TL3843DR-8 The Texas Instruments TL3843DR-8 is a current mode PWM controller designed for DC-to-DC converters. It operates with a voltage range of 7.6V to 30V and a switching frequency up to 500kHz.
Mfr Part #:

TL3843DR-8

Available from 3 distributors
Mfr Name: Texas Instruments
Texas Instruments
The Texas Instruments TL3843DR-8 is a current mode PWM controller designed for DC-to-DC converters. It operates with a voltage range of 7.6V to 30V and a switching frequency up to 500kHz.
Total Stock: 26,600 pcs
$ Price Range: $0.23

TL3843DR-8 Available from 3 distributors

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Non-Authorised
Distributor Stock Pricing MOQ PKG Lead Time Date Code On Order Quantity On Order Delivery
Non-Authorised Inventory information
22,454 pcs
22454 pcs On Request 1 On Request On Request 18PB On Request On Request
Non-Authorised Inventory information
3,150 pcs
3150 pcs On Request 1 On Request On Request On Request On Request On Request
Non-Authorised Inventory information
996 pcs
996 pcs On Request 1 On Request On Request 02+ On Request On Request

TL3843DR-8 Specifications Quick View

Most important parameters for selection – full specs in datasheet.
Category
Manufacturer Name
Clock Sync
Control Features
Duty Cycle (Max)
Frequency
Function
Mounting Type
Number of Outputs
Operating Temperature
Output Configuration
Output Phases
Output Type
Supplier Device Package
Supplier Package
Synchronous Rectifier
Topology
Voltage

TL3843DR-8 Description

Short technical summary and product information.

The TL3843DR-8 from Texas Instruments is a current mode PWM controller optimized for off-line and DC-to-DC converters. It features a voltage range of 7.6V to 30V and can operate at switching frequencies up to 500kHz. The controller supports multiple topologies including Boost, Flyback, and Forward configurations.

 

This device is housed in an 8-SOIC package, suitable for surface mount applications. Key features include pulse-by-pulse current limiting, undervoltage lockout with hysteresis, and a high-current totem-pole output. The TL3843DR-8 is designed for interchangeable use with UC2842 and UC3842 series controllers.

 

Its control features include frequency control, and it is not designed for synchronous rectification or clock synchronization. The operating temperature range is from 0°C to 70°C. This component is RoHS3 compliant and has an MSL rating of 1.

TL3843DR-8 Quick Information

Product Type: DC DC Switching Controller
Series: TL384x
Canonical Name: TL3843DR-8 Current Mode PWM Controller
Subcategory: Power Management ICs

TL3843DR-8 Compliance

RoHS Status: RoHS Compliant
Moisture Sensitivity Level (MSL): 1 Unlimited
REACH Status: REACH Unaffected

TL3843DR-8 Estimated Pricing

Qty Low High
1+ $0.23 $0.23

Estimated market price range - modelled values for guidance only, not live distributor offers.

TL3843DR-8 Features

  • Current mode PWM controller for DC-DC converters.
  • Supports Boost, Flyback, and Forward topologies.
  • Operates at up to 500kHz switching frequency.
  • Surface mount 8-SOIC package.
  • RoHS3 compliant with MSL 1 rating.

TL3843DR-8 Applications

  • Optimized for off-line converters.
  • Suitable for DC-to-DC power supplies.
  • Used in various power management circuits.
  • Designed for high-frequency operation.

TL3843DR-8 FAQs

7 frequently asked questions generated from this part’s specifications.
What is the operating voltage range of the TL3843DR-8?

7.6V to 30V.

What is the switching frequency of the TL3843DR-8?

Up to 500kHz.

What is the operating temperature range?

0°C to 70°C.

What package is the TL3843DR-8 available in?

8-SOIC surface mount package.

What topologies does the TL3843DR-8 support?

Boost, flyback, and forward.

What is the maximum duty cycle?

97%.

Does the TL3843DR-8 support synchronous rectification?

No.

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