Advanced Monolithic Systems, Inc. www.advanced-monolithic.com Phone (925) 443-0722 Fax (925) 443-0723

Advanced AMS2115
Monolithic FAST TRANSIENT RESPONSE LOW DROPOUT REGULATOR
Systems


FEATURES APPLICATIONS
• Fast Transient Response • Microprocessor Supplies

• Dropout Voltage Defined by FET Used • Video Card Supplies
• Very Tight Load Regulation • Low Voltage Logic Supplies
• High Side Sense Current Limit • GTL Termination


GENERAL DESCRIPTION
The The AMS2115 is a single IC controller that drives an external N channel MOSFET as a source follower to produce a fast
transient response, low dropout voltage regulator. The fast transient load performance is obtained by eliminating expensive
tantalum or bulk electrolytic output capacitors in the most demanding modern microprocessor applications. Precision-trimmed
adjustable and fixed output voltage versions accommodate any required microprocessor power supply voltage. By selecting the
N-channel MOSFET RDS(ON) a very low dropout voltage can be achieved. A protection feature includes a high side current
limit amplifier that activates a circuit to limit the FET gate drive. A shutdown pin turns off the gate drive and some internal
circuits to reduce quiescent current. AMS2115 is offered in 8L SOIC and 8L PDIP package.

ORDERING INFORMATION:




8L SOIC
8L PDIP

1
2
8
4
3
7
5
6 GATE
COMP
INEG
S/D
VIN
GND
IPOS
FB
Top View


TYPICAL APPLICATION:



 

















 



 






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PACKAGE TYPE OPERATING JUNCTION
8L PDIP 8L SOIC TEMPERATURE RANGE
AMS2115P AMS2115S -0 to 125 C
AMS2115P-1.5 AMS2115S-1.5 -0 to 125 C
AMS2115P-1.8 AMS2115S-1.8 -0 to 125 C
AMS2115P-2.5 AMS2115S-2.5 -0 to 125 C
AMS2115P-3.3 AMS2115S-3.3 -0 to 125 C
AMS2115P-5.0 AMS2115S-5.0 -0 to 125 C