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 TL1451AQ-Q1 is characterized for operation from -40°C to 125°C.

• Qualified for Automotive Applications
• 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

• Vin (Min) (V)
• 3.6
• Vin (Max) (V)
• 50
• Vout (Min) (V)
• 1
• Regulated outputs (#)
• 2
• Switching frequency (Min) (kHz)
• 50
• Switching frequency (Max) (kHz)
• 500
• Iq (Typ) (mA)
• 1.7
• Features
• Synchronous Rectification
• Duty cycle (Max) (%)
• 100
• Rating
• Automotive

TL1451A-Q1的完整型号有：TL1451AQPWRG4Q1、TL1451AQPWRQ1，以下是这些产品的关键参数及官网采购报价：

TL1451AQPWRG4Q1，工作温度：-40 to 125，封装：TSSOP (PW)-16，包装数量MPQ：2000个，MSL 等级/回流焊峰值温度：Level-1-260C-UNLIM，引脚镀层/焊球材料：NIPDAU，TI官网TL1451AQPWRG4Q1的批量USD价格：.838（1000+）

TL1451AQPWRQ1，工作温度：-40 to 125，封装：TSSOP (PW)-16，包装数量MPQ：2000个，MSL 等级/回流焊峰值温度：Level-1-260C-UNLIM，引脚镀层/焊球材料：NIPDAU，TI官网TL1451AQPWRQ1的批量USD价格：.75（1000+）

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PSpice for TI 可提供帮助评估模拟电路功能的设计和仿真环境。此功能齐全的设计和仿真套件使用 Cadence 的模拟分析引擎。PSpice for TI 可免费使用，包括业内超大的模型库之一，涵盖我们的模拟和电源产品系列以及精选的模拟行为模型。

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在?PSpice for TI 设计和仿真工具中，您可以搜索 TI (...)

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该工具可帮助电源工程师基于规格选择正确的隔离式直流-直流拓扑。根据所选择的拓扑，计算器还会针对设计建议正确的 IC。