AP1520

更新时间： 2024-11-16 04:32:39

品牌	Logo	应用领域
易亨 - ANACHIP		转换器
页数	文件大小	规格书
7页	194K
描述
PWM Control 2A Step-Down Converter

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中文翻译

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数据手册

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AP1520 数据手册

This Anachip version datasheet is replaced

with Diodes Inc. datasheet AP1520

AP1520

PWM Control 2A Step-Down Converter

Features

General Description

- Input voltage: 3.6V to 23V.

AP1520 consists of step-down switching regulator

with PWM control. These devices include a reference

voltage source, oscillation circuit, error amplifier,

internal PMOS and etc.

- 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

AP1520 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.

- Built-in internal SW P-channel MOS

- SOP-8L Pb-Free Package.

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

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 23V, it is also

suitable for the operation via an AC adapter.

Pin Assignments

Pin Descriptions

Name

Description

Feedback pin.

Power-off pin

H: Normal operation

(Step-down operation)

L: Step-down operation

stopped

Vss

OCSET

VCC

(All circuits deactivated)

Add an external resistor to set

max output current.

IC power supply pin

Switch Pin. Connect external

inductor/diode here. Minimize

trace area at this pin to reduce

EMI.

AP1520

OCSET

Output

VCC

Output

5、6

7、8

Output

VSS

GND Pin

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.

Rev. 1.5 Apr 10, 2006

1/7

12 3 4 5 6 7

中文翻译

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与AP1520相关器件

型号	品牌	获取价格	描述	数据表
AP1520_09	DIODES	获取价格	PWM CONTROL 2A STEP-DOWN CONVERTER
AP1520S	ANACHIP	获取价格	PWM Control 2A Step-Down Converter
AP1520S	DIODES	获取价格	PWM CONTROL 2A STEP-DOWN CONVERTER
AP1520SA	ANACHIP	获取价格	PWM Control 2A Step-Down Converter
AP1520SG-13	DIODES	获取价格	PWM CONTROL 2A STEP-DOWN CONVERTER
AP1520SG-U	DIODES	获取价格	Switched Capacitor Converter, Voltage-mode, 2A, 360kHz Switching Freq-Max, PDSO8, GREEN, S
AP1520SL-13	DIODES	获取价格	PWM CONTROL 2A STEP-DOWN CONVERTER
AP1520SL-U	DIODES	获取价格	PWM CONTROL 2A STEP-DOWN CONVERTER
AP1521	ANACHIP	获取价格	White LED Step-Up Converter
AP1521W	ANACHIP	获取价格	White LED Step-Up Converter

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