LTC3704EMS#PBF

LTC3704 - Wide Input Range, No RSENSE Positive-to-Negative DC/DC Controller

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Price:: US $1.30~1.50 / piece [Get Latest Price]

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	US $1.30~1.50

PartNumber:: LTC3704EMS#PBF

Brand:: Linear Technology - Linear | Pack: MSOP | D/C: 06+

Availability:: Supply Ability: 10000/Week Can Ship Immediately
Delivery: 10-15 Business Days (ships out within 3 Business days)

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Products Upload time: 2012-10-18

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Part Number:LTC3704EMS#PBF
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Product Summary

The LTC3704 is a wide input range, current mode, positive-to-negative DC/DC controller that drives an N-channel power MOSFET and requires very few external components. Intended for low to high power applications, it eliminates the need for a current sense resistor by utilizing the power MOSFET’s on-resistance, thereby maximizing efficiency.

The IC’s operating frequency can be set with an external resistor over a 50kHz to 1MHz range, and can be synchronized to an external clock using the MODE/SYNC pin. Burst Mode operation at light loads, a low minimum operating supply voltage of 2.5V and a low shutdown quiescent current of 10μA make the LTC3704 ideally suited for battery-operated systems.

For applications requiring constant frequency operation, the Burst Mode operation feature can be defeated using the MODE/SYNC pin. Higher than 36V switch voltage applications are possible with the LTC3704 by connecting the SENSE pin to a resistor in the source of the power MOSFET.

The LTC3704 is available in the 10-lead MSOP package.

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Features

High Efficiency Operation (No Sense Resistor Required)
Wide Input Voltage Range: 2.5V to 36V
Current Mode Control Provides Excellent Transient Response
High Maximum Duty Cycle (Typ 92%)
±1% Internal Voltage Reference
±2% RUN Pin Threshold with 100mV Hysteresis
Micropower Shutdown: IQ = 10μA
Programmable Operating Frequency (50kHz to 1MHz) with One External Resistor
Synchronizable to an External Clock Up to 1.3 x fOSC
User-Controlled Pulse Skip or Burst Mode? Operation
Internal 5.2V Low Dropout Voltage Regulator
Capable of Operating with a Sense Resistor for High Output Voltage Applications (VDS>36V)
Small 10-Lead MSOP Package