TPS3620-50 用于 RAM 保持的 3.3V 电池备份监控器

TPS3620-50 描述

The TPS3619 and TPS3620 families of supervisory circuits monitor and control processor activity by providing backup-battery switchover for data retention of CMOS RAM. During power on, RESET is asserted when the supply voltage (VDD or VBAT) becomes higher than 1.1 V. Thereafter, the supply voltage supervisor monitors VDD and keeps RESET output 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 starts after VDD has risen above VIT. When the supply voltage drops below VIT, the output becomes active (low) again. The product spectrum is designed for supply voltages of 3.3 V and 5 V

	TPS3619-33	TPS3619-50	TPS3620-33	TPS3620-50
No. of Supervisors	1	1	1	1
Vit1(Typ)(V)	2.93	4.55	2.93	4.55
Reset Threshold Accuracy(%)	2	2	2	2
Time Delay(ms)	100	100	100	100
IDD(Typ)(uA)	15	15	15	15
Pin/Package	8MSOP	8MSOP	8MSOP	8MSOP
Rating	Catalog	Catalog	Catalog	Catalog

TPS3620-50 特性

Supply Current of 40 uA (Max)
Battery-Supply Current of 100 nA (Max)
Precision Supply Voltage Monitor 3.3 V, 5 V, Other Options on Request
Backup-Battery Voltage Can Exceed VDD
Power On Reset Generator With Fixed 100-ms Reset Delay Time
Voltage Monitor For Power-Fail or Low-Battery Monitoring
Battery Freshness Seal (TPS3619)
Pin-For-Pin Compatible With MAX819, MAX703, and MAX704
8-Pin MSOP Package
Temperature Range –40°C to +85°C
APPLICATIONS
- Fax Machines
- Set-Top Boxes
- Advanced Voice Mail Systems
- Portable Battery-Powered Equipment
- Computer Equipment
- Advanced Modems
- Automotive Systems
- Portable Long-Time Monitoring Equipment
- Point-of-Sale Equipment

TPS3620-50 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
TPS3620-50DGK	ACTIVE	-40 to 85	1.30 \| 1ku	MSOP (DGK) \| 8	80 \| TUBE	ASD
TPS3620-50DGKG4	ACTIVE	-40 to 85	1.30 \| 1ku	MSOP (DGK) \| 8	80 \| TUBE	ASD
TPS3620-50DGKR	ACTIVE	-40 to 85	1.10 \| 1ku	MSOP (DGK) \| 8	2500 \| LARGE T&R	ASD
TPS3620-50DGKRG4	ACTIVE	-40 to 85	1.10 \| 1ku	MSOP (DGK) \| 8	2500 \| LARGE T&R	ASD

TPS3620-50 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
TPS3620-50DGK	Green (RoHS & no Sb/Br)	CU NIPDAU	Level-1-260C-UNLIM	TPS3620-50DGK	TPS3620-50DGK
TPS3620-50DGKG4	Green (RoHS & no Sb/Br)	CU NIPDAU	Level-1-260C-UNLIM	TPS3620-50DGKG4	TPS3620-50DGKG4
TPS3620-50DGKR	Green (RoHS & no Sb/Br)	CU NIPDAU	Level-1-260C-UNLIM	TPS3620-50DGKR	TPS3620-50DGKR
TPS3620-50DGKRG4	Green (RoHS & no Sb/Br)	CU NIPDAU	Level-1-260C-UNLIM	TPS3620-50DGKRG4	TPS3620-50DGKRG4