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參數(shù)資料
| 型號： | 2525 |
| 廠商： | Allegro MicroSystems, Inc. |
| 元件分類： | 基準電壓源/電流源 |
| 英文描述： | USB POWER CONTROL SWITCHES |
| 中文描述： | USB電源控制開關(guān) |
| 文件頁數(shù)： | 1/12頁 |
| 文件大小： | 201K |
| 代理商： | 2525 |
CONTACTFACTORY
I
A2525 (active-high) Improved Replacement for MIC2525-1
I
A2535 (active-low) Improved Replacement for MIC2525-2
Storage Temperature Range,
T
S
...........................
-65
°
C to 150
°
C
* Fault conditions that produce excessive
junction temperature will activate device
thermal shutdown circuitry. These conditions
can be tolerated but should be avoided.
D
2
2525
AND
2535
USB POWER CONTROL SWITCHES
A2525EM
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.
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.
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.
Features
I
2.7 V to 5.8 V Input
I
Up to 500 mA Continuous Load Current per Port
I
140 m
Maximum ON-Resistance
I
1.25 A Maximum Short-Circuit Current Limit
I
Individual Open-Drain Fault Flag Outputs
I
100
μ
A Typical ON-State Supply Current
I
<1
μ
A 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
Applications
I
USB Hosts and Self-Powered Hubs
I
USB Bus-Powered Hubs
I
Hot Plug-In Power Supplies
I
Battery-Charger Circuits
Note that the A2525EM (DIP) and the
A2525EL (SOIC) are electrically identical and
share a common terminal number assignment.
ABSOLUTE MAXIMUM RATINGS
Supply Voltage, V
IN
.....................
6.0 V
Output Voltage, V
OUT
..................
6.0 V
Output Current,
I
OUT
.................
Internally Limited
ENABLE Voltage Range,
V
EN
.........................
–0.3 V to 10 V
Fault Flag Voltage, V
FLG
..............
8.0 V
Fault Flag Current, I
FLG
.............
50 mA
Package Power Dissipation,
P
D
.................................
See Graph
Operating Temperature Range,
T
A
..........................
-40
°
C to +85
°
C
Junction Temperature, T
J
.......
+150
°
C*
1
2
3
4
5
6
7
8
EN
FLG
GND
NC
OUT
IN
NC
NC
Dwg. PP-070A
G
NC
NC
NC
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