Datasheet > LT1243CJ8

LT1243CJ8

更新时间： 2024-01-01 12:17:58

品牌	Logo	应用领域
凌特 - Linear		开关
页数	文件大小	规格书
16页	280K
描述
IC 1 A SWITCHING CONTROLLER, 500 kHz SWITCHING FREQ-MAX, CDIP8, 0.300 INCH, HERMETIC SEALED, CERDIP-8, Switching Regulator or Controller

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LT1243CJ8 技术参数

是否Rohs认证：	符合	生命周期：	Active
包装说明：	DIP, DIP8,.3	Reach Compliance Code：	compliant
风险等级：	5.61	控制模式：	CURRENT-MODE
JESD-30 代码：	R-XDIP-T8	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：	CERAMIC
封装代码：	DIP	封装等效代码：	DIP8,.3
封装形状：	RECTANGULAR	封装形式：	IN-LINE
认证状态：	Not Qualified	子类别：	Switching Regulator or Controllers
表面贴装：	NO	最大切换频率：	500 kHz
技术：	BIPOLAR	温度等级：	COMMERCIAL
端子形式：	THROUGH-HOLE	端子节距：	2.54 mm
端子位置：	DUAL	Base Number Matches：	1

LT1243CJ8 数据手册

LT1241 Series

High Speed Current Mode

Pulse Width Modulators

DESCRIPTIO

EATURE

Low Start-Up Current: < 250µA

50ns Current Sense Delay

Current Mode Operation: To 500kHz

Pin Compatible with UC1842 Series

Undervoltage Lockout with Hysteresis

No Cross-Conduction Current

The LT^®1241 series devices are 8-pin, fixed frequency,

currentmode,pulsewidthmodulators.Theyareimproved

plugcompatibleversionsoftheindustrystandardUC1842

series. These devices have both improved speed and

lower quiescent current. The LT1241 series is optimized

for off-line and DC/DC converter applications. They con-

tain a temperature-compensated reference, high gain er-

ror amplifier, current sensing comparator and a high

current totem pole output stage ideally suited to driving

power MOSFETs. Start-up current has been reduced to

less than 250µA. Cross-conduction current spikes in

the output stage have been eliminated, making 500kHz

operation practical. Several new features have been incor-

porated. Leading edge blanking has been added to the

current sense comparator. Trims have been added to the

oscillator circuit for both frequency and sink current, and

both of these parameters are tightly specified. The output

stage is clamped to a maximum V_OUTof 18V in the

on state. The output and the reference output are actively

pulled low during undervoltage lockout.

■

Trimmed Bandgap Reference

1A Totem Pole Output

Trimmed Oscillator Frequency and Sink Current

Active Pull-Down on Reference and Output During

Undervoltage Lockout

■

High Level Output Clamp: 18V

^{Current Sense Le}O ^adU ^{ing Edge Blanking}

PPLICATI

■

Off-Line Converters

DC/DC Converters

■

, LTC and LT are registered trademarks of Linear Technology Corporation.

BLOCK DIAGRA

LOCKOUT

REFERENCE ENABLE

REFERENCE PULL-DOWN

5V REF

MAIN BIAS

REF

OUTPUT

PULL-DOWN

OSCILLATOR

R /C

OUTPUT

GND

5.6V

COMP

1mA

–

BLANKING

1.5V

–

2.5V

18V

SENSE

–

1241 BD01

12 3 4 5 6 7...16

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与LT1243CJ8相关器件

型号	品牌	描述	获取价格	数据表
LT1243CJ8#PBF	Linear	IC,SMPS CONTROLLER,CURRENT-MODE,BIPOLAR,DIP,8PIN,CERAMIC	获取价格
LT1243CN8	Linear	LT1243 - High Speed Current Mode Pulse Width Modulators; Package: PDIP; Pins: 8; Temperatu	获取价格
LT1243CN8#PBF	Linear	LT1243 - High Speed Current Mode Pulse Width Modulators; Package: PDIP; Pins: 8; Temperatu	获取价格
LT1243CS8	Linear	暂无描述	获取价格
LT1243CS8#PBF	Linear	LT1243 - High Speed Current Mode Pulse Width Modulators; Package: SO; Pins: 8; Temperature	获取价格
LT1243CS8#TR	Linear	LT1243 - High Speed Current Mode Pulse Width Modulators; Package: SO; Pins: 8; Temperature	获取价格

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