UC1842A

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. G) (英文) PDF | HTML

UC1842A

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

Duty cycle (max) (%)

100

Vin (max) (V)

25

Operating temperature range (°C)

-55 to 125

Control mode

Current

Topology

Boost, Flyback, Forward

Rating

Military

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 (< 0.5 mA)
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 500-kHz 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 (< 0.5 mA)
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 500-kHz 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 0.5 mA, oscillator discharge is trimmed to 8.3 mA, and during UVLO, the output stage can sink at least 10 mA at less than 1.2 V for V_CC over 5 V.

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	類型	標題		日期
*	Data sheet	UCx84xA Current-Mode PWM Controller datasheet (Rev. G)	PDF \| HTML	2022年 7月 12日
*	SMD	UC1842A SMD 5962-86704		2016年 6月 21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-42A Design Considerations for Transitioning from UC3842 to the New UCC3802		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