UC1843A

現行

電流模式 PWM 控制器

立即訂購

產品規格表

document-pdfAcrobat UCx84xA Current-Mode PWM Controller datasheet (Rev. H) (英文) PDF | HTML

UC1843A

現行

產品規格表

立即訂購

產品詳細資料

Vin (max) (V)

25

Operating temperature range (°C)

-55 to 125

Control mode

Current

Topology

Boost, Flyback, Forward

Rating

Military

Features

Error amplifier, Fixed frequency, Multi-topology

Duty cycle (max) (%)

100

Vin (max) (V)

25

Operating temperature range (°C)

-55 to 125

Control mode

Current

Topology

Boost, Flyback, Forward

Rating

Military

Features

Error amplifier, Fixed frequency, Multi-topology

Duty cycle (max) (%)

100

CDIP (JG)

8

64.032 mm² 9.6 x 6.67

LCCC (FK)

20

79.0321 mm² 8.89 x 8.89

Optimized for Off-Line and DC-DC Converters
Low Start-Up Current (< 0.5mA)
Trimmed Oscillator Discharge Current
Automatic Feedforward Compensation
Pulse-by-Pulse Current Limiting
Enhanced Load Response Characteristics
Undervoltage Lockout With Hysteresis
Double Pulse Suppression
High-Current Totem Pole Output
Internally-Trimmed Bandgap Reference
Up to 500kHz Operation
Create a Custom Design Using the UCx84xA With the WEBENCH Power Designer

Optimized for Off-Line and DC-DC Converters
Low Start-Up Current (< 0.5mA)
Trimmed Oscillator Discharge Current
Automatic Feedforward Compensation
Pulse-by-Pulse Current Limiting
Enhanced Load Response Characteristics
Undervoltage Lockout With Hysteresis
Double Pulse Suppression
High-Current Totem Pole Output
Internally-Trimmed Bandgap Reference
Up to 500kHz Operation
Create a Custom Design Using the UCx84xA With the WEBENCH Power Designer

The UCx84xA family of control devices is a pin-for-pin compatible improved version of the UCx84x family. Providing the necessary features to control current-mode or switched-mode power supplies, this family of devices has many improved features: startup current is less than 0.5mA, oscillator discharge is trimmed to 8.3mA, and during UVLO, the output stage can sink at least 10mA at less than 1.2V for VCC over 5V.

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尋找其它 AC/DC 和 DC/DC 控制器 (外部 FET)

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	類型	標題		日期
*	Data sheet	UCx84xA Current-Mode PWM Controller datasheet (Rev. H)	PDF \| HTML	2024年 10月 11日
*	SMD	UC1843A SMD 5962-86704		2016年 6月 21日
	Application note	UCC38C42 Family of High-Speed BiCMOS Current-Mode PWM Controllers		2002年 2月 7日
	Application note	DN-26 UC3842A Low-Cost Start-up and Fault Protection Circuit		1999年 9月 5日
	Application note	DN-27 UC1842/UC1842A Family - Summary of Functional Differences		1999年 9月 5日
	Application note	DN-29 UC3842A Family - Frequency Foldback Technique Provides Protection		1999年 9月 5日
	Application note	DN-30 Programmable Electronic Circuit Breaker		1999年 9月 5日
	Application note	DN-40 The Effects of Oscillator Discharge Current Variations on Maximum Duty		1999年 9月 5日
	Application note	DN-62 Switching Power Supply Topology Voltage Mode vs. Current Mode		1999年 9月 5日
	Application note	DN-65 Considerations in Powering BiCMOS ICs		1999年 9月 5日
	Application note	DN-89 Comparing the UC3842, UCC3802, and UCC3809 Primary Side PWM Controllers		1999年 9月 5日
	Application note	Modeling, Analysis and Compensation of the Current-Mode Converter		1999年 9月 5日
	Application note	U-100A UC3842/3/4/5 Provides Low-Cost Current-Mode Control		1999年 9月 5日
	Application note	U-111, Practical Considerations in Current Mode Power Supplies		1999年 9月 5日