TPS3705-50 具有电源故障检测功能的处理器监控电路

TPS3705-50 描述

The TPS3705, TPS3707 family of microprocessor supply-voltage supervisors provide circuit initialization and timing supervision, primarily for DSP and processor-based systems. During power-on, RESET\ is asserted when the supply voltage VDD becomes higher than 1.1 V. Thereafter, the supply voltage supervisor monitors VDD and keeps RESET\ active as long as VDD remains below the threshold voltage VIT+. An internal timer delays the return of the output to the inactive state (high) to ensure proper system reset. The delay time, tdtyp = 200 ms, starts after VDD has risen above the threshold voltage VIT+. When the supply voltage drops below the threshold voltage VIT–, the output becomes active (low) again. No external components are required.

	TPS3705-30	TPS3705-33	TPS3705-50	TPS3707-25	TPS3707-30	TPS3707-33	TPS3707-50
No. of Supervisors	2	2	2	2	2	2	2
Vit1(Typ)(V)	2.63	2.93	4.55	2.25	2.63	2.93	4.55
Vit2(Typ)(V)	Adj	Adj	Adj	Adj	Adj	Adj	Adj
Reset Threshold Accuracy(%)	2.1	1.9	2	2.2	2.1	1.9	2
Time Delay(ms)	200	200	200	200	200	200	200
IDD(Typ)(uA)	30	30	30	20	20	20	20
Pin/Package	8MSOP-PowerPAD, 8SOIC	8MSOP-PowerPAD, 8SOIC	8MSOP-PowerPAD, 8SOIC	8MSOP-PowerPAD, 8SOIC	8MSOP-PowerPAD, 8SOIC	8MSOP-PowerPAD, 8SOIC	8MSOP-PowerPAD, 8SOIC
Rating	Catalog	Catalog	Catalog	Catalog	Catalog	Catalog	Catalog

TPS3705-50 特性

Power-On Reset Generator with Fixed Delay Time of 200 ms, no External Capacitor Needed
Precision Supply Voltage Monitor 2.5 V, 3 V, 3.3 V, and 5 V
Pin-For-Pin Compatible with the MAX705 through MAX708 Series
Integrated Watchdog Timer (TPS3705 only)
Voltage Monitor for Power-Fail or Low-Battery Warning
Maximum Supply Current of 50 µA
MSOP-8 and SO-8 Packages
Temperature Range . . . –40°C to 85°C

typical applications

Designs Using DSPs, Microcontrollers or Microprocessors
Industrial Equipment
Programmable Controls
Automotive Systems
Portable/Battery Powered Equipment
Intelligent Instruments
Wireless Communication Systems
Notebook/Desktop Computers

TPS3705-50 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
TPS3705-50D	ACTIVE	-40 to 85	1.00 \| 1ku	SOIC (D) \| 8	75 \| TUBE	70550
TPS3705-50DG4	ACTIVE	-40 to 85	1.00 \| 1ku	SOIC (D) \| 8	75 \| TUBE	70550
TPS3705-50DGN	ACTIVE	-40 to 85	0.85 \| 1ku	MSOP-PowerPAD (DGN) \| 8	80 \| TUBE	AAT
TPS3705-50DGNG4	ACTIVE	-40 to 85	0.85 \| 1ku	MSOP-PowerPAD (DGN) \| 8	80 \| TUBE	AAT
TPS3705-50DR	ACTIVE	-40 to 85	0.85 \| 1ku	SOIC (D) \| 8	2500 \| LARGE T&R	70550
TPS3705-50DRG4	ACTIVE	-40 to 85	0.85 \| 1ku	SOIC (D) \| 8	2500 \| LARGE T&R	70550

TPS3705-50 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
TPS3705-50D	Green (RoHS & no Sb/Br)	CU NIPDAU	Level-1-260C-UNLIM	TPS3705-50D	TPS3705-50D
TPS3705-50DG4	Green (RoHS & no Sb/Br)	CU NIPDAU	Level-1-260C-UNLIM	TPS3705-50DG4	TPS3705-50DG4
TPS3705-50DGN	Green (RoHS & no Sb/Br)	CU NIPDAU	Level-1-260C-UNLIM	TPS3705-50DGN	TPS3705-50DGK
TPS3705-50DGNG4	Green (RoHS & no Sb/Br)	CU NIPDAU	Level-1-260C-UNLIM	TPS3705-50DGNG4	TPS3705-50DGKG4
TPS3705-50DR	Green (RoHS & no Sb/Br)	CU NIPDAU	Level-1-260C-UNLIM	TPS3705-50DR	TPS3705-50DGKR
TPS3705-50DRG4	Green (RoHS & no Sb/Br)	CU NIPDAU	Level-1-260C-UNLIM	TPS3705-50DRG4	TPS3705-50DGKRG4