LTC3499BEDD#PBF

step-down DC/DC converter, 16QFN, 0.8 V ~ 5 V, 3A, 1MHz

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Price:: US $1.59~3.66 / piece [Get Latest Price]

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PartNumber:: LTC3499BEDD#PBF

Brand:: Linear Technology - Linear | Pack: STO | D/C: 11+

Availability:: Supply Ability: 10000/Week Can Ship Immediately
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Products Upload time: 2012-10-09

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Part Number:LTC3499BEDD#PBF
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Product Summary

The LTC3499BEDD#PBF is a high efficiency monolithic synchronous, step-down DC/DC converter utilizing a constant frequency, current mode architecture. The LTC3499BEDD#PBF operates from an input voltage range of 2.25V to 5.5V and provides a regulated output voltage from 0.8V to 5V while delivering up to 3A of output current. The internal synchronous power switch with 77mΩ on-resistance increases efficiency and eliminates the need for an external Schottky diode. Switching frequency is set by an external resistor or can be synchronized to an external clock. 100% duty cycle provides low dropout operation extending battery life in portable systems. OPTI-LOOP compensation allows the transient response to be optimized over a wide range of loads and output capacitors. The applications of the LTC3499BEDD#PBF include Point-of-Load Regulation, Notebook Computers, Portable Instruments and Distributed Power Systems.

Parametrics

LTC3499BEDD#PBF absolute maximum ratings: (1)Input Supply Voltage: –0.3V to 6V; (2)ITH, RUN/SS, VFB, PGOOD, SYNC/MODE Voltages: –0.3 to VIN; (3)SW Voltages: –0.3V to (VIN + 0.3V); (4)Operating Ambient Temperature Range: –40 to 85℃; (5)Junction Temperature: 125℃; (6)Lead Temperature (Soldering, 10 sec): 300℃.

Features

LTC3499BEDD#PBF features: (1)High Efficiency: Up to 95%; (2)3A Output Current; (3)Low Quiescent Current: 64μA; (4)Low RDS(ON) Internal Switch: 77mΩ; (5)2.25V to 5.5V Input Voltage Range; (6)Programmable Frequency: 300KHz to 4MHz; (7)±2% Output Voltage Accuracy; (8)0.8V Reference Allows Low Output Voltage; (9)Selectable Forced Continuous/Burst Mode operation with Adjustable Burst Clamp; (10)Synchronizable Switching Frequency; (11)Low Dropout Operation: 100% Duty Cycle; (12)Power Good Output Voltage Monitor; (13)Overtemperature Protected; (14)Available in 16-Lead Exposed Pad TSSOP and QFN Packages.