Datasheet IMP2527-2BWM, IMP2527-2BN, IMP2527-1BN, IMP2524-2BWM, IMP2524-2BN Datasheet (IMP)

©

1999 IMP, Inc. 408-432-9100/www.impweb.com 1

Key Features

Applications

◆ USB host and self-powered hubs

◆ USB video monitors

◆ USB printers

◆

USB Rev. 1.1 and 2.0 Compliant

◆

Four independent switches

◆

2.7V to 5.5V input operation

◆

Low MOSFET ON resistance
– IMP2524: 0.1Ω, 0.14Ω maximum
– IMP2527: 0.2Ω, 0.3Ω maximum

◆

500mA continuos load current per switch

◆

Low supply current
– 110µA ON-state current, 0.75µA OFF-state

current

◆

1.25A maximum current limit, 750mA typical

◆

Thermal shutdown 2.4V undervoltage lockout
(UVLO)

◆

Open-drain flag output
– Undervoltage
– Current limit
– Thermal shutdown

◆

Output can be force higher than input

◆

Active HIGH(-1) and active LOW(-2) enable

◆

16-pin SO and DIP packages, Die available

◆

Pin compatible with the Micrel MIC2524 and
MIC2527

Typical Application

IMP252

IMP252

4/2

4/277

ADVANCE PRODUCT INFORMATIONPOWER MANAGEMENT

Quad USB High-Side P

Quad USB High-Side Poowwerer

Switc

Switc

h wit

h wit

h F

h F

ault Det

ault Det

ection

ection

The IMP2524 and IMP2527 are complete power management solutions
for bus-powered and self-powered USB hubs. Each device contains four
independent power switches and fault detection logic. The IMP2524
channel resistance is a low 140mΩ maximum and the IMP2527 channel
resistance is 300Ω maximum. Both device operate with voltage inputs
from 2.7V to 5.5V

The IMP2524/2527 conform to the new USB 1.1 standard. Fault current
is limited to 750mA typically, and a flag output for each switch conveys
fault information to the local USB controller. The IMP252x “Soft-Start”
function ramps the ON-current to eliminate any excessive voltage drop
on the input side that could occur when capacitive loads are charged.

Self-monitoring features include thermal shutdown to prevent
catastrophic switch failure from high-current loads and undervoltage
lockout (UVLO) that insures that the device remains OFF unless there is
sufficient supply voltage present.

The switch Enable input logic can interface with both 3.3V and 5V logic.
Both active-HIGH (-1 devices) and active-LOW (-2 devices) enable logic
versions are available. Supply current is a low 0.75µAwhen disabled and
just 110µA when enabled

The quad IMP2524/7 devices are available in 16-pin DIP and 16-pin
SO packages and are pin compatible replacements for the Micrel
MIC2524-1/-2 and MIC2527-1/2 devices. IMP offers a complete family
of USB power management products. For single-switch applications see
the IMP2525 and IMP2525A data sheets. The single-switch IMP2525A
features a 0.07Ω switch resistance. For dual-switch applications, refer to
the IMP2526 data sheet.

Data

Ferrite Bead

2

1

3

4

5

6

7

8

INA/B

INC/D

OUTA

OUTB

OUTC

OUTD

GND

GND

16

15

14

13

12

11

10

9

ENA

FLGA

ENB

FLGB

ENC

FLGC

END

FLGD

IMP2524
IMP2527

USB Controller

V

+

D+

D–

ON/OFF

OVERCURRENT

LDO

OUTIN

GND

GND

27k

1mF

0.01mF

0.1mF

10k

2524/27_01.eps

33mF*

GND

D–

D+

Downstream
USB
Port 1
500mA max.

V

BUS

+

IMP2527

5.1V ± 3%
5V ± 1%

or

IMP2524

5V ± 3%

0.01mF

33mF*

GND

D–

D+

Downstream
USB
Port 2
500mA max.

V

BUS

+

4.7mF

+

0.01mF

33mF*

GND

D–

D+

Downstream
USB
Port 3
500mA max.

V

BUS

+

0.01mF

33mF*

GND

D–

D+

Downstream
USB
Port 4
500mA max.

V

BUS

+

Bold/Blue lines indicate 0.1" wide, 1-oz. copper high-current traces.

*33mF, 16V tantalum or 100mF, 10V electrolytic per port

2

408-432-9100/www.impweb.com

©

1999 IMP, Inc.

Pin Descriptions

Ordering Information

Pin Configuration

IMP252

IMP252

4/2

4/277

4GND

3OUTA

2ENA

1FLGA

13 INA/B

14 OUTB

15 ENB

16 FLGB

8FLGC

7ENC

6OUTC

5INC/D

9 FLGD

10 END

11 OUTD

12 GND

2524/27_02.eps

IMP2524/27

SO/DIP

2524/27_03.eps

OUTA

3

INA/B

GND

13

4

GND

12

FLGA

2

ENA

1

Logic,

Charge

Pump

OUTB

14

ENB

15

FLGB

16

Logic,

Charge

Pump

OUTC

6

INC/D

5

FLGC

8

ENC

7

Logic,

Charge

Pump

OUTD

11

END

10

FLGD

9

Logic,

Charge

Pump

IMP2524/27

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1AGLF

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5D/CNI

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7CNE

8CGLF

9DGLF

01DNE

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31B/ANI

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51BNE

61BGLF

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10t72/4252

rebmuNniPcigoLelbanEecnatsiseR”NO“lacipyTegnaRerutarepmeTegakcaP-sniP

MWB1-4252PMIHGIHevitcAm001 Ω C°58+otC°04– OS-61

MWB2-4252PMIWOLevitcAm001 Ω C°58+otC°04– OS-61
NB1-4252PMIHGIHevitcAm001 Ω C°58+otC°04– PID-61
NB2-4252PMIWOLevitcAm001 Ω C°58+otC°04– PID-61

MWB1-7252PMIHGIHevitcAm002 Ω C°58+otC°04– OS-61

MWB2-7252PMIWOLevitcAm002 Ω C°58+otC°04– OS-61
NB1-7252PMIHGIHevitcAm002 Ω C°58+otC°04– PID-61
NB2-7252PMIWOLevitcAm002 Ω C°58+otC°04– PID-61

20t72/4252

©

1999 IMP, Inc. 408-432-9100/www.impweb.com 3

IMP252

IMP252

4/2

4/277

Absolute Maximum Ratings

Electrical Characteristics

Supply Voltage . . . . . . . . . . . . . . . . . . . . . . . . . . +8.0V

Fault Flag Voltage . . . . . . . . . . . . . . . . . . . . . . +8.0V

Fault Flag Current . . . . . . . . . . . . . . . . . . . . . . 50mA

Output Voltage . . . . . . . . . . . . . . . . . . . . . . . . . +8.0V

Output Current . . . . . . . . . . . . . . . . . . . . . . . . . Internally Limited

Enable Input . . . . . . . . . . . . . . . . . . . . . . . . . . . –0.3V to 12V

Storage Temperature . . . . . . . . . . . . . . . . . . . . . –65°C to +150°C

Lead Temperature (Soldering, 5 sec.) . . . . . . . 260°C

Package Thermal Resistance

SO (θ

JA

) . . . . . . . . . . . . . . . . . . . . . . . . . . . . 160°C/W

DIP(θ

JA

) . . . . . . . . . . . . . . . . . . . . . . . . . . . . 130°C/W

Note: All voltages are referenced to GND.

These are stress ratings only and functional operation is not
implied. Exposure to absolute maximum ratings for prolonged
time periods may affect device reliability.

Parameter Symbol Conditions Min Typ Max Units

Supply Voltage Range V

IN

TA= – 40°C to +85°C 2.7 5.5 V

Operating Temperature Range T

A

–40 85 °C

Supply Current I

IN OFF

Switch OFF, No load 0.75 10 µA

Switch OFF V

ENOFF

≤ 0.8V, V

ENON

≥ 2.4V IMP2524/27-1

V

ENON

≤ 0.8V, V

ENOFF

≥ 2.4V IMP2524/27-2

Supply Current I

IN ON

Switch ON, No load 110 320 µA

Switch ON V

ENOFF

≤ 0.8V, V

ENON

≥ 2.4V IMP2524/27-1

V

ENON

≤ 0.8V, V

ENOFF

≥ 2.4V IMP2524/27-2

Enable Input Threshold V

ENH

LOW to HIGH (“0” to “1”) Enable Voltage, Note 1 2.1 2.4 V

V

ENL

HIGH to LOW (“1” to “0”) Enable Voltage, Note 1 0.8 1.9

Enable Input Current I

EN

VEN= 2.4V 0.01 1 µA

VEN= 0.8V 0.01 1

Enable Input Capacitance C

EN

1pF

Switch ON Resistance R

ON

IMP2524: I

OUT

= 500mA each switch 0.10 0.14 Ω

IMP2527: I

OUT

= 500mA each switch 0.20 0.30

Continuous Load Current I

L

Each output 0.5 A

Output Turn-On Delay T

DON

RL= 10Ω each output 0.25 ms

Output Turn-On Rise Time T

RON

RL= 10Ω each output 1 ms

Output Turn-Off Delay T

DOFF

RL= 10Ω each output 1 20 µs

Output Turn-Off Fall Time T

FOFF

RL= 10Ω each output 1 20 µs

Output Leakage Current I

OFF

10 µA

Short-circuit Current Limit I

SC

0.50 0.75 1.25 A

Overtemperature Shutdown TJincreasing 135 °C

Threshold TJdecreasing 125

Error Flag Output Resistance R

FLAG

VIN= 5V, IL= 10mA 10 Ω

VIN= 3.3V, IL= 10mA 15

Error Flag Output Current I

FLAG

V

FLAG

= 5V 0.01 1 µA

UVLO Threshold V

UVLO

VINIncreasing 2.5 V

VINDecreasing 2.3

Unless otherwise noted, VIN= 5V and TA= 25°C.

Notes 1. Switch OFF is VEN≤ 0.8V and Switch ON is VEN≥ 2.4V for the IMP2524/27-1. Switch OFF is VEN≥ 2.4V and Switch ON is

V

EN

≤ 0.8V for the IMP2524/27-2. The Enable input has approximately 200mV of hysteresis.

IMP252

IMP252

4/2

4/277

IMP, Inc.
Corporate Headquarters
2830 N. First Street
San Jose, CA 95134-2071
Tel: [phone]
Tel: [phone]
Fax: [phone]
e-mail: [e-mail]
http://www.impweb.com

The IMP logo is a registered trademark of IMP, Inc.

All other company and product names are trademarks of their respective owners.

© 1999 IMP, Inc.
Printed in USA
Publication #: 5005
Revision: B
Issue Date: 05/17/00
Type: Preliminary

Plastic DIP (16-Pin)

H

E

eB

D

A1

A

L

0°– 8°

C

16-Pin (SO).eps

SO (16-Pin)

Package Dimensions

D1

N

E1

E

A ——— 002.0 ——— 80.5

sehcnIsretemilliM

niMxaMniMxaM

*)niP-61(PIDcitsalP

1A510.0 ——— 83.0 ———
2A521.0571.081.354.4

D

A2

A

B610.0220.014.065.0

1B540.0560.041.156.1
C800.0210.002.003.0
D547.0567.029.8134.91

L

A1

e

B1

B

0°–15°

eA
eB

Plastic DIP (16-Pin).eps

C

1D500.0080.031.030.2
E003.0523.026.762.8

1E042.0013.001.678.7
e001.0 ——— 45.2 ———

Ae003.0 ——— 26.7 ———
Be ——— 004.0 ——— 61.01

L511.0051.029.218.3

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A629.03401.053.256.2

1A0400.08110.001.003.0
B310.0020.033.015.0
C1900.05210.032.023.0
D7793.03314.001.0105.01
E4192.02662.004.706.7
eCSB050.0CSB72.1
H493.0914.000.0156.01
L610.0050.004.072.1

BA850-OMgniwarDCEDEJ*

AA310-SMgniwarDCEDEJ**

3ta.30t_62/4252