Line Card



【Basic Info】

【Product Feature】

* Fixed output voltages 2.8V, 3.3V, 3.5V, 4.2V, 4.5V, 5V
* Input voltage: 2.3 V to 5.5 V
* 600 mA (ADP2503) and 1000 mA (ADP2504) output options
* Uses tiny multilayer inductors and capacitors
* Current mode architecture for fast load and line transient response
* Total PCB space needed 16mm x 16mm x 1mm
* Internal synchronous rectifiers
* Internal compensation
* Soft start--YES
* Current mode architecture for fast load and line transient response
* Low shutdown current at 0.2uA
* Package: QFN-10 3mm*3mm
* Overtemperature protection, Short-circuit protection and Undervoltage lockout protection
* Input voltage: 2.3 V to 5.5 V
* Adjustable model output voltage range: 2.8 V to 5.5 V
* Operating Temperature─(-40℃~85℃)
* Small 10-lead 3 mm × 3 mm LFCSP (QFN) package
* 38 μA typical quiescent current
* 2.5 MHz operation
* Boost converter configuration
* Enable--YES
* Max output: 600mA/1000mA


* Wireless handsets
* Handheld digital speaker and media system
* Digital cameras/portable audio players
* Miniature hard disk power supplies
* USB powered devices


"The ADP2503/ADP2504 are high efficiency, low quiescent current step-up/step-down dc-to-dc converters that can operate at input voltages greater than, less than, or equal to the regulated output voltage. The power switches and synchronous rectifiers are internal to minimize external part count. At high load currents, the ADP2503/ADP2504 use a current-mode, fixed frequency pulse-width modulation (PWM) control scheme for optimal stability and transient response."

"The marketing executive for portable power product, Mr Arcadio Leon says” for RF, Audio application, many of them are running at input voltage of 2.8-3.6v, ADP2503/4 is suitable when PCB size and efficiency take into important consideration"

"Unique boost-buck configuration for excellent instantaneous Performance and high efficiency"

During logic-controlled shutdown, the input is disconnected from the output and draws less than 1 μA from the input source. Operating as boost converters, the ADP2503/ADP2504 feature a true load disconnect function that isolates the load from the power source.

"The ADP2503/ADP2504 can run from input voltages between 2.3 V and 5.5 V, allowing single lithium or lithium polymer cell, multiple alkaline or NiMH cells, PCMCIA, USB, and other standard power sources."