BQ77PL900 Status: ACTIVE

5-10 cell Li-ion Battery protection & AFE

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Datasheet

5-10 cell Li-ion Battery protection & AFE (Rev. B) (PDF 900 KB)
03 Dec 2008

	BQ77PL900
Cells Protected	5,6,7,8,9,10
Overvoltage Threshold(V)	4.5
Protection FETs	External
Pin/Package	48SSOP
Approx. Price (US$)	2.95 \| 1ku
	Samples
	Inventory

Customers Who Evaluated This Product Also Evaluated

BQ29330: Two, Three and Four Cell Lithium or Lithium-Polymer Battery Protection AFE
BQ29419: Voltage Protection for 2, 3, or 4 Cell Li-Ion Batteries
BQ29312A: Two, Three and Four Cell Lithium or Lithium-Polymer Battery Protection AFE
BQ78PL114: PowerLAN Gateway Battery Management Controller with PowerPump Cell Balancing
BQ76PL102: PowerLAN Dual-Cell Li-Ion Battery Monitor with PowerPump Cell Balancing
TL431A: Adjustable Precision Shunt Regulator

Product Information

Features

5, 6, 7, 8, 9, or 10 Series-Cell Primary Protection
PMOS FET Drive for Charge and Discharge FETs
Capable of Operation with 1-m Sense Resistor
Supply Voltage Range from 7 V to 50 V
Low Supply Current of 450 µA Typical
Integrated 5 V 25-mA LDO
Integrated 3.3 V 25-mA LDO
Stand-Alone Mode
- Pack Protection Control and Recovery
- Individual Cell Monitoring
- Integrated Cell Balancing
- Programmable Threshold and Delay Time for OvervoltageUndervoltage Overcurrent in Discharge Short Circuit in Discharge
- Fixed Overtemperature Protection
Host Control Mode
- I²C Interface to Host Controller
- Analog Interface for Host Cell Measurement and System Charge/Discharge Current
- Host-Controlled Protection Recovery
- Host-Controlled Cell Balancing
APPLICATIONS
- Cordless Power Tools

View All Features in Datasheet

Description

The bq77PL900 is a five to ten series cell lithium-ion battery pack protector. The integrated I²C communications interface allows the bq77PL900 also to be as an analog front end (AFE) for a Host controller. Two LDOs, one 5 V/25 mA and one 3.3 V/25 mA, are also included and may be used to power a host controller or support circuitry.

The bq77PL900 integrates a voltage translation system to extract battery parameters such as individual cell voltages and charge/discharge current. Variables such as voltage protection thresholds and detection delay times can be programmed by using the internal EEPROM.

The bq77PL900 can act as a stand-alone self-contained battery protection system (stand-alone mode). It can alternatively be combined with a host microcontroller to offer fuel gauge or other battery management capabilities to the host system (host-control mode).

View All Description in Datasheet

Pricing / Packaging / CAD Design Tools / Samples

			Price	Packaging			Samples
Device	Status	Temp (^oC)	Price \| Quantity	Package \| Pins	Top Side Marking	Package QTY \| Package Carrier	Samples
BQ77PL900DL	ACTIVE	-40 to 100	3.25 \| 1ku	SSOP (DL) \| 48	View	25 \| TUBE	Purchase Samples
BQ77PL900DLG4	ACTIVE	-40 to 100	3.25 \| 1ku	SSOP (DL) \| 48	View	25 \| TUBE	Purchase Samples
BQ77PL900DLR	ACTIVE	-40 to 100	2.95 \| 1ku	SSOP (DL) \| 48	View	1000 \| LARGE T&R
BQ77PL900DLRG4	ACTIVE	-40 to 100	2.95 \| 1ku	SSOP (DL) \| 48	View	1000 \| LARGE T&R

* 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 12:11 PM GMT, 22 Nov 2009
Region	Company	In Stock	Purchase
TI Lead Time*: 20 WeeksBQ77PL900DL
None Reported View Distributors
TI Lead Time*: 20 WeeksBQ77PL900DLG4
None Reported View Distributors
TI Lead Time*: 20 WeeksBQ77PL900DLR
None Reported View Distributors
TI Lead Time*: 20 WeeksBQ77PL900DLRG4
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
BQ77PL900DL	Green (RoHS & no Sb/Br)	CU NIPDAU	Level-2-260C-1 YEAR	View	View
BQ77PL900DLG4	Green (RoHS & no Sb/Br)	CU NIPDAU	Level-2-260C-1 YEAR	View	View
BQ77PL900DLR	Green (RoHS & no Sb/Br)	CU NIPDAU	Level-2-260C-1 YEAR	View	View
BQ77PL900DLRG4	Green (RoHS & no Sb/Br)	CU NIPDAU	Level-2-260C-1 YEAR	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 BQ77PL900

Datasheet

5-10 cell Li-ion Battery protection & AFE (Rev. B) (PDF, 900 KB)
03 Dec 2008

Application Notes

Cell Balancing with the bq77PL900 (HTM, 8 KB) 1313 views
03 Jul 2008 Read Abstract
Cell balancing buys extra run time and battery life (PDF, 575 KB) 1684 views
11 Mar 2009
Q1 2009 Issue Analog Applications Journal (PDF, 1426 KB) 5050 views
11 Mar 2009

User Guides

bq77PL900EVM-001 (PDF, 1756 KB) 2034 views
30 Jul 2008

Tools & Software

Name	Part #	Company	Tool / Software Type
BQ77PL900 Evaluation Module	BQ77PL900EVM-001	Texas Instruments	Development Boards/EVMs
bq77PL900 EVSW Install v1p0p0(ZIP 4254 KB ) 629 views 16 Jul 2008

Customers Who Evaluated This Product Also Evaluated...
Part #	Name	Product Family	Comments
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BQ29419	Voltage Protection for 2, 3, or 4 Cell Li-Ion Batteries	BATTERY MANAGEMENT-LITHIUM ION PROTECTION	TI customers also evaluated this product.
BQ29312A	Two, Three and Four Cell Lithium or Lithium-Polymer Battery Protection AFE	BATTERY MANAGEMENT-LITHIUM ION PROTECTION	TI customers also evaluated this product.
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All End-Equipment

BQ77PL900 Status: ACTIVE

5-10 cell Li-ion Battery protection & AFE

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Datasheet

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