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HomeProductsIntegrated Circuits (ICs)PMIC - Voltage Regulators - DC DC Switching ControllersUC3843AD8
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UC3843AD8 - Texas Instruments

Manufacturer Part Number
UC3843AD8
Manufacturer
Texas Instruments
Allelco Part Number
32D-UC3843AD8
ECAD Model
Parts Description
IC REG CTRLR MULT TOPOLOGY 8SOIC
Detailed Description
Package
8-SOIC (0.154', 3.90mm Width)
Data sheet
UC1842A-45A, UC2842A-45A, UC3842A-45A.pdf
RoHs Status
ROHS3 Compliant
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In stock: 65570

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Specifications

UC3843AD8 Tech Specifications
Texas Instruments - UC3843AD8 technical specifications, attributes, parameters and parts with similar specifications to Texas Instruments - UC3843AD8

Product Attribute Attribute Value  
Manufacturer Texas Instruments  
Voltage - Supply (Vcc/Vdd) 7.6V ~ 30V  
Topology Boost, Buck, Flyback, Forward  
Synchronous Rectifier No  
Supplier Device Package 8-SOIC  
Series -  
Serial Interfaces -  
Package / Case 8-SOIC (0.154', 3.90mm Width)  
Package Tube  
Output Type Transistor Driver  
Output Phases 1  
Product Attribute Attribute Value  
Output Configuration Positive, Isolation Capable  
Operating Temperature 0°C ~ 70°C (TA)  
Number of Outputs 1  
Mounting Type Surface Mount  
Function Step-Up, Step-Down, Step-Up/Step-Down  
Frequency - Switching Up to 500kHz  
Duty Cycle (Max) 96%  
Control Features Frequency Control  
Clock Sync No  
Base Product Number UC3843  

Parts Introduction

Manufacturer Part Number

UC3843AD8

Manufacturer

Texas Instruments

Introduction

The UC3843AD8 is a current mode Pulse Width Modulation (PWM) controller integrated circuit designed for power supply control.

Product Features and Performance

Programmable output up to 500 kHz

Automatic feed-forward compensation

Pulse-by-pulse current limiting

Enhanced load response characteristics

Under-voltage lockout with hysteresis

Double pulse suppression

High current totem pole output

Internally trimmed bandgap reference

Product Advantages

High efficiency through current mode control method

Improved system performance with feed-forward compensation

Protection functionality with current limiting and under-voltage lockout

Stable operation with internally trimmed reference

Key Technical Parameters

Voltage Input: -0.3V to 6.3V

Voltage Supply: 7.6V to 30V

Current Supply: 11 mA

Operating Temperature: 0°C to 70°C

Frequency: Up to 500 kHz

Quality and Safety Features

Under-voltage lockout ensures reliable operation under transient conditions

Current limiting provides protection against short-circuit and overcurrent conditions

Compatibility

Compatible with various types of power circuits requiring PWM control

Surface Mount, 8-SOIC device package ensures compatibility with standard PCB manufacturing processes

Application Areas

Switching power supplies

Motor control

Power inverters

Battery chargers

LED drivers

Product Lifecycle

Product Status: Last Time Buy

Customers should seek replacements or consider future upgrades due to approaching discontinuation

Several Key Reasons to Choose This Product

Proven reliability and performance from a leading manufacturer, Texas Instruments

Comprehensive protection features to safeguard against system failures

High-frequency operation reduces the size of passive components, enabling compact power supply designs

Wide range of input and operating voltages suitable for diverse applications

Industry-standard package and pinout for ease of design and sourcing

Parts with Similar Specifications

The three parts on the right have similar specifications to Texas Instruments UC3843AD8

Product Attribute UC3843AD8 UC3843AD8TR UC3843AD1 UC3843ADM
Part Number UC3843AD8 UC3843AD8TR UC3843AD1 UC3843ADM
Manufacturer Texas Instruments Texas Instruments STMicroelectronics Microsemi Corporation
Synchronous Rectifier No No No No
Clock Sync No No No No
Output Phases 1 1 1 1
Supplier Device Package 8-SOIC 8-SOIC 8-SOIC 8-SOIC
Duty Cycle (Max) 96% 96% 96% 96%
Serial Interfaces - - - -
Package Tube Tape & Reel (TR) Tube Bulk
Control Features Frequency Control Frequency Control Frequency Control Frequency Control
Topology Boost, Buck, Flyback, Forward Boost, Buck, Flyback, Forward Boost, Flyback Boost, Buck, Flyback, Forward
Series - - - -
Number of Outputs 1 1 1 1
Package / Case 8-SOIC (0.154', 3.90mm Width) 8-SOIC (0.154", 3.90mm Width) 8-SOIC (0.154', 3.90mm Width) 8-SOIC (0.154', 3.90mm Width)
Output Configuration Positive, Isolation Capable Positive, Isolation Capable Positive, Isolation Capable Positive, Isolation Capable
Function Step-Up, Step-Down, Step-Up/Step-Down Step-Up, Step-Down, Step-Up/Step-Down Step-Up, Step-Up/Step-Down Step-Up, Step-Down
Base Product Number UC3843 UC3843 UC3843 UC3843
Output Type Transistor Driver Transistor Driver Transistor Driver Transistor Driver
Operating Temperature 0°C ~ 70°C (TA) 0°C ~ 70°C (TA) 0°C ~ 70°C (TA) 0°C ~ 70°C (TA)
Frequency - Switching Up to 500kHz Up to 500kHz Up to 500kHz Up to 500kHz
Mounting Type Surface Mount Surface Mount Surface Mount Surface Mount
Voltage - Supply (Vcc/Vdd) 7.6V ~ 30V 7.6V ~ 30V 10V ~ 30V 7.6V ~ 30V

UC3843AD8 Datasheet PDF

Download UC3843AD8 pdf datasheets and Texas Instruments documentation for UC3843AD8 - Texas Instruments.

PCN Design/Specification
Mult Devices Font 21/Apr/2018.pdf UCYYY 13/DEC/2017.pdf
HTML Datasheet
UC1842A-45A, UC2842A-45A, UC3842A-45A.pdf

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Shipment

Delivery Time

In-stock items can be shipped within 24 hours. Some parts will be arranged for delivery within 1-2 days from the date all items arrive at our warehouse. And Allelco ships order once a day at about 17:00, except Sunday. Once the goods are shipped, the estimated delivery time depends on the shipping methods and Delivery destination. The table below shows are the logistic time for some common countries.

Delivery Cost

  1. Use your express account for shipment if you have one.
  2. Use our account for the shipment. Refer to the table below for the approximate charges.
(Different time frame / countries / package size has different price.)

Delivery Method

  1. Global Common Shipment by DHL / UPS / FedEx / TNT / EMS / SF we support.
  2. Others more shipping ways, please get in touch with your customer manager.

Common Countries Logistic Time Reference
Region Country Logistic Time(Day)
America United States 5
Brazil 7
Europe Germany 5
United Kingdom 4
Italy 5
Oceania Australia 6
New Zealand 5
Asia India 4
Japan 4
Middle East Israel 6
DHL & FedEx Shipment Charges Reference
Shipment charges(KG) Reference DHL(USD$)
0.00kg-1.00kg USD$30.00 - USD$60.00
1.00kg-2.00kg USD$40.00 - USD$80.00
2.00kg-3.00kg USD$50.00 - USD$100.00
Note:
The above table is for reference only. There may have some data bias for the uncontrollable factors.
Contact us if you have any questions.

Payment Support

The payment method can be chosen from the methods shown below: Wire Transfer (T/T, Bank Transfer), Western Union, Credit card, PayPal.

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Contact us if you have any questions.

  1. Phone
    +00852 9146 4856

Certifications & Memberships

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UC3843AD8 Image

UC3843AD8

Texas Instruments
32D-UC3843AD8

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