Description:The ISL85014 is a highly efficient, monolithic, synchronous buck regulator that can deliver 14A of continuous output current from a 3.8V to 18V input supply. The device uses current mode control architecture with a fast transient response and excellent loop stability. The ISL85014 integrates very low ON-resistance high-side and low-side FETs to maximize efficiency and minimize external component count. The minimum BOM and easy layout footprint are extremely friendly to space constraint systems. The operatio
ADJ OUTPUT DOWN TO 0.6V; ALSO REQUIRE 3.8V TO 18V SUPPLY FOR PWM REG POWER STAGE
Analog IC - Other Type:
SWITCHING CONTROLLER
Control Mode:
CURRENT/VOLTAGE-MODE
Control Technique:
PULSE WIDTH MODULATION
Input Voltage-Max:
18 V
Input Voltage-Min:
4.5 V
Input Voltage-Nom:
5 V
JESD-30 Code:
S-PBCC-N15
Length:
3.5 mm
Moisture Sensitivity Level:
3
Number of Functions:
1
Number of Terminals:
15
Operating Temperature-Max:
125 °C
Operating Temperature-Min:
-40 °C
Output Voltage-Max:
5.5 V
Output Voltage-Min:
4.5 V
Output Voltage-Nom:
5 V
Package Body Material:
PLASTIC/EPOXY
Package Code:
QCCN
Package Shape:
SQUARE
Package Style:
CHIP CARRIER
Peak Reflow Temperature (Cel):
260
Seated Height-Max:
0.8 mm
Supply Current-Max (Isup):
5 mA
Surface Mount:
YES
Switcher Configuration:
BUCK-BOOST
Switching Frequency-Max:
660 kHz
Temperature Grade:
AUTOMOTIVE
Terminal Finish:
Pure Matte Tin (Sn) - annealed
Terminal Form:
NO LEAD
Terminal Pitch:
0.5 mm
Terminal Position:
BOTTOM
Time@Peak Reflow Temperature-Max (s):
30
Width:
3.5 mm
ISL85014FRZ-T7A Frequently Asked Questions (FAQs)
Renesas provides a recommended PCB layout in the ISL85014FRZ-T7A evaluation board user manual, which includes guidelines for thermal vias, copper pours, and component placement to minimize thermal resistance and ensure optimal heat dissipation.
To ensure reliable start-up and shutdown, it is recommended to follow the power-up and power-down sequencing guidelines provided in the datasheet, and to use a soft-start circuit to limit the inrush current during power-up. Additionally, a voltage supervisor or reset IC can be used to monitor the input voltage and ensure that the device is properly reset during power-up and power-down.
While the datasheet specifies the maximum input voltage rating, it does not explicitly state the allowed input voltage ripple. According to Renesas' application notes, the device can tolerate up to 10% input voltage ripple without affecting its performance or reliability.
Yes, the ISL85014FRZ-T7A is rated for operation up to 125°C junction temperature. However, it is essential to ensure that the device is properly derated for temperature, and that the PCB and surrounding components are designed to withstand the high temperatures. Additionally, thermal management techniques such as heat sinks or thermal interfaces may be necessary to maintain the device's reliability.
To troubleshoot issues with the output voltage regulation, it is recommended to check the input voltage, output voltage, and feedback voltage using an oscilloscope or a multimeter. Verify that the feedback network is properly connected and that the output voltage is within the specified range. Also, check for any signs of oscillation or instability in the output voltage, and ensure that the device is properly decoupled from the input voltage source.
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ISL85014FRZ-T7A Overview
Use the download button to access the ISL85014FRZ-T7A schematic symbol, PCB footprint, and 3D model.
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