TECHNICAL NOTE
High-performance
Regulator IC Series for PCs
Ultra Low Dropout
Linear
Regulators for PC
BD3550HFN, BD3551HFN, BD3552HFN
(0.
5～2.
0A)
● Description BD3550HFN,BD3551HFN,BD3552HFN ultra low-dropout linear chipset
regulator operates from a very low input supply, and offers ideal performance in low input voltage to low output voltage applications.
It incorporates a built-in N-MOSFET power
transistor to minimize the input-to-output voltage differential to the ON resistance (RON=100mΩ BD3552HFN) level.
By lowering the dropout voltage in this way, the
regulator realizes high current output (Iomax=2.
0A BD3552HFN) with reduced conversion loss, and thereby obviates the switching r...