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參數(shù)資料
| 型號(hào)： | IMP2524 |
| 廠商： | IMP INC. |
| 英文描述： | Quad USB High-Side Power Switch with Fault Detection |
| 中文描述： | 四的USB高端功率開(kāi)關(guān)故障檢測(cè) |
| 文件頁(yè)數(shù)： | 1/4頁(yè) |
| 文件大?。?/td> | 117K |
| 代理商： | IMP2524 |
1999 IMP, Inc.
408-432-9100/www.impweb.com
1
Key Features
Applications
N
USB host and self-powered hubs
N
USB video monitors
N
USB printers
N
USB Rev. 1.1 and 2.0 Compliant
N
Four independent switches
N
2.7V to 5.5V input operation
N
Low MOSFET ON resistance
– IMP2524: 0.1
, 0.14
maximum
– IMP2527: 0.2
, 0.3
maximum
N
500mA continuos load current per switch
N
Low supply current
– 110μA ON-state current, 0.75μA OFF-state
current
N
1.25A maximum current limit, 750mA typical
N
Thermal shutdown 2.4V undervoltage lockout
(UVLO)
N
Open-drain flag output
– Undervoltage
– Current limit
– Thermal shutdown
N
Output can be force higher than input
N
Active HIGH(-1) and active LOW(-2) enable
N
16-pin SO and DIP packages, Die available
N
Pin compatible with the Micrel MIC2524 and
MIC2527
Typical Application
IMP252
4/2
7
7
A
DVANCE
P
RODUCT
I
NFORMATION
P
OWER
M
ANAGEMENT
Quad USB High-Side P
o
o
w
w
er
er
Switc
h wit
h F
ault Det
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 140m
maximum and the IMP2527 channel
resistance is 300
maximum. Both device operate with voltage inputs
from 2.7V to 5.5V
ection
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 0.75
μ
Awhen disabled and
just 110
μ
A 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 0.07
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+
OVERCURRENT
D+
D–
ON/OFF
LDO
GND
OUT
IN
GND
27k
1
m
F
0.01
m
F
0.1
m
F
10k
2524/27_01.eps
33
m
F*
GND
D–
D+
Downstream
USB
Port 1
500mA max.
V
BUS
+
IMP2527
5.1V
±
3%
5V
±
1%
or
IMP2524
5V
±
3%
0.01
m
F
33
m
F*
GND
D–
D+
Downstream
USB
Port 2
500mA max.
V
BUS
+
4.7
m
F
+
0.01
m
F
33
m
F*
GND
D–
D+
Downstream
USB
Port 3
500mA max.
V
BUS
+
0.01
m
F
33
m
F*
GND
D–
D+
Downstream
USB
Port 4
500mA max.
V
BUS
+
Bold/
Blue
lines indicate 0.1" wide, 1-oz. copper high-current traces.
*33
m
F, 16V tantalum or 100
m
F, 10V electrolytic per port
相關(guān)PDF資料 |
PDF描述 |
|---|---|
| IMP2527 | RESISTOR, 100 OHM, SMD |
| IMP2525A | Low-Resistance USB High-Side Power Switch(USB高邊電源開(kāi)關(guān)) |
| IMP2525 | USB High-Side Power Switch(USB高邊電源開(kāi)關(guān)) |
| IMP2526 | Dual USB High-Side Power Switch(雙USB高邊電源開(kāi)關(guān)) |
| IMP37-25JCM | Low Dropout Positiv Voltage Regulators |
相關(guān)代理商/技術(shù)參數(shù) |
參數(shù)描述 |
|---|---|
| IMP2524-1BN | 制造商:A1PROS 制造商全稱:A1 PROs co., Ltd. 功能描述:Quad USB Hiigh--Siide Power Swiittch wiitth Faulltt Dettecttiion |
| IMP2524-1BWM | 制造商:A1PROS 制造商全稱:A1 PROs co., Ltd. 功能描述:Quad USB Hiigh--Siide Power Swiittch wiitth Faulltt Dettecttiion |
| IMP2524-2BN | 制造商:A1PROS 制造商全稱:A1 PROs co., Ltd. 功能描述:Quad USB Hiigh--Siide Power Swiittch wiitth Faulltt Dettecttiion |
| IMP2524-2BWM | 制造商:A1PROS 制造商全稱:A1 PROs co., Ltd. 功能描述:Quad USB Hiigh--Siide Power Swiittch wiitth Faulltt Dettecttiion |
| IMP2525-1BM | 制造商:A1PROS 制造商全稱:A1 PROs co., Ltd. 功能描述:Quad USB Hiigh--Siide Power Swiittch wiitth Faulltt Dettecttiion |
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