BQ2000T

AKTIV

Switchmode-Batterielader für mehrere chemische Zusammensetzungen mit dT/dt-Terminierung

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Datenblatt

document-pdfAcrobat Programmable Multi-Chemistry Fast-Charge Management IC* datasheet (Rev. D) (Englisch)

BQ2000T

AKTIV

Datenblatt

Jetzt bestellen

Produktdetails

Number of series cells

1, 2, 3, 4

Charge current (max) (A)

2

Vin (max) (V)

6

Cell chemistry

Li-Ion/Li-Polymer, NiCd, NiMH

Battery charge voltage (min) (V)

0

Battery charge voltage (max) (V)

6

Absolute max Vin (max) (V)

7

Control topology

Switch-Mode Buck

Control interface

Standalone (RC-Settable)

Features

BAT temp thermistor monitoring (hot/cold profile)

Vin (min) (V)

4

Rating

Catalog

Operating temperature range (°C)

-20 to 70

Number of series cells

1, 2, 3, 4

Charge current (max) (A)

2

Vin (max) (V)

6

Cell chemistry

Li-Ion/Li-Polymer, NiCd, NiMH

Battery charge voltage (min) (V)

0

Battery charge voltage (max) (V)

6

Absolute max Vin (max) (V)

7

Control topology

Switch-Mode Buck

Control interface

Standalone (RC-Settable)

Features

BAT temp thermistor monitoring (hot/cold profile)

Vin (min) (V)

4

Rating

Catalog

Operating temperature range (°C)

-20 to 70

PDIP (P)

8

92.5083 mm² 9.81 x 9.43

SOIC (D)

8

29.4 mm² 4.9 x 6

TSSOP (PW)

8

19.2 mm² 3 x 6.4

Safe Management of Fast Charge for NiCd, NiMH, or Li-Ion Battery Packs
High-Frequency Switching Controller for Efficient and Simple Charger Design
Pre-Charge Qualification for Detecting Shorted, Damaged, or Overheated Cells
Fast-Charge Termination by ΔT/Δt for Nickel Chemistries, Minimum Current for Li-Ion Chemistries, Maximum Temperature, and Maximum Charge Time
Selectable Top-Off Mode for Achieving Maximum Capacity in NiMH Batteries
Programmable Trickle-Charge Mode for Reviving Deeply Discharged Batteries and for Postcharge Maintenance
Built-in Battery Removal and Insertion Detection
Sleep Mode for Low Power Consumption
APPLICATIONS
- Multi-Chemistry Charger
- Nickel Charger
- High-Power, Multi-Cell Charger

Safe Management of Fast Charge for NiCd, NiMH, or Li-Ion Battery Packs
High-Frequency Switching Controller for Efficient and Simple Charger Design
Pre-Charge Qualification for Detecting Shorted, Damaged, or Overheated Cells
Fast-Charge Termination by ΔT/Δt for Nickel Chemistries, Minimum Current for Li-Ion Chemistries, Maximum Temperature, and Maximum Charge Time
Selectable Top-Off Mode for Achieving Maximum Capacity in NiMH Batteries
Programmable Trickle-Charge Mode for Reviving Deeply Discharged Batteries and for Postcharge Maintenance
Built-in Battery Removal and Insertion Detection
Sleep Mode for Low Power Consumption
APPLICATIONS
- Multi-Chemistry Charger
- Nickel Charger
- High-Power, Multi-Cell Charger

The bq2000T is a programmable, monolithic IC for fast-charge management of nickel cadmium (NiCd), nickel metal-hydride (NiMH), or lithium-ion (Li-Ion) batteries in single- or multi-chemistry applications. The bq2000T chooses the proper battery chemistry (either nickel or lithium) and proceeds with the optimal charging and termination algorithms. This process eliminates undesirable, undercharged, or overcharged conditions, and allows accurate and safe termination of fast charge.

Depending on the chemistry, the bq2000T provides a number of charge termination criteria:

Rate of temperature rise (ΔT/Δt) (for NiCd and NiMH)
Minimum charge current (for Li-Ion)
Maximum temperature
Maximum charge time

For safety, the bq2000T inhibits fast charge until the battery voltage and temperature are within user-defined limits. If the battery voltage is below the low-voltage threshold, the bq2000T uses trickle-charge to condition the battery. For NiMH batteries, the bq2000T provides an optional top-off charge to maximize the battery capacity.

The integrated high-speed comparator allows the bq2000T to be the basis for a complete, high-efficiency battery charger circuit for both nickel-based and lithium-based chemistries.

The bq2000T is a programmable, monolithic IC for fast-charge management of nickel cadmium (NiCd), nickel metal-hydride (NiMH), or lithium-ion (Li-Ion) batteries in single- or multi-chemistry applications. The bq2000T chooses the proper battery chemistry (either nickel or lithium) and proceeds with the optimal charging and termination algorithms. This process eliminates undesirable, undercharged, or overcharged conditions, and allows accurate and safe termination of fast charge.

Depending on the chemistry, the bq2000T provides a number of charge termination criteria:

Rate of temperature rise (ΔT/Δt) (for NiCd and NiMH)
Minimum charge current (for Li-Ion)
Maximum temperature
Maximum charge time

For safety, the bq2000T inhibits fast charge until the battery voltage and temperature are within user-defined limits. If the battery voltage is below the low-voltage threshold, the bq2000T uses trickle-charge to condition the battery. For NiMH batteries, the bq2000T provides an optional top-off charge to maximize the battery capacity.

The integrated high-speed comparator allows the bq2000T to be the basis for a complete, high-efficiency battery charger circuit for both nickel-based and lithium-based chemistries.

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	Typ	Titel		Datum
*	Data sheet	Programmable Multi-Chemistry Fast-Charge Management IC* datasheet (Rev. D)		14 Jan 2010

BQ2000T

Switchmode-Batterielader für mehrere chemische Zusammensetzungen mit dT/dt-Terminierung

BQ2000T

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