LT3481EMSE#PBF Micropower Buck Regulators by Analog Devices

Status: Production
Series: LT3481
RoHS: Compliant
Download Datasheet Visit Manufacturer Site View Pricing & Stock

The LT3481 is an adjustable frequency (300kHz to 2.8MHz) monolithic buck switching regulator that accepts input voltages up to 34V (36V maximum). A high efficiency 0.18Ω switch is included on the die along with a boost Schottky diode and the necessary oscillator, control, and logic circuitry. Current mode topology is used for fast transient response and good loop stability. Low ripple Burst Mode operation maintains high efficiency at low output currents while keeping output ripple below 15mV in a typical application. In addition, the LT3481 can further enhance low output current efficiency by drawing bias current from the output when VOUT is above 3V. Shutdown reduces input supply current to less than 1µA while a resistor and capacitor on the RUN/SS pin provide a controlled output voltage ramp (soft-start). A power good flag signals when VOUT reaches 90% of the programmed output voltage. The LT3481 is available in 10-Pin MSOP and 3mm × 3mm DFN packages with exposed pads for low thermal resistance.

Where to Buy

Prices starting from US$5.02

Distributor Stock
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Analog Devices
from US$5.30
1,838
in stock
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Chip One Stop
from US$5.22
303
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Newark Electronics
from US$6.33
150
in stock
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element14
from US$5.60
150
in stock
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Farnell
from US$5.24
150
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Richardson RFPD
from US$5.02
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Features

Wide Input Range: 3.6V to 34V Operating, 36V Maximum
2A Maximum Output Current
Low Ripple Burst Mode® Operation
50µA IQ at 12VIN to 3.3VOUT 
Output Ripple < 15mV
Adjustable Switching Frequency: 300kHz to 2.8MHz
Low Shutdown Current: IQ < 1µA
Integrated Boost Diode
Power Good Flag
Saturating Switch Design: 0.18Ω On-Resistance
1.265V Feedback Reference Voltage
Output Voltage: 1.265V to 20V
Soft-Start Capability
Synchronizable Between 275kHz to 475kHz
Small 10-Pin Thermally Enhanced MSOP and (3mm × 3mm) DFN Packages

Alternative Descriptions

36V, 2A, 2.8MHz Buck Sw Reg w/ | Analog Devices
Dc/Dc Conv, Buck, 2.8Mhz, 85Deg C | Newark Electronics
DC/DC CONV, BUCK, 2.8MHZ, 85DEG C | element14
DC TO DC CONVERTER | Richardson RFPD


LT3481EMSE#PBF Semiconductors - ICs by Linear Technology

IC SW REG 36V 2A 2.8MHZ 10MSOP

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

Specifications

Topology Buck (Step Down)
Input Voltage Min 3.6V
Input Voltage Max 34V
No. of Outputs 1Outputs
DC / DC Converter IC Case MSOP
No. of Pins 10Pins
Output Current 2A
Output Voltage Min 1.265V
Output Voltage Max 20V
Switching Frequency 2.8MHz
Operating Temperature Max 85°C
Product Range -
Automotive Qualification Standard -
RoHS Phthalates Compliant Yes
MSL MSL 1 - Unlimited
SVHC No SVHC (15-Jan-2018)
Adjustable Output Voltage Max 20V
Adjustable Output Voltage Min 1.265V
Base Number 3481
Frequency 2.8MHz
Operating Temperature Min -40°C
Operating Temperature Range -40°C to +85°C
Output Current Max 2A
Output Voltage 30.6V
Primary Input Voltage 34V
Supply Voltage Min 3.6V
Switch Output Current Isw Max 2A
Termination Type Surface Mount Device
Voltage Regulator Type Step Down (Buck)

Frequently Asked Questions

Where can I find additional details, specifications and documents for a LT3481EMSE#PBF?

Additional datasheets, footprints and schematics for LT3481EMSE#PBF are listed on our Part Details page. You can also find images and similar parts to LT3481EMSE#PBF on this page.

What pricing and inventory information can I view?

Distributor pricing and stock information is available for LT3481EMSE#PBF on our Product Comparison page. Access via the 'View Pricing & Stock' button to view LT3481EMSE#PBF price breaks, MOQs, lead times, inventory and SKUs from distributors.

What category does LT3481EMSE#PBF fall under?

The LT3481EMSE#PBF is listed under Micropower Buck Regulators.

Can I view similar or alternative parts?

You can view similar parts to LT3481EMSE#PBF when available in the Micropower Buck Regulators range under the specifications section at the bottom of the details page.

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Submit any questions directly to the customer support team of the distributor listing the product. For the LT3481EMSE#PBF you can contact the distributor directly for product support, shipping queries etc.

Is the LT3481EMSE#PBF RoHS compliant?

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

Which authorised distributors for LT3481EMSE#PBF have stock available?

Authorised distributors including Analog Devices, Chip One Stop, Newark Electronics, element14 and Farnell have stock available or on a lead time for LT3481EMSE#PBF.

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