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Power Circuits / Switching Regulator or Controllers / UC3843D
Datasheets
UC3843D by:

Single ended 500KHz current mode PWM controller with 8.4V/7.6V UVLO 100% duty cycle, 0C to 70C 14-SOIC 0 to 70

Part Details for UC3843D by Texas Instruments

Overview of UC3843D by Texas Instruments

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.

Applications Consumer Electronics Energy and Power Systems Renewable Energy

Available Datasheets

Part # Manufacturer Description Datasheet
UC3843D8TR Texas Instruments Current-Mode PWM Controller 8-SOIC 0 to 70
UC3843D8G4 Texas Instruments Current-Mode PWM Controller 8-SOIC 0 to 70
UC3843D8TRG4 Texas Instruments Current-Mode PWM Controller 8-SOIC 0 to 70

Price & Stock for UC3843D

Part # Distributor Description Stock Price Buy
DISTI # 296-11286-5-ND
DigiKey IC REG CTRLR MULT TOP 14SOIC Min Qty: 1 Lead time: 6 Weeks Container: Tube 305
In Stock
  • 1 $1.3500
  • 10 $0.9790
  • 50 $0.8312
  • 100 $0.7857
  • 250 $0.7375
  • 500 $0.7084
  • 1,000 $0.6845
  • 2,500 $0.6593
  • 5,000 $0.6441
$0.6441 / $1.3500 Buy Now
DISTI # 595-UC3843D
Mouser Electronics Switching Controllers Current Mode RoHS: Compliant 134
  • 1 $1.5700
  • 10 $1.3300
  • 100 $1.0200
  • 500 $0.9010
  • 1,000 $0.6850
  • 2,500 $0.6530
  • 5,000 $0.6240
  • 10,000 $0.6070
$0.6070 / $1.5700 Buy Now
DISTI # J56:1989_00023548
Arrow Electronics Current Mode PWM Controller 200mA 500kHz 14-Pin SOIC Tube RoHS: Compliant Min Qty: 50 Package Multiple: 50 Lead time: 6 Weeks Date Code: 2044 Europe - 1000
  • 50 $0.6784
  • 100 $0.6019
  • 500 $0.5959
  • 1,000 $0.5932
  • 2,500 $0.5736
  • 5,000 $0.5574
  • 10,000 $0.5487
$0.5487 / $0.6784 Buy Now
DISTI # 86041434
Verical Current Mode PWM Controller 200mA 500kHz 14-Pin SOIC Tube RoHS: Compliant Min Qty: 489 Package Multiple: 1 Date Code: 1001 Americas - 10300
  • 489 $0.7670
  • 511 $0.7344
  • 1,000 $0.6936
$0.6936 / $0.7670 Buy Now
DISTI # 86042709
Verical Current Mode PWM Controller 200mA 500kHz 14-Pin SOIC Tube RoHS: Compliant Min Qty: 489 Package Multiple: 1 Americas - 1500
  • 489 $0.7670
  • 511 $0.7344
  • 1,000 $0.6936
$0.6936 / $0.7670 Buy Now
Bristol Electronics   1290
RFQ
Quest Components IC,SMPS CONTROLLER,CURRENT-MODE,BIPOLAR,SOP,14PIN,PLASTIC 36
  • 1 $0.7300
  • 8 $0.5840
  • 35 $0.3650
$0.3650 / $0.7300 Buy Now
Rochester Electronics UC3843 Current-Mode PWM Controller RoHS: Compliant Status: Active Min Qty: 1 10903
  • 1 $0.6528
  • 25 $0.6397
  • 100 $0.6136
  • 500 $0.5875
  • 1,000 $0.5549
$0.5549 / $0.6528 Buy Now
DISTI # UC3843D
TME IC: PMIC, PWM controller, 1A, 47÷500kHz, Ch: 1, SO14, 8.4÷28V, 0÷97% Min Qty: 1 271
  • 1 $1.4000
  • 5 $1.2700
  • 25 $1.1700
  • 100 $1.0400
  • 250 $0.8400
$0.8400 / $1.4000 Buy Now

Part Details for UC3843D

UC3843D CAD Models

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UC3843D Part Data Attributes

Parametric Data
UC3843D Texas Instruments
Buy Now Datasheet
Compare Parts:
UC3843D Texas Instruments Single ended 500KHz current mode PWM controller with 8.4V/7.6V UVLO 100% duty cycle, 0C to 70C 14-SOIC 0 to 70
Pbfree Code Yes
Rohs Code Yes
Part Life Cycle Code Active
Ihs Manufacturer TEXAS INSTRUMENTS INC
Part Package Code SOIC
Package Description GREEN, PLASTIC, MS-012AB, SOIC-14
Pin Count 14
Reach Compliance Code compliant
ECCN Code EAR99
HTS Code 8542.39.00.01
Samacsys Manufacturer Texas Instruments
Analog IC - Other Type SWITCHING CONTROLLER
Control Mode CURRENT-MODE
Control Technique PULSE WIDTH MODULATION
Input Voltage-Max 28 V
Input Voltage-Min 8.2 V
Input Voltage-Nom 15 V
JESD-30 Code R-PDSO-G14
JESD-609 Code e4
Length 8.65 mm
Moisture Sensitivity Level 1
Number of Functions 1
Number of Terminals 14
Operating Temperature-Max 70 °C
Operating Temperature-Min
Output Current-Max 1 A
Output Voltage-Nom 2.5 V
Package Body Material PLASTIC/EPOXY
Package Code SOP
Package Equivalence Code SOP14,.25
Package Shape RECTANGULAR
Package Style SMALL OUTLINE
Peak Reflow Temperature (Cel) 260
Qualification Status Not Qualified
Seated Height-Max 1.75 mm
Supply Current-Max (Isup) 25 mA
Supply Voltage-Max (Vsup) 28 V
Supply Voltage-Min (Vsup) 8.4 V
Surface Mount YES
Switcher Configuration BUCK-BOOST
Switching Frequency-Max 500 kHz
Technology BIPOLAR
Temperature Grade COMMERCIAL
Terminal Finish Nickel/Palladium/Gold (Ni/Pd/Au)
Terminal Form GULL WING
Terminal Pitch 1.27 mm
Terminal Position DUAL
Time@Peak Reflow Temperature-Max (s) 30
Width 3.9 mm

Alternate Parts for UC3843D

This table gives cross-reference parts and alternative options found for UC3843D. 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 UC3843D, 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
CS-3843BD14 Cherry Semiconductor Corporation Check for Price Switching Controller, Current-mode, 1A, 500kHz Switching Freq-Max, BIPolar, PDSO14, UC3843D vs CS-3843BD14
UC3843DTR Texas Instruments Check for Price Single ended 500KHz current mode PWM controller with 8.4V/7.6V UVLO 100% duty cycle, 0C to 70C 14-SOIC 0 to 70 UC3843D vs UC3843DTR
UC3843DG4 Texas Instruments Check for Price Single ended 500KHz current mode PWM controller with 8.4V/7.6V UVLO 100% duty cycle, 0C to 70C 14-SOIC 0 to 70 UC3843D vs UC3843DG4
UC2843DR Texas Instruments Check for Price 1A SWITCHING CONTROLLER, 500kHz SWITCHING FREQ-MAX, PDSO14, PLASTIC, MS-012AB, SOIC-14 UC3843D vs UC2843DR
UC2845DTR Texas Instruments $0.5721 Single ended 500KHz current mode PWM controller with 8.4V/7.6V UVLO 50% duty cycle, -40C to 85C 14-SOIC -40 to 85 UC3843D vs UC2845DTR
CS-2843AD14 Cherry Semiconductor Corporation Check for Price Switching Controller, Current-mode, 1A, 500kHz Switching Freq-Max, PDSO14, UC3843D vs CS-2843AD14
UC3845DR Texas Instruments Check for Price 1A SWITCHING CONTROLLER, 500kHz SWITCHING FREQ-MAX, PDSO14, PLASTIC, MS-012AB, SOIC-14 UC3843D vs UC3845DR
UC2843D Texas Instruments $1.1175 30-V, 1-A, 500KHz current mode PWM controller with 8.4V/7.6V UVLO 100% duty cycle, -40C to 85C 14-SOIC -40 to 85 UC3843D vs UC2843D
UC2843DTR Texas Instruments Check for Price 30-V, 1-A, 500KHz current mode PWM controller with 8.4V/7.6V UVLO 100% duty cycle, -40C to 85C 14-SOIC -40 to 85 UC3843D vs UC2843DTR
CS-3845BD8 Cherry Semiconductor Corporation Check for Price Switching Controller, Current-mode, 1A, 500kHz Switching Freq-Max, BIPolar, PDSO8, UC3843D vs CS-3845BD8

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