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LTC1143

Linear Technology
Part Number LTC1143
Manufacturer Linear Technology
Description Dual High Efficiency SO-16 Step-Down Switching Regulator Controllers
Published Mar 22, 2005
Detailed Description LTC1143/LTC1143L LTC1143L-ADJ Dual High Efficiency SO-16 Step-Down Switching Regulator Controllers DESCRIPTION The LTC11...
Datasheet PDF File LTC1143 PDF File

LTC1143
LTC1143

Overview
LTC1143/LTC1143L LTC1143L-ADJ Dual High Efficiency SO-16 Step-Down Switching Regulator Controllers DESCRIPTION The LTC1143 series is a dual step-down switching regulator controller featuring automatic Burst ModeTM operation to maintain high efficiencies at low output currents.
This device is composed of two separate regulator blocks, each driving an external power MOSFET at switching frequencies up to 400kHz using a constant off-time current mode architecture.
Both fixed and adjustable voltages are available.
The operating current level for both regulators is userprogrammable via an external current sense resistor.
Wide input supply range allows operation from 4V to 14V (16V maximum).
The LTC1143L and LTC1143L-ADJ extend operation to VIN = 3.
5V.
100% duty cycle provides low dropout regulation limited only by the RDS(ON) of the external MOSFET and resistance of the inductor and current sense resistor.
The LTC1143 series is ideal for applications requiring dual output voltages with high ...


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