UCC2808A-1EP 增强型产品低功率电流模式推挽 PWM

The UCC2808A is a family of BiCMOS push-pull, high-speed, low-power, pulse-width modulators. The UCC2808A 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 UCC2808A 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 UCC2808A family offers a variety of package options and choice of undervoltage lockout levels

	UCC2808A-1EP
Control Method	Current
Duty Cycle (Max) (%)	50
Frequency (Max) (kHz)	1000
UVLO Thresholds On/Off (V)	12.5/8.3
Pin/Package	8SOIC
Regulated Outputs (#)	2
Operating Temperature Range (C)	-40 to 125
Rating	HiRel Enhanced Product

UCC2808A-1EP 特性

Controlled Baseline
- One Assembly/Test Site, One Fabrication Site
Extended Temperature Performance of –40°C to 125°C
Enhanced Diminishing Manufacturing Sources (DMS) Support
Enhanced Product-Change Notification
Qualification Pedigree
Dual Output Drive Stages in Push-Pull Configuration
Current Sense Discharge Transistor to Improve Dynamic Response
130-µA 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

UCC2808A-1EP 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
UCC2808AQDR-1EP	ACTIVE	-40 to 125	2.60 \| 100u	SOIC (D) \| 8	2500 \| LARGE T&R
V62/04642-01XE	ACTIVE	-40 to 125	2.60 \| 100u	SOIC (D) \| 8	2500 \| LARGE T&R

UCC2808A-1EP 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
UCC2808AQDR-1EP	Green (RoHS & no Sb/Br)	CU NIPDAU	Level-2-260C-1 YEAR	UCC2808AQDR-1EP	UCC2808AQDR-1EP
V62/04642-01XE	Green (RoHS & no Sb/Br)	CU NIPDAU	Level-2-260C-1 YEAR	V62/04642-01XE	V62/04642-01XE

UCC2808A-1EP 工具与软件

培训内容	型号	软件/工具类型
最常用开关模式电源的功率级设计器	POWERSTAGE-DESIGNER	分析软件