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TPS54040-Q1 具有 Eco-Mode 的汽车类 3.5V 至 42V 输入、0.5A 降压 SWIFT(tm) 转换器

TPS54040-Q1 描述

The TPS54040 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, regulated output supply current to 116 µA. Using the enable pin, shutdown supply current is reduced to 1.3 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 93% to 107% of its nominal voltage.

A wide switching frequency range allows efficiency and external component size to be optimized.

	TPS54040	TPS54140	TPS54040-Q1
Iout(Max)(A)	0.5	1.5	2.5
Vin(Min)(V)	3.5	3.5	3.5
Vin(Max)(V)	42	42	42
Vout(Min)(V)	0.8	0.8	0.8
Vout(Max)(V)	39	39	39
Iq(Typ)(mA)	0.116	0.116	0.138
Switching Frequency(Max)(kHz)	2500	2500	2500
Switch Current Limit(Typ)(A)	0.6	1.8	3.5
Topology	Buck, Inverting Buck/Boost	Inverting Buck/Boost	Buck, Inverting Buck/Boost
Operating Temperature Range(°C)	-40 to 150	-40 to 150	-40 to 150
Pin/Package	10MSOP-PowerPAD	10MSOP-PowerPAD	10MSOP-PowerPAD
Rating	Catalog	Catalog	Catalog
Duty Cycle(Max)(%)	98	98	98
Regulated Outputs(#)	1	1	1
Thermal Shutdown	Yes	Yes	Yes

TPS54040-Q1 特性

• Qualified for Automotive Applications
• 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
• 1.3-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
• For SWIFT Documentation, See the TI Website at http://www.ti.com/swift
• APPLICATIONS
  • 12-V and 24-V Industrial and Commercial Low Power Systems
  • Aftermarket Auto Accessories: Video, GPS, Entertainment

TPS54040-Q1 芯片订购指南

器件	状态	温度 (oC)	价格（美元）	封装 | 引脚	封装数量 | 封装载体	丝印标记
TPS54040QDGQRQ1	ACTIVE	-40 to 125	1.55 | 1ku	MSOP-PowerPAD (DGQ) | 10	2500 | LARGE T&R	5404Q
TPS54040QDRCRQ1	ACTIVE	-40 to 125	1.55 | 1ku	SON (DRC) | 10	3000 | LARGE T&R	5404Q

TPS54040-Q1 质量与无铅数据

器件	环保计划*	铅/焊球涂层	MSL 等级/回流焊峰	环保信息与无铅 (Pb-free)	DPPM / MTBF / FIT 率
TPS54040QDGQRQ1	Green (RoHS & no Sb/Br)	CU NIPDAU	Level-2-260C-1 YEAR		TPS54040QDGQRQ1
TPS54040QDRCRQ1	Green (RoHS & no Sb/Br)	CU NIPDAU	Level-2-260C-1 YEAR		TPS54040QDRCRQ1

TPS54040-Q1 应用技术支持与电子电路设计开发资源下载

1. TPS54040-Q1 数据资料 dataSheet 下载.PDF
2. TI 德州仪器非隔离式开关 DC/DC 调节器选型与价格参考 . xls
3. Dual MOSFET Driver (PDF  498 KB)
4. 全面认识开关型电源中的BUCK-BOOST功率级 (Rev. A)   (PDF  2206 KB)
5. Understanding Boost Power Stages In Switchmode Power Supplies   (PDF  149 KB)
6. Understanding Buck Power Stages In Switchmode Power Supplies   (PDF  173 KB)
7. 标准线性产品交叉参考 (Rev. D)   (PDF  1058 KB)
8. 模数规格和性能特性术语表 (Rev. A) (PDF 1993 KB)
9. 所选封装材料的热学和电学性质 (PDF 645 KB)
10. 高速数据转换 (PDF 1967 KB)