Datasheets
LT3840IUFE#PBF by:
Analog Devices Inc
Analog Devices Inc
Linear Technology
Not Found

Wide Input Range Synchronous Regulator Controller with Accurate Current Limit

Part Details for LT3840IUFE#PBF by Analog Devices Inc

Results Overview of LT3840IUFE#PBF by Analog Devices Inc

Tip: Data for a part may vary between manufacturers. You can filter for manufacturers on the top of the page next to the part image and part number.

LT3840IUFE#PBF Information

LT3840IUFE#PBF by Analog Devices Inc is a Switching Regulator or Controller.
Switching Regulator or Controllers are under the broader part category of Power Circuits.

A power circuit delivers electricity in order to operate a load for an electronic device. Power circuits include transformers, generators and switches. Read more about Power Circuits on our Power Circuits part category page.

Price & Stock for LT3840IUFE#PBF

Part # Distributor Description Stock Price Buy
DISTI # 02AM3119
Newark Dc/Dc Conv, Sync Buck, 1Mhz, 125Deg C Rohs Compliant: Yes |Analog Devices LT3840IUFE#PBF RoHS: Compliant Min Qty: 1 Package Multiple: 1 Date Code: 1 Container: Bulk 0
  • 1 $11.7900
  • 10 $8.0900
  • 25 $7.5200
  • 50 $6.9500
  • 100 $6.3800
  • 250 $5.9100
  • 500 $5.7100
$5.7100 / $11.7900 Buy Now
DISTI # LT3840IUFE#PBF-ND
DigiKey IC REG CTRLR BUCK 38QFN Min Qty: 1 Lead time: 10 Weeks Container: Tube 331
In Stock
  • 1 $11.7900
  • 10 $8.0900
  • 61 $6.3795
  • 122 $5.9069
  • 305 $5.7125
$5.7125 / $11.7900 Buy Now
DISTI # 584-LT3840IUFE#PBF
Mouser Electronics Switching Voltage Regulators Wide In Rng Sync Reg Cntr w/ Acc C Lim RoHS: Compliant 102
  • 1 $11.7900
  • 10 $8.0900
  • 25 $6.3800
  • 100 $5.9000
  • 244 $5.7100
$5.7100 / $11.7900 Buy Now
Analog Devices Inc Wide In Rng Sync Reg Cntr w/ A Package Multiple: 61 1958
  • 1 $11.7900
  • 10 $8.0900
  • 1,000 $4.5700
$4.5700 / $11.7900 Buy Now
DISTI # 35214130
Verical DC/DC Cntrlr Single-OUT Step Down 1000kHz 38-Pin QFN EP Tube RoHS: Compliant Min Qty: 61 Package Multiple: 61 Americas - 1891
  • 61 $5.4600
$5.4600 Buy Now
Rochester Electronics LT3840 - Wide Input Range Synchronous Regulator Controller with Accurate Current Limit RoHS: Compliant Status: Active Min Qty: 1 71
  • 1 $6.3500
  • 25 $6.2200
  • 100 $5.9700
  • 500 $5.7200
  • 1,000 $5.4000
$5.4000 / $6.3500 Buy Now
DISTI # LT3840IUFE#PBF
Richardson RFPD POWER MANAGEMENT IC RoHS: Compliant Min Qty: 61 0
  • 61 $6.8500
  • 100 $6.4800
  • 500 $6.3000
  • 1,000 $6.1300
  • 5,000 $5.9000
$5.9000 / $6.8500 Buy Now

Part Details for LT3840IUFE#PBF

LT3840IUFE#PBF CAD Models

LT3840IUFE#PBF Part Data Attributes

LT3840IUFE#PBF Analog Devices Inc
Buy Now Datasheet
Compare Parts:
LT3840IUFE#PBF Analog Devices Inc Wide Input Range Synchronous Regulator Controller with Accurate Current Limit
Select a part to compare:
Pbfree Code No
Rohs Code Yes
Part Life Cycle Code Active
Ihs Manufacturer ANALOG DEVICES INC
Package Description QFN-38
Pin Count 38
Manufacturer Package Code 05-08-1750
Reach Compliance Code compliant
Samacsys Manufacturer Analog Devices
Analog IC - Other Type SWITCHING CONTROLLER
Control Mode CURRENT-MODE
Input Voltage-Max 60 V
Input Voltage-Min 2.5 V
JESD-30 Code R-PQCC-N38
JESD-609 Code e3
Length 6 mm
Number of Functions 1
Number of Terminals 38
Operating Temperature-Max 125 °C
Operating Temperature-Min -40 °C
Package Body Material PLASTIC/EPOXY
Package Code HVQCCN
Package Equivalence Code LCC38,.16X.24,16
Package Shape RECTANGULAR
Package Style CHIP CARRIER, HEAT SINK/SLUG, VERY THIN PROFILE
Seated Height-Max 0.8 mm
Surface Mount YES
Switcher Configuration BUCK
Switching Frequency-Max 320 kHz
Technology BIPOLAR
Temperature Grade AUTOMOTIVE
Terminal Finish Matte Tin (Sn)
Terminal Form NO LEAD
Terminal Pitch 0.4 mm
Terminal Position QUAD
Width 4 mm

Alternate Parts for LT3840IUFE#PBF

This table gives cross-reference parts and alternative options found for LT3840IUFE#PBF. The Form Fit Function (FFF) tab will give you the options that are more likely to serve as direct pin-to-pin alternates or drop-in parts. The Functional Equivalents tab will give you options that are likely to match the same function of LT3840IUFE#PBF, but it may not fit your design. Always verify details of parts you are evaluating, as these parts are offered as suggestions for what you are looking for and are not guaranteed.

Part Number Manufacturer Composite Price Description Compare
LT3840IUFE#PBF Linear Technology Check for Price LT3840 - Wide Input Range Synchronous Regulator Controller with Accurate Current Limit; Package: QFN; Pins: 38; Temperature Range: -40°C to 85°C LT3840IUFE#PBF vs LT3840IUFE#PBF

LT3840IUFE#PBF Related Parts

LT3840IUFE#PBF Frequently Asked Questions (FAQ)

  • The maximum input voltage that the LT3840 can handle is 42V, but it's recommended to keep it below 40V for reliable operation.

  • To ensure the stability of the output voltage, make sure to use a minimum output capacitance of 10uF, and a maximum ESR of 1 ohm. Also, use a low-ESR capacitor for the input capacitor.

  • The maximum output current that the LT3840 can deliver is 3A, but it's recommended to keep it below 2.5A for reliable operation.

  • The output voltage can be adjusted by using a resistive divider network between the output and the FB pin. The ratio of the resistors determines the output voltage.

  • The EN (enable) pin is used to turn the regulator on or off. When the EN pin is high, the regulator is enabled, and when it's low, the regulator is disabled.