AP1530 Datasheet, PDF (1/8 Pages) Diodes Incorporated – PWM CONTROL 3A STEP-DOWN CONVERTER

AP1530
PWM CONTROL 3A STEP-DOWN CONVERTER
Features
• Input voltage: 3.6V to 18V
• Output voltage: 0.8V to V_CC.
• Duty ratio: 0% to 100% PWM control
• Oscillation frequency: 300KHz typ.
• Soft-start, Current Limit, Enable function
• Thermal Shutdown function
• Built-in internal SW P-channel MOS
• SOP-8L Pb-Free Package
• Lead Free Finish/RoHS Compliant (Note 1)
General Description
AP1530 consists of step-down switching regulator with PWM control.
These devices include a reference voltage source, oscillation circuit,
error amplifier, internal PMOS.
AP1530 provides low-ripple power, high efficiency, and excellent
transient characteristics. The PWM control circuit is able to vary the
duty ratio linearly from 0 up to 100%. This converter also contains
an error amplifier circuit as well as a soft-start circuit that prevents
overshoot at startup. An enable function, an over current protect
function and a short circuit protect function are built inside, and
when OCP or SCP happens, the operation frequency will be
reduced from 300KHz to 30KHz. Also, an internal compensation
block is built in to minimum external component count.
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 up to 18V, it is also suitable for the operation via an AC
adapter.
Applications
• PC Motherboard
• LCD Monitor
• Graphic Card
• DVD-Video Player
• Telecom Equipment
• ADSL Modem
• Printer and other Peripheral Equipment
• Microprocessor core supply
• Networking power supply
Ordering Information
A P 1 5 30 X X X
Package
S : SOP-8L
Lead Free
L : Lead Free
Packing
-U : Tube
-13 : Taping
Note: 1. RoHS revision 13.2.2003. Glass and High Temperature Solder Exemptions Applied, see EU Directive Annex Notes 5 and 7.
Device
AP1530S
Lead-free
Package
Code
S
Packaging
(Note 2)
SOP-8L
Tube
Quantity
Part Number
Suffix
100
-U
13” Tape and Reel
Quantity
Part Number
Suffix
2500/Tape & Reel
-13
Note: 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.
AP1530 Rev. 1
1 of 8
www.diodes.com
MARCH 2007
© Diodes Incorporated