UCC2808-2 低功耗电流模式推拉 PWM

UCC2808-2 描述

The UCC3808 is a family of BiCMOS push-pull, high-speed, low-power, pulse-width modulators. The UCC3808 contains all of the control and drive circuitry required for off-line or dc-to-dc fixed frequency current-mode switching power supplies with minimal external parts count.

The UCC3808 dual output drive stages are arranged in a push-pull configuration. Both outputs switch at half the oscillator frequency using a toggle flip-flop. The dead time between the two outputs is typically 60 ns to 200 ns depending on the values of the timing capacitor and resistors, thus limiting each output stage duty cycle to less than 50%.

The UCC3808 family offers a variety of package temperature range options, and choice of undervoltage lockout levels.

	UCC2808-2	UCC3808-2
Topology	Full-Bridge, Half-Bridge, Push-Pull	Full-Bridge, Half-Bridge, Push-Pull
Control Method	Current Mode	Current Mode
Duty Cycle(Max)(%)	50	50
Frequency(Max)(kHz)	1000	1000
UVLO Thresholds On/Off(V)	4.3/4.1	4.3/4.1
Pin/Package	8PDIP, 8SOIC	8PDIP, 8SOIC
Regulated Outputs(#)	2	2
Operating Temperature Range(°C)	-40 to 85	0 to 70
Rating	Catalog	Catalog

UCC2808-2 特性

Dual Output Drive Stages in Push-Pull Configuration
130-uA Typical Starting Current
1-mA Typical Run Current
Operation to 1-MHz
Internal Soft Start
On Chip Error Amplifier With 2-MHz Gain Bandwidth Product
On Chip VDD Clamping
Output Drive Stages Capable Of 500-mA Peak Source Current, 1-A Peak Sink Current

UCC2808-2 芯片订购指南

器件	状态	温度 (oC)	价格（美元）	封装 \| 引脚	封装数量 \| 封装载体	丝印标记
UCC2808D-2	ACTIVE	-40 to 85	1.80 \| 1ku	SOIC (D) \| 8	75 \| TUBE	UCC2808 D-2 2808-2
UCC2808D-2G4	ACTIVE	-40 to 85	1.80 \| 1ku	SOIC (D) \| 8	75 \| TUBE	UCC2808 D-2 2808-2
UCC2808DTR-2	ACTIVE	-40 to 85	1.65 \| 1ku	SOIC (D) \| 8	2500 \| LARGE T&R	UCC2808 D-2 2808-2
UCC2808DTR-2G4	ACTIVE	-40 to 85	1.65 \| 1ku	SOIC (D) \| 8	2500 \| LARGE T&R	UCC2808 D-2 2808-2
UCC2808N-2	ACTIVE	-40 to 85	2.10 \| 1ku	PDIP (P) \| 8	50 \| TUBE	UCC2808N-2
UCC2808N-2G4	ACTIVE	-40 to 85	2.10 \| 1ku	PDIP (P) \| 8	50 \| TUBE	UCC2808N-2

UCC2808-2 质量与无铅数据

器件	环保计划*	铅/焊球涂层	MSL 等级/回流焊峰	环保信息与无铅 (Pb-free)	DPPM / MTBF / FIT 率
UCC2808D-2	Green (RoHS & no Sb/Br)	CU NIPDAU	Level-2-260C-2 YEAR		UCC2808D-2
UCC2808D-2G4	Green (RoHS & no Sb/Br)	CU NIPDAU	Level-2-260C-2 YEAR	UCC2808D-2G4	UCC2808D-2G4
UCC2808DTR-2	Green (RoHS & no Sb/Br)	CU NIPDAU	Level-2-260C-2 YEAR		UCC2808DTR-2
UCC2808DTR-2G4	Green (RoHS & no Sb/Br)	CU NIPDAU	Level-2-260C-2 YEAR	UCC2808DTR-2G4	UCC2808DTR-2G4
UCC2808N-2	Green (RoHS & no Sb/Br)	CU NIPDAU	N/A for Pkg Type		UCC2808N-2
UCC2808N-2G4	Green (RoHS & no Sb/Br)	CU NIPDAU	N/A for Pkg Type	UCC2808N-2G4	UCC2808N-2G4

UCC2808-2 应用技术支持与电子电路设计开发资源下载

UCC2808-2 数据资料 dataSheet 下载.PDF
TI 德州仪器AC/DC 和 DC/DC 电源产品选型与价格参考 . xls
Dual MOSFET Driver (PDF 498 KB)
标准线性产品交叉参考 (Rev. D) (PDF 1058 KB)
模数规格和性能特性术语表 (Rev. A) (PDF 1993 KB)
所选封装材料的热学和电学性质 (PDF 645 KB)
高速数据转换 (PDF 1967 KB)
Shelf-Life Evaluation of Lead-Free Component Finishes (PDF 1305 KB)
Analog-to-Digital Converter Grounding Practices Affect System Performance (PDF 56 KB)
Principles of Data Acquisition and Conversion (PDF 50 KB)
Interleaving Analog-to-Digital Converters (PDF 64 KB)
What Designers Should Know About Data Converter Drift (PDF 95 KB)
Giving Delta-Sigma Converters a Gain Boost with a Front End Analog Gain Stage (PDF 70 KB)
Programming Tricks for Higher Conversion Speeds Utilizing Delta Sigma Converters (PDF 105 KB)

UCC2808-2 工具与软件

名称	型号	公司	工具/软件类型
音频的快速搜索选择工具	AUDIO_SELECTION_TOOL	Texas Instruments	免费评估工具
用于音频转换器的软件驱动程序	CODECDRIVERS-SW	Texas Instruments	应用软件