富威集团推出微型可编程Buck Regulators芯片应用于电源解决方

1万 · 2013-10-18 22:23

富威集团推出Qualcomm(Summit)SMB20XA 一系列DC-DC regulators是具有高整合度和可程序化的产品，可广泛的被应用在各种不同的产品设计中，能减少外部使用的零件，使得PCB的使用空间缩小，降低成本和缩短开发的时间。

工作范围 : Vin +4.5V ~ +16V、-40℃ ~ +85℃
IC 封装 : 3mm x 3mm 20-pad QFN

产品特性：
• Single/Dual Step-Down DC-DC Outputs
- Integrated power MOSFET switches
- 1A/2A/4A output current with built in current limit
- Input voltage range: +4.5V to +16V
- +0.8V to +5.0V output voltage (+/-2.5% accuracy)
- Automatic PFM mode for light load efficiency
- 180〫phase interleave (SMB207/A/208/A)
- Integrated frequency compensation
- Input undervoltage lockout (UVLO)

• Integrated Power Control and Programmability
- I2C Digital or Pin Control
- Coarse and Fine Output Voltage Setting
- 16-level “Coarse” nominal setpoint : +0.8V to +1.8V @ 100mV/step
- 16-level “Coarse” nominal setpoint : +2.5/2.3/3.0/3.3/5.0V
- 8-level “Fine” Margining (20XA only) : +1.14% to +7.95% (vs. coarse setting)
- PWM frequency: 500kHz or 1MHz
- Output up/down sequence (SMB207/A/208/A)
- Digital output softstart/stop
- Output UV monitoring with PGOOD/RESET output
- Independent output enable pins (SMB207/A/208/A)

产品应用：
•　Digital Television
•　Cable/Satellite STB
•　Broadband Modems/Gateways/Routers
•　SOHO Datacom Equipment
•　Embedded Computers
•　Disk Drives