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See Technical Specifications

TL1451CN +BOM

Dual Pulse-Width-Modulation Control Circuit

Manufacturer:

Texas Instruments, Inc
Mfr.Part #:

TL1451CN
Datasheet:

TL1451CN Datasheet (PDF)
Output Type:

Transistor Driver
Function:

Step-Up, Step-Down, Step-Up/Step-Down
Output Configuration:

Positive
Topology:

Buck, Boost, Flyback
EDA/CAD Models:

Request Free CAD Models for TL1451CN

TL1451CN General Description

The TL1451A incorporates on a single monolithic chip all the functions required in the construction of two pulse-width-modulation (PWM) control circuits. Designed primarily for power-supply control, the TL1451A contains an on-chip 2.5-V regulator, two error amplifiers, an adjustable oscillator, two dead-time comparators, undervoltage lockout circuitry, and dual common-emitter output transistor circuits.

The uncommitted output transistors provide common-emitter output capability for each controller. The internal amplifiers exhibit a common-mode voltage range from 1.04 V to 1.45 V. The dead-time control (DTC) comparator has no offset unless externally altered and can provide 0% to 100% dead time. The on-chip oscillator can be operated by terminating RT and CT. During low V_CC conditions, the undervoltage lockout control circuit feature locks the outputs off until the internal circuitry is operational.

The TL1451AC is characterized for operation from -20°C to 85°C. The TL1451AQ is characterized for operation from -40°C to 125°C. The TL1451AM is characterized for operation from -55°C to 125°C.

Key Features

Complete PWM Power Control Circuitry
Completely Synchronized Operation
Internal Undervoltage Lockout Protection
Wide Supply Voltage Range
Internal Short-Circuit Protection
Oscillator Frequency.500 kHz Max
Variable Dead Time Provides Control Over Total Range
Internal Regulator Provides a Stable 2.5-V Reference Supply
Available in Q-Temp Automotive
HighRel Automotive Applications
Configuration Control / Print Support
Qualification to Automotive Standards

Specifications

Category	Integrated Circuits (ICs)Power Management (PMIC)DC DC Switching Controllers	Series	-
Output Type	Transistor Driver	Function	Step-Up, Step-Down, Step-Up/Step-Down
Output Configuration	Positive	Topology	Buck, Boost, Flyback
Number of Outputs	2	Output Phases	1
Voltage - Supply (Vcc/Vdd)	3.6V ~ 50V	Frequency - Switching	1kHz ~ 500kHz
Duty Cycle (Max)	-	Synchronous Rectifier	No
Clock Sync	No	Serial Interfaces	-
Control Features	Frequency Control	Operating Temperature	-20°C ~ 85°C (TA)
Mounting Type	Through Hole	Base Product Number	TL1451

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Ratings and Reviews

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O**a 07/20/2020

Normal, for samsung tv fit.