SELECTABLE THREE OR FOUR CELL OPERATION, OVERCURRENT PROTECTION
Adjustable Threshold:
NO
Analog IC - Other Type:
BATTERY PROTECTOR
JESD-30 Code:
R-PDSO-G16
Length:
4.9 mm
Number of Channels:
4
Number of Functions:
1
Number of Terminals:
16
Operating Temperature-Max:
70 °C
Operating Temperature-Min:
-20 °C
Package Body Material:
PLASTIC/EPOXY
Package Code:
SSOP
Package Equivalence Code:
SSOP16,.25
Package Shape:
RECTANGULAR
Package Style:
SMALL OUTLINE, SHRINK PITCH
Qualification Status:
Not Qualified
Seated Height-Max:
1.75 mm
Supply Current-Max (Isup):
0.04 mA
Supply Voltage-Max (Vsup):
20 V
Supply Voltage-Min (Vsup):
6.5 V
Supply Voltage-Nom (Vsup):
16 V
Surface Mount:
YES
Technology:
BICMOS
Temperature Grade:
OTHER
Terminal Form:
GULL WING
Terminal Pitch:
0.635 mm
Terminal Position:
DUAL
Width:
3.9 mm
UCC3957M-3G4 Frequently Asked Questions (FAQs)
A good PCB layout is crucial for the UCC3957M-3G4. TI recommends a 4-layer board with a solid ground plane, and the use of vias to connect the input and output capacitors to the ground plane. Keep the input and output traces short and away from each other to minimize noise and EMI.
Choose input and output capacitors with low ESR (Equivalent Series Resistance) and high ripple current ratings. X5R or X7R ceramic capacitors are recommended. The input capacitor should be at least 10uF, and the output capacitor should be at least 22uF. Ensure the capacitors are rated for the maximum input and output voltages.
The UCC3957M-3G4 is rated for operation up to 125°C junction temperature. However, for reliable operation, it's recommended to keep the ambient temperature below 105°C. Ensure good airflow and heat sinking to keep the device within its operating temperature range.
To ensure stability, follow the recommended PCB layout and component selection guidelines. Use a compensation capacitor (Ccomp) between the COMP pin and GND, and adjust its value based on the output voltage and load current. A good starting point is a 10nF capacitor. Also, ensure the input and output capacitors are properly decoupled.
The UCC3957M-3G4 is capable of delivering up to 3A of output current. However, the maximum output current is dependent on the input voltage, output voltage, and ambient temperature. Refer to the datasheet's thermal derating curves to determine the maximum output current for your specific application.
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UCC3957M-3G4 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.
