OVER VOLTAGE AND UNDER VOLTAGE THRESHOLD IS 3.9 AND 2V
Adjustable Threshold:
NO
Analog IC - Other Type:
BATTERY MONITOR/PROTECTOR
Input Voltage-Max:
25 V
JESD-30 Code:
R-PDSO-G20
JESD-609 Code:
e4
Length:
6.5 mm
Moisture Sensitivity Level:
2
Number of Channels:
5
Number of Functions:
1
Number of Terminals:
20
Operating Temperature-Max:
85 °C
Operating Temperature-Min:
-40 °C
Package Body Material:
PLASTIC/EPOXY
Package Code:
TSSOP
Package Shape:
RECTANGULAR
Package Style:
SMALL OUTLINE, THIN PROFILE, SHRINK PITCH
Peak Reflow Temperature (Cel):
260
Seated Height-Max:
1.2 mm
Supply Voltage-Max (Vsup):
25 V
Supply Voltage-Min (Vsup):
3 V
Supply Voltage-Nom (Vsup):
20 V
Surface Mount:
YES
Temperature Grade:
INDUSTRIAL
Terminal Finish:
Nickel/Palladium/Gold (Ni/Pd/Au)
Terminal Form:
GULL WING
Terminal Pitch:
0.65 mm
Terminal Position:
DUAL
Threshold Voltage-Nom:
+3.9,2V
Time@Peak Reflow Temperature-Max (s):
30
Width:
4.4 mm
BQ7790508PW Frequently Asked Questions (FAQs)
Texas Instruments provides a recommended PCB layout in the datasheet, but it's essential to follow good design practices, such as keeping the sense lines short and away from noise sources, using a solid ground plane, and placing the device close to the battery.
Calibration is done through the I2C interface using the bq77905 Control and Calibration Guide. The process involves setting the design capacity, chemistry, and other parameters to match the specific battery characteristics.
The BQ7790508PW has an SOC accuracy of ±5% over the entire operating range, making it suitable for most battery-powered applications. However, this accuracy can be affected by factors like battery age, temperature, and charging/discharging patterns.
Yes, the BQ7790508PW supports various battery chemistries, including Li-ion, Li-polymer, and NiMH. However, you'll need to configure the device accordingly using the I2C interface and follow the specific calibration procedures for each chemistry.
The BQ7790508PW has a built-in mechanism to compensate for battery self-discharge. It uses a combination of voltage and current measurements to estimate the battery's state of charge, which helps to minimize the impact of self-discharge on the SOC calculation.
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BQ7790508PW Overview
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About Texas Instruments
Texas Instruments (TI) designs and manufactures semiconductors and integrated circuits for a wide range of applications. The company's product portfolio includes analog chips, which are essential for managing power and signal functions in electronic devices, and embedded processors, which serve as the brains in various systems, enabling functionality in everything from industrial equipment to consumer electronics. TI's innovations in semiconductor technology have made it a leader in the industry.
