Datasheet Analog Devices LTC3728LCGN#PBF — Datenblatt

LTC3728L/LTC3728LX
Dual, 550kHz, 2-Phase
Synchronous Regulators
Description Features Dual, 180° Phased Controllers Reduce Required
Input Capacitance and Power Supply Induced Noise
n OPTI-LOOP® Compensation Minimizes C
OUT
n ±1% Output Voltage Accuracy (LTC3728LC)
n Power Good Output Voltage Indicator
n Phase-Lockable Fixed Frequency 250kHz to 550kHz
n Dual N-Channel MOSFET Synchronous Drive
n Wide V
IN Range: 4.5V to 28V Operatio Very Low Dropout Operation: 99% Duty Cycle
n Adjustable Soft-Start Current Ramping
n Foldback Output Current Limiting
n Latched Short-Circuit Shutdown with Defeat Optio Output Overvoltage Protectio Low Shutdown I : 20µA
Q
n 5V and 3.3V Standby Regulators
n 3 Selectable Operating Modes: Constant-Frequency,
Burst Mode® Operation and PWM
n 5mm × 5mm QFN and 28-Lead Narrow SSOP
Packages
n Applications n n n Notebook and Palmtop Computers …