BD3507HFV_08 Datasheet, PDF (1/16 Pages) Rohm – Ultra Low Dropout Linear Regulators for PC Chipsets

TECHNICAL NOTE
High-performance Regulator IC Series for PCs
Ultra Low Dropout
Linear Regulators for PC Chipsets
BD3507HFV
●Description
The BD3507HFV is suited for power supply for chipset bus. Though small in size, BD3507HFV adopts power PKG with
radiation fins, and it therefore can be used for a regulator up to 550mA. Because it adopts Nch MOSFET and can form a
ultra low dropout power supply of R_ON=300mΩ (TYP), BD3507HFV can compose a high-efficiency system, though it is of a
linear type power supply. The output voltage can be set by VREF terminal and can be synchronized with other power
supply. In addition, it can be used as a high side switch (R_ON = 300mΩ/lo = 550mA) of low-voltage power supply line.
Because ceramic capacitors can be used for output capacitors, BD3507HFV contributes to downsizing and reduced
thickness not only of IC but also of sets.
●Features
1) Built-in high-accuracy buffer circuit (can be set to 0.65-2.7V)
2) Adoption of ceramic capacitors
3) Built-in enable function (0μA at standby)
4) Built-in current limiting circuit (550mA Max)
5) Built-in undervoltage lockout circuit (UVLO)
6) Built-in thermal shutdown circuit (TSD)
7) Adoption of ultra-small-size high-power HVSOF6 package (3.0 x 1.6 x 0.75 mm)
●Applications
Notebook PC, desktop PC, digital camera, digital home appliances
Oct. 2008