Datasheet > LM3842A_08

LM3842A_08

更新时间： 2024-11-08 11:35:11

品牌	Logo	应用领域
韩国泰进 - HTC		控制器
页数	文件大小	规格书
6页	116K
描述
CURRENT MODE PWM CONTROLLER

阅读下载

中文翻译

获取价格

数据手册

如果您发现信息不准确，欢迎纠错

LM3842A_08 数据手册

CURRENT MODE PWM CONTROLLER

LM3842A/3A/4A/5A

FEATURES

8 SOP/ 8 DIP PIN Configulation

Compen

sation

V_REF

Vcc

● Automatic feed forward compensation

● Optimized for offline converter

Voltage

SOP-8 PKG

DIP-8 PKG

● Double pulse suppression

Feedback

● Current mode operation to 500 KHz

● High gain totem pole output

Current

Sense

OUTPUT

GND

● Internally trimmed bandgap reference

● Undervoltage lockout with hysteresis

● Low start up current :＜ 0.3 mA

● Moisture Sensitivity Level 3

R_T/C_T

ORDERING INFORMATION

Device

Package

8 SOP

8 DIP

LM3842A/3A/4A/5A D

LM3842A/3A/4A/5A N

DESCRIPTION

The LM384xA are fixed frequency current-mode PWM controller. They are specially designed for Off-Line and

DC-to-DC converter applications with minimal external components.

These integrated circuits features a trimmed oscillator for precise duty cycle control, a temperature

compensated reference, high gain error amplifier, current sensing comparator, and a high current

totempole output ideally suited for driving a power MOSFET.

Protection circuitry includes built in under-voltage lockout and current limiting.

SIMPLIFIED BLOCK DIAGRAM

Vcc

Undervoltage

V_REF

⑧

Reference

Lockout

V_REF

Undervoltage

Lockout

⑦ Vcc

Oscillator

RT/CT ④

VFB ②

⑥ Output

⑤ Ground

Latching

PWM

Error

Amplifie

③ Current

Sense

Input

COMP ①

ABSOLUTE MAXIMUM RATINGS (T_A= 25℃)

Characteristic

Power Supply Voltage

Output Current

Symbol

Value

Unit

V_cc

I_o

± 1

V_IN

I_SINK

P_D

Analog Inputes Voltage

Error Amp Output Sink Current

-0.3 to 5.5V

Power Dissipation

℃

Storage Temperature Range

Lead Temperature (soldering 5 sec)

Tstg

T^L

-65 to 150

260

2008 - Ver. 1.0

HTC

− 1 −

12 3 4 5 6

中文翻译

下载PDF

与LM3842A_08相关器件

型号	品牌	获取价格	描述	数据表
LM3842AD	HTC	获取价格	CURRENT MODE PWM CONTROLLER
LM3842AN	HTC	获取价格	CURRENT MODE PWM CONTROLLER
LM3843A	HTC	获取价格	CURRENT MODE PWM CONTROLLER
LM3843AD	HTC	获取价格	CURRENT MODE PWM CONTROLLER
LM3843AN	HTC	获取价格	CURRENT MODE PWM CONTROLLER
LM3844A	HTC	获取价格	CURRENT MODE PWM CONTROLLER
LM3844AD	HTC	获取价格	CURRENT MODE PWM CONTROLLER
LM3844AN	HTC	获取价格	CURRENT MODE PWM CONTROLLER
LM3845A	HTC	获取价格	CURRENT MODE PWM CONTROLLER
LM3845AD	HTC	获取价格	CURRENT MODE PWM CONTROLLER