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A2535EM PDF预览

A2535EM

更新时间: 2024-01-04 21:17:36
品牌 Logo 应用领域
急速微 - ALLEGRO 开关功率控制
页数 文件大小 规格书
12页 202K
描述
USB POWER CONTROL SWITCHES

A2535EM 数据手册

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2535 AND  
2525  
USB POWER CONTROL SWITCHES  
The A2525EL/M and A2535EL/M are integrated high-side power  
switches, optimized for self-powered and bus-powered Universal Serial  
Bus (USB) applications. Few external components are necessary to  
satisfy USB requirements. The A2525EL/EM ENABLE inputs are  
active high; the A2535EL/EM are active low.  
A2525EM  
1
2
3
4
8
7
6
5
OUT  
IN  
EN  
FLG  
GND  
NC  
All devices are ideally suited for USB applications. Each switch  
channel supplies up to 500 mA as required by USB peripheral devices.  
In addition, the switch’s low on-resistance permits achieving the USB  
voltage-drop requirements. Fault current is limited to typically  
750 mA, satisfying the UL 25 VA safety requirements, and a flag  
output is available to indicate a fault condition to the local USB  
controller. Momentary voltage drops that may occur on the upstream  
port when the switch is enabled in bus-powered applications is elimi-  
nated by a “soft start” feature.  
NC  
NC  
NC  
NC  
NC  
Dwg. PP-070A  
Note that the A2525EM (DIP) and the  
A2525EL (SOIC) are electrically identical and  
share a common terminal number assignment.  
Additional features include thermal shutdown to prevent catastrophic  
switch failure from high-current loads, undervoltage lockout to ensure  
that the device remains OFF unless there is a valid input voltage  
present, and 3.3 V and 5 V logic-compatible enable inputs.  
These switches are provided in 8-pin mini-DIP (suffix ‘M’) and  
8-lead SOIC (suffix ‘L’) packages.  
ABSOLUTE MAXIMUM RATINGS  
Supply Voltage, VIN ..................... 6.0 V  
Output Voltage, VOUT .................. 6.0 V  
Features  
I 2.7 V to 5.8 V Input  
Output Current,  
IOUT ................. Internally Limited  
ENABLE Voltage Range,  
VEN ......................... –0.3 V to 10 V  
Fault Flag Voltage, VFLG .............. 8.0 V  
Fault Flag Current, IFLG ............. 50 mA  
Package Power Dissipation,  
PD ................................. See Graph  
Operating Temperature Range,  
I Up to 500 mA Continuous Load Current per Port  
I 140 mMaximum ON-Resistance  
I 1.25 A Maximum Short-Circuit Current Limit  
I Individual Open-Drain Fault Flag Outputs  
I 100 µA Typical ON-State Supply Current  
I <1 µA Typical OFF-State Supply Current  
I Outputs Can be Forced Higher Than Input (off-state)  
I Thermal Shutdown  
I 2.2 V Typical Undervoltage Lockout  
I 0.6 ms Turn On (soft-start) and Fast Turn Off  
I A2525 (active-high) Improved Replacement for MIC2525-1  
I A2535 (active-low) Improved Replacement for MIC2525-2  
TA .......................... -40°C to +85°C  
Junction Temperature, TJ ....... +150°C*  
Storage Temperature Range,  
TS ........................... -65°C to 150°C  
Applications  
* Fault conditions that produce excessive  
junction temperature will activate device  
thermal shutdown circuitry. These conditions  
can be tolerated but should be avoided.  
I USB Hosts and Self-Powered Hubs  
I USB Bus-Powered Hubs  
I Hot Plug-In Power Supplies  
I Battery-Charger Circuits  

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