UCC38C41

Name: UCC38C41
Brand: TI
SKU: UCC38C41
Price: 0.24 USD

現行

商用 20-V 低功耗電流模式 PWM 控制器、7-V/6.6-V UVLO、50% 工作週期

立即訂購

產品規格表

document-pdfAcrobat UCCx8C4x BiCMOS Low-Power Current-Mode PWM Controller datasheet (Rev. I) (英文) PDF | HTML

UCC38C41

現行

產品規格表

立即訂購

產品詳細資料

Vin (max) (V)

18

Operating temperature range (°C)

0 to 85

Control mode

Current

Topology

Boost, Buck, Flyback, Forward, SEPIC

Rating

Catalog

Features

Adjustable switching frequency, Current limiting, Dead time control, Error amplifier, Fixed frequency, Multi-topology, Programmable max duty cycle

Duty cycle (max) (%)

50

Vin (max) (V)

18

Operating temperature range (°C)

0 to 85

Control mode

Current

Topology

Boost, Buck, Flyback, Forward, SEPIC

Rating

Catalog

Features

Adjustable switching frequency, Current limiting, Dead time control, Error amplifier, Fixed frequency, Multi-topology, Programmable max duty cycle

Duty cycle (max) (%)

50

SOIC (D)

8

29.4 mm² 4.9 x 6

VSSOP (DGK)

8

14.7 mm² 3 x 4.9

Enhanced replacement for UCx84x and UCx84xA family with pin-to-pin compatibility
Operating frequency: 1MHz Maximum
50µA Startup Current, 100µA Maximum
Low operating current: 2.3mA (at fOSC = 52kHz)
Fast, cycle-by-cycle overcurrent limiting: 35ns
Peak driving current: ±1A. Rail-to-rail output:
- 25ns rise time
- 20ns fall time
±1% accurate 2.5V error amplifier reference
Trimmed oscillator discharge current
Undervoltage lockout protections
VSSOP-8 package minimizes board space

Enhanced replacement for UCx84x and UCx84xA family with pin-to-pin compatibility
Operating frequency: 1MHz Maximum
50µA Startup Current, 100µA Maximum
Low operating current: 2.3mA (at fOSC = 52kHz)
Fast, cycle-by-cycle overcurrent limiting: 35ns
Peak driving current: ±1A. Rail-to-rail output:
- 25ns rise time
- 20ns fall time
±1% accurate 2.5V error amplifier reference
Trimmed oscillator discharge current
Undervoltage lockout protections
VSSOP-8 package minimizes board space

The UCCx8C4x family are high-performance, current-mode PWM controllers. The UCCx8C4x is an enhanced BiCMOS version with pin-for-pin compatibility to the industry standard UCx84xA family and UCx84x family of PWM controllers. The BiCMOS technology offers lower power consumption to improve efficiency as well as faster current sense and oscillator frequency.

In addition, lower startup voltage versions of 7V are offered as UCCx8C40 and UCCx8C41 for use in battery systems. The UCC28C4x series is specified for operation from –40°C to 125°C, and the UCC38C4x series is specified for operation from 0°C to 85°C.

Providing necessary features to control fixed frequency, peak current-mode power supplies, this family offers the following performance advantages. The device offers high-frequency operation up to 1MHz, suitable for high speed applications. The trimmed discharge current enables more precise programming of the maximum duty cycle and dead-time limit when compared to the UCCx8C4x family. Reduced start-up and operating currents minimizes start-up loss and low operating power consumption for improved efficiency. The device also features a fast current-sense-to-output delay time of 35ns for superior overload protection at the power switch, and a ±1A peak output current capability with improved rise and fall times for driving large external MOSFETs directly.

The UCCx8C4x family is offered in 8-pin VSSOP (DGK) and 8-pin SOIC (D) packages.

The UCCx8C4x family are high-performance, current-mode PWM controllers. The UCCx8C4x is an enhanced BiCMOS version with pin-for-pin compatibility to the industry standard UCx84xA family and UCx84x family of PWM controllers. The BiCMOS technology offers lower power consumption to improve efficiency as well as faster current sense and oscillator frequency.

In addition, lower startup voltage versions of 7V are offered as UCCx8C40 and UCCx8C41 for use in battery systems. The UCC28C4x series is specified for operation from –40°C to 125°C, and the UCC38C4x series is specified for operation from 0°C to 85°C.

Providing necessary features to control fixed frequency, peak current-mode power supplies, this family offers the following performance advantages. The device offers high-frequency operation up to 1MHz, suitable for high speed applications. The trimmed discharge current enables more precise programming of the maximum duty cycle and dead-time limit when compared to the UCCx8C4x family. Reduced start-up and operating currents minimizes start-up loss and low operating power consumption for improved efficiency. The device also features a fast current-sense-to-output delay time of 35ns for superior overload protection at the power switch, and a ±1A peak output current capability with improved rise and fall times for driving large external MOSFETs directly.

The UCCx8C4x family is offered in 8-pin VSSOP (DGK) and 8-pin SOIC (D) packages.

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UCC28C41

現行

工業用 20-V、低功耗電流模式 PWM 控制器、7-V/6.6-V UVLO、50% 工作週期 Wider temperature range

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	類型	標題		日期
*	Data sheet	UCCx8C4x BiCMOS Low-Power Current-Mode PWM Controller datasheet (Rev. I)	PDF \| HTML	2024年 6月 13日
	Functional safety information	UCCx8C4x Functional Safety, FIT Rate, Failure Mode Distribution and Pin FMA	PDF \| HTML	2022年 9月 12日
	Application note	Conditioning a Switch-mode Power Supply Current Signal Using TI Op Amps (Rev. A)	PDF \| HTML	2021年 6月 11日
	Application note	Understanding Inverting Buck-Boost Power Stages in Switch Mode Power Supplies (Rev. B)		2019年 3月 12日
	Selection guide	Power Management Guide 2018 (Rev. R)		2018年 6月 25日
	Application note	UCC38C44 12-V Isolated Bias Supply (Rev. A)		2008年 10月 9日
	User guide	UCC38C42 30-W Synchronous Buck Converter Reference Design		2003年 2月 4日
	Application note	UCC38C42 25-W Forward Converter		2002年 9月 6日
	Application note	UCC38C42 Family of High-Speed BiCMOS Current-Mode PWM Controllers		2002年 2月 7日
	More literature	Seminar 300 Topic 8 - Switching Power Supply Design Review		2001年 2月 15日
	More literature	Seminar 400 Topic 2 - Design of Flyback Transformers and Filter Inductors		2001年 2月 15日
	More literature	Seminar 900 Topic 6 - High Power Factor Prereg Using SEPIC		2001年 2月 15日
	Application note	DN-30 Programmable Electronic Circuit Breaker		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	U-111, Practical Considerations in Current Mode Power Supplies		1999年 9月 5日

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開發板

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使用指南: PDF | HTML