UC1842AL883B

更新时间： 2024-11-03 22:41:51

品牌	Logo	应用领域
德州仪器 - TI		控制器
页数	文件大小	规格书
11页	659K
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

UC1842AL883B 数据手册

application

INFO

UC1842A/3A/4A/5A

UC2842A/3A/4A/5A

UC3842A/3A/4A/5A

available

Current Mode PWM Controller

FEATURES

DESCRIPTION

•

Optimized for Off-line and DC to DC

The UC1842A/3A/4A/5A family of control ICs is a pin for pin compati-

ble improved version of the UC3842/3/4/5 family. Providing the nec-

essary features to control current mode switched mode power

supplies, this family has the following improved features. Start up cur-

rent is guaranteed to be less than 0.5mA. Oscillator discharge is

trimmed to 8.3mA. During under voltage lockout, the output stage

can sink at least 10mA at less than 1.2V for VCC over 5V.

Converters

•

Low Start Up Current (<0.5mA)

Trimmed Oscillator Discharge Current

Automatic Feed Forward Compensation

Pulse-by-Pulse Current Limiting

Enhanced Load Response Characteristics

Under-Voltage Lockout With Hysteresis

Double Pulse Suppression

The difference between members of this family are shown in the table

below.

Maximum Duty

Part #

UVLO On

UVLO Off

Cycle

<100%

<50%

High Current Totem Pole Output

Internally Trimmed Bandgap Reference

500kHz Operation

UC1842A

UC1843A

UC1844A

UC1845A

16.0V

8.5V

10.0V

7.9V

16.0V

8.5V

10.0V

7.9V

<50%

Low RO Error Amp

BLOCK DIAGRAM

A/B

Note 1:

A = DIL-8 Pin Number. B = SO-14 Pin Number.

Note 2: Toggle flip flop used only in 1844A and 1845A.

SLUS224A - SEPTEMBER 1994 - REVISED APRIL 2002

12 3 4 5 6 7...11

中文翻译

下载PDF

与UC1842AL883B相关器件

型号	品牌	获取价格	描述	数据表
UC1842ALQMLV	TI	获取价格	Current Mode PWM Controller
UC1842AMDREP	TI	获取价格	CURRENT-MODE PWM CONTROLLER
UC1842A-SP	TI	获取价格	QML CLASS V, CURRENT-MODE PWM CONTROLLERS
UC1842B UC1843B	UTC	获取价格	high performance current mode pwm controllers
UC1842D	ETC	获取价格	SMPS Controller
UC1842D8	ETC	获取价格	SMPS Controller
UC1842D8TR	ETC	获取价格	SMPS Controller
UC1842DTR	ETC	获取价格	SMPS Controller
UC1842J	TI	获取价格	Current Mode PWM Controller
UC1842J883B	TI	获取价格	Current Mode PWM Controller