What is the Surface Mount ?

having leads that are designed to be soldered on the side of a circuit board that the body of the component is mounted on.

What is the Operating Temperature ?

The operating temperature is the range of ambient temperature within which a power supply, or any other electrical equipment, operate in. This ranges from a minimum operating temperature, to a peak or maximum operating temperature, outside which, the power supply may fail.

What is the Packaging ?

Semiconductor package is a carrier / shell used to contain and cover one or more semiconductor components or integrated circuits. The material of the shell can be metal, plastic, glass or ceramic.

What is the Part Status ?

Parts can have many statuses as they progress through the configuration, analysis, review, and approval stages.

What is the Terminal Form ?

Occurring at or forming the end of a series, succession, or the like; closing; concluding.

What is the Terminal Pitch ?

The center distance from one pole to the next.

What is the Max Supply Voltage ?

In general, the absolute maximum common-mode voltage is VEE-0.3V and VCC+0.3V, but for products without a protection element at the VCC side, voltages up to the absolute maximum rated supply voltage (i.e. VEE+36V) can be supplied, regardless of supply voltage.

What is the Min Supply Voltage ?

The minimum supply voltage (V min ) is explored for sequential logic circuits by statistically simulating the impact of within-die process variations and gate-dielectric soft breakdown on data retention and hold time.

What is the Nominal Supply Current ?

Nominal current is the same as the rated current. It is the current drawn by the motor while delivering rated mechanical output at its shaft.

What is the Quiescent Current ?

The quiescent current is defined as the current level in the amplifier when it is producing an output of zero.

What is the Synchronous Rectifier ?

Synchronous rectification is a technique for improving the efficiency of rectification by replacing diodes with actively controlled switches, usually power MOSFETs or power bipolar junction transistors (BJT).

What is the RoHS Status ?

RoHS means “Restriction of Certain Hazardous Substances” in the “Hazardous Substances Directive” in electrical and electronic equipment.

LT3991IMSE-3.3#PBF | Analog Devices Inc.| IC REG BUCK 3.3V 1.2A 10MSOP

Name: LT3991IMSE-3.3#PBF
Brand: Analog Devices Inc.
Price: 9.33 USD
Availability: InStock
Rating: 5 (51 reviews)

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Quality Guarantee

The LT3991IMSE-3.3 is an adjustable frequency monolithic buck switching regulator that accepts a wide input voltage range up to 55V. Low quiescent current design consumes only 2.8μA of supply current while regulating with no load. Low ripple Burst Mode operation maintains high efficiency at low output currents while keeping the output ripple below 15mV in a typical application. An internally compensated current mode topology is used for fast transient response and good loop stability. A high efficiency 0.44Ω switch is included on the die along with a boost Schottky diode and the necessary oscillator, control and logic circuitry. An accurate 1V threshold enable pin can be used to shut down the LT3991, reducing the input supply current to 700nA. A capacitor on the SS pin provides a controlled inrush current (soft-start). A power good flag signals when VOUT reaches 91% of the programmed output voltage. The LT3991IMSE-3.3 is available in small 10-pin MSOP and 3mm × 3mm DFN packages with exposed pads for low thermal resistance.

Feature

Ultralow Quiescent Current: 2.8μA IQ Regulating 12VIN to 3.3VOUT
Fixed Output Voltages: 3.3V, 5V 2.1μA IQ Regulating 12VIN
Low Ripple Burst Mode® Operation: Output Ripple < 15mVP-P
Wide Input Voltage Range: 4.3V to 55V
1.2A Maximum Output Current
Adjustable Switching Frequency: 200kHz to 2MHz
Synchronizable Between 250kHz to 2MHz
Fast Transient Response
Accurate 1V Enable Pin Threshold
Low Shutdown Current: IQ = 700nA
Power Good Flag
Soft-Start CapabilityV
Internal Compensation
Saturating Switch Design: 0.44Ω On-Resistance
Output Voltage: 1.19V to 30V
Small Thermally Enhanced 10-Pin MSOP Package and (3mm × 3mm) DFN Packages

Applications

Automotive Battery Regulation
Power for Portable Products
Industrial Supplies

Shipping Cost

1. Shipping starts at $40, but prices may vary for certain countries like South Africa, Brazil, India, Pakistan, Israel, etc.
2. The basic freight for packages ≤0.5kg or equivalent volume is influenced by the time zone and country.

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1. Our products are currently shipped using DHL, SF, and UPS. For low quantities, FedEx is the chosen carrier.

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Our strategic hubs located in Futian, Longgang, Nanshan offer a variety of customized programs designed for specific customers' needs.

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1. Every electronic component you purchase from us comes with a 365-Day Warranty. We stand behind the quality of our products.

2. Should you receive any item that isn't in perfect condition, we are committed to arranging a refund or replacement responsibly. Please note that items must be in their original condition for these options to be available.

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Q: How does SZComponents ensure that LT3991IMSE-3.3#PBF is genuinely manufactured or distributed by ?
A: Our professional business development department conducts rigorous testing and verification of the qualifications of original manufacturers and agents of . All suppliers must undergo and pass our qualification review before they are allowed to list their LT3991IMSE-3.3#PBF devices on our platform. We prioritize the sourcing channels and quality of LT3991IMSE-3.3#PBF products above everything else, ensuring thorough supplier audits so you can make your purchase with utmost confidence.
Q: Where can I find detailed information about LT3991IMSE-3.3#PBF chips, including original manufacturer details, Voltage Regulators - DC DC Switching Regulators application, and images?
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A: Due to significant fluctuations in 's inventory, real-time updates are challenging. However, we ensure periodic updates within 24 hours. We recommend confirming your LT3991IMSE-3.3#PBF order with a SZComponents sales representative or through our online customer service before proceeding with payment.
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Q: What is the process for returns or replacements of LT3991IMSE-3.3#PBF?
A: We conduct a Pre-Shipment Inspection (PSI) on randomly selected batches from your order to ensure quality before shipment. We will accept returns or replacements of the LT3991IMSE-3.3#PBF if it does not meet your expectations under the following conditions:
Issues such as incorrect quantities, delivery of wrong items, or obvious external defects are acknowledged by us.
We are informed about the defects within 90 days from the delivery date.
The LT3991IMSE-3.3#PBF remains unused and in its original packaging.
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For more details, refer to our Return & Change Policy.
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Mfr Part #	Price ($)	Quantity Available
LT3991EMSE#TRPBF Analog Devices Inc. IC REG BUCK ADJ 1.2A 10MSOP	6.22	7176 Marketplace
LT3991IDD#PBF Analog Devices Inc. IC REG BUCK ADJ 1.2A 10DFN	34.58	753 Marketplace
LT3991EDD Analog Devices Inc. IC REG BUCK ADJ 1.2A 10DFN	24.89	4954 Marketplace
LT3990IDD#PBF Analog Devices Inc. IC REG BUCK ADJ 350MA 10DFN	5.53	340 Marketplace
LT3991EMSE#PBF Linear Technology IC REG BUCK ADJ 1.2A 10MSOP	9.68	7200 Marketplace

TYPE	DESCRIPTION	Select all
Voltage - Output (Min/Fixed)	3.3V
Package	Tube
Current - Output	1.2A
Product Status	Active
Frequency - Switching	200kHz ~ 2MHz
Function	Step-Down
Synchronous Rectifier	No
Output Configuration	Positive
Operating Temperature	-40°C ~ 125°C (TJ)
Topology	Buck
Mounting Type	Surface Mount
Output Type	Fixed
Package / Case	10-TFSOP, 10-MSOP (0.118", 3.00mm Width) Exposed Pad
Number of Outputs	1
Supplier Device Package	10-MSOP-EP
Voltage - Input (Min)	4.3V
Voltage - Input (Max)	55V

LT3991IMSE-3.3#PBF

$9.33

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FAQs:

Q: How does SZComponents ensure that LT3991IMSE-3.3#PBF is genuinely manufactured or distributed by ?

Q: Where can I find detailed information about LT3991IMSE-3.3#PBF chips, including original manufacturer details, Voltage Regulators - DC DC Switching Regulators application, and images?

Q: Are the prices and stock levels of 's LT3991IMSE-3.3#PBF shown on the platform accurate?

Q: What payment methods are accepted by SZComponents?

Q: How are shipping arrangements made, and how can I track my package?

Q: What is the process for returns or replacements of LT3991IMSE-3.3#PBF?

Q: How can I get support or request datasheets and pin diagrams for LT3991IMSE-3.3#PBF?

Q: How can I contact SZComponents? Please provide specific contact methods.

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