Texas Instruments TL1451A-Q1 Data Sheet
Summary
The TL1451A is a specialized monolithic chip designed for robust power-supply control, integrating two complete Pulse-Width Modulation (PWM) circuits into one unit. This manual details its technical capabilities, including on-chip 2.5V regulation, error amplification, and adjustable dead-time comparators. Featuring undervoltage lockout and wide operating voltage ranges, the TL1451AQ-Q1 is engineered for mission-critical applications, making it an ideal choice for automotive systems that require high reliability and AEC-Q100 qualification (-40°C to 125°C).
Page 1 Text Content
查询TL1451A-Q1供应商
SGLS304 − JUNE 2005
Qualification in Accordance With PW PACKAGE (TOP VIEW)
AEC-Q100(1) Qualified for Automotive Applications
CT REF
Customer-Specific Configuration Control
RT SCP
Can Be Supported Along With
ERROR 1IN+ 2IN+ ERROR
Major-Change Approval
AMPLIFIER 1 1IN− 2IN− AMPLIFIER 2
Complete PWM Power Control Circuitry
1FEEDBACK 2FEEDBACK
Completely Synchronized Operation 1DTC 2DTC
Internal Undervoltage Lockout Protection 1OUT 2OUT GND VCC
Wide Supply Voltage Range Internal Short-Circuit Protection Oscillator Frequency 500 k Hz Max Variable Dead Time Provides Control Over Total Range Internal Regulator Provides a Stable 2.5-V Reference Supply Available in Q-Temp Automotive High Rel Automotive Applications Configuration Control / Print Support Qualification to Automotive Standards NOTE 1: Contact Texas Instruments for details. Q100 qualification data available on request.
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 VCC conditions, the undervoltage lockout control circuit feature locks the outputs off until the internal circuitry is operational. The TL1451AQ−Q1 is characterized for operation from −40°C to 125°C.
AVAILABLE OPTIONS
PACKAGED DEVICES
TA TSSOP
−40°C to 125°C TL1451AQPWRQ1
The PW package is only available left-end taped and reeled.
Please be aware that an important notice concerning availability, standard warranty, and use in critical applications of Texas Instruments semiconductor products and disclaimers thereto appears at the end of this data sheet.
1www.ti.com
Page Summary Contents For Texas Instruments TL1451A-Q1 Data Sheet
Manual Details
| Brand | Texas Instruments |
|---|---|
| Pages | 22 |
| File Size | 319.43 KB |
| Published | July 15, 2026 |
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Frequently Asked Questions
What range of dead time can I set for the DTC comparator?
The DTC comparator supports an adjustable dead time ranging from 0% to 100%.
Does the device provide protection during low voltage conditions?
Yes, the Undervoltage Lockout (UVLO) circuit locks the outputs off until the internal circuitry is fully operational.
What is the operating temperature range for the TL1451AQ-Q1 variant?
It is characterized for operation from -40°C to 125°C and is qualified for automotive applications.