Datasheets
UC3844BD1G by: onsemi

High Performance Current Mode PWM Controller, SOIC-8 Narrow Body, 98-TUBE

Part Details for UC3844BD1G by onsemi

Results Overview of UC3844BD1G by onsemi

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Applications Consumer Electronics Energy and Power Systems Renewable Energy

UC3844BD1G Information

UC3844BD1G by onsemi 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 UC3844BD1G

Part # Distributor Description Stock Price Buy
DISTI # 45J2384
Newark Current Mode Pwm Controller, 25V, 8-Soic, Power Supply Controller Type:Single Ended Controller, No... . Of Channels:1Channels, Control Mode:Current Mode Control, Supply Voltage Min:12V, Supply Voltage Max:25V, Ic Case/Package:Soic Rohs Compliant: Yes |Onsemi UC3844BD1G more RoHS: Compliant Min Qty: 1 Package Multiple: 1 Date Code: 1 Container: Bulk 711
  • 1 $0.2170
  • 10 $0.2170
  • 196 $0.2170
  • 588 $0.2170
  • 1,078 $0.2170
  • 2,548 $0.2170
$0.2170 Buy Now
DISTI # P40:2555_14469524
Arrow Electronics Current Mode PWM Controller 1A 500kHz 8-Pin SOIC N Tube RoHS: Compliant Min Qty: 1 Package Multiple: 1 Lead time: 98 Weeks Date Code: 2229 Europe - 312
  • 1 $0.2731
  • 1,017 $0.2677
$0.2677 / $0.2731 Buy Now
DISTI # V99:2348_07303935
Arrow Electronics Current Mode PWM Controller 1A 500kHz 8-Pin SOIC N Tube RoHS: Compliant Min Qty: 1 Package Multiple: 1 Lead time: 46 Weeks Date Code: 2228 Americas - 4
  • 1 $0.3446
  • 1,017 $0.2697
$0.2697 / $0.3446 Buy Now
DISTI # 70100728
RS UC3844BD1G, PWM Current Mode Controller, 1 A, 500 kHz 8-Pin SOIC | ON Semiconductor UC3844BD1G RoHS: Not Compliant Min Qty: 10 Package Multiple: 1 Container: Bulk 0
  • 10 $0.6400
  • 100 $0.6100
  • 500 $0.5800
  • 1,000 $0.5500
$0.5500 / $0.6400 RFQ
DISTI # 86042716
Verical Current Mode PWM Controller 1A 500kHz 8-Pin SOIC N Tube RoHS: Compliant Min Qty: 1244 Package Multiple: 1 Date Code: 2201 Americas - 4097
  • 1,244 $0.3015
$0.3015 Buy Now
Quest Components SWITCHING CONTROLLER, CURRENT-MODE, 1A, 275KHZ SWITCHING FREQ-MAX, BIPOLAR, PDSO8 10
  • 1 $0.5400
  • 10 $0.4500
$0.4500 / $0.5400 Buy Now
Rochester Electronics UC3844B - Current-Mode PWM Controller RoHS: Compliant Status: Obsolete Min Qty: 1 5685
  • 1 $0.2838
  • 25 $0.2781
  • 100 $0.2668
  • 500 $0.2554
  • 1,000 $0.2412
$0.2412 / $0.2838 Buy Now
ComSIT USA Electronic Component RoHS: Compliant Stock DE - 0
Stock ES - 474
Stock US - 0
Stock MX - 0
Stock CN - 0
Stock HK - 0
RFQ
DISTI # C1S541900428098
Chip One Stop Current Mode PWM Controller 1A 8-Pin SOIC N Tube RoHS: Compliant pbFree: Yes Container: Tube 49
  • 5 $0.1410
  • 10 $0.1370
$0.1370 / $0.1410 Buy Now
Win Source Electronics IC REG CTRLR PWM CM 8-SOIC 39980
  • 125 $0.4070
  • 300 $0.3340
  • 465 $0.3230
  • 640 $0.3130
  • 830 $0.3030
  • 1,110 $0.2710
$0.2710 / $0.4070 Buy Now

Part Details for UC3844BD1G

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UC3844BD1G Part Data Attributes

UC3844BD1G onsemi
Buy Now Datasheet
Compare Parts:
UC3844BD1G onsemi High Performance Current Mode PWM Controller, SOIC-8 Narrow Body, 98-TUBE
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Pbfree Code Yes
Rohs Code Yes
Part Life Cycle Code Obsolete
Ihs Manufacturer ONSEMI
Part Package Code SOIC-8 Narrow Body
Pin Count 8
Manufacturer Package Code 751-07
Reach Compliance Code compliant
ECCN Code EAR99
HTS Code 8542.39.00.01
Factory Lead Time 4 Weeks
Samacsys Manufacturer onsemi
Analog IC - Other Type SWITCHING CONTROLLER
Control Mode CURRENT-MODE
Control Technique PULSE WIDTH MODULATION
Input Voltage-Max 25 V
Input Voltage-Min 12 V
Input Voltage-Nom 15 V
JESD-30 Code R-PDSO-G8
JESD-609 Code e3
Length 4.9 mm
Moisture Sensitivity Level 1
Number of Functions 1
Number of Terminals 8
Operating Temperature-Max 70 °C
Operating Temperature-Min
Output Current-Max 1 A
Package Body Material PLASTIC/EPOXY
Package Code SOP
Package Equivalence Code SOP8,.25
Package Shape RECTANGULAR
Package Style SMALL OUTLINE
Peak Reflow Temperature (Cel) 260
Qualification Status Not Qualified
Seated Height-Max 1.75 mm
Surface Mount YES
Switcher Configuration SINGLE
Switching Frequency-Max 275 kHz
Technology BIPOLAR
Temperature Grade COMMERCIAL
Terminal Finish MATTE TIN
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 UC3844BD1G

This table gives cross-reference parts and alternative options found for UC3844BD1G. 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 UC3844BD1G, 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
UC3844BD1 onsemi Check for Price 1A SWITCHING CONTROLLER, 275kHz SWITCHING FREQ-MAX, PDSO8, SOIC-8 UC3844BD1G vs UC3844BD1
UC2844BD1G onsemi Check for Price 1A SWITCHING CONTROLLER, 275kHz SWITCHING FREQ-MAX, PDSO8, ROHS COMPLIANT, SOIC-8 UC3844BD1G vs UC2844BD1G
UC3844BVD1R2 onsemi Check for Price 1A SWITCHING CONTROLLER, 275kHz SWITCHING FREQ-MAX, PDSO8, SOIC-8 UC3844BD1G vs UC3844BVD1R2
UC3844BVD1R2G onsemi $0.3502 High Performance Current Mode PWM Controller, SOIC-8 Narrow Body, 2500-REEL UC3844BD1G vs UC3844BVD1R2G
UC3844BVD1G onsemi Check for Price High Performance Current Mode PWM Controller, SOIC-8 Narrow Body, 98-TUBE UC3844BD1G vs UC3844BVD1G
UC3844BD1R2G onsemi $0.4377 High Performance Current Mode PWM Controller, SOIC-8 Narrow Body, 2500-REEL UC3844BD1G vs UC3844BD1R2G
Part Number Manufacturer Composite Price Description Compare
MIC38HC43BMT&R Micrel Inc Check for Price Switching Controller, Current-mode, 1A, 500kHz Switching Freq-Max, BICMOS, PDSO8, 0.150 INCH, SOIC-8 UC3844BD1G vs MIC38HC43BMT&R
UC3843ADR2 onsemi Check for Price 1A SWITCHING CONTROLLER, 500kHz SWITCHING FREQ-MAX, PDSO14, PLASTIC, SOIC-14 UC3844BD1G vs UC3843ADR2
MIC3833BWMT&R Microchip Technology Inc Check for Price Switching Controller, Current-mode, 1A, 500kHz Switching Freq-Max, PDSO16, 0.300 INCH, SOIC-16 UC3844BD1G vs MIC3833BWMT&R
UC3845AD Microchip Technology Inc Check for Price Switching Controller, Current-mode, 1A, 500kHz Switching Freq-Max, BIPolar, PDSO14 UC3844BD1G vs UC3845AD
UC3843A-S08-R Unisonic Technologies Co Ltd Check for Price Switching Controller, Current-mode, 1A, 500kHz Switching Freq-Max, PDSO8, SOP-8 UC3844BD1G vs UC3843A-S08-R
SG1845J/883 Microchip Technology Inc Check for Price Switching Controller, Current-mode, 1A, 500kHz Switching Freq-Max, BIPolar, CDIP14 UC3844BD1G vs SG1845J/883
LT1244IS8#PBF Analog Devices Inc $5.1348 High Speed Current Mode Pulse Width Modulators UC3844BD1G vs LT1244IS8#PBF
5962-8670407PX Unitrode Corp (RETIRED) Check for Price Switching Controller, Current-mode, 1A, 500kHz Switching Freq-Max, BIPolar, CDIP8, UC3844BD1G vs 5962-8670407PX
UC2842AD8TR Unitrode Corp (RETIRED) Check for Price Switching Controller, Current-mode, 1A, 500kHz Switching Freq-Max, PDSO8, SOIC-8 UC3844BD1G vs UC2842AD8TR
UC3851NG4 Texas Instruments Check for Price 0.4A SWITCHING CONTROLLER, 500kHz SWITCHING FREQ-MAX, PDIP18, GREEN, PLASTIC, DIP-18 UC3844BD1G vs UC3851NG4

UC3844BD1G Related Parts

UC3844BD1G Frequently Asked Questions (FAQ)

  • The UC3844BD1G can operate up to 500 kHz, but the recommended operating frequency is up to 400 kHz for optimal performance.

  • To ensure stable operation, ensure that the input voltage is within the recommended range, decouple the power supply with a 10uF capacitor, and use a minimum of 1kΩ pull-up resistor on the feedback pin.

  • The soft-start pin (SS) is used to slowly ramp up the output voltage during startup, reducing inrush current and preventing voltage overshoot. It can be connected to a capacitor to ground to set the soft-start time.

  • The minimum duty cycle is typically 0.5% and the maximum duty cycle is typically 99.5%. The exact values can be calculated using the formulas provided in the datasheet, taking into account the oscillator frequency and the maximum and minimum output voltage.

  • The UC3844BD1G should be placed on a multi-layer PCB with a solid ground plane to reduce noise and EMI. Thermal management is critical, and a heat sink or thermal pad may be required depending on the operating conditions and power dissipation.