LM3525MX-H National Semiconductor, LM3525MX-H Datasheet

no-image

LM3525MX-H

Manufacturer Part Number
LM3525MX-H
Description
IC,Power Control/Management,CMOS,SOP,8PIN,PLASTIC
Manufacturer
National Semiconductor
Datasheet

Specifications of LM3525MX-H

Lead Free Status / RoHS Status
Contains lead / RoHS non-compliant

Available stocks

Company
Part Number
Manufacturer
Quantity
Price
Part Number:
LM3525MX-H
Manufacturer:
NS/国半
Quantity:
20 000
Part Number:
LM3525MX-H/NOPB
Manufacturer:
NS
Quantity:
30 000
Part Number:
LM3525MX-H/NOPB
Manufacturer:
N/S
Quantity:
1 901
Part Number:
LM3525MX-H/NOPB
Manufacturer:
NS/国半
Quantity:
20 000
© 2000 National Semiconductor Corporation
LM3525
Single Port USB Power Switch and Over-Current
Protection
General Description
The LM3525 provides Universal Serial Bus standard power
switch and over-current protection for all host port applica-
tions. The single port device is ideal for Notebook PC and
Handheld PC applications that supply power to one port.
A 1 ms delay on fault flag output prevents erroneous over-
current reporting caused by inrush currents during the
hot-plug events.
The LM3525 accepts an input voltage between 2.7V and
5.5V allowing use as a device-based inrush current limiter
for 3.3V USB peripherals, as well as Root and Self-Powered
Hubs at 5.5V. The Enable input accepts both 3.3V and 5.0V
logic thresholds.
The small size, low R
LM3525 a good choice for root hubs as well as ganged
power control in space-critical self-powered hubs.
Typical Operating Circuit and Connection Diagram
ON
, and 1 ms fault flag delay make the
DS101055-31
DS101055
DS101055-1
Features
n 1 ms Fault Flag Delay During Hot-Plug Events
n Smooth Turn-On Eliminates Inrush Induced Voltage
n UL Recognized Component: REF # 205202
n 1A Nominal Short Circuit Output Current Protects
n Thermal Shutdown Protects Device in Direct Short
n 500mA Minimum Continuous Load Current
n Small SO-8 Package Minimizes Board Space
n 2.7V to 5.5V Input Voltage Range
n Switch Resistance
n 1µA Max Standby Current
n 100 µA Max Operating Current
n Undervoltage Lockout (UVLO)
Applications
n Universal Serial Bus (USB) Root Hubs including
n USB Monitor Hubs
n Other Self-Powered USB Hub Devices
n High Power USB Devices Requiring Inrush Limiting
n General Purpose High Side Switch Applications
Drop
Notebook PC Power Supplies
Condition
Desktop and Notebook PC
LM3525M-H
LM3525M-L
120 m
DS101055-30
DS101055-2
Max. at V
IN
= 5V
January 2000
www.national.com

Related parts for LM3525MX-H

LM3525MX-H Summary of contents

Page 1

... ON LM3525 a good choice for root hubs as well as ganged power control in space-critical self-powered hubs. Typical Operating Circuit and Connection Diagram DS101055-31 © 2000 National Semiconductor Corporation Features Fault Flag Delay During Hot-Plug Events n Smooth Turn-On Eliminates Inrush Induced Voltage Drop n UL Recognized Component: REF # 205202 ...

Page 2

... Ordering Information Part Number LM3525M-H LM3525M-L LM3525MX-H LM3525MX-L www.national.com Enable, Delivery Option Active High Enable, 95 units per rail Active Low Enable, 95 units per rail Active High Enable, 2500 units per reel Active Low Enable, 2500 units per reel 2 Package Type SO-8, ...

Page 3

... Absolute Maximum Ratings If Military/Aerospace specified devices are required, please contact the National Semiconductor Sales Office/ Distributors for availability and specifications. Supply Voltage Output Voltage Voltage at All Other Pins Power Dissipation (T = 25˚C) A (Note 2) T (Note 2) JMAX DC Electrical Characteristics Limits in standard typeface are for ...

Page 4

AC Electrical Characteristics Limits in standard typeface are for 5.0V. less otherwise specified Symbol Parameter t OUT Rise Time r t OUT Fall Time f t Turn on Delay OUT ON t Turn ...

Page 5

Typical Performance Characteristics RDS Current Limit vs Temperature Delay vs Temperature = 5.0V 500 mA RDS vs Temperature ON DS101055-4 Over Current Threshold vs Temperature DS101055-6 UVLO Threshold DS101055-8 5 ...

Page 6

Typical Performance Characteristics specified. (Continued) Short Circuit Response Turn-ON/OFF Delay and Rise Time/Fall Time www.national.com = 5.0V 500 mA Under Voltage Lock Out (UVLO) DS101055-10 Short Circuit Current DS101055- 25˚C unless otherwise ...

Page 7

Functional Description The LM3525-H and LM3525-L are high side P-Channel switches with active-high and active-low enable inputs, re- spectively. Fault conditions turn off and inhibit turn-on of the output transistor and activate the open-drain error flag tran- sistor sinking current ...

Page 8

Application Information • Avoid vias as much as possible. If vias are used, use mul- tiple vias in parallel and/or make them as large as pos- sible. • Place the output capacitor and ferrite beads as close to the USB ...

Page 9

Typical Applications FIGURE 3. SIngle-Port USB Self-Powered Hub FIGURE 4. Soft-Start Application FIGURE 5. Inrush Current-limit Application 9 DS101055-25 DS101055-26 DS101055-27 www.national.com ...

Page 10

... NATIONAL’S PRODUCTS ARE NOT AUTHORIZED FOR USE AS CRITICAL COMPONENTS IN LIFE SUPPORT DEVICES OR SYSTEMS WITHOUT THE EXPRESS WRITTEN APPROVAL OF THE PRESIDENT AND GENERAL COUNSEL OF NATIONAL SEMICONDUCTOR CORPORATION. As used herein: 1. Life support devices or systems are devices or systems which, (a) are intended for surgical implant ...

Related keywords