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參數(shù)資料
| 型號(hào)： | IMP2526 |
| 廠商： | IMP INC. |
| 英文描述： | Dual USB High-Side Power Switch(雙USB高邊電源開(kāi)關(guān)) |
| 中文描述： | 雙USB高側(cè)電源開(kāi)關(guān)（雙的USB高邊電源開(kāi)關(guān)） |
| 文件頁(yè)數(shù)： | 1/10頁(yè) |
| 文件大小： | 216K |
| 代理商： | IMP2526 |
1999 IMP, Inc.
408-432-9100/www.impweb.com
1
Key Features
Applications
N
USB host and self-powered hubs
N
Bus-powered hubs
N
Hot plug-in power supplies
N
Battery chargers
N
USB Rev. 1.1 Compliant
N
2.7V to 5.5V input operation
N
Low MOSFET ON resistance (0.1
at 5V)
N
Low supply current
– 110μA ON state current, 1μA OFF state current
N
500mA continuos load current per switch
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
Active HIGH(-1) and active LOW(-2) enable
N
Pin compatible with the Micrel MIC2526
Block Diagrams
IMP2526
P
OWER
M
ANAGEMENT
Dual USB High-Side P
o
o
w
w
er
er
Switc
h
h
– Dual switc
h
h
–
–
0.
0.
1
1
4
4
/0.
1
1
"ON" r
– MIC2526 pin com
The IMP2526 dual high-side power switch IC is designed for self-
powered and bus-powered Universal Serial Bus (USB) power supply
and general purpose power management applications. ON resistance is
a low 100m
at 5V input and 140m
at 3V input.
esis
t
t
ance at 3/5V
patible
The IMP2526 conforms to the new USB Revision 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 IMP2526 “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
a 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 IMP2526 devices are available in 8-pin DIP and 8-pin SO packages
and are pin compatible replacements for the Micrel MIC2526-1/-2. IMP
offers a complete family of USB power management products. For sin-
gle-switch applications see the IMP2525 and IMP2525A data sheets. The
single-switch IMP2525A features a 50% lower switch resistance, 0.07
.
For quad-switch applications, refer to the IMP2524 data sheet.
2526_01.eps
FLGB
OUTB
3
GND
6
5
IN
7
OUTA
8
FLGA
2
IMP2526
1.2V
Reference
Thermal
Shutdown
Gate
Control
UVLO
Current
Limit
Gate
Control
Current
Limit
Charge
Pump
Charge
Pump
Oscillator
ENB
4
ENA
1
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相關(guān)代理商/技術(shù)參數(shù) |
參數(shù)描述 |
|---|---|
| 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 |
| IMP2526-2BM | 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 |
| IMP2526-2BN | 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 |
| IMP2527 | 制造商:IMP 制造商全稱:IMP 功能描述:Quad USB High-Side Power Switch with Fault Detection |
| IMP2527-1BN | 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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