Richtek

Package Codes

QFN Packages

WLCSP Packages

SOT-23 Packages

DFN Packages

SOP/SOIC Packages

TSSOP Packages

MSOP Packages

Product Lines

RT4xxx - LED Drivers / Backlight Controllers

RT5xxx - DC-DC Converters

RT6xxx - High-Efficiency DC-DC Converters

RT8xxx - DC-DC Converters / LED Drivers

RT9xxx - LDO / Linear Regulators

RTQ Series - Automotive Grade

Handler Implementation Notes

Package Code Extraction

// Richtek package codes are typically 2-3 letters after the part number
// Pattern: RT[Q]?[0-9]{4}[package-letters]...
// Examples: RT8059GQW -> GQW -> QFN
//           RT9013-33GB -> GB -> SOT-23-5

// Handle voltage code in middle (e.g., RT9013-33GB)
// Pattern: RT[0-9]{4}-[0-9]{2}[package]
Pattern voltagePattern = Pattern.compile("^RT[0-9]{4}-[0-9]{2}([A-Z]{2,3})$");

Series Extraction

// RTQ series returns "RTQ"
// Standard RT[4-9]xxx returns "RT4", "RT5", "RT6", "RT8", "RT9"
if (upperMpn.startsWith("RTQ")) {
    return "RTQ";
}
if (upperMpn.matches("^RT[4-9][0-9]{3}.*")) {
    return upperMpn.substring(0, 3);  // RT4, RT5, RT6, RT8, RT9
}

LED Driver vs Voltage Regulator Detection

// LED Drivers: RT4xxx, RT84xx, RT85xx
// Voltage Regulators: RT5xxx, RT6xxx, RT8[0-367-9]xx, RT9xxx

private boolean isLEDDriver(String mpn) {
    return mpn.matches("^RT4[0-9]{3}.*") ||      // RT4xxx
           mpn.matches("^RT8[45][0-9]{2}.*") ||   // RT84xx, RT85xx
           mpn.matches("^RTQ4[0-9]{3}.*") ||      // RTQ4xxx
           mpn.matches("^RTQ8[45][0-9]{2}.*");    // RTQ84xx, RTQ85xx
}

Automotive Grade Detection

// RTQ prefix indicates AEC-Q100 automotive qualification
// Also check for -AEC suffix
public boolean isAutomotiveGrade(String mpn) {
    String upper = mpn.toUpperCase();
    return upper.startsWith("RTQ") || upper.contains("-AEC");
}

Automotive Equivalents

// RTQ6150 is automotive version of RT6150
// Check for equivalent parts with/without Q
private boolean areEquivalentParts(String mpn1, String mpn2) {
    // RTQ6150 <-> RT6150
    if (mpn1.startsWith("RTQ") && mpn2.startsWith("RT") && !mpn2.startsWith("RTQ")) {
        String num1 = mpn1.substring(3, 7);  // 4-digit from RTQxxxx
        String num2 = mpn2.substring(2, 6);  // 4-digit from RTxxxx
        return num1.equals(num2);
    }
}

Related Files

• Handler: manufacturers/RichtekHandler.java
• Component types: IC, VOLTAGE_REGULATOR, LED_DRIVER
• Test file: handlers/RichtekHandlerTest.java

Learnings & Edge Cases

• RT84xx/RT85xx are LED drivers, not DC-DC converters like other RT8xxx parts
• RTQ prefix indicates AEC-Q100 automotive qualification - same part number with RTQ vs RT are equivalent except for temperature rating
• Voltage code in MPN: Parts like RT9013-33GB have voltage (33=3.3V) embedded between part number and package
• Battery chargers: RT945x and RT946x are battery charger ICs, classified as voltage regulators
• Package suffix structure: Package codes start with G, P, S, M, T followed by package-specific letters
• Tape and reel suffixes: -TR, -E, -RL, -REEL should be stripped before package extraction