RT9205/RT9205A Dual Regulators

RT9205/RT9205A Dual Regulators - Synchronous Buck PWM DC-DC and Linear Controller

The RT9205/A is a dual-output power controllers designed for high performance graphics cards and personal computers. The IC integrates a synchronous buck controller, a linear controller and protection functions into a small 14-pin package.
The RT9205/A uses an internal compensated voltage mode PWM control for simplying design. An internal 0.8V reference allows the output voltage to be precisely regulated to meet low output voltage requirement. A fixed 300kHz oscillation frequency reduces the component size for saving board area.
The RT9205/A also features over voltage protection (OVP) and under voltage lock-out (UVLO).

Ordering Info

Note : Richtek Pb-free and Green products are : ► RoHS compliant and compatible with the current require- ments of IPC/JEDEC J-STD-020. ► Suitable for use in SnPb or Pb-free soldering processes.

Features

• Operates at 5V
• 0.8V Internal Reference
• Drives Two N-MOSFET
• Voltage Mode PWM Control
• Fast Transient Response
• Fixed 300kHz Oscillator Frequency
• Dynamic 0 to 100% Duty Cycle
• Internal PWM Loop Compensation
• Internal Soft-Start
• Adaptive Non-Overlapping Gate Driver
• Over-Voltage Protection Uses Lower MOSFET
• RoHS Compliant and 100% Lead (Pb)-Free
 
 
Application

• PC Motherboard
• Cable Modems, Set--Box, and XDSL Modems
• DSP and Core Communications Processor Supplies
• Memory Power Supplies
• Personal Computer Peripherals
• Industrial Power Supplies
• 5V Input DC-DC Regulators
• Low Voltage Distributed Power Supplies
• Graphic Cards

Pin Configurations
(TOP VIEW)



SOP-14

Typical Applications Circuit

Figure 1. RT9205/A powered form 5V

Figure 2. RT9205/A powered from 12V

Layout Placement

Layout Notes
1. Put C1 & C2 to be near the MU drain and ML source nodes.
2. Put RT9205/A to be near the C_OUT
3. Put C_BOOT as close as to BOOT pin
4. Put C_VCC as close as to VCC pin

RegulatorsBuckSynchronousdualRT9205AControllerDual

免责声明：本网信息来自于互联网，目的在于传递更多信息，并不代表本网赞同其观点。其原创性以及文中陈述文字和内容未经本站证实，对本文以及其中全部或者部分内容、文字的真实性、完整性、及时性本站不作任何保证或承诺，并请自行核实相关内容。本站不承担此类作品侵权行为的直接责任及连带责任。如若本网有任何内容侵犯您的权益，请及时联系我们，本站将会在24小时内处理完毕。