LP3936SLX LED Driver IC Equivalent & Substitute Parts

Part Overview

The LP3936SLX is a 9-output LED driver IC with integrated DC-DC regulator featuring step-up (boost) topology and PWM dimming capability. Designed for backlight and camera flash applications, this device operates from a 3V to 6V supply and delivers 5.3V output with 25mA standard or 120mA flash current per channel. The LP3936SLX is classified as obsolete, making identification of compatible substitute parts essential for ongoing design support and production continuity.

Substiute Parts

LP3936SLX

Texas InstrumentsIn Stock: 2377LP3936SLX Datasheet

Current PartRFQ

LP3936SL/NOPB

Texas InstrumentsIn Stock: 1210LP3936SL/NOPB Datasheet

Parametric EquivalentRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitute parts for the LP3936SLX are identified based on strict parametric equivalence across the following critical criteria:

Electrical Parameters (Must Match):

• DC-DC regulator topology: Step-up (boost)
• Number of independent outputs: 9 channels
• Input voltage range: 3V to 6V minimum and maximum
• Output voltage: 5.3V
• Output current capability: 25mA standard, 120mA flash mode per channel
• Switching frequency: 1MHz
• Dimming method: PWM control

Mechanical Parameters (Must Match):

• Package type: 32-WFLGA
• Package dimensions: 5.5x4.5mm
• Mounting technology: Surface mount

Environmental Parameters (Must Match):

• Operating temperature range: -40°C to 85°C
• Moisture sensitivity level: 3 (168 hours)

The LP3936SL/NOPB qualifies as a parametric equivalent substitute because it maintains identical electrical specifications, package configuration, and environmental ratings as the main part number.

Parameter Comparison

Engineering Selection Recommendations

LP3936SL/NOPB is the direct parametric equivalent for LP3936SLX applications. Both parts share identical electrical and mechanical specifications, ensuring pin-for-pin and functional compatibility in existing designs.

Compliance Consideration: The LP3936SL/NOPB carries RoHS3 compliance certification, whereas the LP3936SLX is RoHS non-compliant. For new designs or applications subject to RoHS requirements, the LP3936SL/NOPB is the preferred selection. For legacy systems already using non-compliant components, either part maintains functional equivalence.

Packaging Difference: The LP3936SLX is supplied in standard packaging, while LP3936SL/NOPB is available in cut tape (CT) format. This distinction affects procurement and assembly logistics but does not impact electrical or mechanical performance.

Frequently Asked Questions (FAQ)

Q: Can LP3936SL/NOPB replace LP3936SLX in existing designs? A: Yes. Both parts are parametrically equivalent across all critical electrical, mechanical, and environmental specifications. Pin configuration, output voltage, current ratings, and package dimensions are identical.

Q: What is the difference between LP3936SLX and LP3936SL/NOPB? A: The primary differences are RoHS compliance status (LP3936SL/NOPB is RoHS3 compliant) and packaging format (LP3936SL/NOPB supplied in cut tape). Electrical and mechanical specifications are identical.

Q: Are there any thermal or frequency differences between these parts? A: No. Both parts operate at 1MHz switching frequency and support the same -40°C to 85°C temperature range. Thermal performance and frequency characteristics are equivalent.

Q: Can I use LP3936SL/NOPB in applications originally designed for LP3936SLX? A: Yes, without design modifications. The 32-WFLGA package, pin assignment, electrical ratings, and control interface are identical. Direct substitution is supported.

Q: What does the "/NOPB" suffix indicate? A: The "/NOPB" designation indicates the part is supplied without plumbum (lead-free), reflecting RoHS3 compliance. This is a packaging and compliance designation only and does not affect functional equivalence.

Q: Are both parts suitable for backlight and camera flash applications? A: Yes. Both LP3936SLX and LP3936SL/NOPB are rated for backlight and camera flash applications with identical 25mA standard and 120mA flash current capabilities per output channel.