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IMP2525-2BN PDF预览

IMP2525-2BN

更新时间: 2024-10-28 05:39:15
品牌 Logo 应用领域
A1PROS /
页数 文件大小 规格书
32页 372K
描述
Quad USB Hiigh--Siide Power Swiittch wiitth Faulltt Dettecttiion

IMP2525-2BN 数据手册

 浏览型号IMP2525-2BN的Datasheet PDF文件第4页浏览型号IMP2525-2BN的Datasheet PDF文件第5页浏览型号IMP2525-2BN的Datasheet PDF文件第6页浏览型号IMP2525-2BN的Datasheet PDF文件第8页浏览型号IMP2525-2BN的Datasheet PDF文件第9页浏览型号IMP2525-2BN的Datasheet PDF文件第10页 
IMP2525  
P
OWER  
M
ANAGEMENT  
Key Features  
USB High-Side Power Switch  
– Single switch  
Meets or exceeds USB Rev. 1.1 and 2.0  
specification  
Low MOSFET RON (0.14at 3V)  
2.7V to 5.5V input operation  
– 0.14"ON" resistance at 3V  
– MIC2525 pin compatible  
Current limiting  
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 (RON) 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-Startfunction 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.  
Soft-start turn-on (1ms) prevents turn-on glitches  
500mA continuous load current  
MOSFET short-circuit current limit (1.25A max)  
Low supply current  
110µA ON state current, 1µA OFF state current  
Active-LOW or Active-HIGH Enable input  
3.3V or 5V logic compatibility  
Fault Flag indicates three fault conditions:  
Undervoltage  
Current limit  
Thermal shutdown  
Open-drain Fault Flag output  
2.4V Undervoltage Lockout (UVLO)  
Pin compatible with the Micrel MIC2525  
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.  
Applications  
USB power management  
USB hosts and self-powered hubs  
Battery-charger circuits and power supplies  
Block Diagrams  
7
8
IN  
OUT  
1
1.2V  
Reference  
NC/OUT  
6
EN  
Current  
Limit  
Power  
Switch  
Gate  
UVLO  
Control  
Thermal  
Shutdown  
2
FLG  
Charge  
3
Oscillator  
Pump  
GND  
IMP2525  
2525_01.eps  
© 2000 IMP, Inc.  
408-432-9100/www.impweb.com  
1

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