Description:The EL7554 is a full-feature synchronous 4A step-down regulator capable of up to 96% efficiency. This device operates from 3V to 6V VIN input supply. With internal CMOS power FETs, the device can operate at up to 100% duty ratio, allowing for output voltage range from 0.8V up to nearly VIN. The adjustable high switching frequency of up to 1MHz enables the use of small components, making the whole converter occupy less than 0.58 square inch with components on one side of the PCB. The EL7554 operates at const
SMALL OUTLINE, HEAT SINK/SLUG, THIN PROFILE, SHRINK PITCH
Peak Reflow Temperature (Cel):
260
Seated Height-Max:
1.2 mm
Supply Current-Max (Isup):
5 mA
Surface Mount:
YES
Switcher Configuration:
BUCK
Switching Frequency-Max:
1000 kHz
Temperature Grade:
INDUSTRIAL
Terminal Finish:
Matte Tin (Sn) - annealed
Terminal Form:
GULL WING
Terminal Pitch:
0.65 mm
Terminal Position:
DUAL
Time@Peak Reflow Temperature-Max (s):
30
Width:
4.4 mm
EL7554IREZ-T7 Frequently Asked Questions (FAQs)
A good PCB layout for optimal thermal performance would be to have a solid ground plane on the bottom layer, and to use thermal vias to connect the exposed pad to the ground plane. This helps to dissipate heat efficiently.
To ensure reliable operation across the entire operating temperature range, it's essential to follow the recommended operating conditions, including voltage, current, and power dissipation. Additionally, consider using thermal management techniques, such as heat sinks or thermal interfaces, to maintain a safe junction temperature.
To mitigate EMI and RFI, use proper PCB layout techniques, such as separating analog and digital circuits, using shielding, and minimizing loop areas. Also, consider using filters, such as common-mode chokes or ferrite beads, to reduce emissions.
When selecting input and output capacitors, consider the voltage rating, capacitance value, and equivalent series resistance (ESR). Choose capacitors with a voltage rating higher than the maximum input voltage, and select capacitors with low ESR to minimize energy losses.
Critical timing parameters to consider include the switching frequency, rise and fall times, and propagation delays. Ensure that your design meets the recommended timing specifications to avoid oscillations, instability, or malfunction.
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Manufacturer Collaborated
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System Verified
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Community Approved
Sponsored
EL7554IREZ-T7 Overview
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