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LINEAR TECHNOLOGY  LTC3890EGN-3#PBF  DC/DC Controller, 2-Phase, 4V to 60V, 2 Outputs, Synchronous Buck, 585kHz, SSOP-28

LINEAR TECHNOLOGY LTC3890EGN-3#PBF
Technical Data Sheet (1.24MB) EN See all Technical Docs

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Product Overview

The LTC3890EGN-3#PBF is a high-performance dual step-down Switching Regulator DC/DC Controller drives all N-channel synchronous power MOSFET stages. The 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 4 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.
  • RSENSE or DCR current sensing
  • Out-of-phase controllers reduce input capacitance and power supply induced noise
  • Selectable continuous, pulse-skipping or low ripple burst mode operation at light loads
  • Adjustable output voltage soft-start or tracking
  • Power good output voltage monitor
  • Internal LDO powers gate drive from VIN or EXTVCC

Product Information

Supply Voltage Min:
4V
Supply Voltage Max:
60V
No. of Outputs:
2 Output
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
Packaging:
Each
Product Range:
-
Automotive Qualification Standard:
-
MSL:
MSL 1 - Unlimited
SVHC:
No SVHC (17-Dec-2015)

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Applications

  • Automotive;
  • Power Management

Legislation and Environmental

Moisture Sensitivity Level:
MSL 1 - Unlimited
Country of Origin:
United States

Country in which last significant manufacturing process was carried out

RoHS Compliant:
Yes
Tariff No:
85423990
Weight (kg):
.000426