ADJUSTABLE OUTPUT VOLTAGE RANGE FROM 0.8 V TO 15.2 V
Analog IC - Other Type:
SWITCHING REGULATOR
Control Mode:
CURRENT-MODE
Control Technique:
PULSE WIDTH MODULATION
Input Voltage-Max:
16 V
Input Voltage-Min:
4.5 V
Input Voltage-Nom:
12 V
JESD-30 Code:
R-PDSO-G8
JESD-609 Code:
e3
Length:
2.9 mm
Moisture Sensitivity Level:
1
Number of Functions:
1
Number of Terminals:
8
Operating Temperature-Max:
125 °C
Operating Temperature-Min:
-40 °C
Package Body Material:
PLASTIC/EPOXY
Package Code:
VSSOP
Package Shape:
RECTANGULAR
Package Style:
SMALL OUTLINE, VERY THIN PROFILE, SHRINK PITCH
Seated Height-Max:
1 mm
Surface Mount:
YES
Switcher Configuration:
BUCK
Switching Frequency-Max:
500 kHz
Temperature Grade:
AUTOMOTIVE
Terminal Finish:
Matte Tin (Sn)
Terminal Form:
GULL WING
Terminal Pitch:
0.65 mm
Terminal Position:
DUAL
Width:
1.6 mm
MP1494SGJ-Z Frequently Asked Questions (FAQs)
A good PCB layout for the MP1494SGJ-Z should prioritize thermal dissipation. Place the device near a thermal pad or a heat sink, and ensure good airflow around the component. Use a 2-3 layer PCB with a solid ground plane to reduce thermal resistance. Keep the input and output capacitors close to the device to minimize parasitic inductance.
To optimize output voltage accuracy, ensure the feedback resistors (R1 and R2) have a 1% tolerance or better. Use a high-precision voltage reference, and consider adding a capacitor (e.g., 10nF) in parallel with R2 to filter noise. Additionally, minimize the distance between the feedback pin and the output capacitor to reduce noise coupling.
For the MP1494SGJ-Z, use a low-ESR ceramic capacitor (e.g., X5R or X7R) with a value between 4.7μF to 10μF. This will help filter input noise and ensure stable operation. Avoid using electrolytic capacitors, as they may not provide sufficient filtering.
The MP1494SGJ-Z has a built-in thermal shutdown feature that activates when the junction temperature exceeds 150°C. To handle this, ensure good thermal design and heat dissipation. If thermal shutdown occurs, the device will automatically restart when the temperature drops below 130°C. Consider adding a thermal monitoring circuit or a temperature sensor to detect and respond to thermal events.
For the MP1494SGJ-Z, use a low-ESR ceramic capacitor (e.g., X5R or X7R) with a value between 10μF to 22μF. This will help filter output noise and ensure stable operation. Avoid using electrolytic capacitors, as they may not provide sufficient filtering. Consider adding a 1-2μF ceramic capacitor in parallel with the main output capacitor to further reduce noise.
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MP1494SGJ-Z Overview
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