BQ2205LY 用于双 SRAM 内存组的电池备份监控器

	BQ2205LY
No. of Supervisors	1
Vit1(Typ)(V)	2.9
Reset Threshold Accuracy(%)	1.7
IDD(Typ)(uA)	210
Pin/Package	16TSSOP
Rating	Catalog

BQ2205LY 描述

The CMOS bq2205 SRAM non-volatile controller with reset provides all the necessary functions for converting one or two banks of standard CMOS SRAM into non-volatile read/write memory. A precision comparator monitors the 3.3-V VCC input for an out-of-tolerance condition. When out-of-tolerance is detected, the two conditioned chip-enable outputs are forced inactive to write-protect both banks of SRAM. Power for the external SRAMs, VOUT, is switched from the VCC supply to the battery-backup supply as VCC decays. On a subsequent power-up, the VOUT supply is automatically switched from the backup supply to the VCC supply. The external SRAMs are write-protected until a power-valid condition exists. The reset output provides power-fail and power-on resets for the system

BQ2205LY 特性

Power Monitoring and Switching for Non-Volatile Control of SRAMs
Input Decoder Allows Control of 1 or 2 Banks of SRAM
Write-Protect Control
3-V Primary Cell Input
3.3-V Operation
Reset Output for System Power-On Reset
Less than 20-ns Chip Enable Propagation Delay
Small 16-Lead TSSOP Package
APPLICATIONS
- NVSRAM Modules
- Point-of-Sale Systems
- Facsimile, Printers and Photocopiers
- Internet Appliances
- Servers
- Medical Instrumentation and Industrial Products

BQ2205LY 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
BQ2205LYPW	ACTIVE	-20 to 70	2.10 \| 1ku	TSSOP (PW) \| 16	90 \| TUBE	2205Y
BQ2205LYPWG4	ACTIVE	-20 to 70	2.10 \| 1ku	TSSOP (PW) \| 16	90 \| TUBE	2205Y
BQ2205LYPWR	ACTIVE	-20 to 70	1.75 \| 1ku	TSSOP (PW) \| 16	2000 \| LARGE T&R	2205Y
BQ2205LYPWRG4	ACTIVE	-20 to 70	1.75 \| 1ku	TSSOP (PW) \| 16	2000 \| LARGE T&R	2205Y

BQ2205LY 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
BQ2205LYPW	Green (RoHS & no Sb/Br)	CU NIPDAU	Level-1-260C-UNLIM	BQ2205LYPW	BQ2205LYPW
BQ2205LYPWG4	Green (RoHS & no Sb/Br)	CU NIPDAU	Level-1-260C-UNLIM	BQ2205LYPWG4	BQ2205LYPWG4
BQ2205LYPWR	Green (RoHS & no Sb/Br)	CU NIPDAU	Level-1-260C-UNLIM	BQ2205LYPWR	BQ2205LYPWR
BQ2205LYPWRG4	Green (RoHS & no Sb/Br)	CU NIPDAU	Level-1-260C-UNLIM	BQ2205LYPWRG4	BQ2205LYPWRG4