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參數(shù)資料
| 型號(hào)： | IMP2525A |
| 廠商： | IMP INC. |
| 英文描述： | Low-Resistance USB High-Side Power Switch(USB高邊電源開關(guān)) |
| 中文描述： | 低電阻的USB高端功率開關(guān)（的USB高邊電源開關(guān)） |
| 文件頁(yè)數(shù)： | 1/8頁(yè) |
| 文件大?。?/td> | 218K |
| 代理商： | IMP2525A |
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
(0.07
at 3V)
N
Pin compatible with the Micrel MIC2525
– 50% lower than MIC2525
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 (2.5A 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
Open-drain Fault Flag indicates three fault
conditions:
– Undervoltage
– Current limit
– Thermal shutdown
N
2.4V Undervoltage Lockout (UVLO)
Block Diagrams
IMP2525A
P
OWER
M
ANAGEMENT
Lo
w
w
-R
esis
t
t
USB High-Side P
o
o
w
w
- Sing
le switc
h
h
- 0.0
7
7
"ON" r
esis
t
t
- 50% lo
w
w
er r
esis
t
t
- MIC2525 pin com
ance
er Switc
h
h
ance at 3V
ance t
han MIC2525
patible
The IMP2525A high-side power switch IC is designed for self-powered
and bus-powered Universal Serial Bus (USB) power supply and power
management applications. The IMP2525A conforms to USB standards
with a low output switch ON-resistance (R
ON
) and minimal voltage drop
across the switch. Switch resistance is 50% lower than the MIC2525. The
fault current is limited to 1.5A typically, and a flag output conveys fault
conditions to the local USB controller. The IMP2525A 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 charg-
ing a capacitive load in bus-powered applications. 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 IMP2525Adevices 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 IMP2525 matches the
performance of the Micrel MIC2525.
2525A_01.eps
OUT
OUT
8
6
FLG
2
GND
3
IMP2525A
Power
Switch
Gate
Control
Current
Limit
50% Lower
Resistance
Than MIC2525
1.2V
Reference
UVLO
Thermal
Shutdown
Oscillator
EN
1
IN
7
Charge
Pump
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PDF描述 |
|---|---|
| IMP2525 | USB High-Side Power Switch(USB高邊電源開關(guān)) |
| IMP2526 | Dual USB High-Side Power Switch(雙USB高邊電源開關(guān)) |
| IMP37-25JCM | Low Dropout Positiv Voltage Regulators |
| 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 |
|---|---|
| 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 |
| IMP2525A-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 |
| IMP2525A-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 |
| IMP2525A-2BNIMP2526-1BM | 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 |
| IMP2526-1BN | 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 |
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