Specification	BQ7790500PWR

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

BQ7790508 Series

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

Part	Fault Protection	Battery Chemistry	Package / Case [y]	Package / Case	Package / Case [x]	Number of Cells [Max]	Number of Cells [Min]	Operating Temperature [Max]	Operating Temperature [Min]	Function	Supplier Device Package	Mounting Type	Type	Supplied Contents	Utilized IC / Part	Primary Attributes
Texas Instruments BQ7790508PW	Over Current Over Temperature Over/Under Voltage Short Circuit	Lithium Ion	4.4 mm	20-TSSOP	0.173 in	5	3	85 °C	-40 °C	Battery Protection	20-TSSOP	Surface Mount
Texas Instruments BQ7790503PWR	Over Current Over Temperature Over/Under Voltage Short Circuit	Lithium Ion	4.4 mm	20-TSSOP	0.173 in	5	3	85 °C	-40 °C	Battery Protection	20-TSSOP	Surface Mount
Texas Instruments BQ7790505PW	Over Current Over Temperature Over/Under Voltage Short Circuit	Lithium Ion	4.4 mm	20-TSSOP	0.173 in	5	3	85 °C	-40 °C	Battery Protection	20-TSSOP	Surface Mount
Texas Instruments BQ7790502PW	Over Current Over Temperature Over/Under Voltage Short Circuit	Lithium Ion	4.4 mm	20-TSSOP	0.173 in	5	3	85 °C	-40 °C	Battery Protection	20-TSSOP	Surface Mount
Texas Instruments BQ7790502PWR	Over Current Over Temperature Over/Under Voltage Short Circuit	Lithium Ion	4.4 mm	20-TSSOP	0.173 in	5	3	85 °C	-40 °C	Battery Protection	20-TSSOP	Surface Mount
Texas Instruments BQ7790500PWR	Over Current Over Temperature Over/Under Voltage Short Circuit	Lithium Ion	4.4 mm	20-TSSOP	0.173 in	5	3	85 °C	-40 °C	Battery Protection	20-TSSOP	Surface Mount
Texas Instruments BQ7790500PW	Over Current Over Temperature Over/Under Voltage Short Circuit	Lithium Ion	4.4 mm	20-TSSOP	0.173 in	5	3	85 °C	-40 °C	Battery Protection	20-TSSOP	Surface Mount
Texas Instruments BQ77905EVM-707										Battery Monitor			Power Management	Board(s)	BQ77905	Battery Protection

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	$ 1.64
		10	$ 1.46
		25	$ 1.39
		100	$ 1.14
		250	$ 1.07
		500	$ 0.94
		1000	$ 0.74
	Digi-Reel®	1	$ 1.64
		10	$ 1.46
		25	$ 1.39
		100	$ 1.14
		250	$ 1.07
		500	$ 0.94
		1000	$ 0.74
	Tape & Reel (TR)	2000	$ 0.69
		4000	$ 0.65
		6000	$ 0.63
		10000	$ 0.61
		14000	$ 0.59
Texas Instruments	LARGE T&R	1	$ 1.15
		100	$ 0.89
		250	$ 0.65
		1000	$ 0.47

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.