ILC7526-IK Impala Linear Corporation, ILC7526-IK Datasheet

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ILC7526-IK

Manufacturer Part Number
ILC7526-IK
Description
USB DUAL CONTROL SWITCHES
Manufacturer
Impala Linear Corporation
Datasheet
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
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.
ILC7526/7536 1.5
General Description
ILC7526/7536
USB Dual Control Switches
Impala Linear Corporation
4.5V to 5.25V
Upstream VBUS
100mA max
D-
D+
GND
Impala Linear Corporation
V
BUS
Data
DSON
1µF
value of 140m
ILC7082-3.3
IN
GND
OUT
Final
ILC7526-IK
ILC7526-IN
ILC7536-IK
ILC7536-IN
Ordering Information* (T
1µF
3.3V USB Controller
per switch, the
V
(408) 574-3939
OVERCURRENT
OVERCURRENT
IN
100k
100k
ON/OFF
ON/OFF
Active High Enable, SO-8 package
Active High, DIP-8 package
Active Low, SO-8 package
Active Low, DIP-8 package
• 2 independent switches with ENABLE and FLAG
• 500mA continuous load current per switch (channel)
• 140m
• 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
• USB host and self powered hubs
• USB bus-powered hubs
• USB monitors, printers, cameras and other USB
• Hot plug-in power supplies
• Battery charger circuits
Applications
www.impalalinear.com
Features
A
controlled peripherals
= -40°C to =85°C)
ENA
ENB
FLGA
FLGB
maximum R
ILC7526
100k
100k
OUTA
OUTB
GND
IN
DSON
0.1µF
V
CC
(switch on-resistance)
5.0V
47µF
47µF
to USB Controller
+
+
(Two Pair)
Data
Dec 2000
V
V
GND
GND
BUS
BUS
D+
D-
D+
D-
1

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ILC7526-IK Summary of contents

Page 1

... USB bus-powered hubs • USB monitors, printers, cameras and other USB controlled peripherals • Hot plug-in power supplies • Battery charger circuits Ordering Information ILC7526-IK Active High Enable, SO-8 package ILC7526-IN Active High, DIP-8 package ILC7536-IK Active Low, SO-8 package ILC7536-IN ...

Page 2

... FLGA 3 FLGB 4 ENB OUTB 5 GND OUTA Impala Linear Corporation ILC7526/7536 1.5 8 OUTA GND 5 OUTB Pin Description Enable A (input): Logic-compatible enable input. (7526 active-high, 7536 active-low). Do not float. Fault Flag A (Output): Active-low, open-drain output. Indicates overcurrent, UVLO, or thermal shutdown. Fault Flag B (Output): Active-low, open-drain output. Indicates overcurrent, UVLO, or thermal shutdown ...

Page 3

... Operating Ambient Temperature Package Thermal Resistance SOIC 8-Pin DIP Lead Temperature (soldering 5 sec) Electrical Characteristics ILC7526IK Test circuit shown in Fig. 2. BOLDFACE type indicates limits that apply over the full operating temperature range (Note 2). Parameter Supply Current ENABLE Input Threshold ENABLE Input Current ...

Page 4

... Measurements Functionality at or above are taken at constant junction temperature as close to ambient as possible using low duty pulse testing. Note 3. Off is < 0.8V and On is > 2.4V for the ILC7526. Off is > 2.4V for the ILC7536. The enable input has approximately 200mV of hysteresis. 0.1µF ILC7526 ...

Page 5

... EN should not be allowed to go neg- ative with respect to GND. Soft-Start Once this current-limit The ILC7526 presents a high impedance when off, and slowly becomes a low impedance as it turns on. This reduces in rush current and related voltage drop that results from charging a capacitive load, satisfying the USB voltage drop requirements for bus-powered applications ...

Page 6

... Impala Linear Corporation. Impala Linear Corporation assumes no responsibility for the use of any circuitry other than circuitry embodied in an Impala Linear Corporation product. No other circuits, patents, licenses are implied. Impala Linear Corporation ILC7526/7536 1.5 0.155 0.244 0.150 ...

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