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UC1844 UC1845

更新时间： 2024-11-05 14:55:19

品牌	Logo	应用领域
友顺 - UTC		/
页数	文件大小	规格书
7页	463K
描述
high performance current mode pwm controllers

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UC1844 UC1845 数据手册

UNISONIC TECHNOLOGIES CO., LTD

UC1844/45

LINEAR INTEGRATED CIRCUIT

HIGH PERFORMANCE

CURRENT MODE PWM

CONTROLLERS



DESCRIPTION

The UTC UC1844/1845 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 UC1844 and UC1845 are the

under-voltage lockout thresholds. The UC1844 ideally suited to

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

and UC1845 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

UC1844G-D08-T

UC1844G-S08-R

UC1845G-D08-T

UC1845G-S08-R

UC1844L-D08-T

DIP-8

SOP-8

DIP-8

Tube

Tape Reel

Tube

UC1844L-S08-R

UC1845L-D08-T

UC1845L-S08-R

SOP-8

Tape Reel

www.unisonic.com.tw

1 of 7

QW-R103-196.A

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