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參數資料
| 型號： | AMS2027S |
| 廠商： | Advanced Monolithic Systems, Inc. |
| 元件分類： | 基準電壓源/電流源 |
| 英文描述： | SINGLE POWER DISTRIBUTION SWITCH |
| 中文描述： | 單電源配置開關 |
| 文件頁數： | 1/5頁 |
| 文件大小： | 46K |
| 代理商： | AMS2027S |
Advanced Monolithic Systems, Inc.
6680B Sierra Lane, Dublin, CA 94568 Phone (925) 556-9090 Fax (925) 556-9140
Advanced
Monolithic
Systems
AMS2027
SINGLE POWER DISTRIBUTION SWITCH
PRELIMINARY INFORMATION
FEATURES
110m
Typical (5V Input) High Side MOSFET Switch
Short Circuit Protection
Logic Overcurrent Output Error Flag
Logic Undervoltage Output Error Flag
Logic Overheat Output Error Flag
Enable Input Compatible With 3V and 5V Logic
Controlled Rise and Fall Times Limit Current
Surges and Minimize EMI
Undervoltage Lock-Out Guarantees the Switch is
Off At Start-up
100
μ
A Maximum On-State Supply Current
Available Active-High or Active-Low Enable
Available in Space Saving 8 lead SOIC and 8 Lead PDIP
APPLICATIONS
USB Power Management
Hot Plug-In Power Supplies
Battery-Charger Circuits
PRODUCT DESCRIPTION
The AMS2027 is a power distribution switch intended for application where heavy capacitive loads and short-circuits are
likely to be encountered. The high-side switch is a 110m
N-channel MOSFET. The switch is controlled by a logic enable
input compatible with 3V and 5V logic and is available in active-high or active-low enable. The internal charge pump,
designed to control the power switch rise and fall time to minimize current surges during switching, also provides the gate
drive. Requiring no external components the charge pump allows operation from supplies as low as 3.3V. When an overload
or a short circuit is encountered the AMS2027 limits the output current to a safe level by switching into a constant-current
mode and the overcurrent logic output error flag is set to a low. The power dissipation in the switch will be increased by
continuous heavy overloads and short circuits; this will cause the junction temperature to rise. The thermal protection circuit
shuts the power switch off to prevent damage. Once the device has cooled sufficiently, it will turn on automatic. An under
voltage lock-out is provided to insure that the power switch is in the Off state at start-up.
The AMS2027 is offered in the 8 lead SOIC package and the 8 lead PDIP package and is rated operational over a -40
°
C to
85
°
C temperature range.
ORDERING INFORMATION
PIN CONNECTIONS
PACKAGE TYPE
8 LEAD SOIC
AMS2027S
OPER. TEMP
RANGE
-40
°
C to 85
°
C
8 LEAD PDIP
AMS2027P
8 LEAD SOIC/ 8LEAD PDIP
1
2
8
4
3
7
5
6
OUTPUT
N/C
INPUT
ENABLE
GROUND
OUTPUT
N/C
ERROR
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