The TPS57040-Q1 device is a 42-V 0.5-A step-down regulator with an integrated high-side MOSFET. Current mode control provides simple external compensation and flexible component selection. A low-ripple pulse-skip mode reduces the no load, input supply current to 116 µA. Using the enable pin, shutdown supply current is reduced to 1.5 µA, when the enable pin is low.

Undervoltage lockout is internally set at 2.5 V, but can be increased using the enable pin. The output voltage startup ramp is controlled by the slow start pin that can also be configured for sequencing/tracking. An open drain power-good signal indicates the output is within 92% to 109% of its nominal voltage.

A wide switching frequency range allows efficiency and external component size to be optimized. Frequency fold back and thermal shutdown protects the part during an overload condition.

The TPS57040-Q1 is available in a 10-pin thermally enhanced MSOP PowerPAD™ package (DGQ) and a 10-pin SON package (DRC).

• Qualified for Automotive Applications
• AEC-Q100 Qualified With the Following Results
  • Device Temperature Grade 1: –40°C to 125°C Ambient Operating Temperature Range
  • Device HBM ESD Classification Level 2
  • Device CDM ESD Classification Level C4B
• 3.5-V to 42-V Input Voltage Range
• 200-mΩ High-Side MOSFET
• High Efficiency at Light Loads with a Pulse Skipping Eco-mode? Control Scheme
• 116-μA Operating Quiescent Current
• 1.5-μA Shutdown Current
• 100-kHz to 2.5-MHz Switching Frequency
• Synchronizes to External Clock
• Adjustable Slow Start/Sequencing
• Undervoltage and Overvoltage Power-good Output
• Adjustable Undervoltage Lockout Voltage and Hysteresis
• 0.8-V Internal Voltage Reference
• Supported by SwitcherPro? Software Tool (http://focus.ti.com/docs/toolsw/folders/print/switcherpro.html)

• Vin (Min) (V)
• 3.5
• Vin (Max) (V)
• 42
• Vout (Min) (V)
• 0.8
• Vout (Max) (V)
• 39
• Iout (Max) (A)
• 0.5
• Iq (Typ) (uA)
• 116
• Switching frequency (Min) (kHz)
• 100
• Switching frequency (Max) (kHz)
• 2500
• Features
• Enable, Frequency Synchronization, Light Load Efficiency, Power Good, Soft Start Adjustable, UVLO Adjustable
• Rating
• Automotive
• Regulated outputs (#)
• 1
• Control mode
• Current Mode
• Duty cycle (Max) (%)
• 100

TPS57040-Q1的完整型号有：TPS57040QDGQRQ1、TPS57040QDRCRQ1，以下是这些产品的关键参数及官网采购报价：

TPS57040QDGQRQ1，工作温度：-40 to 125，封装：HVSSOP (DGQ)-10，包装数量MPQ：2500个，MSL 等级/回流焊峰值温度：Level-3-260C-168 HR，引脚镀层/焊球材料：NIPDAU，TI官网TPS57040QDGQRQ1的批量USD价格：.911（1000+）

TPS57040QDRCRQ1，工作温度：-40 to 125，封装：VSON (DRC)-10，包装数量MPQ：3000个，MSL 等级/回流焊峰值温度：Level-3-260C-168 HR，引脚镀层/焊球材料：NIPDAU，TI官网TPS57040QDRCRQ1的批量USD价格：.961（1000+）

TPS57040-Q1 Unencrypted PSpice Transient Model Package (Rev. A)

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 (...)

TPS54-57XX0-CALC — 本工具支持 TPS54xx0-Q1 和 TPS57xx0-Q1 系列器件

This worksheet is designed for use with Microsoft Excel 2002 or later. It intends to assist circuit designers in their day-to-day calculations

This worksheet includes two sections:

• Recommendations: Calculates the maximum requirements for different components to guarantee the input voltage, output (...)

PMP10018 — 具有集成 MOSFET 的 3.3V/0.42A 非同步降压转换器参考设计

PMP10018 设计是用于汽车应用的非同步降压转换器。它使用 TPS57040-Q1 提供 3.3V@0.42A 的输出电压。