AMS2027
器件描述：SINGLE POWER DISTRIBUTION SWITCH
器件厂商：ADMOS [Advanced Monolithic Systems]
文件大小：46.29KB，共5页
Sponsor by e络盟器件资料摘要：
Advanced Monolithic Systems, Inc. 6680B Sierra Lane, Dublin, CA 94568 Phone (925) 556-9090 Fax (925) 556-9140
Advanced AMS2027
Monolithic SINGLE POWER DISTRIBUTION SWITCH
Systems
PRELIMINARY INFORMATION
FEATURES
• 110m Ω Typical (5V Input) High Side MOSFET Switch • 100 µA Maximum On-State Supply Current
• Short Circuit Protection • Available Active-High or Active-Low Enable
• Logic Overcurrent Output Error Flag • Available in Space Saving 8 lead SOIC and 8 Lead PDIP
• Logic Undervoltage Output Error Flag
• Logic Overheat Output Error Flag
• Enable Input Compatible With 3V and 5V Logic APPLICATIONS
• Controlled Rise and Fall Times Limit Current • USB Power Management
Surges and Minimize EMI • Hot Plug-In Power Supplies
• Undervoltage Lock-Out Guarantees the Switch is • Battery-Charger Circuits
Off At Start-up
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 Ω 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 OPER. TEMP
8 LEAD SOIC 8 LEAD PDIP RANGE
AMS2027S AMS2027P -40 °C to 85 °C
8 LEAD SOIC/ 8LEAD PDIP
1
2
8
4
3
7
5
6 OUTPUT
N/C
INPUT
ENABLE
GROUND
OUTPUT
N/C
ERROR
Advanced AMS2027
Monolithic SINGLE POWER DISTRIBUTION SWITCH
Systems
PRELIMINARY INFORMATION
FEATURES
• 110m Ω Typical (5V Input) High Side MOSFET Switch • 100 µA Maximum On-State Supply Current
• Short Circuit Protection • Available Active-High or Active-Low Enable
• Logic Overcurrent Output Error Flag • Available in Space Saving 8 lead SOIC and 8 Lead PDIP
• Logic Undervoltage Output Error Flag
• Logic Overheat Output Error Flag
• Enable Input Compatible With 3V and 5V Logic APPLICATIONS
• Controlled Rise and Fall Times Limit Current • USB Power Management
Surges and Minimize EMI • Hot Plug-In Power Supplies
• Undervoltage Lock-Out Guarantees the Switch is • Battery-Charger Circuits
Off At Start-up
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 Ω 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 OPER. TEMP
8 LEAD SOIC 8 LEAD PDIP RANGE
AMS2027S AMS2027P -40 °C to 85 °C
8 LEAD SOIC/ 8LEAD PDIP
1
2
8
4
3
7
5
6 OUTPUT
N/C
INPUT
ENABLE
GROUND
OUTPUT
N/C
ERROR