Datasheet > UC2843ADR2

UC2843ADR2

更新时间： 2024-11-22 23:38:55

品牌	Logo	应用领域
其他 - ETC		开关光电二极管控制器
页数	文件大小	规格书
20页	296K
描述
High Performance Current Mode Controllers(292.77 k )

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UC2843ADR2 数据手册

UC3842A, UC3843A,

UC2842A, UC2843A

High Performance

Current Mode Controllers

The UC3842A, UC3843A series of high performance fixed

frequency current mode controllers are specifically designed for

off–line and dc–to–dc converter applications offering the designer a

cost effective solution with minimal external components. These

integrated circuits feature a trimmed oscillator for precise duty cycle

control, a temperature compensated reference, high gain error

amplifier, current sensing comparator, and a high current totem pole

output ideally suited for driving a power MOSFET.

http://onsemi.com

PDIP–8

N SUFFIX

CASE 626

Also included are protective features consisting of input and

reference undervoltage lockouts each with hysteresis, cycle–by–cycle

current limiting, programmable output deadtime, and a latch for single

pulse metering.

SO–14

D SUFFIX

CASE 751A

These devices are available in an 8–pin dual–in–line plastic package

as well as the 14–pin plastic surface mount (SO–14). The SO–14

package has separate power and ground pins for the totem pole output

stage.

The UCX842A has UYLO thresholds of 16 V (on) and 10 V (off),

ideally suited for off–line converters. The UCX843A is tailored for

lower voltage applications having UVLO thresholds of 8.5 V (on) and

7.6 V (off).

SO–8

D1 SUFFIX

CASE 751

• Trimmed Oscillator Discharge Current for Precise Duty Cycle

Control

PIN CONNECTIONS

• Current Mode Operation to 500 kHz

• Automatic Feed Forward Compensation

• Latching PWM for Cycle–By–Cycle Current Limiting

• Internally Trimmed Reference with Undervoltage Lockout

• High Current Totem Pole Output

Compensation

Voltage Feedback

Current Sense

ref

Output

Gnd

R /C

(Top View)

• Undervoltage Lockout with Hysteresis

• Low Startup and Operating Current

• Direct Interface with ON Semiconductor SENSEFET Products

Compensation

ref

Voltage Feedback

Current Sense

Output

Gnd

R /C

Power Ground

(Top View)

ORDERING INFORMATION

See detailed ordering and shipping information in the package

dimensions section on page 15 of this data sheet.

DEVICE MARKING INFORMATION

See general marking information in the device marking

section on page 16 of this data sheet.

Semiconductor Components Industries, LLC, 2001

Publication Order Number:

October, 2001 – Rev. 3

UC3842A/D

12 3 4 5 6 7...20

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与UC2843ADR2相关器件

型号	品牌	获取价格	描述	数据表
UC2843ADR2G	ONSEMI	获取价格	IC 1 A SWITCHING CONTROLLER, 500 kHz SWITCHING FREQ-MAX, PDSO14, LEAD FREE, PLASTIC, SOIC-
UC2843ADT	ETC	获取价格	Current-Mode SMPS Controller
UC2843ADTR	TI	获取价格	Current Mode PWM Controller
UC2843AD-TR	MICROSEMI	获取价格	Switching Controller, Current-mode, 1A, 500kHz Switching Freq-Max, BIPolar, PDSO14, ROHS C
UC2843ADTRG4	TI	获取价格	Current Mode PWM Controller
UC2843ADW	TI	获取价格	Current Mode PWM Controller
UC2843ADWG4	TI	获取价格	1A SWITCHING CONTROLLER, 500kHz SWITCHING FREQ-MAX, PDSO16, GREEN, PLASTIC, SOIC-16
UC2843ADWTR	TI	获取价格	Current Mode PWM Controller
UC2843ADWTRG4	TI	获取价格	1A SWITCHING CONTROLLER, 500kHz SWITCHING FREQ-MAX, PDSO16, GREEN, PLASTIC, SOIC-16
UC2843AJ	TI	获取价格	Current Mode PWM Controller

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