# LM48410SQX

**Texas Instruments** · Audio Power OpAmps · WQFN-24(4x4)

LM48410SQX from Texas Instruments, in a WQFN-24(4x4). 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 | 3DR+ | passive | Right channel non-inverting 3D connection; connect to 3DL+ through C3D+ and R3D+, and the two 3D RC networks must have identical component values in fully differential configuration. |
| 2 | INR+ | input | Right channel non-inverting input of the fully differential audio input pair; input voltage must stay within -0.3V to VDD + 0.3V (absolute maximum). |
| 3 | INR- | input | Right channel inverting input of the fully differential audio input pair; input voltage must stay within -0.3V to VDD + 0.3V (absolute maximum). |
| 4 | 3DEN | input | 3D enable input; set high to enable the 3D effect and set low to disable it, with logic input levels VIH min 1.4V and VIL max 0.4V. |
| 5 | INL- | input | Left channel inverting input of the fully differential audio input pair; input voltage must stay within -0.3V to VDD + 0.3V (absolute maximum). |
| 6 | INL+ | input | Left channel non-inverting input of the fully differential audio input pair; input voltage must stay within -0.3V to VDD + 0.3V (absolute maximum). |
| 7 | 3DL+ | passive | Left channel non-inverting 3D connection; connect to 3DR+ through C3D+ and R3D+. |
| 8 | 3DL- | passive | Left channel inverting 3D connection; connect to 3DR- through C3D- and R3D-. |
| 9 | G1 | input | Gain select input 1; together with G0 it selects 6, 12, 18 or 24 dB gain (G1G0 = 00, 01, 10, 11 give 6, 12, 18, 24 dB), with logic input levels VIH min 1.4V and VIL max 0.4V. |
| 10 | PVDD | power_in | Speaker power supply pin; supply range is 2.4V to 5.5V for VDD and PVDD. |
| 11 | OUTLA | output | Left channel non-inverting class D output, which switches between VDD and GND with a 300kHz nominal switching frequency. |
| 12 | OUTLB | output | Left channel inverting class D output, which switches between VDD and GND with a 300kHz nominal switching frequency. |
| 13 | PGND | power_in | Power ground pin. |
| 14 | SDL | input | Left channel active-low shutdown; connect to VDD for normal operation and to GND to disable the left channel, with logic input levels VIH min 1.4V and VIL max 0.4V. |
| 15 | SS/FF | input | Modulation mode select; connect to VDD for spread spectrum mode (switching frequency varies by 30% about 300kHz) or to GND for fixed frequency mode at 300kHz. |
| 16 | SDR | input | Right channel active-low shutdown; connect to VDD for normal operation and to GND to disable the right channel, with logic input levels VIH min 1.4V and VIL max 0.4V. |
| 17 | GND | power_in | Ground pin; the exposed thermal pad must also be connected to GND. |
| 18 | PGND | power_in | Power ground pin. |
| 19 | OUTRB | output | Right channel inverting class D output, which switches between VDD and GND with a 300kHz nominal switching frequency. |
| 20 | OUTRA | output | Right channel non-inverting class D output, which switches between VDD and GND with a 300kHz nominal switching frequency. |
| 21 | PVDD | power_in | Speaker power supply pin; supply range is 2.4V to 5.5V for VDD and PVDD. |
| 22 | VDD | power_in | Power supply pin; operating range is 2.4V to 5.5V, with an absolute maximum supply of 6.0V. |
| 23 | G0 | input | Gain select input 0; together with G1 it selects the 6, 12, 18 or 24 dB gain setting, with logic input levels VIH min 1.4V and VIL max 0.4V. |
| 24 | 3DR- | passive | Right channel inverting 3D connection; connect to 3DL- through C3D- and R3D-. |
| 25 | EP | passive | Exposed pad (from the footprint; not named in the datasheet pin table). |

## Key specifications

| Parameter | Value |
|---|---|
| Manufacturer | Texas Instruments |
| Package | WQFN-24(4x4) |
| Category | Operational Amplifier/Comparator |
| Pins | 25 |

## Electrical characteristics

Limits as printed in the datasheet (page.json `metadata.characteristics` carries them as data).

| Parameter | Symbol | Min | Typ | Max | Unit | Conditions | Page |
|---|---|---|---|---|---|---|---|
| Supply Voltage |  |  |  | 6 | V | All voltages measured with respect to ground pin | 4 |
| Storage Temperature |  | -65 |  | 150 | °C |  | 4 |
| Input Voltage |  | -0.3 |  |  | V | Upper limit VDD + 0.3V | 4 |
| Junction Temperature |  |  |  | 150 | °C |  | 4 |
| ESD Susceptibility (Human Body Model) |  |  |  | 2000 | V | Human body model, 100pF discharged through 1.5kΩ | 4 |
| ESD Susceptibility (Machine Model) |  |  |  | 200 | V | Machine model, 220pF-240pF discharged through all pins | 4 |
| Temperature Range | TA | -40 |  | 85 | °C | TMIN ≤ TA ≤ TMAX | 4 |
| Supply Voltage (VDD, PVDD) | VDD, PVDD | 2.4 |  | 5.5 | V |  | 4 |
| Quiescent Power Supply Current | IDD |  | 4 | 6.5 | mA | VIN = 0, No Load, both channels active, VDD = 3.6V | 5 |
| Quiescent Power Supply Current | IDD |  | 5 | 8.5 | mA | VIN = 0, No Load, both channels active, VDD = 5V | 5 |
| Shutdown Current | ISD |  | 0.03 | 1 | μA | VSDL = VSDR = GND | 5 |
| Logic Input High Voltage | VIH | 1.4 |  |  | V |  | 5 |
| Logic Input Low Voltage | VIL |  |  | 0.4 | V |  | 5 |
| Switching Frequency | fSW |  | 300 | 390 | kHz | SS/FF = VDD (Spread Spectrum) | 5 |
| Gain | AV | 5.5 | 6 | 6.5 | dB | G0, G1 = GND, RL = ∞ | 5 |
| Gain | AV | 11.5 | 12 | 12.5 | dB | G0 = VDD, G1 = GND | 5 |
| Gain | AV | 17.5 | 18 | 18.5 | dB | G0 = GND, G1 = VDD | 5 |
| Gain | AV | 23.5 | 24 | 24.5 | dB | G0, G1 = VDD | 5 |
| Output Power (Per Channel) | PO | 600 | 740 |  | mW | RL = 15μH + 8Ω + 15μH, THD ≤ 10%, f = 1kHz, 22kHz BW, VDD = 3.6V | 6 |
| Thermal Resistance junction-to-case | θJC |  | 5.3 |  | °C/W |  | 4 |
| Thermal Resistance junction-to-ambient | θJA |  | 36.5 |  | °C/W |  | 4 |

## CAD (KiCad official)

- Symbol: `LM48410SQX`
- Footprint: `Package_DFN_QFN:QFN-24-1EP_4x4mm_P0.5mm_EP2.6x2.6mm`
- 3D model: WQFN-24(4x4) (KiCad packages3D, STEP)
- 3D model files: `lm48410sqx-etched.step` / `lm48410sqx-etched.glb` carry the MPN laser-etched on the die in a toggleable `Adom.LaserEtch` group (Fusion-ready); `lm48410sqx.step` / `lm48410sqx.glb` are the bare package body.

## Provenance

Data extracted from the manufacturer datasheet, not a distributor listing:

- **Datasheet:** [Texas Instruments datasheet](https://www.ti.com/cn/lit/gpn/lm48410) (25 pp, sha256 `bc34cb0a14168d3e`, retrieved 2026-10-31, tier: manufacturer)
- **Extractor:** parts-factory `2.0.0` / `extract_pins 0.3`, primary `claude-haiku-5-5` (text), consensus `claude-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).

[Datasheet PDF](docs/lm48410sqx-datasheet.pdf)