,
and 3.3V and 5V logic compatible enable inputs.
The ILC7526 and ILC7536 are available in both 8-pin SOIC
and 8-pin mini-DIP packages.
Features
• 2 independent switches with ENABLE and FLAG
• 500mA continuous load current per switch (channel)
• 140mΩ maximum R_DSON (switch on-resistance)
• 1.25A maximum short circuit current limit
• Thermal shutdown
• 110µA typical on-state supply current
• 0.75µA typical off-state supply current
• 2.4V typical undervoltage lockout
• 2.8V to 5.8V input voltage range
• 1 ms turn-on (soft-start)
• Fast turn-off
• Outputs can be forced higher than inputs (off-state)
• USB specification compliant
• Active-high or active-low ENABLE versions
• 8-pin SOIC or 8-pin mini-DIP packages
Applications
• USB host and self powered hubs
• USB bus-powered hubs
• USB monitors, printers, cameras and other USB
controlled peripherals
• Hot plug-in power supplies
• Battery charger circuits
Ordering Information* (T_A = -40°C to =85°C)
ILC7526-IK
Active High Enable, SO-8 package
ILC7526-IN
Active High, DIP-8 package
ILC7536-IK
Active Low, SO-8 package
ILC7536-IN
Active Low, DIP-8 package
4.5V to 5.25V
Upstream VBUS
100mA max
V_BUS
D+
D-
GND
ILC7082-3.3
IN OUT
1µF _GND
100k
100k
3.3V USB Controller
V_IN
ON/OFF
1µF _OVERCURRENT
OVERCURRENT
ON/OFF
100k
100k
ILC7526
ENA
FLGA
FLGB
OUTA
IN
GND
ENB ^OUTB
V_CC 5.0V
+
47µF
0.1µF
+
47µF
V_BUS
D+
D-
GND
V_BUS
D+
D-
GND
Data
Impala Linear Corporation
ILC7526/7536 1.5
[phone] www.impalalinear.com
Data
(Two Pair)
to USB Controller
Dec 2000 1