Datasheet > UC2845

UC2845

更新时间： 2024-11-23 08:26:27

品牌	Logo	应用领域
友顺 - UTC		控制器
页数	文件大小	规格书
7页	290K
描述
HIGH PERFORMANCE CURRENT MODE PWM CONTROLLERS

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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 maximum

duty cycle ranges and 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

8.5V_(ON)and 7.6V_(OFF)for lower voltage applications.

*Pb-free plating product number:

UC2844L/UC2845L

FEATURES

* Operation output switching frequency up to 500 kHz

* Output deadtime adjustable from 50% to 70%

* 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

Order Number

Package

Packing

Lead Free

Halogen Free

UC2844L-S08-R

UC2845L-S08-R

UC2844G-S08-R

UC2845G-S08-R

SOP-8

Tape Reel

www.unisonic.com.tw

1 of 7

QW-R103-051.A

12 3 4 5 6 7

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