component
RT8511BGQW
Public Made by Adomby adom
Richtek Tech LED Drivers, DFN-8-EP(2x2). Pinout cross-checked by two models against the datasheet, KiCad symbol/footprint/3D.
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RT8511BGQW
Richtek Tech · LED Drivers · DFN-8-EP(2x2)
RT8511BGQW from Richtek Tech, in a DFN-8-EP(2x2). 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 | OVP | input | Over-voltage protection sense input for the boost converter with a detecting threshold of 1.2V (1.14V to 1.26V). |
| 2 | FB | input | Feedback pin regulated to 200mV typ.; connect a resistor between this pin and GND to set the LED current. |
| 3 | DIMC | passive | PWM filter pin that filters the PWM signal to a DC voltage using an external capacitor (1µF typical). |
| 4 | GND | power_in | Ground. |
| 5 | LX | passive | Switch node of the boost converter, internal N-MOSFET rated -0.3V to 48V with 2.2A typ. current limit. |
| 6 | VIN | power_in | Power supply input, operating range 2.7V to 24V (absolute maximum 26.5V). |
| 7 | PWM | input | Dimming control input accepting a 100Hz to 8kHz PWM signal, logic high 1.6V min and logic low 0.8V max. |
| 8 | EN | input | Active-high chip enable for the boost converter, logic high 1.6V min and logic low 0.8V max. |
| 9 | GND | power_in | Exposed pad, must be soldered to a large PCB and connected to AGND for maximum power dissipation. |
Key specifications
| Parameter | Value |
|---|---|
| Manufacturer | Richtek Tech |
| Package | DFN-8-EP(2x2) |
| Category | Display Modules / LED Drivers / Display Drivers |
| 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 |
|---|---|---|---|---|---|---|---|
| VIN Shutdown Current | ISHDN | 1 | 4 | µA | VIN = 4.5V, VEN = 0V | 4 | |
| EN, PWM Logic-High Threshold Voltage | VIH | 1.6 | V | VIN = 2.7V to 24V | 4 | ||
| EN, PWM Logic-Low Threshold Voltage | VIL | 0.8 | V | VIN = 2.7V to 24V | 4 | ||
| EN Sink Current | IIH | 1 | 10 | µA | VEN = 3V | 4 | |
| Shutdown Delay | tSHDN | 52 | 64 | 80 | ms | EN high to low | 4 |
| PWM Dimming Frequency | 0.1 | 8 | kHz | 4 | |||
| Switching Frequency | fOSC | 0.4 | 0.5 | 0.6 | MHz | VIN = 2.7V to 24V | 4 |
| LX On Resistance (N-MOSFET) | RDS(ON) | 0.4 | 0.6 | Ω | VIN > 5V | 4 | |
| Minimum Duty Cycle for PWM Dimming | DMIN | 1 | % | Dimming Freq. = 100Hz to 8kHz | 5 | ||
| Feedback Voltage | VFB | 195 | 200 | 205 | mV | 5 | |
| LX Current Limit | ILIM | 1.66 | 2.2 | 2.74 | A | 5 | |
| Over Voltage Protection Threshold | VOVP | 1.14 | 1.2 | 1.26 | V | 5 | |
| VIN Quiescent Current (switching) | IQ_SW | 2.2 | mA | VFB = 0V, Switching | 4 | ||
| VIN Quiescent Current | IQ | 725 | µA | VFB = 1.5V, No Switching | 4 | ||
| Minimum ON Time | 60 | ns | 4 | ||||
| Maximum Duty Cycle | DMAX | 92 | % | VFB = 0V, Switching | 4 | ||
| Thermal Shutdown Temperature | TSD | 160 | °C | 5 | |||
| Thermal Shutdown Hysteresis | TSD | 30 | °C | 5 | |||
| Supply Input Voltage | VIN | 2.7 | 24 | V | 4 | ||
| Junction Temperature Range | TJ | -40 | 125 | °C | 4 | ||
| Ambient Temperature Range | TA | -40 | 85 | °C | 4 | ||
| VIN, EN, PWM, DIMC to GND | -0.3 | 26.5 | V | 4 | |||
| FB, OVP to GND | -0.3 | 48 | V | 4 | |||
| LX to GND | -0.3 | 48 | V | 4 | |||
| LX to GND (< 500ns) | -1 | 48 | V | < 500ns | 4 | ||
| Power Dissipation | PD | 0.833 | W | TA = 25°C, WDFN-8L 2x2 | 4 | ||
| Lead Temperature | 260 | °C | Soldering, 10 sec. | 4 | |||
| Junction Temperature | TJ | 150 | °C | 4 | |||
| Storage Temperature Range | -65 | 150 | °C | 4 | |||
| ESD HBM | 2 | kV | Human Body Model | 4 | |||
| ESD MM | 200 | V | Machine Model | 4 | |||
| Thermal Resistance Junction to Ambient | θJA | 120 | °C/W | WDFN-8L 2x2, JEDEC 51-7 four-layer board, TA = 25°C | 4 | ||
| Thermal Resistance Junction to Case | θJC | 8.2 | °C/W | WDFN-8L 2x2, measured at exposed pad | 4 |
CAD (KiCad official)
- Symbol:
RT8511BGQW - Footprint:
Package_DFN_QFN:DFN-8-1EP_2x2mm_P0.5mm_EP0.6x1.2mm - 3D model: DFN-8-EP(2x2) (KiCad packages3D, STEP)
- 3D model files:
rt8511bgqw-etched.step/rt8511bgqw-etched.glbcarry the MPN laser-etched on the die in a toggleableAdom.LaserEtchgroup (Fusion-ready);rt8511bgqw.step/rt8511bgqw.glbare the bare package body.
Provenance
Data extracted from the manufacturer datasheet, not a distributor listing:
- Datasheet: Richtek Tech datasheet (11 pp, sha256
029c4557cdff90a7, retrieved 2026-10-22, 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).
# RT8511BGQW
**Richtek Tech** · LED Drivers · DFN-8-EP(2x2)
RT8511BGQW from Richtek Tech, in a DFN-8-EP(2x2). 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 | OVP | input | Over-voltage protection sense input for the boost converter with a detecting threshold of 1.2V (1.14V to 1.26V). |
| 2 | FB | input | Feedback pin regulated to 200mV typ.; connect a resistor between this pin and GND to set the LED current. |
| 3 | DIMC | passive | PWM filter pin that filters the PWM signal to a DC voltage using an external capacitor (1µF typical). |
| 4 | GND | power_in | Ground. |
| 5 | LX | passive | Switch node of the boost converter, internal N-MOSFET rated -0.3V to 48V with 2.2A typ. current limit. |
| 6 | VIN | power_in | Power supply input, operating range 2.7V to 24V (absolute maximum 26.5V). |
| 7 | PWM | input | Dimming control input accepting a 100Hz to 8kHz PWM signal, logic high 1.6V min and logic low 0.8V max. |
| 8 | EN | input | Active-high chip enable for the boost converter, logic high 1.6V min and logic low 0.8V max. |
| 9 | GND | power_in | Exposed pad, must be soldered to a large PCB and connected to AGND for maximum power dissipation. |
## Key specifications
| Parameter | Value |
|---|---|
| Manufacturer | Richtek Tech |
| Package | DFN-8-EP(2x2) |
| Category | Display Modules / LED Drivers / Display Drivers |
| 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 |
|---|---|---|---|---|---|---|---|
| VIN Shutdown Current | ISHDN | | 1 | 4 | µA | VIN = 4.5V, VEN = 0V | 4 |
| EN, PWM Logic-High Threshold Voltage | VIH | 1.6 | | | V | VIN = 2.7V to 24V | 4 |
| EN, PWM Logic-Low Threshold Voltage | VIL | | | 0.8 | V | VIN = 2.7V to 24V | 4 |
| EN Sink Current | IIH | 1 | | 10 | µA | VEN = 3V | 4 |
| Shutdown Delay | tSHDN | 52 | 64 | 80 | ms | EN high to low | 4 |
| PWM Dimming Frequency | | 0.1 | | 8 | kHz | | 4 |
| Switching Frequency | fOSC | 0.4 | 0.5 | 0.6 | MHz | VIN = 2.7V to 24V | 4 |
| LX On Resistance (N-MOSFET) | RDS(ON) | | 0.4 | 0.6 | Ω | VIN > 5V | 4 |
| Minimum Duty Cycle for PWM Dimming | DMIN | 1 | | | % | Dimming Freq. = 100Hz to 8kHz | 5 |
| Feedback Voltage | VFB | 195 | 200 | 205 | mV | | 5 |
| LX Current Limit | ILIM | 1.66 | 2.2 | 2.74 | A | | 5 |
| Over Voltage Protection Threshold | VOVP | 1.14 | 1.2 | 1.26 | V | | 5 |
| VIN Quiescent Current (switching) | IQ_SW | | | 2.2 | mA | VFB = 0V, Switching | 4 |
| VIN Quiescent Current | IQ | | 725 | | µA | VFB = 1.5V, No Switching | 4 |
| Minimum ON Time | | | 60 | | ns | | 4 |
| Maximum Duty Cycle | DMAX | | 92 | | % | VFB = 0V, Switching | 4 |
| Thermal Shutdown Temperature | TSD | | 160 | | °C | | 5 |
| Thermal Shutdown Hysteresis | TSD | | 30 | | °C | | 5 |
| Supply Input Voltage | VIN | 2.7 | | 24 | V | | 4 |
| Junction Temperature Range | TJ | -40 | | 125 | °C | | 4 |
| Ambient Temperature Range | TA | -40 | | 85 | °C | | 4 |
| VIN, EN, PWM, DIMC to GND | | -0.3 | | 26.5 | V | | 4 |
| FB, OVP to GND | | -0.3 | | 48 | V | | 4 |
| LX to GND | | -0.3 | | 48 | V | | 4 |
| LX to GND (< 500ns) | | -1 | | 48 | V | < 500ns | 4 |
| Power Dissipation | PD | | | 0.833 | W | TA = 25°C, WDFN-8L 2x2 | 4 |
| Lead Temperature | | | | 260 | °C | Soldering, 10 sec. | 4 |
| Junction Temperature | TJ | | | 150 | °C | | 4 |
| Storage Temperature Range | | -65 | | 150 | °C | | 4 |
| ESD HBM | | | | 2 | kV | Human Body Model | 4 |
| ESD MM | | | | 200 | V | Machine Model | 4 |
| Thermal Resistance Junction to Ambient | θJA | | 120 | | °C/W | WDFN-8L 2x2, JEDEC 51-7 four-layer board, TA = 25°C | 4 |
| Thermal Resistance Junction to Case | θJC | | 8.2 | | °C/W | WDFN-8L 2x2, measured at exposed pad | 4 |
## CAD (KiCad official)
- Symbol: `RT8511BGQW`
- Footprint: `Package_DFN_QFN:DFN-8-1EP_2x2mm_P0.5mm_EP0.6x1.2mm`
- 3D model: DFN-8-EP(2x2) (KiCad packages3D, STEP)
- 3D model files: `rt8511bgqw-etched.step` / `rt8511bgqw-etched.glb` carry the MPN laser-etched on the die in a toggleable `Adom.LaserEtch` group (Fusion-ready); `rt8511bgqw.step` / `rt8511bgqw.glb` are the bare package body.
## Provenance
Data extracted from the manufacturer datasheet, not a distributor listing:
- **Datasheet:** [Richtek Tech datasheet](docs/rt8511bgqw-datasheet.pdf) (11 pp, sha256 `029c4557cdff90a7`, retrieved 2026-10-22, tier: manufacturer)
- **Extractor:** parts-factory `2.0.0` / `extract_pins 0.3`, primary `claude-sonnet-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/rt8511bgqw-datasheet.pdf)