Description:The ISL78301 is a high voltage, low quiescent current linear regulator ideally suited for “always-on” and “keep alive” automotive applications. The ISL78301 operates from an input voltage of +6V to +40V under normal operating conditions and operates down to +3V under a cold crank. It consumes only 18µA of quiescent current at no load on the adjustable version. The ISL78301 is available in a fixed 3. 3V, 5V and adjustable output voltage (2. 5V to 12V) options. It features an EN pin that can be used to put th
SMALL OUTLINE, HEAT SINK/SLUG, THIN PROFILE, SHRINK PITCH
Packing Method:
TUBE
Peak Reflow Temperature (Cel):
260
Regulator Type:
ADJUSTABLE POSITIVE SINGLE OUTPUT LDO REGULATOR
Screening Level:
AEC-Q100
Seated Height-Max:
1.2 mm
Surface Mount:
YES
Terminal Finish:
Pure 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
ISL78301FVECZ Frequently Asked Questions (FAQs)
The recommended PCB layout for optimal performance involves keeping the input and output capacitors close to the device, using a solid ground plane, and minimizing the length of the traces between the device and the capacitors. Additionally, it's recommended to use a separate power plane for the input and output voltages to reduce noise coupling.
To ensure stability and prevent oscillations in the output voltage, it's essential to follow the recommended component values and layout guidelines in the datasheet. Additionally, the output capacitor should be selected based on the output voltage and current requirements, and the input capacitor should be chosen to ensure a stable input voltage. It's also recommended to add a small ceramic capacitor (e.g., 10nF) in parallel with the output capacitor to improve stability.
The ISL78301FVECZ is rated for operation from -40°C to +125°C ambient temperature range. However, it's essential to consider the thermal derating of the device and the PCB layout to ensure reliable operation at high temperatures. It's recommended to follow the thermal design guidelines in the datasheet to ensure the device operates within its specified temperature range.
To protect the device from input voltage transients and surges, it's recommended to add a TVS (Transient Voltage Suppressor) diode or a voltage clamp circuit at the input of the device. This will help to absorb or clamp the transient voltage and prevent it from damaging the device. Additionally, the input capacitor should be selected to withstand the maximum expected input voltage transient.
The recommended input voltage range for optimal performance is from 2.7V to 5.5V. Operating the device outside of this range may affect its performance, efficiency, and reliability. It's essential to ensure that the input voltage is within the specified range to guarantee optimal performance and reliability.
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ISL78301FVECZ Overview
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