BQ7790508PWR

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Texas Instruments

3- TO 5-SERIES LI-ION AND LI-PHOSPHATE ULTRA-LOW-POWER STACKABLE BATTERY PROTECTOR

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Documentsbq77905 3-5S Low-Power Protector Evaluation Module (Rev. A)bq77905 Shutdown for Current Reduction +8

BQ7790508PWR

Active

Texas Instruments

3- TO 5-SERIES LI-ION AND LI-PHOSPHATE ULTRA-LOW-POWER STACKABLE BATTERY PROTECTOR

Deep-Dive with AI

Documentsbq77905 3-5S Low-Power Protector Evaluation Module (Rev. A)bq77905 Shutdown for Current Reduction +8

Specifications Pricing Series Description Documents

Technical Specifications

Parameters and characteristics commom to parts in this series

Specification	BQ7790508PWR	BQ7790508 Series

Battery Chemistry	Lithium Ion	Lithium Ion
Fault Protection	Over Temperature, Over/Under Voltage, Over Current, Short Circuit	Over Temperature, Over/Under Voltage, Over Current, Short Circuit
Function	Battery Protection	Battery Protection
Mounting Type	Surface Mount	Surface Mount
Number of Cells [Max]	5	5
Number of Cells [Min]	3	3
Operating Temperature [Max]	85 °C	85 °C
Operating Temperature [Min]	-40 °C	-40 °C
Package / Case	0.173 in	0.173 in
Package / Case	4.4 mm	4.4 mm
Package / Case	20-TSSOP	20-TSSOP
Supplier Device Package	20-TSSOP	20-TSSOP

Pricing

Prices provided here are for design reference only. For realtime values and availability, please visit the distributors directly

Distributor	Package	Quantity	$

Digikey	Cut Tape (CT)	1	$ 1.10
		10	$ 0.98
		25	$ 0.93
		100	$ 0.77
		250	$ 0.72
		500	$ 0.63
		1000	$ 0.50
	Digi-Reel®	1	$ 1.10
		10	$ 0.98
		25	$ 0.93
		100	$ 0.77
		250	$ 0.72
		500	$ 0.63
		1000	$ 0.50
	Tape & Reel (TR)	2000	$ 0.41
Texas Instruments	LARGE T&R	1	$ 0.81
		100	$ 0.63
		250	$ 0.46
		1000	$ 0.33

BQ7790508 Series

3- to 5-series li-ion and li-phosphate ultra-low-power stackable battery protector

Part	Mounting Type	Package / Case	Package / Case	Package / Case	Battery Chemistry	Supplier Device Package	Function	Fault Protection	Number of Cells [Max]	Number of Cells [Min]	Operating Temperature [Max]	Operating Temperature [Min]
Texas Instruments BQ7790508PWR	Surface Mount	0.173 in	4.4 mm	20-TSSOP	Lithium Ion	20-TSSOP	Battery Protection	Over Current, Over Temperature, Over/Under Voltage, Short Circuit	5	3	85 °C	-40 °C
Texas Instruments BQ7790508PW	Surface Mount	0.173 in	4.4 mm	20-TSSOP	Lithium Ion	20-TSSOP	Battery Protection	Over Current, Over Temperature, Over/Under Voltage, Short Circuit	5	3	85 °C	-40 °C

Description

General part information

BQ7790508 Series

The BQ77904 and BQ77905 devices are low-power battery pack protectors that implement a suite of voltage, current, and temperature protections without microcontroller (MCU) control. The device’s stackable interface provides simple scaling to support battery cell applications from 3 series to 20 series or more. Protection thresholds and delays are factory-programmed and available in a variety of configurations. Separate overtemperature and undertemperature thresholds for discharge (OTD and UTD) and charge (OTC and UTC) are provided for added flexibility.

The device achieves pack protection through the integrated independent CHG and DSG low-side NMOS FET drivers, which may be disabled through two control pins. These control pins may also be used to achieve cell protection solutions for higher series (6 series and beyond) in a simple and economical manner. To do this, simply cascade a higher device CHG and DSG outputs to the immediate lower device control pins. For a reduced component count, all protection faults use internal delay timers.