Datasheet for DC349B:
- Manufacturer Part Number : DC349B
- Manufacturer : AD
- Description : SMBus VID Voltage Programmers IC
- Series : LTC1699
- Reference Price : USD 0
- Our Price : We have a better price, contact us by email
- Product Type : Power Control
- Function : VID Voltage Programmers
- Current Suggest : Production
- Status : Production
- ROHS Status : ROHS Compliant (Lead Free)
- Package Type : LTC1700EMS | No Rsense, 2.5Vin to 3.3Vout @ 1A or 5.0Vout @ 800mA
- Pins : -
- MFG Package Case : -
- Part Type : EVAL
- Standard Packing Type : -
- Standard Packing Quantity : -
- Working Temperature : -
- Other Part Number : DC349B
- Shipping methods : DHL FEDEX UPS TNT
- Delivery Time : Ship within 1 day.
- Manufacturer Production time : 6-8 weeks (Normally have stocks)
- Weight : 0.001KG
Contact us to check the best price and real time inventory quantity for DC349B. If you need any more information about DC349B, you can also send us by email. Our email is [email protected], we will reply you in 12 hours.
The LTC1699-80, LTC1699-81 and LTC1699-82 are precision (±0.35% max), digitally programmed resistor dividers that comply with Intel 5-bit mobile (LTC1699-80), desktop VRM8.4 (LTC1699-81) and VRM9.0 (LTC1699-82) VID specifications. Each IC can switch the output of a DC/DC converter between two set voltages. A digital input pin, SEL, selects one of two divider settings stored into registers via a 2-wire SMBus interface.
The SMBus interface uses Write Word protocol to setup the registers and to turn the DC/DC converters on or off. Read Word protocol is used to verify register contents and to return the On/Off status of the converters. The LTC1699-80, LTC1699-81 and LTC1699-82 incorporate safeguards against errors due to bus conflicts.
Three open-drain N-channel outputs (CPU_ON, IO_ON and CLK_ON) are provided to turn DC/DC converter supplies on or off via their RUB/SS inputs. A global control pin, VRON is used to turn the converters on or off simultaneously. An internal timer pulls the PGOOD pin low for 50µs if the divider setting changes or the converters are turned on via the SMBus and the VRON pin.
Applications
- Intel Desktop Pentium® III Power Supply
- Intel Mobile Pentium® Power Supply with Intel SpeedStep™ Technology
- Desktop AMD Athlon™ Power Supply
- Software Programmable Remote Power Supply
- Power Supplies with Voltage Margining
At least one model within this product family is in production and available for purchase. The product is appropriate for new designs but newer alternatives may exist.
