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HomeProductsIntegrated Circuits (ICs)PMIC - Voltage Regulators - DC DC Switching ControllersUC3845DTR
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UC3845DTR - Texas Instruments

Manufacturer Part Number
UC3845DTR
Manufacturer
Texas Instruments
Allelco Part Number
32D-UC3845DTR
ECAD Model
Parts Description
IC REG CTRLR MULT TOP 14SOIC
Package
14-SOIC (0.154', 3.90mm Width)
Data sheet
UC1842-45, UC2842-45, UC3842-45.pdf
RoHs Status
ROHS3 Compliant
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Specifications

UC3845DTR Tech Specifications
Texas Instruments - UC3845DTR technical specifications, attributes, parameters and parts with similar specifications to Texas Instruments - UC3845DTR

Product Attribute Attribute Value  
Manufacturer Texas Instruments  
Voltage - Supply (Vcc/Vdd) 12V ~ 28V  
Topology Boost, Buck, Buck-Boost, Flyback, Forward  
Synchronous Rectifier No  
Supplier Device Package 14-SOIC  
Series -  
Serial Interfaces -  
Package / Case 14-SOIC (0.154', 3.90mm Width)  
Package Tape & Reel (TR)  
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) 48%  
Control Features Frequency Control  
Clock Sync No  
Base Product Number UC3845  

Environmental & Export Classifications

ATTRIBUTE DESCRIPTION
RoHs Status ROHS3 Compliant
Moisture Sensitivity Level (MSL) 1 (Unlimited)
REACH Status REACH Unaffected
ECCN EAR99
HTSUS 8542.39.0001

Parts Introduction

Manufacturer Part Number

UC3845DTR

Manufacturer

Texas Instruments

Introduction

UC3845DTR is a high-performance Pulse Width Modulation (PWM) controller designed for power supply management.

Product Features and Performance

Integrated oscillator for precise frequency control

Error amplifier for feedback loop stability

Soft-start feature to reduce inrush current

Under-voltage lockout for system protection

Overcurrent protection

High current totem pole output for driving power MOSFETs

Product Advantages

Robust design suitable for a variety of power applications

High efficiency and reduced power consumption

Precision voltage regulation

Flexible operation with a wide input voltage range

Key Technical Parameters

Input Voltage: -0.3V to 6.3V

Supply Voltage: 12V to 28V

Current - Supply: 11 mA

Operating Temperature: 0°C to 70°C

Mounting Type: Surface Mount

Quality and Safety Features

Built-in fault protection mechanisms

Compliance with industry standards for safety and reliability

Compatibility

Compatible with various power MOSFETs and transformers

Suitable for high-frequency power applications

Application Areas

Switching power supplies

DC-DC Converters

Battery chargers

Power supply circuits in consumer electronics

Product Lifecycle

Active status with ongoing production

Availability of replacements or possible future upgrades not reported

Several Key Reasons to Choose This Product

Reliability and performance proven by Texas Instruments' reputation

Superior control for power supply regulation

Wide range of operating voltages for versatile applications

Comprehensive protection features for enhanced system safety

High integration facilitates simpler and more compact circuit designs

Supported by Texas Instruments' global supply chain and technical support

Parts with Similar Specifications

The three parts on the right have similar specifications to Texas Instruments UC3845DTR

Product Attribute UC3845DTR UC3846DWTR UC3845DR2G UC3845D
Part Number UC3845DTR UC3846DWTR UC3845DR2G UC3845D
Manufacturer Texas Instruments Texas Instruments onsemi Texas Instruments
Duty Cycle (Max) 48% 50% 48% 48%
Clock Sync No Yes No No
Mounting Type Surface Mount Surface Mount Surface Mount Surface Mount
Supplier Device Package 14-SOIC 16-SOIC 14-SOIC 14-SOIC
Output Phases 1 1 1 1
Control Features Frequency Control Current Limit, Enable, Frequency Control, Soft Start Frequency Control Frequency Control
Package / Case 14-SOIC (0.154', 3.90mm Width) 16-SOIC (0.295', 7.50mm Width) 14-SOIC (0.154', 3.90mm Width) 14-SOIC (0.154', 3.90mm Width)
Output Type Transistor Driver Transistor Driver Transistor Driver Transistor Driver
Frequency - Switching Up to 500kHz 500kHz Up to 500kHz Up to 500kHz
Synchronous Rectifier No Yes No No
Voltage - Supply (Vcc/Vdd) 12V ~ 28V 6.95V ~ 40V 7.6V ~ 30V 12V ~ 28V
Output Configuration Positive, Isolation Capable Positive Positive, Isolation Capable Positive, Isolation Capable
Serial Interfaces - - - -
Operating Temperature 0°C ~ 70°C (TA) 0°C ~ 70°C (TA) 0°C ~ 70°C (TA) 0°C ~ 70°C (TA)
Package Tape & Reel (TR) Tape & Reel (TR) Tape & Reel (TR) Tube
Function Step-Up, Step-Down, Step-Up/Step-Down Step-Up, Step-Up/Step-Down Step-Up, Step-Up/Step-Down Step-Up, Step-Down, Step-Up/Step-Down
Number of Outputs 1 2 1 1
Topology Boost, Buck, Buck-Boost, Flyback, Forward Boost, Flyback, Forward Converter, Half-Bridge, Push-Pull Boost, Flyback Boost, Buck, Buck-Boost, Flyback, Forward
Base Product Number UC3845 UC3846 UC3845 UC3845
Series - - - -

UC3845DTR Datasheet PDF

Download UC3845DTR pdf datasheets and Texas Instruments documentation for UC3845DTR - Texas Instruments.

PCN Design/Specification
Mult Devices Font 21/Apr/2018.pdf US18/28/38 DataSheet Update 4/Jan/2017.pdf
HTML Datasheet
UC1842-45, UC2842-45, UC3842-45.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.

Your Faithful Supply Chain Partner -

Contact us if you have any questions.

  1. Phone
    +00852 9146 4856

Certifications & Memberships

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UC3845DTR Image

UC3845DTR

Texas Instruments
32D-UC3845DTR

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