AMS2026
FEATURES
•
110mΩ Typ. (5V Input) High Side MOSFET Switch
•
Short Circuit Protection
•
Overcurrent Protection
•
Thermal Protection
•
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
•
100µA 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 AMS2026 is a dual power distribution switch intended for applications where heavy capacitive loads and short-circuits are
likely to be encountered. The high-side switch is a 110mΩ 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 AMS2026 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. Continuous heavy overloads and short circuits will increase the
power dissipation in the switch; 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 AMS2026 is offered in the 8 lead SOIC package and the 8 lead PDIP package.
ORDERING INFORMATION
PACKAGE TYPE
8 LEAD SOIC
AMS2026S
8 LEAD PDIP
AMS2026P
OPER. TEMP
RANGE
-40°C to 85°C
PIN CONNECTIONS
8 LEAD SOIC/ 8 LEAD PDIP
ENABLE
ERROR
ERROR
ENABLE
1
2
3
4
8 OUTPUT
7
INPUT
6 GROUND
5
OUTPUT
Top View
1
Advanced Monolithic Systems
http://www.ams-semitech.com
AMS [ Advanced Monolithic Systems Ltd ]
