LTC2926 Datasheet | Linear Technology

LTC2926 MOSFET-Controlled Power Supply Tracker .. Features - - - - - - - DESCRIPTIO Flexible Power Supply Tracking and Sequencing Adjustable Ramp Rates, Offsets and Time Delays Controls Three Supplies with Series MOSFETs Integrated Remote Sense Switching FAULT Input/Output STATUS Output/Power Good Input Available in 20-Lead Narrow SSOP and 20-Lead QFN (4mm × 5mm) Packages The LTC2926 provides a simple solution for tracking and sequencing up to three power supply rails. An N-channel MOSFET and a few resistors per channel configure the load voltages to ramp up and down together, with voltage offsets, with time delays or with different ramp rates. Automatic remote sense switching pensates for voltage drops across the MOSFETs. The LTC2926 provides two integrated switches as well as a signal to control optional additional external N-channel MOSFET sense switches. The LTC2926 includes I/O signals for munication with other devices. The status output asserts after tracking and sequencing have pleted. A low voltage on the power good input after an adjustable timeout period causes load disconnect. A low voltage on the fault I/O causes immediate load disconnect. Until it is reset, a fault latch prevents tracking and keeps the loads disconnected. U APPLICATIO S - - - - VCORE and VI/O Supply Tracking Microprocessor, DSP and FPGA Supplies Servers munications Systems , LT, LTC and LTM are registered trademarks of Linear Technology Corporation. All other trademarks are the property of their respective owners. - Protected by U.S. Patents including 6897717. TYPICAL APPLICATIO 1.8V MODULE OUT 100Ω SENSE IRF7413Z 1.8V SLAVE1 10Ω 500m V/DIV 3.3V MODULE OUT 100Ω SENSE VCC 0.1µF 10Ω SGATE2 SGATE1 S1 15.0k D2 RAMPBUF 15.0k 15.0k 9.53k TRACK2 4.02k 10k FAULT ON/OFF FAULT ON GND PGTMR VCC STATUS/PGI MGATE RAMP 2926 TA01 IRF7413Z 3.3V SLAVE2 D1 FB1 9.53k S2 3.3V SLAVE2 TRACK1 LTC2926 FB2 VCC...