OVER VOLTAGE AND UNDER VOLTAGE THRESHOLD IS 4.2 AND 2.7V
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:
+4.2,2.7V
Time@Peak Reflow Temperature-Max (s):
30
Width:
4.4 mm
BQ7790503PWR Frequently Asked Questions (FAQs)
Texas Instruments provides a recommended PCB layout in the datasheet, but it's essential to follow good PCB design practices, such as keeping the power and ground planes separate, using a solid ground plane, and minimizing trace lengths and widths to reduce noise and EMI.
To ensure accurate battery monitoring and charging, it's crucial to follow the recommended calibration procedure outlined in the datasheet. Additionally, consider using a high-precision voltage reference, such as the REF3020, and ensure that the battery voltage sense lines are properly filtered and shielded.
The maximum charging current for the BQ7790503PWR is 3A, but it's essential to consider the thermal limitations of the device and the battery's charging characteristics to avoid overheating or damage.
While the BQ7790503PWR is optimized for Li-ion batteries, it can be used with other battery chemistries, such as NiMH or Lead-Acid, with some modifications to the charging algorithm and voltage thresholds. However, it's essential to consult the datasheet and application notes for specific guidance.
The BQ7790503PWR has built-in overcharge protection, but it's essential to configure the device correctly using the OTP (One-Time Programmable) memory or the I2C interface. Consult the datasheet and application notes for specific guidance on implementing overcharge protection.
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BQ7790503PWR 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.
