component
L6599AD
Public Made by Adomby adom
STMicroelectronics AC-DC Controllers And Regulators, SO-16. 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
markdownL6599AD
STMicroelectronics · AC-DC Controllers And Regulators · SO-16
L6599AD from STMicroelectronics, in a SO-16. 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 | Css | input | Soft-start capacitor terminal; external RC network sets maximum frequency and soft-start duration, internally discharged on shutdown or overcurrent. |
| 2 | DELAY | input | Overcurrent delay timing capacitor; charged by 150µA internal generator, IC shuts down at 3.5V and soft-restarts below 0.3V. |
| 3 | CF | output | Oscillator timing capacitor; charged and discharged by internal current generators to set switching frequency. |
| 4 | RFmin | output | Frequency setting reference; provides 2V precision reference for external RC frequency-setting network and optocoupler feedback control. |
| 5 | STBY | input | Burst mode threshold input; IC enters idle state if voltage below 1.24V reference and restarts when voltage exceeds 1.29V threshold. |
| 6 | ISEN | input | Primary current sense input; filtered average current signal compared to 0.8V threshold (50mV hysteresis) for frequency shift and 1.5V for latched shutdown. |
| 7 | LINE | input | Line sensing input for brownout protection; IC shuts down at voltage below 1.24V with 13µA hysteresis and at voltage above 6V internal Zener. |
| 8 | DIS | input | Latched device shutdown input; voltage above 1.85V latches IC off and discharges soft-start, requiring VCC power cycle below UVLO to restart. |
| 9 | PFC_STOP | tri_state | Open-drain PFC controller stop output; pulled low when DIS latches, ISEN latches, LINE exceeds 6V, STBY below 1.24V, or DELAY exceeds 2V. |
| 10 | GND | power_in | Chip ground and current return for both low-side gate driver and IC bias circuits; must be separate from pulsed current returns. |
| 11 | LVG | output | Low-side gate-drive output with 0.3A minimum source and 0.8A minimum sink peak current capability, actively pulled to GND during UVLO. |
| 12 | Vcc | power_in | IC supply voltage for signal circuits and low-side gate driver; 0.1µF bypass capacitor to GND recommended. |
| 13 | N.C. | unconnected | High-voltage spacer pin not internally connected to isolate high-voltage pins and ensure compliance with PCB creepage distance safety requirements. |
| 14 | OUT | power_in | High-side gate-drive floating ground reference; current return for high-side gate driver, layout carefully to minimize voltage spikes. |
| 15 | HVG | output | High-side floating gate-drive output with 0.3A minimum source and 0.8A minimum sink peak current, internally resistively pulled to OUT during UVLO. |
| 16 | VBOOT | power_in | High-side gate-drive floating supply voltage; bootstrap capacitor connection between VBOOT and OUT, fed by internal synchronous bootstrap diode. |
Key specifications
| Parameter | Value |
|---|---|
| Manufacturer | STMicroelectronics |
| Package | SO-16 |
| Category | Power Management (PMIC) |
| Pins | 16 |
CAD (KiCad official)
- Symbol:
L6599AD - Footprint:
Package_SO:SOIC-16_3.9x9.9mm_P1.27mm - 3D model: SO-16 (KiCad packages3D, STEP)
- 3D model files:
l6599ad-etched.step/l6599ad-etched.glbcarry the MPN laser-etched on the die in a toggleableAdom.LaserEtchgroup (Fusion-ready);l6599ad.step/l6599ad.glbare the bare package body.
Provenance
Data extracted from the manufacturer datasheet, not a distributor listing:
- Datasheet: STMicroelectronics datasheet (37 pp, sha256
94697ab5d2699acc, retrieved 2026-10-05, tier: lcsc) - Extractor: parts-factory
2.0.0/extract_pins 0.3, primaryclaude-haiku-4-5-20251001(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).