ap1503sla ETC-unknow, ap1503sla Datasheet

ap1503sla

Manufacturer Part Number

ap1503sla

Description

300khz 2.5a Buck Dc/dc Converter

Manufacturer

ETC-unknow

Datasheet

1.AP1503SLA.pdf (5 pages)

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300Khz, 2.5A PWM Buck DC/DC Converter

- Output voltage: 3.3V

- 300KHz +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: 2.5A

- SOP-7L packages

- Low power standby mode

- Built-in switching transistor on chip

- Simple High-efficiency step-down regulator

- On-card switching regulators

- Positive to negative converter

- DSL Modems

- Portable Computers

- Regulated Wall Adapters

- Distributed Power

This datasheet contains new product information. Anachip Corp. reserves the rights to modify the product specification without notice. No liability is assumed as a result of the use of

this product. No rights under any patent accompany the sale of the product.

Pin Assignment

Features

Applications

VIN

SOP7 with Heat Sink

GND

COMP

1/5

The AP1503 series are monolithic ICs designed for

step-down DC/DC converters, and own the ability

of driving a 2.5A load without additional transistor

components. 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 external compensation makes feedback

control have good line and load regulation.

Regarding protected function, thermal shutdown is

to prevent over temperature operating from damage,

and current limit is against over current operating of

the output switch. The AP1503 series operates at a

switching frequency of 300KHz thus allowing

smaller sized filter components than what would be

needed with lower frequency switching regulators.

Other features include a guaranteed +2% 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. The packages are available in a standard

SOP-7 lead package.

COMP

Name

General Description

Pin Descriptions

GND

Operating voltage input

Boost pin

ON/OFF Shutdown

Output voltage feedback control

Compensation pin

Ground

Switching output

Description

AP1503

Rev 1.0 Sep. 29, 2004

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ap1503sla Summary of contents

Page 1

PWM Buck DC/DC Converter Features - Output voltage: 3.3V - 300KHz +15% fixed switching frequency - Voltage mode non-synchronous PWM control - Thermal-shutdown and current-limit protection - ON/OFF shutdown control input - Operating voltage can ...

Page 2

PWM Buck DC/DC Converter Ordering Information Output version -33 : 3.3V Block Diagram Current 1.235V Source Reference bias + Amp _ FB Anachip Corp. www.anachip.com.tw AP1503 Lead Free Package S : SOP-7L Blank : ...

Page 3

PWM Buck DC/DC Converter Absolute Maximum Ratings Symbol Parameter V Supply Voltage CC V ON/OFF Pin input voltage SD V Feedback Pin voltage FB V Output voltage to Ground OUT P Power dissipation D T Storage temperature ST ...

Page 4

PWM Buck DC/DC Converter Electrical Characteristics (Continued) Symbol Parameter V Output voltage OUT AP1503-3.3V η Specifications with boldface type are for full operating temperature range, the other type are for T Typical Application Circuit 7V DC Input 1 ...

Page 5

PWM Buck DC/DC Converter Marking Information Logo Output Type 33 : 3.3V Package Information Package Type: SOP- β Dimensions In Millimeters Symbol Min. A 5.79 B1 3.83 B2 3.78 C 4.80 C1 1.57 C2 0.32 C3 ...

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