Datasheet > 电源电路 > 开关式稳压器或控制器> AP3845S8L

AP3845S8L

更新时间： 2024-11-21 04:06:23

品牌	Logo	应用领域
易亨 - ANACHIP		稳压器开关式稳压器或控制器电源电路开关式控制器光电二极管
页数	文件大小	规格书
8页	216K
描述
High Performance Current Mode PWM Controller

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中文翻译

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技术参数
数据手册

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AP3845S8L 技术参数

是否Rohs认证：	符合	生命周期：	Transferred
包装说明：	SOP, SOP8,.25	Reach Compliance Code：	unknown
风险等级：	5.75	Is Samacsys：	N
控制模式：	CURRENT-MODE	JESD-30 代码：	R-PDSO-G8
端子数量：	8	最高工作温度：	70 °C
最低工作温度：		最大输出电流：	0.2 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：	500 kHz	温度等级：	COMMERCIAL
端子形式：	GULL WING	端子节距：	1.27 mm
端子位置：	DUAL	Base Number Matches：	1

AP3845S8L 数据手册

AP3842/3/4/5

High Performance Current Mode PWM Controller

Features

General Description

• Optimized for Off-Line and DC to DC Converters

• Low Start-Up Current (≦0.5mA)

The AP3842/3/4/5 family of control ICs provides the

necessary features to implement off-line or DC to

DC fixed frequency current mode control schemes

with a minimal external parts count. Internally

implemented circuits include under voltage lockout

featuring start-up current less than 0.5 mA, a

precision reference trimmed for accuracy at the

error amp input, logic to insure latched operation, a

PWM comparator which also provides current limit

control, and a totem pole output stage designed to

source or sink high peak current. The output stage,

suitable for driving N-Channel MOSFETs, is low in

the off-state.

• Automatic Feed Forward Compensation

• Pulse-by-Pulse Current Limiting

• Enhanced Load Response Characteristics

• Under-Voltage Lockout (UVLO) with Hysteresis

• Double Pulse Suppression

• High Current Totem Pole Output

• Internally Trimmed Bandgap Reference

• Current Mode Operation to 500KHZ

• Low Ro Error Amplifier

Pin Connections

PDIP-8L, SOP-8L

Top View

Differences between members of this family are the

under-voltage lockout thresholds and maximum

duty cycle ranges. The AP3842 and AP3844 have

UVLO thresholds of 16V(on) and 10V(off), ideally

suited for off-line applications. The corresponding

thresholds for the AP3843 and AP3845 are 8.5V

and 7.6V. The AP3842 and AP3843 can operate to

duty cycles approaching 100%. A range of the zero

to < 50% is obtained by the AP3844 and AP3845

by the addition of an internal toggle flip flop which

blanks the output off every other clock cycle.

COMP.

V_FB

V_REF

V_I

I_SENSE

R_T/C_T

OUTPUT

GROUND

Ordering Information

AP 384X X X X

Part No.

Package

Packing

Lead Free

2:3842

3:3843

4:3844

5:3845

S8:SOP-8L

N8:PDIP-8L

Blank : Normal

Blank: Tube

L : Lead Free Package

A : Taping

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.1.0 Oct.11, 2004

1/8

12 3 4 5 6 7 8

中文翻译

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与AP3845S8L相关器件

型号	品牌	获取价格	描述	数据表
AP3845S8LA	ANACHIP	获取价格	High Performance Current Mode PWM Controller
AP3845S8LA	ICT	获取价格	Switching Regulator, Current-mode, 0.7A, 500kHz Switching Freq-Max, PDSO8, LEAD FREE, SOP-
AP384XC	BCDSEMI	获取价格	CURRENT MODE PWM CONTROLLER
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AP384XG	ANALOGICTECH	获取价格	GREEN MODE PWM CONTROLLER
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AP3861	DIODES	获取价格

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