Datasheet > UC2844 UC2845

UC2844 UC2845

更新时间： 2023-12-06 20:09:29

品牌	Logo	应用领域
友顺 - UTC		/
页数	文件大小	规格书
7页	436K
描述
PWM Controllers with Low Start-Up Current

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UC2844 UC2845 数据手册

UNISONIC TECHNOLOGIES CO., LTD

UC2844/45

LINEAR INTEGRATED CIRCUIT

HIGH PERFORMANCE

CURRENT MODE PWM

CONTROLLERS



DESCRIPTION

The UTC UC2844/2845 are high performance fixed frequency

current mode controllers that specifically designed for Off-Line and

DC to DC converter applications with minimal external parts count.

The differences between UC2844 and UC2845 are the

under-voltage lockout thresholds. The UC2844 ideally suited to

off-line applications with UVLO thresholds of 16V_(ON)and 10V_(OFF)

and UC2845 has UVLO thresholds of 8.4V_(ON)and 7.6V_(OFF)for

lower voltage applications.



FEATURES

* Operation output switching frequency up to 500 kHz

* Automatic feed forward compensation

* Latching PWM for cycle-by-cycle current limiting

* High current totem pole output

* Internally trimmed reference with under voltage lockout

* UVLO with hysteresis

* Low startup and operating current



ORDERING INFORMATION

Ordering Number

Lead Free

Package

Packing

Halogen Free

UC2844G-D08-T

UC2844G-S08-R

UC2845G-D08-T

UC2845G-S08-R

UC2844L-D08-T

DIP-8

SOP-8

DIP-8

Tube

Tape Reel

Tube

UC2844L-S08-R

UC2845L-D08-T

UC2845L-S08-R

SOP-8

Tape Reel

www.unisonic.com.tw

1 of 7

QW-R103-051.L

12 3 4 5 6 7

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