|
ILC7536 Datasheet, PDF (1/1 Pages) Impala Linear Corporation – USB DUAL POWER CONTROL SWITCHES | |||
|
PRODUCT NEWS BULLETIN
Applications
USB Host and self-powered Hubs
USB bus-powered Hubs
Hot plug-in power supplies
Battery Charger circuits
Power Saving Features
<1µA typical off-state supply current
50µA typical on-state supply current
System Advantages
Ultra low RDSON of 140m⦠per switch
500mA continuous load current per
channel
2 independent switches with Enables
and Flags
2.4V typical undervoltage lockout
1.25A maximum short circuit limit
Soft-start with 1mS turn-on
Over current / over temperature
protection - No external components
USB Specifications complaint
System Options
ILC7526 has active High Enable
ILC7536 has active Low Enable
Package Options
8-Pin SOIC
ILC7526/36
USB Dual Power Control Switches
+3.3V
VCC
USB
Controller
Overcurrent Flags and
seperate enable pins
10K
100K
10K
100K
ON/OFF A
Over Current A
Over Current B
ON/OFF B
ENA OUTA
FLGA IN
FLGB GND
ENB OUTB
DA-
ILC7526/36
DA+
4
DB-
DB+
Extremely low supply current -
50µA on-state, <1µA off-state
+5V
VCC
Output current to
500mA with 750mA
fault current limiting
47uF
0.1F
47uF
+5V
D-
D+
GND
+5V
D-
D+
GND
USB
Port A
USB
Port B
Short-Circuit and Thermal
shutdown protection
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 configured to meet requirements for either
self powered or bus powered USB (Universal Serial Bus) applica-
tions. The ILC7526 has active high ENABLE inputs, while the
ILC7536 ENABLE inputs are active low. With maximum RDSON
value of 140m⦠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 condi-
tions are also reported to the USB controller via one of the inde-
pendent flag pins. Internal circuitry provides a soft-start that elim-
inates momentary upstream voltage drops when the switch is
enabled, especially in bus powered applications. Additional fea-
tures include undervoltage lockout (2.4V), fast turn-off, 2.8V to
5.8V input voltage range, thermal shutdown to prevent switch fail-
ure from high current loads, and 3.3V and 5V logic compatible
enable inputs.
www.impalalinear.com
5225 Hellyer Ave., Suite 200
San Jose, CA 95138
(408) 574-3939
IMPALA LINEAR CORPORATION
|