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TL3843BDR The Texas Instruments TL3843BDR is a current mode PWM controller designed for DC/DC switching regulator applications. It operates within a voltage range of 7.6V to 30V and supports frequencies up to 500kHz.
Mfr Part #:

TL3843BDR

Available from 1 distributors
Mfr Name: Texas Instruments
Texas Instruments
The Texas Instruments TL3843BDR is a current mode PWM controller designed for DC/DC switching regulator applications. It operates within a voltage range of 7.6V to 30V and supports frequencies up to 500kHz.
✓ Total Stock: 82,182 pcs
$ Price Range: $0.26

TL3843BDR Available from 1 distributor

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✓ Non-Authorised
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Romaks Technologies ✓
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82,182 pcs
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TL3843BDR Specifications Quick View

Most important parameters for selection – full specs in datasheet.
Category
Manufacturer Name
Clock Sync
Control Features
Duty Cycle (Max)
Frequency
Function
Lead Spacing
Mounting Type
Number of Outputs
Operating Temperature
Output Configuration
Output Current
Output Phases
Output Type
Supplier Device Package
Supplier Package
Synchronous Rectifier
Topology
Voltage
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TL3843BDR Description

Short technical summary and product information.

The TL3843BDR from Texas Instruments is a high-performance current-mode Pulse Width Modulation (PWM) controller. It is designed to facilitate the implementation of off-line or DC-to-DC fixed-frequency current-mode control schemes with minimal external components.

 

Key electrical specifications include an operating voltage range of 7.6V to 30V, a maximum duty cycle of 96%, and an operating frequency of up to 500kHz. The device features a low start-up current of less than 0.5mA and specific undervoltage lockout (UVLO) thresholds of 8.4V (on) and 7.6V (off).

 

This controller is suitable for various applications, including switching regulators of any polarity and transformer-coupled DC/DC converters. It is housed in a 14-SOIC package, designed for surface mount applications.

 

The TL3843BDR integrates features such as an error amplifier, internal reference with undervoltage lockout, and a high-current totem-pole output stage. It also includes latching PWM for cycle-by-cycle current limiting and double-pulse suppression.

TL3843BDR Quick Information

Product Type: DC DC Switching Controller
Series: TLx84xB
Canonical Name: TL3843BDR Current Mode PWM Controller
Subcategory: Current Mode

TL3843BDR Compliance

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

TL3843BDR Estimated Pricing

Qty Low High
1+ $0.26 $0.26

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

TL3843BDR Features

  • Current mode PWM controller IC.
  • Wide operating voltage from 7.6V to 30V.
  • High operating frequency up to 500kHz.
  • Maximum duty cycle of 96%.
  • Surface mount 14-SOIC package.

TL3843BDR Applications

  • Used in DC DC power supply designs.
  • Suitable for boost, flyback, forward converters.
  • Ideal for telecom and industrial power systems.
  • Can be used in battery-powered applications.

TL3843BDR FAQs

7 frequently asked questions generated from this part’s specifications.
What is the operating voltage range of the TL3843BDR?

7.6V to 30V.

What is the operating temperature range?

0°C to 70°C (TA).

What package is the TL3843BDR available in?

14-SOIC surface mount package.

What is the maximum switching frequency?

Up to 500kHz.

What is the maximum duty cycle?

96%.

What is the maximum output current?

0.2A.

What are the undervoltage lockout thresholds?

Turn-on at 8.4V, turn-off at 7.6V.

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