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參數(shù)資料
| 型號： | IMP2525 |
| 廠商： | IMP INC. |
| 英文描述： | USB High-Side Power Switch(USB高邊電源開關(guān)) |
| 中文描述： | 的USB高側(cè)電源開關(guān)（的USB高邊電源開關(guān)） |
| 文件頁數(shù)： | 1/8頁 |
| 文件大?。?/td> | 179K |
| 代理商： | IMP2525 |
1999 IMP, Inc.
408-432-9100/www.impweb.com
1
Key Features
Applications
N
USB power management
N
USB hosts and self-powered hubs
N
Battery-charger circuits and power supplies
N
Meets or exceeds USB Rev. 1.1 specification
N
Low MOSFET R
ON
(0.14
at 3V)
N
2.7V to 5.5V input operation
N
Current limiting
N
Soft-start turn-on (1ms) prevents turn-on glitches
N
500mA continuous load current
N
MOSFET short-circuit current limit (1.25A max)
N
Low supply current
– 110μA ON state current, 1μA OFF state current
N
Active-LOW or Active-HIGH Enable input
N
3.3V or 5V logic compatibility
N
Fault Flag indicates three fault conditions:
– Undervoltage
– Current limit
– Thermal shutdown
N
Open-drain Fault Flag output
N
2.4V Undervoltage Lockout (UVLO)
N
Pin compatible with the Micrel MIC2525
Block Diagrams
IMP2525
P
OWER
M
ANAGEMENT
USB High-Side P
o
o
w
w
– Sing
le switc
h
h
– 0.
1
1
4
4
"ON" r
esis
t
t
– MIC2525 pin com
er Switc
h
h
ance at 3V
patible
The IMP2525 high-side power switch IC is designed for self-powered
and bus-powered Universal Serial Bus (USB) power supply and power
management applications. The IMP2525 conforms to USB standards
with a low output switch ON-resistance (R
ON
) and minimal voltage drop
across the switch. The fault current is limited to 750mA typically, and
a flag output conveys fault conditions to the local USB controller.
The IMP2525 provides a “Soft-Start” function that ramps up the ON-
current to eliminate any excessive voltage drop on the input side that
could occur due to charging a capacitive load in bus-powered applica-
tions. 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 a
valid supply voltage present. The Enable input logic can be interfaced
with both 3.3V and 5V logic. Both active-HIGH and active-LOW enable
logic versions are available. The IMP2525 devices are available in 8-pin
DIP and 8-pin SO packages.
IMP offers a complete family of USB power management products. For
dual-switch applications see the IMP2526 data sheet and for quad-switch
application, see the IMP2524. The single-switch IMP2525A features a
50% lower switch resistance, 0.07
.
2525_01.eps
OUT
NC/OUT
8
6
FLG
2
GND
3
IMP2525
Power
Switch
Gate
Control
Current
Limit
1.2V
Reference
UVLO
Thermal
Shutdown
Oscillator
EN
1
IN
7
Charge
Pump
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PDF描述 |
|---|---|
| IMP2526 | Dual USB High-Side Power Switch(雙USB高邊電源開關(guān)) |
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| IMP37-30JCM | Low Dropout Positiv Voltage Regulators |
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相關(guān)代理商/技術(shù)參數(shù) |
參數(shù)描述 |
|---|---|
| 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 |
| IMP2525-1BN | 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 |
| IMP2525-2BM | 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 |
| IMP2525-2BN | 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 |
| IMP2525A-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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