Datasheet > UC1872J

UC1872J

更新时间： 2024-11-14 20:47:03

品牌	Logo	应用领域
德州仪器 - TI		/
页数	文件大小	规格书
7页	188K
描述
IC,POWER FACTOR CONTROLLER,BIPOLAR,DIP,14PIN

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中文翻译

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技术参数
数据手册

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UC1872J 技术参数

是否Rohs认证：	不符合	生命周期：	Obsolete
包装说明：	DIP, DIP14,.3	Reach Compliance Code：	not_compliant
风险等级：	5.92	JESD-30 代码：	R-XDIP-T14
端子数量：	14	最高工作温度：	125 °C
最低工作温度：	-55 °C	封装主体材料：	CERAMIC
封装代码：	DIP	封装等效代码：	DIP14,.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	技术：	BIPOLAR
温度等级：	MILITARY	端子形式：	THROUGH-HOLE
端子节距：	2.54 mm	端子位置：	DUAL
Base Number Matches：	1

UC1872J 数据手册

application

INFO

UC1872

UC2872

UC3872

available

Resonant Lamp Ballast Controller

FEATURES

DESCRIPTION

• Controls Different Types of Lamps:

Cold Cathode Fluorescent, Neon, and

Gas Discharge

The UC3872 is a resonant lamp ballast controller optimized for driving

cold cathode fluorescent, neon, and other gas discharge lamps. The res-

onant power stage develops a sinusoidal lamp drive voltage, and mini-

mizes switching loss and EMI generation. Lamp intensity adjustment is

accomplished with a buck regulator, which is synchronized to the external

power stage’s resonant frequency. Suitable for automotive and battery

powered applications, the UC3872 draws only 1µA when disabled.

• Zero Voltage Switching (ZVS) of

Push-Pull Drivers

• Accurate Control of Lamp Current

• Variable Lamp Intensity Control

• 1µA Disable Current

Soft start and open lamp detect circuitry have been incorporated to mini-

mize component stresses. Open lamp detection is enabled at the comple-

tion of a soft start cycle. The chip is optimized for smooth duty cycle

control to 100%.

• 4.5V to 24V Operation

Other features include a precision 1.2% reference, undervoltage lockout,

and accurate minimum and maximum frequency control.

• Open Lamp Detection Circuitry

BLOCK DIAGRAM

3.0V

REF

AOUT

VCC 10

UVLO

50k

REF

(HIGH=ENABLE)

PUSH PULL

OUTPUTS

ENBL 11

N-CHANNEL

0.1V

–

COMP

INV

TOGGLE

OPEN

LAMP

DETECT

–

BOUT

20µA

50k

1.5V

PWM

–

200µA

0.2V

OSCILLATOR

SENSE

OUT

12 COUT

ZERO DETECT

BUCK DRIVE

P-CHANNEL

–

SYNC

0.5V

13 PGND

GND

UDG-99112

Note: Pin numbers shown are for DIP package.

07/99

12 3 4 5 6 7

中文翻译

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与UC1872J相关器件

型号	品牌	获取价格	描述	数据表
UC1872M	TI	获取价格	IC FLUORESCENT LIGHT CONTROLLER, PDSO16, SSOP-16, Switching Regulator or Controller
UC1872Q	TI	获取价格	FLUORESCENT LIGHT CONTROLLER, 200kHz SWITCHING FREQ-MAX, PQCC20
UC1874	TI	获取价格	High Efficiency, Synchronous, Step-down (Buck) Controllers
UC1874-1	TI	获取价格	High Efficiency, Synchronous, Step-down (Buck) Controllers
UC1874-2	TI	获取价格	High Efficiency, Synchronous, Step-down (Buck) Controllers
UC1874DW-1	TI	获取价格	High Efficiency, Synchronous, Step-down Buck Controllers
UC1874DW-2	TI	获取价格	High Efficiency, Synchronous, Step-down Buck Controllers
UC1874DWTR-1	ETC	获取价格	Analog IC
UC1874DWTR-2	ETC	获取价格	Analog IC
UC1874J-1	TI	获取价格	High Efficiency, Synchronous, Step-down Buck Controllers

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