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RTQ2104GSP-QA
Public Made by Adomby adom
Richtek Tech DC-DC Converters, SOP-8-EP. Pinout cross-checked by two models against the datasheet, KiCad symbol/footprint/3D.
3D Model
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Symbol & Footprint
Schematic Symbol
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PCB Footprint
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Datasheet
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README
markdownRTQ2104GSP-QA
Richtek Tech · DC-DC Converters · SOP-8-EP
RTQ2104GSP-QA from Richtek Tech, in a SOP-8-EP. Pinout and pin descriptions extracted from the manufacturer datasheet (extract_pins, cross-checked by a second model); symbol, footprint, and 3D from KiCad-official CAD.
Pinout
| Pin | Name | Type | Function |
|---|---|---|---|
| 1 | SW | output | Switch node that supplies power to the output and connects the output LC filter from SW to the output load. |
| 2 | GND | power_in | Ground return path for the control circuitry and low-side power MOSFET; connect to the negative terminals of the input and output capacitors. |
| 3 | PGOOD | output | Open-drain power-good output that is pulled low to ground if any internal protection is triggered once soft-start is finished. |
| 4 | FB | input | Feedback input connected to the midpoint of the external resistive divider; the device regulates FB to a typical 0.8V reference. |
| 5 | EN | input | Enable control input: a logic-high enables the converter and a logic-low forces the device into shutdown mode. |
| 6 | VCC | power_out | Output of the internal 5V linear regulator powered by VIN; decouple with an X7R ceramic capacitor from VCC to ground for normal operation. |
| 7 | BOOT | passive | Bootstrap capacitor connection that supplies the high-side gate driver; a ceramic capacitor in series with a resistor connects this pin to SW. |
| 8 | VIN | power_in | Power input with an operating range of 3V to 36V after soft-start is finished; input capacitors connect between this pin and GND. |
| 9 | PAD | passive | Exposed pad that is internally unconnected and must be soldered to a large GND plane with thermal vias to dissipate heat. |
Key specifications
| Parameter | Value |
|---|---|
| Manufacturer | Richtek Tech |
| Package | SOP-8-EP |
| Category | Power Management (PMIC) |
| Pins | 9 |
Electrical characteristics
Limits as printed in the datasheet (page.json metadata.characteristics carries them as data).
| Parameter | Symbol | Min | Typ | Max | Unit | Conditions | Page |
|---|---|---|---|---|---|---|---|
| Operating Input Voltage | VIN | 3 | 36 | V | Soft-start is finished | 9 | |
| VIN Under-Voltage Lockout Threshold (rising) | VUVLOH | 3.6 | 3.8 | 4 | V | VIN rising | 9 |
| VIN Under-Voltage Lockout Threshold (falling) | VUVLOL | 2.7 | 2.85 | 3 | V | VIN falling | 9 |
| Shutdown Current | ISHDN | 5 | μA | VEN = 0V | 9 | ||
| Quiescent Current (RTQ2104, PSM) | IQ | 40 | 50 | μA | VEN = 2V, VFB = 0.82V, not switching, PSM | 9 | |
| Reference Voltage | VREF | 0.792 | 0.8 | 0.808 | V | 3V ≤ VIN ≤ 36V, PWM, TA = TJ = 25°C | 10 |
| Reference Voltage | VREF | 0.788 | 0.8 | 0.812 | V | 3V ≤ VIN ≤ 36V, PWM, TA = TJ = 40°C to 125°C | 10 |
| Enable Threshold Voltage (rising) | VENH | 1.15 | 1.25 | 1.35 | V | VEN rising | 10 |
| Enable Threshold Voltage (falling) | VENL | 0.9 | 1.05 | 1.15 | V | VEN falling | 10 |
| High-Side Switch Current Limit | ILIM_H | 4.25 | 5 | 5.75 | A | VBOOT − VSW = 4.8V, Min. Duty Cycle | 10 |
| Switching Frequency | fSW | 1.89 | 2.1 | 2.31 | MHz | 10 | |
| Minimum On-Time | tON_MIN | 60 | 80 | ns | 10 | ||
| Minimum Off-Time | tOFF_MIN | 65 | 80 | ns | 10 | ||
| High-Side Switch On-Resistance | RDS(ON)_H | 80 | 150 | mΩ | 10 | ||
| Low-Side Switch On-Resistance | RDS(ON)_L | 80 | 150 | mΩ | 10 | ||
| High-Side Switch Leakage Current | ILK_H | 1 | μA | VEN = 0V, VSW = 0V | 10 | ||
| Soft-Start Period | tSS | 1.4 | 2 | 2.6 | ms | 10% to 90% | 10 |
| Power Good Threshold (low to high, VFB rising) | VTH_PGLH1 | 85 | 90 | 95 | % | VFB rising, % of VREF, PGOOD from low to high | 10 |
| Power Good Threshold (high to low, VFB falling) | VTH_PGHL2 | 80 | 85 | 90 | % | VFB falling, % of VREF, PGOOD from high to low | 10 |
| Power Good Leakage Current | ILK_PGOOD | 0.5 | μA | PGOOD signal good, VFB = VREF, VPGOOD = 5.5V | 10 | ||
| Power Good Sink Current Capability | ISK_PGOOD | 0.3 | V | PGOOD signal fault, IPGOOD sinks 2mA | 10 | ||
| Output Under-Voltage Protection Trip Threshold | VUVP | 0.35 | 0.4 | 0.45 | V | UVP detect | 11 |
| Supply Input Voltage (absolute maximum) | VIN | -0.3 | 42 | V | 9 | ||
| Switch Voltage (absolute maximum) | SW | -0.3 | 42 | V | 9 | ||
| Switch Voltage (transient) | SW | -5 | 46.3 | V | <50ns | 9 | |
| BOOT Voltage (absolute maximum) | VBOOT | -0.3 | 48 | V | 9 | ||
| BOOT to SW Voltage (absolute maximum) | VBOOT − VSW | -0.3 | 6 | V | 9 | ||
| EN Voltage (absolute maximum) | EN | -0.3 | 42 | V | 9 | ||
| Other Pins Voltage (absolute maximum) | -0.3 | 6 | V | 9 | |||
| Power Dissipation SOP-8 (Exposed Pad) | PD | 4.31 | W | TA = 25°C | 9 | ||
| Junction Temperature (absolute maximum) | 150 | °C | 9 | ||||
| Lead Temperature (soldering) | 260 | °C | Soldering, 10 sec. | 9 | |||
| Storage Temperature Range | -65 | 150 | °C | 9 | |||
| ESD Susceptibility | 2 | kV | HBM (Human Body Model) | 9 | |||
| Supply Voltage (recommended operating) | VIN | 3 | 36 | V | RTQ2104 Supply Voltage | 9 | |
| Output Voltage (recommended operating) | VOUT | 0.8 | V | Upper limit is VIN (not a numeric value) | 9 | ||
| Junction Temperature Range (recommended operating) | TJ | -40 | 150 | °C | 9 | ||
| Ambient Temperature Range (recommended operating) | TA | -40 | 125 | °C | 9 | ||
| Package Thermal Resistance Junction-to-Ambient | θJA | 29 | °C/W | SOP-8 (Exposed Pad), measured per JEDEC 51-7 four-layer board, still air, TA = 25°C | 9 | ||
| Package Thermal Resistance Junction-to-Case | θJC | 6.5 | °C/W | SOP-8 (Exposed Pad), measured at exposed pad | 9 |
CAD (KiCad official)
- Symbol:
RTQ2104GSP-QA - Footprint:
Package_SO:SOIC-8-1EP_3.9x4.9mm_P1.27mm_EP2.29x3mm - 3D model: SOP-8-EP (KiCad packages3D, STEP)
- 3D model files:
rtq2104gsp-qa-etched.step/rtq2104gsp-qa-etched.glbcarry the MPN laser-etched on the die in a toggleableAdom.LaserEtchgroup (Fusion-ready);rtq2104gsp-qa.step/rtq2104gsp-qa.glbare the bare package body.
Provenance
Data extracted from the manufacturer datasheet, not a distributor listing:
- Datasheet: Richtek Tech datasheet (27 pp, sha256
b2a7eead58ff10ff, retrieved 2026-10-17, tier: lcsc) - Extractor: parts-factory
2.0.0/extract_pins 0.3, primaryclaude-haiku-5-5(text), consensusclaude-sonnet-5-5(agreed), guards: pin_guards 0.1: passed. Pins are checked against the footprint pad set and their cited datasheet pages before publish. - CAD: KiCad official libraries (CC-BY-SA 4.0).