Datasheet > AIC1578

AIC1578

更新时间： 2024-02-23 10:24:58

品牌	Logo	应用领域
沛亨 - AIC		转换器
页数	文件大小	规格书
7页	266K
描述
High-Efficiency, Step-Down DC/DC Converter

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技术参数
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AIC1578 技术参数

是否Rohs认证：	符合	生命周期：	Contact Manufacturer
包装说明：	SOP, SOP8,.25	Reach Compliance Code：	compliant
风险等级：	5.83	控制模式：	VOLTAGE-MODE
JESD-30 代码：	R-PDSO-G8	端子数量：	8
最高工作温度：	85 °C	最低工作温度：	-40 °C
最大输出电流：	2 A	封装主体材料：	PLASTIC/EPOXY
封装代码：	SOP	封装等效代码：	SOP8,.25
封装形状：	RECTANGULAR	封装形式：	SMALL OUTLINE
认证状态：	Not Qualified	子类别：	Switching Regulator or Controllers
表面贴装：	YES	最大切换频率：	280 kHz
技术：	CMOS	温度等级：	INDUSTRIAL
端子形式：	GULL WING	端子节距：	1.27 mm
端子位置：	DUAL

AIC1578 数据手册

AIC1578

High-Efficiency, Step-Down DC/DC Converter

ꢀ^FEATURES

• 4V to 20V Input Voltage Operation.

• High Efficiency (up to 95%).

ꢀ^DESCRIPTION

The AIC1578 is a high performance step-down

DC/DC converter, designed to drive an external

P-channel MOSFET to generate programmable

output voltages. Two main schemes of Pulse-

Skipping and Pulse-Frequency Modulation are

employed to maintain low quiescent current and

high conversion efficiency under wide ranges of

input voltage and loading condition. The

AIC1578 delivers 10mA to 2A of output current

with 87%~93% efficiency at V_IN=9V, V_OUT=5V

condition. A current sense comparator with both

inverting and non-inverting input uncommitted is

included to provide the crucial function of either

current limit protection or constant output current

control. When the AIC1578 is used in a high-side

current sensing step-down constant current

source, the efficiency is typically greater than

90%. Duty cycle can be adjusted to greater than

90% by connecting a resistor from DUTY pin to

V_IN. Quiescent current is about 90µA and can be

reduced to 8µA in shutdown mode. Switching

frequency being in around 90KHz to 280KHz

range, small size switching components are ideal

for battery powered portable equipment.

• Low Quiescent Current at 90µA.

• Pulse-Skipping and Pulse-Frequency Modulation.

• Inputs-Uncommitted Current Sense Comparator.

• Duty Cycle Adjustable.

• 90KHz to 280KHz Oscillator Frequency.

• Power-Saving Shutdown Mode (8µA Typical).

• Push-Pull Driver Output.

ꢀ^APPLICATIONS

• Notebook 5V/3.3V Main Power

• Step-Down DC/DC Converter Module.

• Constant Current Source for Battery Chargers.

ꢀ^{TYPICAL APPLICATION CIRCUIT}

V_IN

**RS

* L1

IRF9Z34

33 H

220µF

1N5820

CS+

VIN

R_DUTY

DUTY

CS -

SHDN

DRI

GND

Control

AIC1578

*Sumida MPP CORE

**Charge current=57mV/RS

Constant Current Source for Battery Charger

ꢀ^{ORDERING INFORMATION}

AIC1578 XX

PIN CONFIGURATION

ORDER NUMBER

TOP VIEW

PACKAGE TYPE

N: PLASTIC DIP

S: SMALL OUTLINE

AIC1578CN

VIN

CS+

CS-

(PLASTIC DIP)

DUTY

TEMPERATURE RANGE

DRI

SHDN

C: 0°C~+70°C

AIC1578CS

GND

(PLASTIC SO)

Analog Integrations Corporation 4F, 9, Industry E. 9th Rd, Science Based Industrial Park, Hsinchu Taiwan, ROC

DS-1578-02 Dec 27, 00 TEL: 886-3-5772500 FAX: 886-3-5772510

www.analog.com.tw

12 3 4 5 6 7

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与AIC1578相关器件

型号	品牌	获取价格	描述	数据表
AIC1578CN	AIC	获取价格	High-Efficiency, Step-Down DC/DC Converter
AIC1578CS	AIC	获取价格	High-Efficiency, Step-Down DC/DC Converter
AIC1579	AIC	获取价格	Step-Down Switching Regulator Controller
AIC1579CN	AIC	获取价格	Step-Down Switching Regulator Controller
AIC1579CS	AIC	获取价格	Step-Down Switching Regulator Controller
AIC1579L	AIC	获取价格	Step-Down Switching Regulator Controller
AIC1579LCN	AIC	获取价格	Step-Down Switching Regulator Controller
AIC1579LCS	AIC	获取价格	Step-Down Switching Regulator Controller
AIC1580	AIC	获取价格	Simple PWM Power Regulator with Shutdown
AIC1580CN	AIC	获取价格	Simple PWM Power Regulator with Shutdown

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