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BCT3288AEGG-TR
Public Made by Adomby adom
BROADCHIP LED Drivers, QFN-24-EP(4x4). 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
markdownBCT3288AEGG-TR
BROADCHIP · LED Drivers · QFN-24-EP(4x4)
BCT3288AEGG-TR from BROADCHIP, in a QFN-24-EP(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 | NC | unconnected | No internal connection; leave this pin unconnected. |
| 2 | REXT | passive | Current-setting reference pin; a resistor between REXT and GND sets the maximum per-channel output current via Io(max)=0.4*200/REXT (2 kΩ gives 40 mA, 4 kΩ gives 20 mA). |
| 3 | VDD | power_in | Battery supply pin for the internal control logic and analog blocks, specified for 2.7 V to 5.5 V operation (absolute maximum -0.3 V to 5.5 V). |
| 4 | GND | power_in | Ground pin; the REXT setting resistor connects between REXT and this pin. |
| 5 | SPIDATA | input | Serial data input of the three-wire write-only SPI interface, 16-bit words (high byte register address, low byte data), with input-high minimum 1.4 V, input-low maximum 0.7 V, and setup 4 ns / hold 20 ns relative to SPICK. |
| 6 | SPICK | input | Serial clock input of the SPI interface; data is sampled on the rising edge, with the clock low when idle. |
| 7 | SPICS | input | Active-low chip select of the SPI interface; it is held low while a 16-bit command is shifted in and returned high to latch it. |
| 8 | OUT0 | output | Constant-current output channel 0, rated up to 40 mA per channel (absolute maximum). |
| 9 | OUT1 | output | Constant-current output channel 1, rated up to 40 mA per channel (absolute maximum). |
| 10 | OUT2 | output | Constant-current output channel 2, rated up to 40 mA per channel (absolute maximum). |
| 11 | OUT3 | output | Constant-current output channel 3, rated up to 40 mA per channel (absolute maximum). |
| 12 | OUT4 | output | Constant-current output channel 4, rated up to 40 mA per channel (absolute maximum). |
| 13 | OUT5 | output | Constant-current output channel 5, rated up to 40 mA per channel (absolute maximum). |
| 14 | OUT6 | output | Constant-current output channel 6, rated up to 40 mA per channel (absolute maximum). |
| 15 | OUT7 | output | Constant-current output channel 7, rated up to 40 mA per channel (absolute maximum). |
| 16 | OUT8 | output | Constant-current output channel 8, rated up to 40 mA per channel (absolute maximum). |
| 17 | OUT9 | output | Constant-current output channel 9, rated up to 40 mA per channel (absolute maximum). |
| 18 | OUT10 | output | Constant-current output channel 10, rated up to 40 mA per channel (absolute maximum). |
| 19 | OUT11 | output | Constant-current output channel 11, rated up to 40 mA per channel (absolute maximum). |
| 20 | OUT12 | output | Constant-current output channel 12, rated up to 40 mA per channel (absolute maximum). |
| 21 | OUT13 | output | Constant-current output channel 13, rated up to 40 mA per channel (absolute maximum). |
| 22 | OUT14 | output | Constant-current output channel 14, rated up to 40 mA per channel (absolute maximum). |
| 23 | OUT15 | output | Constant-current output channel 15, rated up to 40 mA per channel (absolute maximum). |
| 24 | NC | unconnected | No internal connection; leave this pin unconnected. |
| 25 | EP | passive | Exposed pad (from the footprint; not named in the datasheet pin table). |
Key specifications
| Parameter | Value |
|---|---|
| Manufacturer | BROADCHIP |
| Package | QFN-24-EP(4x4) |
| Category | Nixie Tube Driver/LED Driver |
| 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 (absolute maximum) | VDD | -0.3 | 5.5 | V | 2 | ||
| OUTx current, any single channel (absolute maximum) | IO | 40 | mA | 2 | |||
| Input voltage range, SPI pins | VI | -0.3 | V | 2 | |||
| Operating temperature range | TA | -40 | 85 | ℃ | 2 | ||
| Maximum junction temperature | TJ(max) | 150 | ℃ | 2 | |||
| Storage temperature range | Tstg | -55 | 150 | ℃ | 2 | ||
| Operating supply voltage | VDD | 2.7 | 5.5 | V | 工作 | 4 | |
| Supply current | IVDD | 1.6 | 2 | mA | REXT=4K, Out0~Out15 不接, VDD=5.5V | 4 | |
| Shutdown current | ISHUT | 2 | uA | 系统进入关断模式, VDD=5.5V | 4 | ||
| Output current accuracy | IO | 35 | 40 | 45 | mA | REXT=2K，Vdropout=1V | 4 |
| Output current accuracy | IO | 18 | 20 | 22 | mA | REXT=4K，Vdropout=1V | 4 |
| Output current matching | -3 | 3 | % | REXT=2K，Vdropout =1V ，IO=40mA | 4 | ||
| Dropout voltage | Vdrop | 400 | 500 | mV | VDD=3.3V ， IO=40mA | 4 | |
| Dropout voltage | Vdrop | 300 | 500 | mV | VDD=3.3V ， IO=20mA | 4 | |
| Input high-level voltage | VIH | 1.4 | V | 4 | |||
| Input low-level voltage | VIL | 0.7 | V | 4 | |||
| SPIDATA setup time to SPICK | Ts | 4 | ns | 5 | |||
| SPIDATA hold time to SPICK | Th | 20 | ns | 5 |
CAD (KiCad official)
- Symbol:
BCT3288AEGG-TR - Footprint:
Package_DFN_QFN:QFN-24-1EP_4x4mm_P0.5mm_EP2.7x2.7mm - 3D model: QFN-24-EP(4x4) (KiCad packages3D, STEP)
- 3D model files:
bct3288aegg-tr-etched.step/bct3288aegg-tr-etched.glbcarry the MPN laser-etched on the die in a toggleableAdom.LaserEtchgroup (Fusion-ready);bct3288aegg-tr.step/bct3288aegg-tr.glbare the bare package body.
Provenance
Data extracted from the manufacturer datasheet, not a distributor listing:
- Datasheet: BROADCHIP datasheet (9 pp, sha256
fe4e6605d1ff12f3, retrieved 2026-10-19, tier: lcsc) - Datasheet language: Chinese. Pin names, descriptions, and specs on this page were extracted and translated to English by ds2sf; the linked PDF is the manufacturer original.
- 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).