LT1940LEFE#TRPBF

LT1940LEFE#TRPBF, Step-Down Switching Regulator, SSOP, 1.4A, 1.1MHz, Linear Technology

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Price:: US $1.00~1.50 / piece [Get Latest Price]

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PartNumber:: LT1940LEFE#TRPBF

Brand:: Linear Technology - Linear | Pack: SSOP | 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: 2012-08-30

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Part Number:LT1940LEFE#TRPBF
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Product Summary

The LT1940LEFE#TRPBF is a Step-Down Switching Regulator. The LT1940LEFE#TRPBF is a dual current mode PWM step-down DC/DC converter with internal 2A power switches. Both converters are synchronized to a single 1.1MHz oscillator and run with opposite phases, reducing input ripple current. The output voltages are set with external resistor dividers, and each regulator has independent shutdown and soft-start circuits. Each regulator generates a power good signal when its output is in regulation, easing power supply sequencing and interfacing with microcontrollers and DSPs. The applications of the LT1940LEFE#TRPBF include Disk Drives, DSP Power Supplies, Wall Transformer Regulation, Distributed Power Regulation, DSL Modems and Cable Modems.

Parametrics

LT1940LEFE#TRPBF absolute maximum ratings: (1)VIN Voltage: (–0.3), 25V; (2)BOOST Pin Voltage: 35V; (3)BOOST Pin Above SW Pin: 25V; (4)PG Pin Voltage: 25V; (5)SHDN, FB Pins: 6V; (6)SW Voltage: VIN; (7)Maximum Junction Temperature: 125℃; (8)Operating Temperature Range (Note 2): –40℃ to 85℃; (9)Storage Temperature Range: –65℃ to 150℃; (10)Lead Temperature (Soldering, 10 sec): 300℃.

Features

LT1940LEFE#TRPBF features: (1)Wide Input Voltage Range: 3.6V to 25V; (2)Two 1.4A Output Switching Regulators with Internal Power Switches; (3)Small 16-Lead TSSOP Surface Mount Package; (4)Constant 1.1MHz Switching Frequency; (5)Anti-Phase Switching Reduces Ripple; (6)Independent Shutdown/Soft-Start Pins; (7)Independent Power Good Indicators Ease Supply Sequencing; (8)Uses Small Inductors and Ceramic Capacitors.