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LTC3813

Features: ` High Output Voltages: Up to 100V` Large 1 Gate Drivers` No Current Sense Resistor Required` Dual N-Channel MOSFET Synchronous Drive` ±0.5% 0.8V Voltage Reference` Fast Transient Response` Programmable Soft-Start` Generates 10V Driver Supply from Input Supply` Synchronizable to External...

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SeekIC No. : 004402366 Detail

LTC3813: Features: ` High Output Voltages: Up to 100V` Large 1 Gate Drivers` No Current Sense Resistor Required` Dual N-Channel MOSFET Synchronous Drive` ±0.5% 0.8V Voltage Reference` Fast Transient Response...

LTC3813 Data Sheet

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Part Number:
LTC3813
Supply Ability:
5000

Price Break

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

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Product Details

Description



Features:

` High Output Voltages: Up to 100V
` Large 1 Gate Drivers
` No Current Sense Resistor Required
` Dual N-Channel MOSFET Synchronous Drive
` ±0.5% 0.8V Voltage Reference
` Fast Transient Response
` Programmable Soft-Start
` Generates 10V Driver Supply from Input Supply
` Synchronizable to External Clock
` Power Good Output Voltage Monitor
` Adjustable Off-Time/Frequency: tOFF(MIN) < 100ns
` Adjustable Cycle-by-Cycle Current Limit
` Programmable Undervoltage Lockout
` Output Overvoltage Protection
` 28-Pin SSOP Package


Application

· 24V Fan Supplies
· 48V Telecom and Base Station Power Supplies
· Networking Equipment, Servers
· Automotive and Industrial Control Systems


Pinout

Connection Diagram


Specifications

Supply Voltages
INTVCC, DRVCC ......................................0.3V to 14V
(DRVCC - BGRTN), (BOOST - SW)..........   0.3V to 14V
BOOST ................................................. 0.3V to 114V
BGRTN ........................................................  5V to 0V
EXTVCC .................................................. 0.3V to 15V
(NDRV - INTVCC) Voltage .........................0.3V to 10V
SW, SENSE+ Voltage ............................... 1V to 100V
IOFF Voltage .........................................0.3V to 100V
SS Voltage ................................................ 0.3V to 5V
PGOOD Voltage .........................................0.3V to 7V
VRNG, VOFF, SYNC, SHDN,
UVIN Voltages ........................................ 0.3V to 14V
PLL/LPF, FB Voltages ..............................0.3V to 2.7V
TG, BG, INTVCC, EXTVCC RMS Currents ................50mA
Operating Temperature Range (Note 2)
LTC3813E .............................................   40 to 85
LTC3813I............................................    40 to 125
Junction Temperature (Notes 3, 7)........................ 125
Storage Temperature Range ..................65 to 150
Lead Temperature (Soldering, 10 sec) .................. 300


Description

The LTC3813 is a synchronous step-up switching regulator controller that can generate output voltages up to 100V. The LTC3813 uses a constant off-time peak current control architecture with accurate cycle-by-cycle current limit, without requiring a sense resistor.

A precise internal reference provides ±0.5% DC accuracy. A high bandwidth (25MHz) error amplifi er provides very fast line and load transient response. Large 1 gate drivers allow the LTC3813 to drive multiple MOSFETs for higher current applications. The operating frequency is selected by an external resistor and is compensated for variations in VIN and can also be synchronized to an external clock for switching-noise sensitive applications. A shutdown pin allows the LTC3813 to be turned off, reducing the supply current to 240A.




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