component
L6986HTR
Public Made by Adomby adom
STMicroelectronics DC-DC Converters, HTSSOP-16-EP. 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
markdownL6986HTR
STMicroelectronics · DC-DC Converters · HTSSOP-16-EP
L6986HTR from STMicroelectronics, in a HTSSOP-16-EP. 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 | RST | output | The RST open-collector output is driven low when the output voltage is out of regulation and is released after the adjustable DELAY time once the output is over the active delay threshold. |
| 2 | VCC | power_out | Connect a ceramic capacitor (≥ 470 nF) to filter the internal voltage reference; this pin supplies the embedded analog circuitry, with absolute maximum VCC of -0.3 V to (VIN + 0.3 V) or 4 V max. |
| 3 | SS/INH | bidirectional | An open-collector stage can disable the device by clamping this pin to GND (INH mode), and an internal 4 µA typ. current generator charges the external capacitor to set the soft-start; absolute maximum is -0.3 V to VIN + 0.3 V. |
| 4 | SYNCH/ISKIP | input | In LNM this pin provides master/slave synchronization, and in LCM it selects the skip current level; leave it floating when not used in LNM. |
| 5 | FSW | input | A pull-up resistor (E24 series) to VCC or pull-down to GND selects the switching frequency, with the strapping active only before the soft-start phase. |
| 6 | MLF | input | A pull-up resistor (E24 series) to VCC or pull-down to GND selects low consumption mode or low noise mode and the active RST threshold, with the strapping active only before the soft-start phase. |
| 7 | COMP | passive | Output of the error amplifier, to which the designed compensation network is connected. |
| 8 | DELAY | passive | An external capacitor on this pin sets the delay before RST is released after the output passes the reset threshold; if left floating, RST behaves like a Power Good signal. |
| 9 | VOUT | input | Output voltage sensing input; absolute maximum rating is -0.3 V to 10 V. |
| 10 | SGND | power_in | Signal ground; must be connected to the exposed pad together with PGND. |
| 11 | PGND | power_in | Power ground; must be connected to SGND and the exposed pad. |
| 12 | PGND | power_in | Power ground; must be connected to SGND and the exposed pad. |
| 13 | LX | output | Switching node; absolute maximum rating is -0.3 V to VIN + 0.3 V, and the high-side and low-side switch current is limited to 2 A. |
| 14 | LX | output | Switching node; absolute maximum rating is -0.3 V to VIN + 0.3 V, and the high-side and low-side switch current is limited to 2 A. |
| 15 | VIN | power_in | DC input voltage; operating range is 4 V to 38 V with an absolute maximum of 40 V. |
| 16 | VBIAS | power_in | Typically connected to the regulated output voltage; an external voltage reference can supply part of the analog circuitry to improve light-load efficiency, and it should be connected to GND if not used (absolute maximum -0.3 V to (VIN + 0.3 V) or 6 V max). |
| 17 | EP | passive | Exposed pad (from the footprint; not named in the datasheet pin table). |
Key specifications
| Parameter | Value |
|---|---|
| Manufacturer | STMicroelectronics |
| Package | HTSSOP-16-EP |
| Category | Power Supply Chip |
| Pins | 17 |
CAD (KiCad official)
- Symbol:
L6986HTR - Footprint:
Package_SO:TSSOP-16-1EP_4.4x5mm_P0.65mm - 3D model: HTSSOP-16-EP (KiCad packages3D, STEP)
- 3D model files:
l6986htr-etched.step/l6986htr-etched.glbcarry the MPN laser-etched on the die in a toggleableAdom.LaserEtchgroup (Fusion-ready);l6986htr.step/l6986htr.glbare the bare package body.
Provenance
Data extracted from the manufacturer datasheet, not a distributor listing:
- Datasheet: STMicroelectronics datasheet (68 pp, sha256
b526b22bab1d8834, retrieved 2026-10-08, tier: lcsc) - 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).