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ADI LTC3891EUDC#PBF
Buck Regulator Positive Output Step-Down DC-DC Controller IC 20-QFN (3x4)
Brands: Analog Devices, Inc
Mfr.Part #: LTC3891EUDC#PBF
Datasheet: LTC3891EUDC#PBF Datasheet (PDF)
Package/Case: 20QFN
Product Type: Power Management ICs
RoHS Status:
Stock Condition: 2182 pcs, New Original
Warranty: 1 Year Ovaga Warranty - Find Out More
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Add To BomLTC3891EUDC#PBF General Description
The LTC3891 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.
Features
- Wide VIN Range: 4V to 60V (65V Abs Max)
- Low Operating IQ: 50μA
- Wide Output Voltage Range: 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: 99% Duty Cycle
- Adjustable Output Voltage Soft-Start or Tracking
- Power Good Output Voltage Monitor
- Output Overvoltage Protection
- Low Shutdown IQ: < 14μA
- Internal LDO Powers Gate Drive from VIN or EXTVCC
- No Current Foldback During Start-Up
- Small 20-Pin 3mm × 4mm QFN and TSSOP Packages
Application
- Automotive Always-On Systems
- Battery Powered Digital Devices
- Distributed DC Power Systems
Specifications
| Parameter | Value | Parameter | Value |
|---|---|---|---|
| feature-topology | Step Down | feature-number-of-outputs | 1 |
| feature-output-voltage-v | 0.8 to 24 | feature-minimum-output-current-a | |
| feature-maximum-output-current-a | feature-minimum-input-voltage-v | 4 | |
| feature-maximum-switching-frequency-khz | 900 | feature-maximum-input-voltage-v | 60 |
| feature-operating-supply-voltage-v | 4 to 60 | feature-maximum-supply-current-ma | 2(Typ) |
| feature-minimum-switching-frequency-khz | 50 | feature-synchronous-rectifier | |
| feature-synchronous-clock | feature-packaging | Tube | |
| feature-rad-hard | feature-pin-count | 20 | |
| feature-supplier-package | QFN EP | feature-standard-package-name1 | QFN |
| feature-cecc-qualified | No | feature-esd-protection | |
| feature-military | No | feature-aec-qualified | Yes |
| feature-aec-qualified-number | feature-auto-motive | No | |
| feature-p-pap | No | feature-eccn-code | EAR99 |
| feature-svhc | No |
Shipping
| Shipping Type | Ship Fee | Lead Time | |
|---|---|---|---|
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DHL | $20.00-$40.00 (0.50 KG) | 2-5 days |
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Fedex | $20.00-$40.00 (0.50 KG) | 2-5 days |
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UPS | $20.00-$40.00 (0.50 KG) | 2-5 days |
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TNT | $20.00-$40.00 (0.50 KG) | 2-5 days |
 |
EMS | $20.00-$40.00 (0.50 KG) | 2-5 days |
 |
REGISTERED AIR MAIL | $20.00-$40.00 (0.50 KG) | 2-5 days |
Processing Time：Shipping fee depend on different zone and country.
Payment
| Terms of payment | Hand Fee | |
|---|---|---|
 |
Wire Transfer | charge US$30.00 banking fee. |
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Paypal | charge 4.0% service fee. |
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Credit Card | charge 3.5% service fee. |
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Western Union | charge US.00 banking fee. |
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Money Gram | charge US$0.00 banking fee. |
Guarantees
1.The electronic components you purchase include 365 Days Warranty, We guarantee product quality.
2.If some of the items you received aren't of perfect quality, we would resiponsibly arrange your refund or replacement. But the items must remain their orginal condition.
Packing
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Step2 :Vacuum packaging
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Step3 :Anti-static bag
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Step4 :Individual packaging
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All the products will packing in anti-staticbag. Ship with ESD antistatic protection.
Outside ESD packing’s lable will use ourcompany’s information: Part Mumber, Brand and Quantity.
We will inspect all the goods before shipment,ensure all the products at good condition and ensure the parts are new originalmatch datasheet.
After all the goods are ensure no problems afterpacking, we will packing safely and send by global express. It exhibitsexcellent puncture and tear resistance along with good seal integrity.
Part points
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The LTC3891EUDC#PBF chip is a high-performance dual synchronous step-down DC/DC controller designed for use in high efficiency power supply systems. It features integrated high-side and low-side MOSFET drivers, capable of delivering up to 97% efficiency. Additionally, it offers programmable frequency and phase shift control for maximum flexibility in power system design.
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Equivalent
Equivalent products of LTC3891EUDC#PBF chip are SM72297, LM5104, and IR1167. These chips are high-performance synchronous step-down DC/DC controllers with similar features and functionalities to the LTC3891EUDC#PBF. -
Features
The LTC3891EUDC#PBF is a synchronous step-down DC/DC controller with a wide input voltage range up to 75V. It features a low quiescent current, high efficiency, precision current sensing, programmable frequency, and soft-start capability. It also has thermal shutdown and adjustable current limit for protection. -
Pinout
The LTC3891EUDC#PBF has a 16-pin UDFN package with the following functions: VCC (pin 1), VIN (pin 16), VOUT (pin 6), COMP (pin 7), RUN/SS (pin 5), INTVCC (pin 3), and SYNC/MODE (pin 2). Additional pins include GND, PGND, LX, RT, FB, VFB, and more for various control and monitoring functions in a synchronous buck-boost DC/DC converter. -
Manufacturer
The manufacturer of the LTC3891EUDC#PBF is Analog Devices Inc. It is an American multinational semiconductor company specializing in data conversion and signal processing technology. Analog Devices Inc. designs and manufactures analog, mixed-signal, and digital signal processing integrated circuits used in electronic equipment. -
Application Field
The LTC3891EUDC#PBF is commonly used in applications such as high-efficiency isolated power supplies, high-power density voltage regulators, point-of-load converters, and battery-powered systems. It is ideal for use in industrial, automotive, telecom, and server applications that require a high level of performance and reliability in power management. -
Package
The LTC3891EUDC#PBF chip is a 28-pin QFN package with a size of 4mm x 5mm.
Datasheet PDF
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365 days quality guarantee for all products
We had a question about one of the components and received a response within minutes. Impressed by their efficiency.