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ANALOG DEVICES LTC3851AEUD#PBF
DC/DC Controller, Synchronous Buck, 4V to 38V Supply, 1 Output, 99% Duty Cycle, 750kHz, QFN-EP-16
- Manufacturer:
- ANALOG DEVICES ANALOG DEVICES
- Manufacturer Part No:
- LTC3851AEUD#PBF
- Order Code:
- 4026504
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- Technical Datasheet:
- LTC3851AEUD#PBF Datasheet
- ECAD / MCAD
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Product Overview
LTC®3851A 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. This features a precision 0.8V reference that is compatible with a wide 4V to 38V input supply range. The TK/SS pin ramps the output voltage during start-up. 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. Typical applications are telecom systems, industrial equipment, distributed DC power systems.
- RSENSE or DCR current sensing, ±1% output voltage accuracy
- 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, 5V internal regulator, OPTI-LOOP® compensation minimizes COUT
- Selectable continuous, pulse-skipping or Burst Mode® operation at light loads
- Feedback current is –50nA maximum
- SENSE pins current is ±2µA
- Regulated feedback voltage range 0.792 to 0.808V (TH=1.2V, 0°C to 85°C, TA=25°C. VIN=15V, VRUN=5V)
- 16-lead plastic QFN package
- Temperature rating range from –40°C to 125°C
Footnotes
ADI products are only authorized (and sold) for use by the customer and are not to be resold or otherwise passed on to any third party
Product Information
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- :
- Current Mode Control
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- 4V
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- 38V
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- 1Outputs
- :
- 99%
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- QFN-EP
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- 16Pins
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- 750kHz
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- Synchronous Buck (Step Down)
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- -40°C
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- 125°C
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- -
- :
- -
- :
- MSL 1 - Unlimited
Technical Documents (1)
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123 deliver in 3-4 business days from our UK warehouse
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¥1,047.68
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¥1,152.45
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| 1+ | ¥1,047.68 (¥1,152.45) | ( ) |
| 10+ | ¥693.75 (¥763.13) | ( ) |
| 25+ | ¥601.41 (¥661.55) | ( ) |
| 121+ | ¥485.30 (¥533.83) | ( ) |
| 363+ | ¥428.04 (¥470.84) | ( ) |
| 605+ | ¥414.08 (¥455.49) | ( ) |
| 1089+ | ¥405.80 (¥446.38) | ( ) |
| 2541+ | ¥405.60 (¥446.16) | ( ) |
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