Description:The ISL97692, ISL97693, ISL97694A are Intersil’s highly integrated 4- and 6-channel LED drivers for display backlighting. These parts maximize battery life by featuring only 1mA quiescent current, and by operating down to 2. 4V input voltage, with no need for higher voltage supplies. The ISL97692 has four channels and provides 8-bit PWM dimming with adjustable dimming frequency up to 30kHz. The ISL97693 has six channels with Direct PWM dimming control. The ISL97694A has 6 channels and provides 8-, 10-, or 1
CHIP CARRIER, HEAT SINK/SLUG, VERY VERY THIN PROFILE
Peak Reflow Temperature (Cel):
260
Seated Height-Max:
0.8 mm
Supply Voltage-Max:
5.5 V
Supply Voltage-Min:
2.4 V
Supply Voltage-Nom:
3.3 V
Surface Mount:
YES
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:
3 mm
fmax-Min:
0.4 MHz
ISL97694AIRTZ Frequently Asked Questions (FAQs)
Renesas provides a recommended PCB layout in the application note AN1995, which includes guidelines for thermal vias, copper pours, and component placement to minimize thermal resistance and ensure reliable operation.
To optimize output voltage accuracy and stability, ensure that the input voltage is within the recommended range, use a high-quality output capacitor with low ESR, and minimize noise and ripple on the input and output lines. Additionally, consider using a voltage reference IC, such as the ISL21090, to provide a stable reference voltage.
The maximum output current capability of the ISL97694AIRTZ is 4A, but this can be limited by the thermal performance of the PCB and the ambient temperature. Be sure to check the thermal derating curves in the datasheet to ensure the device can deliver the required current in your specific application.
The ISL97694AIRTZ has built-in overvoltage protection (OVP) and undervoltage lockout (UVLO) features. However, additional protection can be added using external components, such as a voltage supervisor IC, to detect and respond to fault conditions. Be sure to follow the guidelines in the datasheet and application notes for proper implementation.
The recommended input capacitor value is 10uF to 22uF, with a low ESR (Equivalent Series Resistance) and a voltage rating of at least 25V. A ceramic or film capacitor with an X7R or X5R dielectric is recommended. The input capacitor helps to filter out noise and ripple on the input line and ensures stable operation.
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ISL97694AIRTZ Overview
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