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參數(shù)資料
| 型號： | CM2026IS |
| 廠商： | Electronic Theatre Controls, Inc. |
| 元件分類： | 基準電壓源/電流源 |
| 英文描述： | DUAL USB POWER CONTROL SWITCH |
| 中文描述： | 雙USB電源控制開關 |
| 文件頁數(shù)： | 1/7頁 |
| 文件大?。?/td> | 255K |
| 代理商： | CM2026IS |
CM2026
D
UAL
USB P
OWER
C
ONTROL
S
WITCH
GENERAL DESCRIPTION
The CM2026 is a dual integrated high-side power switch with
independent enable and flag functions, optimized for
self-powered and bus-powered Universal Serial Bus (USB)
applications. Few external components are necessary to
satisfy USB requirements.
The CM2026 satisfies the following USB requirements: each
switch channel supplies up to 500mA as required by USB
downstream devices; the switch's low on-resistance meets
USB voltage drop requirements; fault current is limited to
typically 750mA, well below the UL 25VA safety requirements;
and a flag output is available to indicate fault conditions to the
local USB controller. Soft start eliminates the momentary
voltage drop on the upstream port that may occur when the
switch is enabled in bus-powered applications.
Additional features include thermal shutdown to prevent
catastrophic switch failure from high-current loads,
undervoltage lockout (UVLO) to ensure that the device
remains off unless there is a valid input voltage present, and
3.3V and 5V logic compatible enable inputs.
The CM2026 is available in active-high version in 8-pin DIP
and SOIC packages.
APPLICATIONS
USB host and self-powered hubs
USB bus-powered hubs
Hot plug-in power supplies
Battery-charger circuit
2002/05/29
Rev. 2
Champion Microelectronic Corporation
Page 1
FEATURES
Compliant to USB specifications
UL Recognized Component
2 independent switches
3V to 5.5V input
500mA minimum continuous load current per port
140m
Ω
maximum on-resistance
1.25A maximum short circuit current limit
Individual open-drain fault flag pins
110uA typical on-state supply current
1uA typical off-state supply current
Output can be forced higher than input (off-state)
Thermal shutdown
2.4V typical undervoltage lockout (UVLO)
1ms turn-on (soft-start) and fast turnoff
Active-high enable version
8-pin SOIC and DIP packages
PIN CONFIGURATION
PDIP-08/SOP-08
(Top View)
1
2
3
4
8
7
6
5
EN1
FLG1
FLG2
EN2
OUT1
IN
GND
OUT2
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