AP1506 Datasheet, PDF (1/13 Pages) Anachip Corp – 150KHz, 3A PWM Buck DC/DC Converter

AP1506
150KHz, 3A PWM BUCK DC/DC CONVERTER
Features
General Description
• Output Voltage: 3.3V, 5V, 12V and Adjustable Output
Version
• Adjustable Version Output Voltage Range, 1.23V to
18V+4%
• 150KHz +15% Fixed Switching Frequency
• Voltage Mode Non-Synchronous PWM Control
• Thermal-Shutdown and Current-Limit Protection
• ON /OFF Shutdown Control Input
• Operating Voltage can be up to 22V
• Output Load Current: 3A
• TO220-5L, TO263-5L Packages
• Low Power standby mode
• Built-in Switching Transistor On Chip
• Lead Free Finish/RoHS Compliant (Note 1)
The AP1506 series are monolithic IC designed for a step-down
DC/DC converter, and own the ability of driving a 3A load without
external transistor. Due to reducing the number of external
component, the board space can be saved easily. The external
shutdown function can be controlled by logic level and then come
into standby mode. The internal compensation makes feedback
control have good line and load regulation without external
design. Regarding protected function, thermal shutdown is to
prevent over temperature operating from damage, and current
limit is to prevent over current operating of the output switch. If
current limit function occurred and V_FB is down to 0.5V below, the
switching frequency will be reduced. The AP1506 series operate
at a switching frequency of 150KHz thus allowing smaller sized
filter components than what would be needed with lower
frequency switching regulators. Other features include a
guaranteed +4% tolerance on output voltage under specified
input voltage and output load conditions, and +15% on the
oscillator frequency. The output version included fixed 3.3V, 5V,
12V, and an adjustable type. The packages are available in a
standard 5-lead TO-220 or a 5-lead TO-263.
Applications
• Simple High-Efficiency Step-Down Regulator
• On-Card Switching Regulators
• Positive to Negative Converter
Ordering Information
AP1506 XX X X X
Output Version
Blank : Adjustable
12 : 12V
33 : 3.3V
50 : 5.0V
Package
Lead Free
T5: TO 220-5L L : Lead Free Package
K5: TO 263-5L
T5R: TO 220-5L(R)
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 (Note 2)
Package
Code
AP1506-XXK5
Lead-free
AP1506-XXT5
Lead-free
AP1506-XXT5R
Lead-free
K5
T5
T5R
Packaging
TO263-5L
TO220-5L
TO220-5L(R)
Tube
Quantity Part Number
Suffix
NA
NA
50
-U
50
-U
13” Tape and Reel
Quantity
Part Number
Suffix
800/Tape & Reel
-13
NA
NA
NA
NA
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.
AP1506 Rev. 2
1 of 13
www.diodes.com
NOVEMBER 2006
© Diodes Incorporated