Description:The ISL6227 dual PWM controller delivers high efficiency precision voltage regulation from two synchronous buck DC/DC converters. It was designed especially to provide power regulation for DDR memory, chipsets, graphics and other system electronics in Notebook PCs. The ISL6227's wide input voltage range capability allows for voltage conversion directly from AC/DC adaptor or Li-Ion battery pack. Automatic mode transition of constant-frequency synchronous rectification at heavy load, and hysteretic (HYS) diod
ALSO OPERATES IN ADJUSTABLE MODE FROM 0.9V TO 5.5V
Analog IC - Other Type:
DUAL SWITCHING CONTROLLER
Control Mode:
CURRENT-MODE
Control Technique:
PULSE WIDTH MODULATION
Input Voltage-Max:
28 V
Input Voltage-Min:
5 V
Input Voltage-Nom:
16 V
JESD-30 Code:
R-PDSO-G28
JESD-609 Code:
e3
Length:
5 mm
Moisture Sensitivity Level:
3
Number of Functions:
1
Number of Terminals:
28
Operating Temperature-Max:
100 °C
Operating Temperature-Min:
-40 °C
Output Voltage-Max:
5.5 V
Output Voltage-Min:
0.9 V
Package Body Material:
PLASTIC/EPOXY
Package Code:
SSOP
Package Equivalence Code:
SSOP28,.25
Package Shape:
RECTANGULAR
Package Style:
SMALL OUTLINE, SHRINK PITCH
Peak Reflow Temperature (Cel):
260
Seated Height-Max:
1.95 mm
Supply Current-Max (Isup):
3 mA
Surface Mount:
YES
Switcher Configuration:
PHASE-SHIFT
Switching Frequency-Max:
345 kHz
Temperature Grade:
INDUSTRIAL
Terminal Finish:
Matte Tin (Sn) - annealed
Terminal Form:
GULL WING
Terminal Pitch:
0.5 mm
Terminal Position:
DUAL
Time@Peak Reflow Temperature-Max (s):
30
Width:
5 mm
ISL6227IAZ-T Frequently Asked Questions (FAQs)
The recommended layout for the ISL6227IAZ-T involves placing the input capacitors close to the VIN pin, using a solid ground plane, and keeping the high-frequency switching nodes (e.g., LX pin) away from sensitive analog nodes. A 4-layer PCB with a dedicated power plane and a solid ground plane is recommended.
To select the right inductor for the ISL6227IAZ-T, consider the following factors: inductance value, DC resistance, saturation current, and core material. A good starting point is to choose an inductor with an inductance value between 1.5μH to 3.3μH, a DC resistance less than 100mΩ, and a saturation current greater than the peak current of the converter.
The ISL6227IAZ-T can operate in an ambient temperature range of -40°C to +85°C. However, the maximum junction temperature (TJ) should not exceed +125°C. It's essential to ensure proper thermal design and heat dissipation to prevent overheating.
To troubleshoot the ISL6227IAZ-T, start by checking the input voltage, output voltage, and enable pin (EN) voltage. Verify that the input voltage is within the recommended range, the output voltage is within the desired range, and the enable pin is properly biased. Also, check for any signs of overheating, such as excessive heat or a high junction temperature.
Yes, the ISL6227IAZ-T is suitable for high-reliability and automotive applications. It's AEC-Q100 qualified, which means it meets the stringent requirements for automotive applications. However, it's essential to follow proper design and manufacturing guidelines to ensure the device operates reliably in these applications.
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Manufacturer Collaborated
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System Verified
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Sponsored
ISL6227IAZ-T Overview
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