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ANALOG DEVICES LTC3891EUDC#TRPBF
DC/DC Controller, Synchronous Buck, 4V to 60V Supply, 1 Output, 99% Duty Cycle, 835kHz, QFN-EP-20
- Manufacturer:
- ANALOG DEVICES ANALOG DEVICES
- Manufacturer Part No:
- LTC3891EUDC#TRPBF
- Order Code:
- 4026578
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- Technical Datasheet:
- LTC3891EUDC#TRPBF Datasheet
- ECAD / MCAD
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Product Overview
LTC®3891 is a high performance step-down switching regulator DC/DC 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. The 50μA no-load quiescent current extends operating run time in battery-powered systems. OPTI-LOOP® compensation allows the transient response to be optimized over a wide range of output capacitance and ESR values. The LTC3891 features a precision 0.8V reference and power good output indicator. A wide 4V to 60V input supply range encompasses a wide range of intermediate bus voltages and battery chemistries. The output voltage of the LTC3891 can be programmed between 0.8V to 24V. The TRACK/SS pin ramps the output voltages during start-up. Current foldback limits MOSFET heat dissipation during short-circuit conditions. Applications include automotive always-on systems, battery powered digital devices, distributed DC power systems.
- Wide VIN range from 4V to 60V (65V abs max)
- Wide output voltage range from 0.8V ≤ VOUT ≤ 24V
- RSENSE or DCR current sensing, phase-lockable frequency (75KHz to 750KHz)
- Programmable fixed frequency (50KHz to 900KHz)
- Selectable continuous, pulse-skipping or low ripple, Burst Mode® operation at light load
- Selectable current limit, very low dropout operation of 99% duty cycle
- Adjustable output voltage soft-start or tracking, power good output voltage monitor
- Output overvoltage protection, low shutdown IQ of
14μA, no current foldback during start-Up - Internal LDO powers gate drive from VIN or EXTVCC
- 20-lead (3mm × 4mm) plastic QFN package, -40°C to 125°C temperature range
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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- 60V
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- 1Outputs
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- 99%
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- QFN-EP
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- 20Pins
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- 835kHz
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- Synchronous Buck (Step Down)
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- -40°C
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- 125°C
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- -
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- -
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- MSL 1 - Unlimited
Technical Documents (1)
Packaging type
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2,500 In stock Need more?
2,500 deliver in 3-4 business days from our UK warehouse :(UK stock) Order before 17:00 Mon-Fri (excluding National Holidays)
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Extra stock is available upon order to the Supplier Lead Time which is approximately 4/7/25
2,500 deliver in 3-4 business days from our UK warehouse
Due to market conditions delivery times are for general guidance only and may be subject to change at short notice
¥1,707.01
(
¥1,877.71
Inc. JCT)
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| Quantity | Price (Incl JCT) | Your Price (Incl JCT) |
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| 1+ | ¥1,707.01 (¥1,877.71) | ( ) |
| 10+ | ¥1,263.41 (¥1,389.75) | ( ) |
| 25+ | ¥1,120.77 (¥1,232.85) | ( ) |
| 100+ | ¥970.29 (¥1,067.32) | ( ) |
| 250+ | ¥893.48 (¥982.83) | ( ) |
| 500+ | ¥852.72 (¥937.99) | ( ) |
| 2500+ | ¥811.97 (¥893.17) | ( ) |
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