AP1507

150KHz, 3A PWM BUCK DC/DC CONVERTER

AP1507 Rev. 1

1 of 10

FEBRUARY 2007

www.diodes.com

Lead-free

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Output Voltage: 3.3V, 5V, 12V and Adjustable Output

Version

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Adjustable Version Output Voltage Range, 1.23V to

18V+4%

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150KHz +15% Fixed Switching Frequency

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Voltage Mode Non-Synchronous PWM Control

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Thermal-Shutdown and Current-Limit Protection

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Operating Voltage can be up to 22V

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Output Load Current: 3A

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Lead Free Package: TO252-5L

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Low Power Standby Mode

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Built-in Switching Transistor On Chip

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Lead Free Package: TO252-5L

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Lead Free Finish/RoHS Compliant (Note 1)

The AP1507 is a monolithic IC designed for a step-down DC/DC

converter and is capable of driving a 3A load without an external

transistor. Due to reducing the number of external components,

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 the feedback

control have good line and load regulation without an external

design. Regarding the protected function, the thermal shutdown

is to prevent over temperature operating from damaging the

device, and current limit is against over current operating of the

down to 0.5V below, the switching frequency will be reduced. The

AP1507 series operates 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 a fixed 3.3V,

5V, 12V, and an adjustable type. AP1507 is available in a 5-lead

TO-252 lead-free package.

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Simple High-Efficiency Step-Down Regulator

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On-Card Switching Regulators

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Positive to Negative Converter

Ordering Information

Package

D5: TO252-5L

Output Version

AP1507 - XX X X X

Packing

-U : Tube

-13 : Taping

Blank : Adjustable

33 : 3.3V

50 : 5.0V

12 : 12V

Lead Free

L : Lead Free

Note:

1. RoHS revision 13.2.2003. Glass and High Temperature Solder Exemptions Applied, see EU Directive Annex Notes 5 and 7.

Note:

2. Pad layout as shown on Diodes Inc. suggested pad layout document AP02001, which can be found on our website at

Features

General Description

Applications

Tube/Bulk

13” Tape and Reel

Device

Package

Code

Packaging

(Note 2)

Quantity

Part Number

Suffix

Quantity

Part Number

Suffix

AP1507-XXD5

D5

TO252-5L

80

-U

2500/Tape & Reel

-13