component
BL6306SO
Public Made by Adomby adom
BL Shanghai Belling Audio Amplifiers, SOP-8. 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
markdownBL6306SO
BL Shanghai Belling · Audio Amplifiers · SOP-8
BL6306SO from BL Shanghai Belling, in a SOP-8. 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 | SDB | input | Active-low shutdown terminal; the datasheet gives a shutdown input high threshold of 1.3 V and input low threshold of 0.4 V, with an internal 300 kΩ resistance from SDB to GND. |
| 2 | NC | unconnected | No internal connection; the datasheet specifies no function for this pin. |
| 3 | IN+ | input | Positive differential input with 135 kΩ to 165 kΩ input impedance (150 kΩ typical); in differential use the signal should be biased between 0.5 V and VDD − 0.8 V, otherwise an input coupling capacitor is required. |
| 4 | IN- | input | Negative differential input with 135 kΩ to 165 kΩ input impedance (150 kΩ typical); it should be matched to IN+ with 1% resistors for best CMRR, PSRR and second-harmonic cancellation. |
| 5 | VO+ | output | Positive BTL (bridge-tied load) speaker output driven by the internal class-D PWM power stage. |
| 6 | VDD | power_in | Power supply input; the datasheet specifies a supply range of 2.5 V to 5.5 V and recommends a low-ESR 2 µF decoupling capacitor placed as close as possible to this pin. |
| 7 | PGND | power_in | Power ground for the class-D output stage, to be returned close to the VDD decoupling capacitor. |
| 8 | VO- | output | Negative BTL (bridge-tied load) speaker output driven by the internal class-D PWM power stage. |
Key specifications
| Parameter | Value |
|---|---|
| Manufacturer | BL Shanghai Belling |
| Package | SOP-8 |
| Category | Amplifiers/Comparators |
| Pins | 8 |
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 | -0.3 | 6 | V | 4 | |||
| Input Voltage | -0.3 | V | 4 | ||||
| Storage Temperature | -65 | 150 | ℃ | 4 | |||
| Operating Temperature Range | -40 | 85 | ℃ | 4 | |||
| Quiescent Current | IQ | 2.2 | 3.2 | mA | VDD = 2.5V, VIN = 0V, No Load | 4 | |
| Quiescent Current | IQ | 3.8 | 8 | mA | VDD = 5.5V, VIN = 0V, No Load | 4 | |
| Output Offset Voltage | VOS | 2 | 25 | mV | VIN = 0V, AV = 2V/V, VDD = 2.5V to 5.5V | 4 | |
| Shutdown Current | ISD | 0.4 | 2 | uA | VIN=0V, VSDB=0V, No Load | 4 | |
| Modulation frequency | FSW | 200 | 250 | 300 | kHz | VDD = 2.5V to 5.5V | 4 |
| Input impedance | ZI | 135 | 150 | 165 | kΩ | 4 | |
| Shutdown Voltage Input High | VSDIH | 1.3 | V | 4 | |||
| Shutdown Voltage Input Low | VSDIL | 0.4 | V | 4 | |||
| Quiescent Current | IQ | 2.6 | mA | VDD = 3.6V, VIN = 0V, No Load | 4 | ||
| Power Supply Rejection Ratio | PSRR | -75 | dB | VDD = 2.5V to 5.5V | 4 | ||
| Common Mode Rejection Ratio | CMRR | -68 | dB | VDD = 2.5V to 5.5V, VIC = VDD/2 to 0.5V, VIC = VDD/2 to VDD - 0.8V | 4 | ||
| Resistance from SDB to GND | RSDB | 300 | kΩ | 4 | |||
| Wake-up time from shutdown | TWU | 32 | mS | VDD = 3.6V | 4 | ||
| Drain-Source resistance (on-state) | rDS(on) | 700 | mΩ | VDD = 2.5V | 4 | ||
| Drain-Source resistance (on-state) | rDS(on) | 500 | mΩ | VDD = 3.6V | 4 | ||
| Drain-Source resistance (on-state) | rDS(on) | 400 | mΩ | VDD = 5.5V | 4 | ||
| Output Power | PO | 2.6 | W | VDD = 5V, RI = 150kΩ, TA = 25℃; THD+N=10%, f=1KHz, RL = 4Ω | 5 | ||
| Output Power | PO | 2.1 | W | VDD = 5V, RI = 150kΩ, TA = 25℃; THD+N=1%, f=1KHz, RL = 4Ω | 5 | ||
| Output Power | PO | 1.6 | W | VDD = 5V, RI = 150kΩ, TA = 25℃; THD+N=10%, f=1KHz, RL = 8Ω | 5 | ||
| Output Power | PO | 1.3 | W | VDD = 5V, RI = 150kΩ, TA = 25℃; THD+N=1%, f=1KHz, RL = 8Ω | 5 | ||
| Total Harmonic Distortion + Noise | THD+N | 0.21 | % | VDD = 5V, RI = 150kΩ, TA = 25℃; Po=1.0Wrms, f=1kHz, RL = 8Ω | 5 | ||
| Signal-to-Noise ratio | SNR | 91 | dB | VDD = 5V, RI = 150kΩ, TA = 25℃; Po=1.0Wrms, RL = 8Ω | 5 | ||
| Output Power | PO | 1.35 | W | VDD = 3.6V, RI = 150kΩ, TA = 25℃; THD+N=10%, f=1KHz, RL = 4Ω | 5 | ||
| Output Power | PO | 1.08 | W | VDD = 3.6V, RI = 150kΩ, TA = 25℃; THD+N=1%, f=1KHz, RL = 4Ω | 5 | ||
| Output Power | PO | 0.85 | W | VDD = 3.6V, RI = 150kΩ, TA = 25℃; THD+N=10%, f=1KHz, RL = 8Ω | 5 | ||
| Output Power | PO | 0.69 | W | VDD = 3.6V, RI = 150kΩ, TA = 25℃; THD+N=1%, f=1KHz, RL = 8Ω | 5 | ||
| Supply ripple rejection ratio | KSVR | -65 | dB | VDD = 3.6V, input ac-grounded with CI = 2uF, f=217Hz, V(Ripple)=200mVPP | 5 | ||
| Output voltage noise (no weighting) | Vn | 100 | uVRMS | VDD = 3.6V, input ac-grounded with CI = 2uF, f=20~20kHz, No weighting | 5 | ||
| Output voltage noise (A weighting) | Vn | 75 | uVRMS | VDD = 3.6V, input ac-grounded with CI = 2uF, f=20~20kHz, A weighting | 5 | ||
| Common Mode Rejection Ratio | CMRR | -70 | dB | VDD = 3.6V, VIC = 1 VPP, f=217Hz | 5 | ||
| Output Power | PO | 0.6 | W | VDD = 2.5V, RI = 150kΩ, TA = 25℃; THD+N=10%, f=1KHz, RL = 4Ω | 5 | ||
| Output Power | PO | 0.51 | W | VDD = 2.5V, RI = 150kΩ, TA = 25℃; THD+N=1%, f=1KHz, RL = 4Ω | 5 | ||
| Output Power | PO | 0.4 | W | VDD = 2.5V, RI = 150kΩ, TA = 25℃; THD+N=10%, f=1KHz, RL = 8Ω | 5 | ||
| Output Power | PO | 0.33 | W | VDD = 2.5V, RI = 150kΩ, TA = 25℃; THD+N=1%, f=1KHz, RL = 8Ω | 5 |
CAD (KiCad official)
- Symbol:
BL6306SO - Footprint:
Package_SO:SOIC-8_3.9x4.9mm_P1.27mm - 3D model: SOP-8 (KiCad packages3D, STEP)
- 3D model files:
bl6306so-etched.step/bl6306so-etched.glbcarry the MPN laser-etched on the die in a toggleableAdom.LaserEtchgroup (Fusion-ready);bl6306so.step/bl6306so.glbare the bare package body.
Provenance
Data extracted from the manufacturer datasheet, not a distributor listing:
- Datasheet: BL Shanghai Belling datasheet (9 pp, sha256
a38d488abfb853a7, retrieved 2026-10-18, 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).