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TL3843BD-8 The Texas Instruments TL3843BD-8 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 #:

TL3843BD-8

Available from 1 distributors
Mfr Name: Texas Instruments
Texas Instruments
The Texas Instruments TL3843BD-8 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: 20,897 pcs
$ Price Range: $0.60

TL3843BD-8 Available from 1 distributor

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✓ Non-Authorised
Distributor Stock Pricing MOQ PKG Lead Time Date Code On Order Quantity On Order Delivery
Optech Co.,Limited ✓
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20,897 pcs
On Request
20897 pcs On Request 1 On Request On Request 18+ On Request On Request
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TL3843BD-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
Operating Voltage
Output Configuration
Output Phases
Output Type
Supplier Device Package
Supplier Package
Synchronous Rectifier
Topology
Voltage
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TL3843BD-8 Description

Short technical summary and product information.

The TL3843BD-8 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 and a maximum operating frequency of 500kHz. The device supports a maximum duty cycle of 96% and features an internal reference with undervoltage lockout (UVLO) thresholds typically at 8.4V (on) and 7.6V (off). It also includes features like latching PWM for cycle-by-cycle current limiting and a high-current totem-pole output stage.

 

This controller is suitable for applications such as switching regulators of any polarity and transformer-coupled DC/DC converters. The TL3843BD-8 is available in an 8-SOIC package, designed for surface mount applications. Its operating temperature range is from 0°C to 70°C.

TL3843BD-8 Quick Information

Product Type: DC DC Switching Controller
Series: TLx84xB
Canonical Name: TL3843BD-8 Current Mode PWM Controller
Subcategory: AC/DC Controllers

TL3843BD-8 Compliance

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

TL3843BD-8 Estimated Pricing

Qty Low High
1+ $0.60 $0.60

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

TL3843BD-8 Features

  • High-performance current-mode PWM controller.
  • Operates from 7.6V to 30V supply.
  • Supports frequencies up to 500kHz.
  • 96% maximum duty cycle capability.
  • Available in 8-SOIC surface mount package.

TL3843BD-8 Applications

  • Switching regulators of any polarity
  • Transformer-coupled DC/DC converters
  • Off-line fixed-frequency current-mode control
  • DC-to-DC fixed-frequency current-mode power supplies

TL3843BD-8 FAQs

7 frequently asked questions generated from this part’s specifications.
What is the operating voltage range of the TL3843BD-8?

The TL3843BD-8 operates from 7.6V to 30V.

What package is the TL3843BD-8 available in?

The TL3843BD-8 is available in an 8-SOIC (0.154", 3.90mm width) surface-mount package.

What is the operating temperature range of the TL3843BD-8?

The TL3843BD-8 operates from 0°C to 70°C.

What is the maximum switching frequency of the TL3843BD-8?

The maximum switching frequency is 500kHz.

What is the maximum duty cycle of the TL3843BD-8?

The maximum duty cycle is 96%.

What is the start-up current of the TL3843BD-8?

The start-up current is less than 0.5mA.

What are the undervoltage lockout thresholds of the TL3843BD-8?

The UVLO thresholds are 8.4V (on) and 7.6V (off), typical.

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