Description:ISL88550A integrates a synchronous buck PWM controller to generate VDDQ, a sourcing and sinking LDO linear regulator to generate VTT, and a 10mA reference output buffer to generate VTTR. The buck controller drives two external N-Channel MOSFETs to generate output voltages down to 0. 7V from a 2V to 25V input with output currents up to 15A. The LDO can source up to 2. 5A and sink up to -2. 0A continuously. Both the LDO output and the 10mA reference buffer output can be made to track the REFIN voltage via a b
ALSO WORKS IN PFM MODE; OUTPUT VOLTAGE FROM 0.7 TO 3.5 V
Analog IC - Other Type:
SWITCHING CONTROLLER
Control Mode:
CURRENT-MODE
Control Technique:
PULSE WIDTH MODULATION
Input Voltage-Max:
25 V
Input Voltage-Min:
2 V
Input Voltage-Nom:
15 V
JESD-30 Code:
S-PQCC-N28
JESD-609 Code:
e3
Length:
5 mm
Moisture Sensitivity Level:
3
Number of Functions:
1
Number of Terminals:
28
Operating Temperature-Max:
85 °C
Operating Temperature-Min:
-40 °C
Output Voltage-Nom:
2.5 V
Package Body Material:
PLASTIC/EPOXY
Package Code:
HVQCCN
Package Equivalence Code:
LCC28,.2SQ,20
Package Shape:
SQUARE
Package Style:
CHIP CARRIER, HEAT SINK/SLUG, VERY THIN PROFILE
Packing Method:
TR
Peak Reflow Temperature (Cel):
260
Seated Height-Max:
0.85 mm
Supply Current-Max (Isup):
1 mA
Surface Mount:
YES
Switcher Configuration:
BUCK-BOOST
Switching Frequency-Max:
600 kHz
Temperature Grade:
INDUSTRIAL
Terminal Finish:
Matte Tin (Sn) - annealed
Terminal Form:
NO LEAD
Terminal Pitch:
0.5 mm
Terminal Position:
QUAD
Time@Peak Reflow Temperature-Max (s):
30
Width:
5 mm
ISL88550AIRZ-T Frequently Asked Questions (FAQs)
A 4-layer PCB with a solid ground plane and thermal vias is recommended. The device should be placed near a thermal pad or a heat sink to dissipate heat efficiently.
Ensure that the device is operated within the recommended voltage and current limits, and that the PCB is designed to minimize thermal gradients. Also, consider using a thermal interface material (TIM) to improve heat transfer between the device and the heat sink.
Use a shielded enclosure, keep the device away from antennas and other EMI-sensitive components, and ensure that the PCB layout minimizes radiation. Also, consider using EMI filters and shielding on the input and output lines.
Check the voltage and current levels, ensure that the input voltage is within the recommended range, and verify that the device is properly configured. Also, check for any short circuits or overcurrent conditions that may be causing the power-good output to malfunction.
Use a high-impedance probe to measure voltage and current, and ensure that the measurement equipment is properly calibrated. Also, use a thermal camera or thermocouple to measure the device temperature, and verify that the device is operating within the recommended specifications.
Trust Checks
This model has been built in collaboration with the manufacturer.
Manufacturer Collaborated
This model has been verified by system checks.
System Verified
This model has been reviewed by community users.
Community Approved
Sponsored
ISL88550AIRZ-T Overview
Use the download button to access the ISL88550AIRZ-T schematic symbol, PCB footprint, and 3D model.
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