BQ2205LY Status: ACTIVE

Battery Back-up Supervisor for Dual SRAM Banks

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Datasheet

bq2205LY SRAM Controller (PDF 354 KB)
25 Sep 2003

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

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TPS61040: 28-V, 400-mA Switch Boost Converter in SOT-23 for LCD and White LED Applications

Product Information

Features

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

Description

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.

View All Description in Datasheet

Pricing / Packaging / CAD Design Tools / Samples

			Price	Packaging			CAD Design Tools		Samples
Device	Status	Temp (^oC)	Price \| Quantity	Package \| Pins	Top Side Marking	Package QTY \| Package Carrier	Symbols	Footprints	Samples
BQ2205LYPW	ACTIVE	-20 to 70	1.95 \| 1ku	TSSOP (PW) \| 16	View	90 \| TUBE
BQ2205LYPWG4	ACTIVE	-20 to 70	1.95 \| 1ku	TSSOP (PW) \| 16	View	90 \| TUBE
BQ2205LYPWR	ACTIVE	-20 to 70	1.75 \| 1ku	TSSOP (PW) \| 16	View	2000 \| LARGE T&R	Purchase Samples
BQ2205LYPWRG4	ACTIVE	-20 to 70	1.75 \| 1ku	TSSOP (PW) \| 16	View	2000 \| LARGE T&R	Purchase Samples

* Suggested Resale Price per unit (USD) for BUDGETARY USE ONLY. For higher volume price quotes,prices in local currency or delivery quotes, please contact your local Texas Instruments Sales Office or Authorized Distributor.

Inventory

Reported Distributor Inventory as of 12:15 PM GMT, 20 Nov 2009
Region	Company	In Stock	Purchase
TI Lead Time*: 20 WeeksBQ2205LYPW
None Reported View Distributors
TI Lead Time*: 20 WeeksBQ2205LYPWG4
None Reported View Distributors
TI Lead Time*: 20 WeeksBQ2205LYPWR
None Reported View Distributors
TI Lead Time*: 20 WeeksBQ2205LYPWRG4
None Reported View Distributors
View all Distributors

** Lead time information is not available at this time. However, our information is updated daily so please check back with us soon. Please contact your preferred TI Authorized Distributor for additional information.

Quality & Lead (Pb)-Free Data

	Product Content				DPPM / MTBF / FIT Rate
Device	Eco Plan*	Lead / Ball Finish	MSL Rating / Peak Reflow	Details	Details
BQ2205LYPW	Green (RoHS & no Sb/Br)	CU NIPDAU	Level-1-260C-UNLIM	View	View
BQ2205LYPWG4	Green (RoHS & no Sb/Br)	CU NIPDAU	Level-1-260C-UNLIM	View	View
BQ2205LYPWR	Green (RoHS & no Sb/Br)	CU NIPDAU	Level-1-260C-UNLIM	View	View
BQ2205LYPWRG4	Green (RoHS & no Sb/Br)	CU NIPDAU	Level-1-260C-UNLIM	View	View

* The planned eco-friendly classification: Pb-Free (RoHS) or Pb-Free (RoHS Exempt) or Green (RoHS & no Sb/Br) - please click on the Product Content Details "View" link in the table above for the latest availability information and additional product content details.

If the information you are requesting is not available online at this time, contact one of our Product Information Centers regarding the availability of this information.

Technical Documents

Most useful technical documents for BQ2205LY

Datasheet

bq2205LY SRAM Controller (PDF, 354 KB)
25 Sep 2003

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BQ2205LY Status: ACTIVE

Battery Back-up Supervisor for Dual SRAM Banks

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