component
CAT3224HV3-GT2
Public Made by Adomby adom
onsemi LED Drivers, TQFN-16-EP(3x3). Pinout cross-checked by two models against the datasheet, KiCad symbol/footprint/3D.
Generated by kicad-footprint-generator · KiCad file format 20260206
CAT3224HV3-GT2
onsemi · LED Drivers · TQFN-16-EP(3x3)
CAT3224HV3-GT2 from onsemi, in a TQFN-16-EP(3x3). 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 | RF | passive | Flash current setting resistor terminal; voltage regulated to 0.6 V in flash mode (FLASH high), with 3.5 mA typical current limit. |
| 2 | BAL | bidirectional | Active supercapacitor balance control connected to the center-point between the two supercapacitor cells, forced to half of the CAP voltage. |
| 3 | CAP | bidirectional | Supercapacitor positive connection; current sinks or sources from this pin to the capacitor depending on the mode of operation. |
| 4 | CAP | bidirectional | Supercapacitor positive connection; current sinks or sources from this pin to the capacitor depending on the mode of operation. |
| 5 | CHRG | input | Charge supercapacitor enable; when high, the 1x/2x charge pump is enabled and charges the supercapacitor (logic high 1.3 V min, low 0.4 V max, 150 k internal pull-down). |
| 6 | FLASH | input | Flash enable; when high the LED current sources are enabled in flash mode, and they are disabled automatically if FLASH stays high longer than 300 ms typical. |
| 7 | TORCH | input | Torch enable; when high the LED current sources are enabled in torch mode. |
| 8 | FLAG | output | Flash ready flag, active-low open-drain output that pulls low when the supercapacitor is fully charged and needs an external pull-up to a positive rail. |
| 9 | LEDB | passive | LED B channel anode (+) connection to an internal current source, independently regulated and high-impedance in shutdown or when FLASH and TORCH are low. |
| 10 | LEDA | passive | LED A channel anode (+) connection to an internal current source, independently regulated and high-impedance in shutdown or when FLASH and TORCH are low. |
| 11 | RC | passive | Charge current setting resistor terminal setting the VIN current limit in charge mode; regulated to 0.6 V when CHRG is high. |
| 12 | RT | passive | Torch current setting resistor terminal; voltage regulated to 0.6 V in torch mode (TORCH high). |
| 13 | VIN | power_in | Positive supply connection to the battery for the device and supercapacitor charger (2.0 to 5.5 V recommended), requiring a 1 µF ceramic bypass capacitor to ground. |
| 14 | CP | passive | Positive terminal of the ceramic bucket capacitor used in 2x charge pump mode. |
| 15 | CN | passive | Negative terminal of the ceramic bucket capacitor used in 2x charge pump mode. |
| 16 | GND | power_in | Device ground reference for the charge pump; must be connected to the PCB ground plane. |
| 17 | EP | passive | Exposed pad (from the footprint; not named in the datasheet pin table). |
Key specifications
| Parameter | Value |
|---|---|
| Manufacturer | onsemi |
| Package | TQFN-16-EP(3x3) |
| Category | Display Modules / LED Drivers / Display Drivers |
| Pins | 17 |
Electrical characteristics
Limits as printed in the datasheet (page.json metadata.characteristics carries them as data).
| Parameter | Symbol | Min | Typ | Max | Unit | Conditions | Page |
|---|---|---|---|---|---|---|---|
| VIN, RC, RF, RT voltage | -0.3 | 6 | V | GND−0.3 to 6 | 2 | ||
| CAP, CP, CN voltage | -0.3 | 7 | V | GND−0.3 to 7 | 2 | ||
| CHRG, FLASH, TORCH, FLAG voltage | -0.3 | 6 | V | GND−0.3 to 6 | 2 | ||
| Storage Temperature Range | -65 | 160 | °C | 2 | |||
| Junction Temperature Range | -40 | 150 | °C | 2 | |||
| Lead Temperature | 300 | °C | 2 | ||||
| ESD Rating HBM | 2000 | V | Human Body Model | 2 | |||
| ESD Rating MM | 200 | V | Machine Model | 2 | |||
| Operating supply voltage | VIN | 2 | 5.5 | V | 2 | ||
| Ambient Temperature Range | -40 | 85 | °C | 2 | |||
| LEDA, LEDB current (flash mode) | 2 | A | flash mode | 2 | |||
| LEDA, LEDB current (torch mode) | 10 | 200 | mA | torch mode | 2 | ||
| Input Current Limit | 1 | A | 2 | ||||
| FLAG pull-up resistor current | 0 | 10 | mA | 2 | |||
| LED Forward Voltage Range | Vf | 1.3 | 4.2 | V | 2 | ||
| Thermal impedance junction to ambient | θJA | 42 | °C/W | TQFN 3x3 16-lead, 2 sq in copper on exposed pad | 2 | ||
| Transient thermal impedance | θJA | 7 | °C/W | 100 ms pulse at 5 W, 2 sq in copper | 2 | ||
| RSET Regulated Voltage | VRX | 0.59 | 0.6 | 0.61 | V | IRX = 0.1 mA | 3 |
| Active Balance Control (VCAP / 2) | VBAL | -2 | 2 | % | ±5 mA Load on BAL | 3 | |
| Quiescent Current on VIN pin, CAP charged & idle | IQVIN | 80 | µA | CAP Charged & idle | 3 | ||
| Quiescent Current on VIN pin, charging 2x mode | IQVIN | 6 | mA | CAP Charging 2x Mode | 3 | ||
| Quiescent Current on CAP pin, charged & idle | IQCAP | 10 | µA | CAP Charged & idle | 3 | ||
| Quiescent Current on CAP pin, shutdown | IQCAP | 3 | µA | Shutdown mode | 3 | ||
| Quiescent Current on CAP pin, shutdown VIN = 0 V | IQCAP | 3 | µA | Shutdown, VIN = 0 V | 3 | ||
| Shutdown Current | IQSHDN | 1 | µA | CHRG = FLASH = TORCH = 0 V | 3 | ||
| Flash Gain (IFLASH / IRF) | GFLASH | 900 | IFLASH = 2 A | 3 | |||
| Torch Gain (ITORCH / IRT) | GTORCH | 120 | ITORCH = 200 mA | 3 | |||
| Input Current Limit Gain (ICHRG / IRC) | GCHARGE | 400 | ICHARGE = 400 mA | 3 | |||
| Rset Current limit | IRX_MAX | 3.5 | mA | VRX = 0 V | 3 | ||
| Input current limit in charge mode | IIN_MAX | 1.4 | A | VRC = 0 V | 3 | ||
| CAP Charge off voltage | VC_OFF | 5.4 | V | RC = 2 k | 3 | ||
| CAP Charge Hysteresis | VC_HYST | 0.2 | V | 3 | |||
| CAP voltage FLAG pulled low | VF_ON | 5.2 | V | 3 | |||
| CAP voltage FLAG Hysteresis | VF_HYST | 0.2 | V | 3 | |||
| LEDA/B Combined Dropout Resistance | RLEDAB | 110 | mΩ | IFLASHAB = 4 A | 3 | ||
| Charge Mode Resistance 1x mode | RCP | 2 | Ω | 1x mode | 3 | ||
| Charge Mode Resistance 2x mode | RCP | 4 | Ω | 2x mode, VIN = 3.5 V | 3 | ||
| Charge Pump Frequency | FOSC | 800 | kHz | 3 | |||
| Flash Timeout Duration | TFLASH | 300 | ms | 3 | |||
| Flag low voltage threshold (Open Drain) | VFLAG | 0.2 | V | FLAG Driven low 100 µA pull-up | 3 | ||
| CHRG, FLASH, TORCH Pin Internal Pull-down Resistor | REN | 150 | kΩ | 3 | |||
| CHRG, FLASH, TORCH Logic High Level | VEHI | 1.3 | V | 3 | |||
| CHRG, FLASH, TORCH Logic Low Level | VELO | 0.4 | V | 3 | |||
| Thermal Shutdown | TSD | 150 | °C | 3 | |||
| Thermal Hysteresis | THYS | 20 | °C | 3 | |||
| Undervoltage lockout threshold | VUVLO | 1.9 | V | 3 |
Materials and finish
As the datasheet states them (page.json metadata.appearance; the 3D model's colours follow it).
| Part | Material | Colour / plating | Datasheet says | Page |
|---|---|---|---|---|
| contacts | copper | 1. Pins can be driven above VIN with no leakage current or change in operation. 2. JA (Junction to Ambient thermal resistance) is calculated with 2 square inches of copper connected to package expose | 2 |
CAD (KiCad official)
- Symbol:
CAT3224HV3-GT2 - Footprint:
Package_DFN_QFN:QFN-16-1EP_3x3mm_P0.5mm_EP1.7x1.7mm - 3D model: TQFN-16-EP(3x3) (KiCad packages3D, STEP)
- 3D model files:
cat3224hv3-gt2-etched.step/cat3224hv3-gt2-etched.glbcarry the MPN laser-etched on the die in a toggleableAdom.LaserEtchgroup (Fusion-ready);cat3224hv3-gt2.step/cat3224hv3-gt2.glbare the bare package body.
Provenance
Data extracted from the manufacturer datasheet, not a distributor listing:
- Datasheet: onsemi datasheet (14 pp, sha256
cc1c8fb045a0891c, retrieved 2026-10-23, tier: manufacturer) - Extractor: parts-factory
2.0.0/extract_pins 0.3, primaryclaude-sonnet-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).