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LINEAR TECHNOLOGY  LTC3850IUF#PBF  DC/DC Controller, High Performance, 2-Phase, 4V to 30V, 2 Outputs, Synchronous Buck, 860kHz, QFN-28

LINEAR TECHNOLOGY LTC3850IUF#PBF
LINEAR TECHNOLOGY LTC3850IUF#PBF
Technical Data Sheet (589.83KB) EN See all Technical Docs

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LINEAR TECHNOLOGY LTC3850IUF#PBF
LINEAR TECHNOLOGY LTC3850IUF#PBF

Product Overview

The LTC3850IUF#PBF is a high-performance dual synchronous step-down Switching Regulator Controller that drives all N-channel power MOSFET stages. The constant-frequency current-mode architecture allows a phase-lockable frequency of up to 780kHz. Power loss and supply noise are minimized by operating the two controller output stages out of phase. OPTI-LOOP compensation allows the transient response to be optimized over a wide range of output capacitance and ESR values. The LTC3850 features a precision 0.8V reference and a power good output indicator. A wide 4 to 24V (28V maximum/30V for LTC3850I) input supply range encompasses most battery chemistries and intermediate bus voltages. Independent TK/SS pins for each controller ramp the output voltages during start-up. Current foldback limits MOSFET heat dissipation during short-circuit conditions.
  • Dual 180° Phased controllers reduce required input capacitance and power supply induced noise
  • RSENSE or DCR current sensing
  • Supports pre-biased output
  • Dual N-channel MOSFET synchronous drive
  • Adjustable soft-start current ramping or tracking
  • Foldback output current limiting
  • Output overvoltage protection
  • Power good output voltage monitor

 

Product Information

Supply Voltage Min:
4V
Supply Voltage Max:
30V
No. of Outputs:
2 Output
Duty Cycle (%):
97.2%
Controller IC Case Style:
QFN
No. of Pins:
28Pins
Switching Frequency:
860kHz
Topology:
Synchronous Buck (Step Down)
Operating Temperature Min:
-40°C
Operating Temperature Max:
85°C
Packaging:
Cut Tape
Product Range:
-
Automotive Qualification Standard:
-
MSL:
MSL 1 - Unlimited
SVHC:
No SVHC (17-Dec-2015)

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Applications

  • Computers & Computer Peripherals;
  • Portable Devices;
  • 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):
.000214

Associated Products