ADP2108-1.2-EVALZ DESCRIPTION
The ADP2108 is a high efficiency, low quiescent current stepdown dc-to-dc converter manufactured in two differentpackages. The total solution requires only three tiny externalcomponents. It uses a proprietary, high speed current mode,constant frequency PWM control scheme for excellent stabilityand transient response. To ensure the longest battery life inportable applications, the ADP2108 has a power save mode thatreduces the switching frequency under light load conditions.
ADP2108-1.2-EVALZ FEATURES
Peak efficiency: 95%
3 MHz fixed frequency operation
Typical quiescent current: 18 μA
Maximum load current: 600 mA
Input voltage: 2.3 V to 5.5 V
Uses tiny multilayer inductors and capacitors
Current mode architecture for fast load and line
transient response
100% duty cycle low dropout mode
Internal synchronous rectifier
Internal compensation
Internal soft start
Current overload protection
Thermal shutdown protection
Shutdown supply current: 0.2 μA
Available in
5-ball WLCSP
5-lead TSOT
Supported by ADIsimPower? design tool
ADP2108-1.2-EVALZ APPLICATIONS
PDAs and palmtop computers
Wireless handsets
Digital audio, portable media players
Digital cameras, GPS navigation units
