component
LM3409QHVMY
Public Made by Adomby adom
Texas Instruments LED Drivers, HVSSOP-10-EP-0.5mm. Pinout cross-checked by two models against the datasheet, KiCad symbol/footprint/3D.
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LM3409QHVMY
Texas Instruments · LED Drivers · HVSSOP-10-EP-0.5mm
LM3409QHVMY from Texas Instruments, in a HVSSOP-10-EP-0.5mm. 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 | UVLO | input | Input undervoltage lockout connects to a resistor divider from VIN and GND, with a turn-on threshold of 1.24 V and turnoff hysteresis provided by a 22 µA current source. |
| 2 | IADJ | input | Analog LED current adjust accepts a voltage from 0 to 1.24 V, or a resistor to GND, or can be left open to set the current sense threshold voltage. |
| 3 | EN | input | Logic level enable and PWM dimming input: a voltage above 1.74 V enables the device, and a voltage below 0.5 V gives low-power shutdown. |
| 4 | COFF | input | Off-time programming pin: a resistor from VO and a capacitor to GND set the off-time. |
| 5 | GND | power_in | Connect to system ground. |
| 6 | PGATE | output | Gate drive output connects to the gate of the external P-channel MOSFET, with a 2-Ω, 1-A peak gate drive. |
| 7 | CSN | input | Negative current sense connects to the negative side of the sense resistor. |
| 8 | CSP | input | Positive current sense connects to the positive side of the sense resistor and also to VIN. |
| 9 | VCC | power_out | VIN-referenced linear regulator output connects to VIN through at least a 1-µF ceramic capacitor and powers the P-channel MOSFET drive. |
| 10 | VIN | power_in | Input voltage connects to the input supply, with a VIN range of 6 V to 75 V for the LM3409HV-Q1 variant. |
| 11 | DAP | passive | Exposed pad (from the footprint; not named in the datasheet pin table). |
Key specifications
| Parameter | Value |
|---|---|
| Manufacturer | Texas Instruments |
| Package | HVSSOP-10-EP-0.5mm |
| Category | LED Drivers |
| Pins | 11 |
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, EN, UVLO to GND (LM3409HV, LM3409HV-Q1) | -0.3 | 76 | V | 4 | |||
| VIN to VCC, PGATE | -0.3 | 7 | V | 4 | |||
| VIN to PGATE | -2.8 | 9.5 | V | for 100 ns | 4 | ||
| VIN to CSP, CSN | -0.3 | 0.3 | V | 4 | |||
| COFF to GND | -0.3 | 4 | V | 4 | |||
| COFF current | -1 | 1 | mA | continuous | 4 | ||
| IADJ current | -5 | 5 | mA | continuous | 4 | ||
| Junction temperature | 150 | °C | 4 | ||||
| Lead temperature (soldering, 10 s) | 260 | °C | soldering, 10 s | 4 | |||
| Infrared and convection reflow | 260 | °C | 15 s | 4 | |||
| Storage temperature | Tstg | -65 | 125 | °C | 4 | ||
| VIN (LM3409HV, LM3409HV-Q1) | VIN | 6 | 75 | V | LM3409HV, LM3409HV-Q1 | 4 | |
| Junction temperature range | TJ | -40 | 125 | °C | 4 | ||
| Junction-to-ambient thermal resistance | RθJA | 54.4 | °C/W | DGQ (HVSSOP) 10 pins | 5 | ||
| Junction-to-case (top) thermal resistance | RθJC(top) | 53.7 | °C/W | DGQ (HVSSOP) 10 pins | 5 | ||
| Junction-to-board thermal resistance | RθJB | 33.8 | °C/W | DGQ (HVSSOP) 10 pins | 5 | ||
| Junction-to-top characterization parameter | ψJT | 3.9 | °C/W | DGQ (HVSSOP) 10 pins | 5 | ||
| Junction-to-board characterization parameter | ψJB | 33.5 | °C/W | DGQ (HVSSOP) 10 pins | 5 | ||
| Junction-to-case (bottom) thermal resistance | RθJC(bot) | 3.5 | °C/W | DGQ (HVSSOP) 10 pins | 5 | ||
| VCST peak current threshold | VCST | 188 | 198 | 208 | mV | VADJ = 1 V | 6 |
| VCST peak current threshold | VCST | 231 | 246 | 261 | mV | VADJ = VADJ-OC | 6 |
| VADJ-OC IADJ pin open circuit voltage | VADJ-OC | 1.189 | 1.243 | 1.297 | V | 6 | |
| IADJ pin current | IADJ | 3.8 | 5 | 6.4 | µA | 6 | |
| VCC VIN pin voltage - VCC pin voltage | VCC | 5.5 | 6 | 6.5 | V | VIN > 9 V; 0 < ICC < 20 mA | 6 |
| Off-time threshold | VOFT | 1.122 | 1.243 | 1.364 | V | 6 | |
| UVLO rising threshold | VUVLO-R | 1.175 | 1.243 | 1.311 | V | 6 | |
| EN pin threshold (rising) | VEN-TH | 1.74 | V | VEN rising | 6 | ||
| EN pin threshold (falling) | VEN-TH | 0.5 | V | VEN falling | 6 | ||
| VCC regulator current limit | ICC-LIM | 30 | 45 | mA | 6 | ||
| Minimum ON-time | tON-MIN | 115 | 211 | ns | 6 | ||
| Operating input current | IIN | 2 | mA | Not switching | 6 | ||
| Shutdown input current | ISD | 110 | µA | EN = 0 V | 6 | ||
| CSN pin falling delay | tDEL | 38 | ns | CSN fall - PGATE rise | 6 | ||
| Driver output resistance (sourcing) | RPGATE | 2 | Ω | Sourcing 50 mA | 6 | ||
| Driver output resistance (sinking) | RPGATE | 2 | Ω | Sinking 50 mA | 6 | ||
| VADJ to VCSP - VCSN threshold gain | AADJ | 0.2 | V/V | 0.1 < VADJ < 1.2 V; VADJ = VADJ-OC | 6 | ||
| VCC UVLO threshold | VCC-UVLO | 3.73 | V | VCC increasing | 6 | ||
| VCC UVLO hysteresis | VCC-HYS | 283 | mV | VCC decreasing | 6 | ||
| COFF threshold to PGATE falling delay | tD-OFF | 25 | ns | 6 | |||
| Maximum OFF-time | tOFF-MAX | 300 | µs | 6 | |||
| UVLO pin current | IUVLO | 10 | nA | VUVLO = 1 V | 6 | ||
| UVLO hysteresis current | IUVLO-HYS | 22 | µA | 6 | |||
| EN pin current | IEN | 10 | nA | 6 | |||
| EN pin hysteresis | VEN-HYS | 420 | mV | 6 | |||
| EN pin rising delay | tEN-R | 42 | ns | EN rise - PGATE fall | 6 | ||
| EN pin falling delay | tEN-F | 21 | ns | EN fall - PGATE rise | 6 |
CAD (KiCad official)
- Symbol:
LM3409QHVMY - Footprint:
Package_SO:MSOP-10-1EP_3x3mm_P0.5mm_EP1.68x1.88mm - 3D model: HVSSOP-10-EP-0.5mm (KiCad packages3D, STEP)
- 3D model files:
lm3409qhvmy-etched.step/lm3409qhvmy-etched.glbcarry the MPN laser-etched on the die in a toggleableAdom.LaserEtchgroup (Fusion-ready);lm3409qhvmy.step/lm3409qhvmy.glbare the bare package body.
Provenance
Data extracted from the manufacturer datasheet, not a distributor listing:
- Datasheet: Texas Instruments datasheet (47 pp, sha256
7745578a43302ee7, retrieved 2026-11-05, tier: manufacturer) - 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).
# LM3409QHVMY
**Texas Instruments** · LED Drivers · HVSSOP-10-EP-0.5mm
LM3409QHVMY from Texas Instruments, in a HVSSOP-10-EP-0.5mm. 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 | UVLO | input | Input undervoltage lockout connects to a resistor divider from VIN and GND, with a turn-on threshold of 1.24 V and turnoff hysteresis provided by a 22 µA current source. |
| 2 | IADJ | input | Analog LED current adjust accepts a voltage from 0 to 1.24 V, or a resistor to GND, or can be left open to set the current sense threshold voltage. |
| 3 | EN | input | Logic level enable and PWM dimming input: a voltage above 1.74 V enables the device, and a voltage below 0.5 V gives low-power shutdown. |
| 4 | COFF | input | Off-time programming pin: a resistor from VO and a capacitor to GND set the off-time. |
| 5 | GND | power_in | Connect to system ground. |
| 6 | PGATE | output | Gate drive output connects to the gate of the external P-channel MOSFET, with a 2-Ω, 1-A peak gate drive. |
| 7 | CSN | input | Negative current sense connects to the negative side of the sense resistor. |
| 8 | CSP | input | Positive current sense connects to the positive side of the sense resistor and also to VIN. |
| 9 | VCC | power_out | VIN-referenced linear regulator output connects to VIN through at least a 1-µF ceramic capacitor and powers the P-channel MOSFET drive. |
| 10 | VIN | power_in | Input voltage connects to the input supply, with a VIN range of 6 V to 75 V for the LM3409HV-Q1 variant. |
| 11 | DAP | passive | Exposed pad (from the footprint; not named in the datasheet pin table). |
## Key specifications
| Parameter | Value |
|---|---|
| Manufacturer | Texas Instruments |
| Package | HVSSOP-10-EP-0.5mm |
| Category | LED Drivers |
| Pins | 11 |
## 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, EN, UVLO to GND (LM3409HV, LM3409HV-Q1) | | -0.3 | | 76 | V | | 4 |
| VIN to VCC, PGATE | | -0.3 | | 7 | V | | 4 |
| VIN to PGATE | | -2.8 | | 9.5 | V | for 100 ns | 4 |
| VIN to CSP, CSN | | -0.3 | | 0.3 | V | | 4 |
| COFF to GND | | -0.3 | | 4 | V | | 4 |
| COFF current | | -1 | | 1 | mA | continuous | 4 |
| IADJ current | | -5 | | 5 | mA | continuous | 4 |
| Junction temperature | | | | 150 | °C | | 4 |
| Lead temperature (soldering, 10 s) | | | | 260 | °C | soldering, 10 s | 4 |
| Infrared and convection reflow | | | | 260 | °C | 15 s | 4 |
| Storage temperature | Tstg | -65 | | 125 | °C | | 4 |
| VIN (LM3409HV, LM3409HV-Q1) | VIN | 6 | | 75 | V | LM3409HV, LM3409HV-Q1 | 4 |
| Junction temperature range | TJ | -40 | | 125 | °C | | 4 |
| Junction-to-ambient thermal resistance | RθJA | | 54.4 | | °C/W | DGQ (HVSSOP) 10 pins | 5 |
| Junction-to-case (top) thermal resistance | RθJC(top) | | 53.7 | | °C/W | DGQ (HVSSOP) 10 pins | 5 |
| Junction-to-board thermal resistance | RθJB | | 33.8 | | °C/W | DGQ (HVSSOP) 10 pins | 5 |
| Junction-to-top characterization parameter | ψJT | | 3.9 | | °C/W | DGQ (HVSSOP) 10 pins | 5 |
| Junction-to-board characterization parameter | ψJB | | 33.5 | | °C/W | DGQ (HVSSOP) 10 pins | 5 |
| Junction-to-case (bottom) thermal resistance | RθJC(bot) | | 3.5 | | °C/W | DGQ (HVSSOP) 10 pins | 5 |
| VCST peak current threshold | VCST | 188 | 198 | 208 | mV | VADJ = 1 V | 6 |
| VCST peak current threshold | VCST | 231 | 246 | 261 | mV | VADJ = VADJ-OC | 6 |
| VADJ-OC IADJ pin open circuit voltage | VADJ-OC | 1.189 | 1.243 | 1.297 | V | | 6 |
| IADJ pin current | IADJ | 3.8 | 5 | 6.4 | µA | | 6 |
| VCC VIN pin voltage - VCC pin voltage | VCC | 5.5 | 6 | 6.5 | V | VIN > 9 V; 0 < ICC < 20 mA | 6 |
| Off-time threshold | VOFT | 1.122 | 1.243 | 1.364 | V | | 6 |
| UVLO rising threshold | VUVLO-R | 1.175 | 1.243 | 1.311 | V | | 6 |
| EN pin threshold (rising) | VEN-TH | | 1.74 | | V | VEN rising | 6 |
| EN pin threshold (falling) | VEN-TH | | 0.5 | | V | VEN falling | 6 |
| VCC regulator current limit | ICC-LIM | 30 | | 45 | mA | | 6 |
| Minimum ON-time | tON-MIN | | 115 | 211 | ns | | 6 |
| Operating input current | IIN | | 2 | | mA | Not switching | 6 |
| Shutdown input current | ISD | | 110 | | µA | EN = 0 V | 6 |
| CSN pin falling delay | tDEL | | 38 | | ns | CSN fall - PGATE rise | 6 |
| Driver output resistance (sourcing) | RPGATE | | 2 | | Ω | Sourcing 50 mA | 6 |
| Driver output resistance (sinking) | RPGATE | | 2 | | Ω | Sinking 50 mA | 6 |
| VADJ to VCSP - VCSN threshold gain | AADJ | | 0.2 | | V/V | 0.1 < VADJ < 1.2 V; VADJ = VADJ-OC | 6 |
| VCC UVLO threshold | VCC-UVLO | | 3.73 | | V | VCC increasing | 6 |
| VCC UVLO hysteresis | VCC-HYS | | 283 | | mV | VCC decreasing | 6 |
| COFF threshold to PGATE falling delay | tD-OFF | | 25 | | ns | | 6 |
| Maximum OFF-time | tOFF-MAX | | 300 | | µs | | 6 |
| UVLO pin current | IUVLO | | 10 | | nA | VUVLO = 1 V | 6 |
| UVLO hysteresis current | IUVLO-HYS | | 22 | | µA | | 6 |
| EN pin current | IEN | | 10 | | nA | | 6 |
| EN pin hysteresis | VEN-HYS | | 420 | | mV | | 6 |
| EN pin rising delay | tEN-R | | 42 | | ns | EN rise - PGATE fall | 6 |
| EN pin falling delay | tEN-F | | 21 | | ns | EN fall - PGATE rise | 6 |
## CAD (KiCad official)
- Symbol: `LM3409QHVMY`
- Footprint: `Package_SO:MSOP-10-1EP_3x3mm_P0.5mm_EP1.68x1.88mm`
- 3D model: HVSSOP-10-EP-0.5mm (KiCad packages3D, STEP)
- 3D model files: `lm3409qhvmy-etched.step` / `lm3409qhvmy-etched.glb` carry the MPN laser-etched on the die in a toggleable `Adom.LaserEtch` group (Fusion-ready); `lm3409qhvmy.step` / `lm3409qhvmy.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/lit/ds/symlink/lm3409.pdf) (47 pp, sha256 `7745578a43302ee7`, retrieved 2026-11-05, 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/lm3409qhvmy-datasheet.pdf)