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LTC3892-2

Analog Devices
Part Number LTC3892-2
Manufacturer Analog Devices
Description 2-Phase Synchronous Step-Down DC/DC Controller
Published Mar 29, 2020
Detailed Description FEATURES nn Wide VIN Range: 4.5V to 60V (65V Abs Max) nn Wide Output Voltage Range: 0.8V ≤ VOUT ≤ 99% • VIN nn Adjustabl...
Datasheet PDF File LTC3892-2 PDF File

LTC3892-2
LTC3892-2

Overview
FEATURES nn Wide VIN Range: 4.
5V to 60V (65V Abs Max) nn Wide Output Voltage Range: 0.
8V ≤ VOUT ≤ 99% • VIN nn Adjustable Gate Drive Level 5V to 10V (OPTI-DRIVE) nn No External Bootstrap Diodes Required nn Low Operating IQ: 29μA (One Channel On) nn Selectable Gate Drive UVLO Thresholds nn Out-of-Phase Operation Reduces Required Input Capacitance and Power Supply Induced Noise nn Phase-Lockable Frequency: 75kHz to 850kHz nn Selectable Continuous, Pulse Skipping or Low Ripple Burst Mode® Operation at Light Loads nn Selectable Current Limit (LTC3892/LTC3892-2) nn Very Low Dropout Operation: 99% Duty Cycle nn Power Good Output Voltage Monitors (LTC3892/LTC3892-2) nn Low Shutdown IQ: 3.
6μA nn Small 32-Lead 5mm × 5mm QFN Package (LTC3892/ LTC3892-2) or TSSOP Package (LTC3892-1) APPLICATIONS nn Automotive and Industrial Power Systems nn Distributed DC Power Systems nn High Voltage Battery Operated Systems LTC3892/ LTC3892-1/LTC3892-2 60V Low IQ, Dual, 2-Phase Synchronous Step-Down DC/DC Controller DESCRIPTION The LTC®3892/LTC3892-1/LTC3892-2 is a high performance dual step-down DC/DC switching regulator controller that drives all N-channel synchronous power MOSFET stages.
Power loss and noise are minimized by operating the two controller output stages out-of-phase.
The gate drive voltage can be programmed from 5V to 10V to allow the use of logic or standard-level FETs and to maximize efficiency.
Internal switches in the top gate drivers eliminate the need for external bootstrap diodes.
A wide 4.
5V to 60V input supply range encompasses a wide range of intermediate bus voltages and battery chemistries.
Output voltages up to 99% of VIN can be regulated.
OPTILOOP® compensation allows the transient response and loop stability to be optimized over a wide range of output capacitance and ESR values.
The 29μA no-load quiescent current extends operating run time in battery powered systems.
For a comparison of the LTC3892 to the LTC3892-1 and LTC3892-2, see Table 1 in the Pin Functi...


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