Diodes AP1605 - Manual

AP1605
PWM/PFM DUAL-MODE STEP-DOWN SWITCHING
REGULATOR
AP1605 Rev. 2 1 of 8 FEBRUARY 2009
www.diodes.com © Diodes Incorporated
Lead-free
•
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
• Lead Free package: SOP-8L
• SOP-8L: Available in “Green” Molding Compound
(No Br, Sb)
• Lead Free Finish/ RoHS Compliant (Note 1)
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.
AP1605 provides low-ripple power, high efficiency, and excellent
transient characteristics. The PWM/PFM control circuit is able to
vary the duty ratio linearly 0%~0.25% (PFM) and 25%~100%
(PWM).
With the addition of an internal P-channel Power MOS, a coil,
capacitors, and a diode connected externally, these ICs can function
as step-down switching regulators. They serve as ideal power
supply units for portable devices when coupled with the SOP-8L
mini-package, providing such outstanding features as low current
consumption. Since this converter can accommodate an input
voltage of up to 7V, it is also ideal when operating via an AC
adapter.
• On-board power supply 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
AP 1605 S X - 13
Package Packing Lead Free
13 : Tape & Reel
G : Green
S : SOP-8L L : Lead Free
Device
Package
Code
Packaging
(Note 2)
13” Tape and Reel
Quantity Part Number Suffix
AP1605SL-13 S SOP-8L 2500/Tape & Reel -13
AP1605SG-13 S SOP-8L 2500/Tape & Reel -13
Notes: 1. EU Directive 2002/95/EC (RoHS). All applicable RoHS exemptions applied. Please visit our website at
http://www.diodes.com/products/lead_free.html .
2. Pad layout as shown on Diodes Inc. suggested pad layout document AP02001, which can be found on our website at
http://www.diodes.com/datasheets/ap02001.pdf .
Features General Description
Applications
Ordering Information