AP3842S8

更新时间： 2024-11-18 04:06:23

品牌	Logo	应用领域
易亨 - ANACHIP		开关光电二极管控制器
页数	文件大小	规格书
8页	216K
描述
High Performance Current Mode PWM Controller

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技术参数
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AP3842S8 技术参数

是否Rohs认证：	不符合	生命周期：	Transferred
包装说明：	SOP, SOP8,.25	Reach Compliance Code：	unknown
风险等级：	5.84	控制模式：	CURRENT-MODE
JESD-30 代码：	R-PDSO-G8	JESD-609代码：	e0
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
端子面层：	Tin/Lead (Sn/Pb)	端子形式：	GULL WING
端子节距：	1.27 mm	端子位置：	DUAL
Base Number Matches：	1

AP3842S8 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AP3842S8相关器件

型号	品牌	获取价格	描述	数据表
AP3842S8A	ANACHIP	获取价格	High Performance Current Mode PWM Controller
AP3842S8A	ICT	获取价格	Switching Regulator, Current-mode, 0.7A, 500kHz Switching Freq-Max, PDSO8, SOP-8
AP3842S8L	ANACHIP	获取价格	High Performance Current Mode PWM Controller
AP3842S8LA	ICT	获取价格	Switching Regulator, Current-mode, 0.7A, 500kHz Switching Freq-Max, PDSO8, LEAD FREE, SOP-
AP3842S8LA	ANACHIP	获取价格	High Performance Current Mode PWM Controller
AP3843	ANACHIP	获取价格	High Performance Current Mode PWM Controller
AP3843CM	BCDSEMI	获取价格	CURRENT MODE PWM CONTROLLER
AP3843CM-E1	BCDSEMI	获取价格	CURRENT MODE PWM CONTROLLER
AP3843CM-E1	DIODES	获取价格	CURRENT MODE PWM CONTROLLER
AP3843CM-G1	DIODES	获取价格	Switching Controller, Current-mode, 1A, 500kHz Switching Freq-Max, PDSO8, GREEN, SOIC-8

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