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LTC3714

Features: ` True Current Mode with Ultrafast Transient Response` Stable with Ceramic COUT` tON(MIN) < 100ns for Operation from High Input Ranges` Supports Active Voltage Positioning` No Sense Resistor Required` 5-Bit VID Programmable Output Voltage: 0.6V to 1.75V` Dual N-Channel MOSFET Synchron...

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SeekIC No. : 004402308 Detail

LTC3714: Features: ` True Current Mode with Ultrafast Transient Response` Stable with Ceramic COUT` tON(MIN) < 100ns for Operation from High Input Ranges` Supports Active Voltage Positioning` No Sense Res...

LTC3714 Data Sheet

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Part Number:
LTC3714
Supply Ability:
5000

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  • 1~5000
  • Unit Price
  • Negotiable
  • Processing time
  • 15 Days
Total Cost: $ 0.00

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Upload time: 2024/12/25

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Product Details

Description



Features:

` True Current Mode with Ultrafast Transient Response
` Stable with Ceramic COUT
` tON(MIN) < 100ns for Operation from High Input Ranges
` Supports Active Voltage Positioning
` No Sense Resistor Required
` 5-Bit VID Programmable Output Voltage: 0.6V to 1.75V
` Dual N-Channel MOSFET Synchronous Drive
`Programmable Output Offsets
` Power Good Output Voltage Monitor
` Wide VIN Range: 4V to 36V
` ±1% 0.6V Reference
` Adjustable Frequency
` Programmable Soft-Start
` Output Overvoltage Protection
`Optional Short-Circuit Shutdown Timer
` Forced Continuous Control Pin
` Logic Controlled Micropower Shutdown: IQ 30A
` Available in 0.209" Wide 28-Lead SSOP Package


Application

· Power Supply for Mobile Pentium® Processors and Transmeta Processors
· Notebook and Portable Computers


Pinout

Connection Diagram


Specifications

Input Supply Voltage (VIN), ION..................36V to 0.3V
Boosted Topside Driver Supply Voltage
(BOOST) ................................................... 42V to 0.3V
SW, SENSE Voltages ................................... 36V to 5V
EXTVCC, (BOOST SW), RUN/SS, VID0-VID4,
PGOOD, FCB Voltages ................................. 7V to 0.3V
VON, VRNG Voltages .................(INTVCC + 0.3V) to 0.3V
ITH, VFB, VOSENSE Voltages ........................ 2.7V to 0.3V
TG, BG, INTVCC, EXTVCC Peak Currents ....................... 2A
TG, BG, INTVCC, EXTVCC RMS Currents .............. ......50mA
OPVIN, OP +, OP ............................................. 0V to 18V
Operating Ambient Temperature Range
    LTC3714EG (Note 2) .......................... 40°C to 85
Junction Temperature (Note 3) ................................. 125
Storage Temperature Range ..................... 65 to 150
Lead Temperature (Soldering, 10 sec)...................... 300


Description

The LTC®3714 is a synchronous step-down switching regulator controller for CPU power. An output voltage between 0.6V and 1.75V is selected by a 5-bit code (Intel mobile VID specification). The LTC3714  uses a constant on-time, valley current control architecture to deliver very low duty cycles without requiring a sense resistor. Operating frequency is selected by an external resistor and is compensated for variations in VIN and VOUT.

Discontinuous mode operation of LTC3714 provides high efficiency operation at light loads. A forced continuous control pin reduces noise and RF interference and can assist secondary winding regulation by disabling discontinuous mode when the main output is lightly loaded. Internal op amp allows programmable offsets to the output voltage during power saving modes.

Fault protection of LTC3714 is provided by internal foldback current limiting, an output overvoltage comparator and optional short-circuit shutdown timer. Soft-start capability for supply sequencing is accomplished using an external timing capacitor. The regulator current limit level is user programmable. Wide supply range allows operation from 4V to 36V at the input.




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