LTC3728 - 2-Phase Synchronous Step-Down Switching Regulator

Linear Technology (now Analog Devices)

Datasheet Details

Part number	LTC3728
Manufacturer	Linear Technology (now Analog Devices)
File Size	1.63 MB
Description	2-Phase Synchronous Step-Down Switching Regulator
Datasheet	LTC3728 Datasheet

The LTC®3728 is a dual high performance step-down switching regulator controller that drives all N-channel synchronous power MOSFET stages.

A constant-frequency current mode architecture allows phase-lockable frequency of up to 550kHz.

Power loss and noise due to the ESR of the input capacitors are minimized by operating the two controller output stages out of phase.

n Dual, 180° Phased Controllers Reduce Required Input Capacitance and Power Supply Induced Noise n OPTI-LOOP® Compensation Minimizes COUT n ±1% Output Voltage Accuracy n Power Good Output Voltage Indicator n Phase-Lockable Fixed Frequency 250kHz to 550kHz n Dual N-Channel MOSFET Synchronous Drive n Wide VIN Range: 3.5V to 36V Operation n Very Low Dropout Operation: 99% Duty Cycle n Adjustable Soft-Start Current Ramping n Foldback Output Current Limiting n Latched Short-Circuit Shutdown with Defe.

Part Number	Description
LTC3728L	2-Phase Synchronous Regulators
LTC3728L-1	2-Phase Synchronous Regulator
LTC3728LX	2-Phase Synchronous Regulators
LTC3720	Single Phase VRM8.5 Current Mode Step-Down Controller
LTC3722-1	Phase Modulated Full Bridge Controllers
LTC3722-2	Phase Modulated Full Bridge Controllers
LTC3723-1	Synchronous Push-Pull PWM Controllers
LTC3723-2	Synchronous Push-Pull PWM Controllers
LTC3725	Single-Switch Forward Controller and Gate Driver
LTC3726	Secondary-Side Synchronous Forward Controller