LTC3890IGN-3#PBF High Input Voltage Buck Regulators by Analog Devices

High Input Voltage Buck Regulators
Status: Production
Series: LTC3890-3
RoHS: Compliant
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The LTC3890-3 is a high performance dual step-down switching regulator DC/DC controller that drives all N-channel synchronous power MOSFET stages. A constant frequency current mode architecture allows a phase-lockable frequency of up to 850kHz. Power loss and supply noise are minimized by operating the two controller output stages out-of-phase.The 50μA no-load quiescent current extends operating life in battery-powered systems. OPTI-LOOP® compensation allows the transient response to be optimized over a wide range of output capacitance and ESR values. A wide 4V to 60V input supply range encompasses a wide range of intermediate bus voltages and battery chemistries.Independent TRACK/SS pins for each controller ramp the output voltages during start-up. Current mode control limits the inductor current during short-circuit conditions. The PLLIN/MODE pin selects among Burst Mode operation, pulse-skipping mode, or continuous conduction mode at light loads.For versions with different and/or additional features, see the LTC3890 family summary, Table 1, in the Pin Functions section of this data sheet. LTC3890 LTC3890-1 LTC3890-2 LTC3890-3 Adjustable Current Limit Yes No Yes No CLKOUT/PHASMD for Multiphase Operation Yes No Yes No Number of PGood Outputs 2 1 2 1 OVP – Bottom Gate Crowbar Yes Yes No No Current Limit Foldback Yes Yes No No Light Load Operation when Synced to External Clock Forced Continuous Forced Continuous Pulse Skipping Pulse Skipping SENSE Pins Common Mode Range Common Mode < 0.5V Requires VFB < 0.65V Common Mode < 0.5V Requires VFB < 0.65V Not Dependant on VFB. Easy to make a non-synchronous Boost or SEPIC Not Dependant on VFB. Easy to make a non-synchronous Boost or SEPIC Package 5X5 QFN-32 SSOP-28 5X5 QFN-32 SSOP-28

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Alternative Descriptions

DC/DC Cntrlr Dual-OUT Step Down 900kHz 28-Pin SSOP N Tube | Richardson RFPD

LTC3890IGN-3#PBF Semiconductors - ICs by Linear Technology

BUCK DUAL CNTRL 4-60V 850KHZ 28SSOP

Electronic & Electrical Components>Semiconductors - ICs>Power Management
Status: Unknown
Series: -
RoHS: Unknown
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Specifications

Supply Voltage Min 4V
Supply Voltage Max 60V
No. of Outputs 2 Output, 2Outputs
Duty Cycle (%) 99%
Controller IC Case Style SSOP
No. of Pins 28Pins
Switching Frequency 585kHz
Topology Synchronous Buck (Step Down)
Operating Temperature Min -40°C
Operating Temperature Max 125°C
Product Range -
Automotive Qualification Standard -
RoHS Phthalates Compliant Yes
MSL MSL 1 - Unlimited
SVHC No SVHC (15-Jan-2018)
Device Type MOSFET
Driver Case Style SSOP
Input Delay 95ns
Module Configuration N Channel

Frequently Asked Questions

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What category does LTC3890IGN-3#PBF fall under?

The LTC3890IGN-3#PBF is listed under High Input Voltage Buck Regulators.

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Is the LTC3890IGN-3#PBF RoHS compliant?

Yes. This part has been flagged as RoHS Compliant by Analog Devices.

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