General Description
   AP1605 consists of CMOS step-down switching regulator with PWM/PFM dual mode control. These devices include a reference voltage source, oscillation circuit, error amplifier, internal PMOS and etc.

FEATUREs
- Low current consumption:
   In operation: 100µA max.
   Power off: 2µA max.
- Input voltage: 2.5V to 7V.
   Adjustable version (+2.5%)
- PWM/PFM dual Mode
- Oscillation frequency: 300KHz (Typ.)
- With a power-off function.
- Built-in internal SW P-channel MOS
- SOP-8L/TSSOP-8L Package.

APPLICATIONs
- On-board power supplies of battery devices for
   portable telephones, electronic notebooks, PDA,
   and other hand-held sets.
- Power supplies for audio equipment, including
   portable CD players and headphone stereo
   equipment.
- Fixed voltage power supply for cameras, video
   equipment and communications equipment.
- Power supplies for microcomputers.
- Conversion from four Ni-H or Ni-Cd cells or two
   lithium-ion cells to 3.3V/3V.
- Conversion of AC adapter input to 5V/3V.