AP1511 Datasheet, PDF (1/7 Pages) Anachip Corp – PWM Control 5A Step-Down Converter

Not Recommended
for New Designs
AP1511
PWM CONTROL 5A STEP-DOWN CONVERTER
Features
• Input voltage: 3.6V to 23V
• Output voltage: 0.8V to VCC
• 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
• Lead-Free Package: SOP-16L
• Lead Free Finish/RoHS Compliant (Note 1)
Applications
• Microprocessor core supply
• Networking power supply
• Telecom power supply
• LCD MNT, TV power supply
General Description
AP1511 consists of step-down switching regulator with PWM
control. These devices include a reference voltage source,
oscillation circuit, error amplifier, internal PMOS and etc.
AP1511 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-16L
mini-package, providing such outstanding features as low current
consumption. Since this converter can accommodate an input
voltage up to 23V, it is also suitable for the operation via an AC
adapter.
Ordering Information
AP1511 X X X
Package
S : SOP-16L
Lead Free
Packing
L : Lead Free -U : Tube
-13 : Tape & Reel
Note: 1. RoHS revision 13.2.2003. Glass and High Temperature Solder Exemptions Applied, see EU Directive Annex Notes 5 and 7.
Device
Package
Code
Packaging
(Note 2)
Tube
Quantity
Part Number
Suffix
13” Tape and Reel
Quantity
Part Number Suffix
AP1511S
S
SOP-16L 50
-U
2500/Tape & Reel
-13
Lead-free
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.
AP1511 Rev. 1
1 of 7
www.diodes.com
NOVEMBER 2007
© Diodes Incorporated