BQ77205

AKTIV

Ultra-Low-Power-Spannungsschutz für Lithium-Ionen-Akkus der 3er- bis 5er-Serie

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Datenblatt

document-pdfAcrobat BQ77205 Overvoltage Protection for 3-Series to 5-Series Cell Li-Ion Batteries with Internal Delay Timer datasheet (Rev. A) (Englisch) PDF | HTML

BQ77205

AKTIV

Datenblatt

Jetzt bestellen

Produktdetails

Function

Protection

Number of series cells (min)

2, 3, 4, 5

Number of series cells (max)

3, 4, 5

Features

Open wire (OW), Overvoltage, Single pin output drive, Stackable

Rating

Catalog

Vin (max) (V)

30

Operating temperature range (°C)

-40 to 85

Battery overvoltage protection (min) (V)

3.55

Battery overvoltage protection (max) (V)

5.1

Function

Protection

Number of series cells (min)

2, 3, 4, 5

Number of series cells (max)

3, 4, 5

Features

Open wire (OW), Overvoltage, Single pin output drive, Stackable

Rating

Catalog

Vin (max) (V)

30

Operating temperature range (°C)

-40 to 85

Battery overvoltage protection (min) (V)

3.55

Battery overvoltage protection (max) (V)

5.1

VSSOP (DGK)

8

14.7 mm² 3 x 4.9

3-series cell to 5-series cell protection
High-accuracy overvoltage protection
- ±10 mV at 25°C
- ±20 mV from 0°C to 60°C
Overvoltage protection options from 3.55 V to 5.1 V
Open-wire connection detection
Random cell connection
Functional safety-capable
Fixed internal delay timers
Fixed detection thresholds
Fixed output drive type
- Active high or active low
- Active high drive to 6 V
- Open drain with the ability to be pulled up externally to VDD
Low power consumption ICC ≈ 1 µA (VCELL(ALL) < VOV)
Low leakage current per cell input < 100 nA with open wire detection disabled
Package footprint options:
- 8-pin DGK with 0.65-mm lead pitch

3-series cell to 5-series cell protection
High-accuracy overvoltage protection
- ±10 mV at 25°C
- ±20 mV from 0°C to 60°C
Overvoltage protection options from 3.55 V to 5.1 V
Open-wire connection detection
Random cell connection
Functional safety-capable
Fixed internal delay timers
Fixed detection thresholds
Fixed output drive type
- Active high or active low
- Active high drive to 6 V
- Open drain with the ability to be pulled up externally to VDD
Low power consumption ICC ≈ 1 µA (VCELL(ALL) < VOV)
Low leakage current per cell input < 100 nA with open wire detection disabled
Package footprint options:
- 8-pin DGK with 0.65-mm lead pitch

The BQ77205 family of products provides a range of voltage and temperature monitoring, including overvoltage protection (OVP) and open-wire (OW) protection for Li-ion battery pack systems. Each cell is monitored independently for overvoltage and open-wire conditions.

In the BQ77205 device, an internal delay timer is initiated upon detection of an overvoltage or open-wire condition. Upon expiration of the delay timer, the respective output is triggered into its active state (either high or low, depending on the configuration).

The overvoltage triggers the OUT pin if a fault is detected. If an open-wire fault is detected, then the OUT is triggered. For quicker production-line testing, the BQ77205 device provides a Customer Test Mode (CTM) with significantly reduced delay time.

The BQ77205 family of products provides a range of voltage and temperature monitoring, including overvoltage protection (OVP) and open-wire (OW) protection for Li-ion battery pack systems. Each cell is monitored independently for overvoltage and open-wire conditions.

In the BQ77205 device, an internal delay timer is initiated upon detection of an overvoltage or open-wire condition. Upon expiration of the delay timer, the respective output is triggered into its active state (either high or low, depending on the configuration).

The overvoltage triggers the OUT pin if a fault is detected. If an open-wire fault is detected, then the OUT is triggered. For quicker production-line testing, the BQ77205 device provides a Customer Test Mode (CTM) with significantly reduced delay time.

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	Typ	Titel		Datum
*	Data sheet	BQ77205 Overvoltage Protection for 3-Series to 5-Series Cell Li-Ion Batteries with Internal Delay Timer datasheet (Rev. A)	PDF \| HTML	05 Jun 2024

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Evaluierungsplatine

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BQ77205

Ultra-Low-Power-Spannungsschutz für Lithium-Ionen-Akkus der 3er- bis 5er-Serie

BQ77205

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