LTC3851EUD-1#PBF External Power Switch Buck Controllers by Analog Devices

Status: Production
Series: LTC3851-1
RoHS: Compliant
Download Datasheet Visit Manufacturer Site View Pricing & Stock

The LTC3851-1 is a high performance synchronous step-down switching regulator controller that drives an all N-channel synchronous power MOSFET stage. A constant frequency current mode architecture allows a phase-lockable frequency of up to 750kHz.OPTI-LOOP compensation allows the transient response to be optimized over a wide range of output capacitance and ESR values. The LTC3851-1 features a precision 0.8V reference and a power good indicator. A wide 4V to 38V (40V absolute maximum) input supply range encompasses most battery configurations and intermediate bus voltages.The TK/SS pin ramps the output voltage during start-up and shutdown with coincident or ratiometric tracking. Current foldback limits MOSFET heat dissipation during short-circuit conditions. The MODE/PLLIN pin selects among Burst Mode operation, pulse skipping mode or continuous inductor current mode at light loads and allows the IC to be synchronized to an external clock. The LTC3851-1 is identical to the LTC3851 except that the ILIM pin is replaced by PGOOD. Features LTC3851 Not Recommended For New Designs LTC3851-1 Not Recommended For New Designs LTC3851A Adjustable Current Limit LTC3851A-1 PGOOD Output

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Prices starting from US$2.40

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Features

Wide VIN Range: 4V to 38V Operation
RSENSE or DCR Current Sensing
±1% Output Voltage Accuracy
Power Good Output Voltage Monitor
Phase-Lockable Fixed Frequency: 250kHz to 750kHz
Dual N-Channel MOSFET Synchronous Drive
Very Low Dropout Operation: 99% Duty Cycle
Adjustable Output Voltage Soft-Start or Tracking
Output Current Foldback Limiting
Output Overvoltage Protection
OPTI-LOOP® Compensation Minimizes COUT
Selectable Continuous, Pulse-Skipping or Burst Mode® Operation at Light Loads
Low Shutdown IQ: 20μA
VOUT Range: 0.8V to 5.5V
Thermally Enhanced 16-Lead MSOP or 3mm × 3mm QFN Package

Last 6 months Inventory & Pricing History


Alternative Descriptions

Sync Buck Sw Reg Cntr | Analog Devices
Dc/Dc Ctrl, Sync Buck, 750Khz, 85Deg C | Newark Electronics
DC/DC CTRL, SYNC BUCK, 750KHZ, 85DEG C | element14


LTC3851EUD-1#PBF Semiconductors - ICs by Linear Technology

BUCK CNTRL SYNCH 38V 25A 16QFN

Status: Unknown
Series: -
RoHS: Unknown
Download Datasheet Visit Manufacturer Site View Pricing & Stock

Specifications

Supply Voltage Min 4V
Supply Voltage Max 38V
No. of Outputs 1 Output, 1Outputs
Duty Cycle (%) 99%
Controller IC Case Style QFN
No. of Pins 16Pins
Switching Frequency 790kHz
Topology Synchronous Buck (Step Down)
Operating Temperature Min -40°C
Operating Temperature Max 85°C
Product Range -
Automotive Qualification Standard -
RoHS Phthalates Compliant Yes
MSL MSL 1 - Unlimited
SVHC No SVHC (15-Jan-2018)
Operating Temperature Range -40°C to +85°C
Output Current 25A
Primary Input Voltage 38V

Frequently Asked Questions

Where can I find additional details, specifications and documents for a LTC3851EUD-1#PBF?

Additional datasheets, footprints and schematics for LTC3851EUD-1#PBF are listed on our Part Details page. You can also find images and similar parts to LTC3851EUD-1#PBF on this page.

What pricing and inventory information can I view?

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What category does LTC3851EUD-1#PBF fall under?

The LTC3851EUD-1#PBF is listed under External Power Switch Buck Controllers.

Can I view similar or alternative parts?

You can view similar parts to LTC3851EUD-1#PBF when available in the External Power Switch Buck Controllers range under the specifications section at the bottom of the details page.

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Is the LTC3851EUD-1#PBF RoHS compliant?

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

Which authorised distributors for LTC3851EUD-1#PBF have stock available?

Authorised distributors including Analog Devices, Newark Electronics, element14 and Farnell have stock available or on a lead time for LTC3851EUD-1#PBF.

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