• Product Introduction

LTC1143CS 

High-efficiency dual-SO - 16-step drop-down switching regulator controller

peculiarity

• LTC1143 Dual Outputs, LTC1143L: 3.3V, 5V LTC1143L - ADJ: Adjustable Dual
• Extremely high efficiency: more than 95% possible
• Current mode works with excellent line and load transient response
• Thirty years of output current to maintain high efficiency
• Low standby current at light load: 160μA/Output
• Logical Control Shutdown (LTC1143, LTC1143L)
• Wide V IN Range: 3.5V to 16V (LTC1143L,LTC1143L - ADJ)
• Very low dropout operation: 100% duty cycle
• Narrow-body 16-pin SO package
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description

The LTC ® 1143 series is a dual-way, step-down switching regulator controller with automatic burst mode ™ operation to maintain high efficiency at low output currents. The device consists of two independent regulator modules, each driving an external power MOSFET switching frequency of up to 400kHz using a constant shutdown time current-mode architecture. Fixed and adjustable voltages are available.

The current running two regulators is user-programmable, sensing the resistance through an external current. The wide input voltage range allows operation from 4V to 14V (16V max). LTC1143L and LTC1143L - ADJ extended operation to V IN = 3.5V. 100% duty cycle provides low dropout regulation, external MOSFETs and inductors and current sense resistors for resistors R DS(ON), which can only be controlled by a limited number of

LTC1143 series is ideal for dual-output voltage applications that require high conversion efficiency over a wide load current range in a small amount of board space.