UC3842A

활성

16V/10V UVLO 100% 듀티 사이클, 0C~70C의 30V, 1A, 500KHz 전류 모드 PWM 컨트롤러

지금 주문

데이터시트

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

UC3842A

활성

데이터시트

지금 주문

제품 상세 정보

Vin (max) (V)

28

Operating temperature range (°C)

0 to 70

Control mode

Peak current mode

Topology

Boost, Buck, Buck boost, Flyback, Forward

Rating

Catalog

Duty cycle (max) (%)

100

Vin (max) (V)

28

Operating temperature range (°C)

0 to 70

Control mode

Peak current mode

Topology

Boost, Buck, Buck boost, Flyback, Forward

Rating

Catalog

Duty cycle (max) (%)

100

PDIP (P)

8

92.5083 mm² 9.81 x 9.43

SOIC (D)

8

29.4 mm² 4.9 x 6

SOIC (D)

14

51.9 mm² 8.65 x 6

SOIC (DW)

16

106.09 mm² 10.3 x 10.3

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.

open-in-new

기타 AC/DC & DC/DC controllers (external FET) 찾기

다운로드 스크립트와 함께 비디오 보기 동영상

관심 가지실만한 유사 제품

open-in-new

대안 비교

비교 대상 장치보다 업그레이드된 기능을 지원하는 즉각적 대체품

TL2842B

활성

16V/10V UVLO, 100% 듀티 사이클, -40C~85C를 지원하는 30V, 0.2A 고성능 500KHz 전류 모드 PWM Wider temperature range

비교 대상 장치와 동일한 기능을 지원하는 핀 대 핀

UCC28C58

활성

산업용, 30V, 저전력 전류 모드 PWM 컨트롤러, SiC용 16V/12.5V UVLO, 100% 듀티 사이클 Lower startup and supply current, better reference voltage accuracy and faster overcurrent protection

UCC38C42

활성

상업용, 20V, 저전력 전류 모드 PWM 컨트롤러, 14.5V/9V UVLO, 100% 듀티 사이클 Pin-to-pin equivalent with BiCMOS low-power consumption

기술 문서

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=TI에서 선정한 이 제품의 인기 문서

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모두 보기13

	유형	직함		날짜
*	Data sheet	UCx84xA Current-Mode PWM Controller datasheet (Rev. G)	PDF \| HTML	2022/07/12
	Application note	Conditioning a Switch-mode Power Supply Current Signal Using TI Op Amps (Rev. A)	PDF \| HTML	2021/06/11
	Application note	Understanding Inverting Buck-Boost Power Stages in Switch Mode Power Supplies (Rev. B)		2019/03/12
	Selection guide	Power Management Guide 2018 (Rev. R)		2018/06/25
	Application note	UCC38C42 Family of High-Speed BiCMOS Current-Mode PWM Controllers		2002/02/07
	Application note	DN-26 UC3842A Low-Cost Start-up and Fault Protection Circuit		1999/09/05
	Application note	DN-27 UC1842/UC1842A Family - Summary of Functional Differences		1999/09/05
	Application note	DN-29 UC3842A Family - Frequency Foldback Technique Provides Protection		1999/09/05
	Application note	DN-30 Programmable Electronic Circuit Breaker		1999/09/05
	Application note	DN-40 The Effects of Oscillator Discharge Current Variations on Maximum Duty		1999/09/05
	Application note	DN-42A Design Considerations for Transitioning from UC3842 to the New UCC3802		1999/09/05
	Application note	DN-62 Switching Power Supply Topology Voltage Mode vs. Current Mode		1999/09/05
	Application note	U-111, Practical Considerations in Current Mode Power Supplies		1999/09/05