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TL2843BDR The Texas Instruments TL2843BDR is a high-performance, current-mode PWM controller designed for off-line or DC-to-DC fixed-frequency applications. It features a 14-SOIC package and operates over a wide temperature range.
Mfr Part #:

TL2843BDR

Available from 1 distributors
Mfr Name: Texas Instruments
Texas Instruments
The Texas Instruments TL2843BDR is a high-performance, current-mode PWM controller designed for off-line or DC-to-DC fixed-frequency applications. It features a 14-SOIC package and operates over a wide temperature range.
✓ Total Stock: 678 pcs
$ Price Range: $0.26

TL2843BDR Available from 1 distributor

✓ Authorised
✓ Non-Authorised
Distributor Stock Pricing MOQ PKG Lead Time Date Code On Order Quantity On Order Delivery
Optech Co.,Limited ✓
Non-Authorised Inventory information
678 pcs
On Request
678 pcs On Request 1 On Request On Request 06+ On Request On Request
DistyParts aggregates offers from multiple distributors. Final prices, lead times and terms are subject to the distributors' discretion and may change without prior notice. DistyParts is not liable for any discrepancies.

TL2843BDR Specifications Quick View

Most important parameters for selection – full specs in datasheet.
Category
Manufacturer Name
Clock Sync
Control Features
Duty Cycle (Max)
Frequency
Function
Halogen Free
Mounting Type
Number of Outputs
Operating Temperature
Output Configuration
Output Phases
Output Type
SVHC Present
Supplier Device Package
Synchronous Rectifier
Tape & Reel
Topology
Voltage
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TL2843BDR Description

Short technical summary and product information.

The TL2843BDR from Texas Instruments is a control integrated circuit designed for implementing fixed-frequency current-mode control schemes with minimal external components. This device is suitable for switching regulators of any polarity and transformer-coupled DC/DC converters.

 

Key electrical specifications include a low start-up current of less than 0.5mA and an oscillator discharge current typically at 8.3mA. It supports current mode operation up to 500kHz and features automatic feed-forward compensation. The controller includes a latching PWM for cycle-by-cycle current limiting and an internally trimmed reference with undervoltage lockout (UVLO). The UVLO thresholds are typically 8.4V (on) and 7.6V (off), making it suitable for off-line applications. It supports a maximum duty cycle approaching 100%.

 

The TL2843BDR operates within a voltage range of 7.6V to 30V and is characterized for operation from -40°C to 85°C. The output stage is a high-current totem-pole design suitable for driving N-channel MOSFETs.

 

Packaged in a 14-SOIC (0.154", 3.90mm Width) surface-mount package, the TL2843BDR is supplied in quantities of 2500 on tape and reel.

TL2843BDR Quick Information

Product Type: DC DC Switching Controller
Series: TLx84xB
Canonical Name: TL2843BDR Current Mode PWM Controller
Subcategory: Current Mode

TL2843BDR Compliance

RoHS Status: RoHS Compliant
Moisture Sensitivity Level (MSL): 1 Unlimited
REACH Status: REACH Unaffected
Lead Free: No

TL2843BDR Estimated Pricing

Qty Low High
1+ $0.26 $0.26

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

TL2843BDR Features

  • Low start-up current less than 0.5mA.
  • Current mode operation up to 500kHz.
  • Internal reference with UVLO thresholds.
  • High-current totem-pole output stage.
  • Operates from -40°C to 85°C.

TL2843BDR Applications

  • Used in boost converter power supplies.
  • Suitable for flyback converter designs.
  • Applied in forward converter topologies.
  • Step-up/step-down voltage regulation.
  • Ideal for DC DC switching controllers.

TL2843BDR FAQs

7 frequently asked questions generated from this part’s specifications.
What is the operating voltage range of the TL2843BDR?

7.6V to 30V.

What is the package type of the TL2843BDR?

14-SOIC (0.154", 3.90mm Width) surface mount.

What is the operating temperature range of the TL2843BDR?

-40°C to 85°C.

What is the maximum switching frequency of the TL2843BDR?

Up to 500kHz.

What output configuration does the TL2843BDR support?

Positive output, transistor driver, single output.

What topologies are supported by the TL2843BDR?

Boost, Flyback, Forward.

What is the undervoltage lockout threshold of the TL2843BDR?

8.4V on, 7.6V off.

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