component
TPS65279RHHR
Public Made by Adomby adom
Texas Instruments DC-DC Converters, VQFN-36-EP(6x6). Pinout cross-checked by two models against the datasheet, KiCad symbol/footprint/3D.
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README.mdadded+74@@ -0,0 +1,74 @@+# TPS65279RHHR++**Texas Instruments** · DC-DC Converters · VQFN-36-EP(6x6)++TPS65279RHHR from Texas Instruments, in a VQFN-36-EP(6x6). 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 | PVIN2 | power_in | Power input supplying the power switches of converter 2 (buck2). |+| 2 | PVIN2 | power_in | Power input supplying the power switches of converter 2 (buck2). |+| 3 | ISHARE | input | Logic pin selecting current-sharing mode: tie high to parallel the two buck converters (buck1 is used), tie low for separate operation. |+| 4 | MODE | input | Ground connection forces continuous conduction mode (CCM); connection to V7V enables pulse-skipping mode (PSM) at light load. |+| 5 | V7V | power_out | Internal LDO output regulating to a typical 6.3 V for driver and control circuits; decouple to power ground with a minimum 1 µF ceramic capacitor, and V7V is slightly below VIN if VIN is lower than 6.3 V. |+| 6 | VIN | power_in | Supply input for the internal LDO and controllers, specified at 4.5 V to 18 V. |+| 7 | PVIN1 | power_in | Power input supplying the power switches of converter 1 (buck1). |+| 8 | PVIN1 | power_in | Power input supplying the power switches of converter 1 (buck1). |+| 9 | PGND1 | power_in | Power ground of buck1; place the input capacitor ground as close as possible to this pin. |+| 10 | PGND1 | power_in | Power ground of buck1; place the input capacitor ground as close as possible to this pin. |+| 11 | PGND1 | power_in | Power ground of buck1; place the input capacitor ground as close as possible to this pin. |+| 12 | PGOOD1 | output | Open-drain power-good output for buck1 that goes high impedance when output is in range; a 100 kΩ pull-up resistor is recommended. |+| 13 | PGOOD2 | output | Open-drain power-good output for buck2 that goes high impedance when output is in range; a 100 kΩ pull-up resistor is recommended. |+| 14 | FB1 | input | Feedback sense input for buck1 output via resistor divider, with a 0.6 V ±1% reference; absolute maximum 3.6 V. |+| 15 | RLIM1 | input | Current-limit threshold set pin for buck1; a resistor to GND sets the overcurrent protection level. |+| 16 | BST1 | power_out | Bootstrap capacitor pin between BST1 and LX1 that supplies the high-side MOSFET gate drive; absolute maximum 7 V referenced to LX1. |+| 17 | LX1 | output | Switching node of buck1; absolute maximum −4.5 V to 23 V (transient below 20 ns). |+| 18 | LX1 | output | Switching node of buck1; absolute maximum −4.5 V to 23 V (transient below 20 ns). |+| 19 | LX1 | output | Switching node of buck1; absolute maximum −4.5 V to 23 V (transient below 20 ns). |+| 20 | SS1 | passive | Soft-start and tracking pin for buck1 whose external capacitor sets the reference rise time; voltage here overrides the internal reference, and in current-sharing use it serves as soft-start; absolute maximum 3.6 V. |+| 21 | COMP1 | passive | Error amplifier output and loop compensation pin for buck1; in current-sharing use it serves as the compensation pin; absolute maximum 3.6 V. |+| 22 | ROSC | input | Oscillator frequency programming pin set by an external resistor (200 kHz to 1.6 MHz); it synchronizes to an external clock when one is applied. |+| 23 | AGND | power_in | Analog ground of the controllers; must be tied to power ground at a single point at the V7V capacitor return per the layout guidance. |+| 24 | COMP2 | passive | Error amplifier output and loop compensation pin for buck2; float this pin in current-sharing mode; absolute maximum 3.6 V. |+| 25 | SS2 | passive | Soft-start and tracking pin for buck2 whose external capacitor sets the reference rise time; float this pin in current-sharing mode; absolute maximum 3.6 V. |+| 26 | LX2 | output | Switching node of buck2; absolute maximum −4.5 V to 23 V (transient below 20 ns). |+| 27 | LX2 | output | Switching node of buck2; absolute maximum −4.5 V to 23 V (transient below 20 ns). |+| 28 | LX2 | output | Switching node of buck2; absolute maximum −4.5 V to 23 V (transient below 20 ns). |+| 29 | BST2 | power_out | Bootstrap capacitor pin between BST2 and LX2 that supplies the high-side MOSFET gate drive; absolute maximum 7 V referenced to LX2. |+| 30 | RLIM2 | input | Current-limit threshold set pin for buck2; a resistor to GND sets the overcurrent protection level. |+| 31 | FB2 | input | Feedback sense input for buck2 output via resistor divider, with a 0.6 V ±1% reference; connect to ground in current-sharing mode; absolute maximum 3.6 V. |+| 32 | EN1 | input | Enable pin for buck1 that also sets input undervoltage lockout via two resistors; enable voltage range 0 V to 6 V. |+| 33 | EN2 | input | Enable pin for buck2 that also sets input undervoltage lockout via two resistors; enable voltage range 0 V to 6 V. |+| 34 | PGND2 | power_in | Power ground of buck2; place the input capacitor ground as close as possible to this pin. |+| 35 | PGND2 | power_in | Power ground of buck2; place the input capacitor ground as close as possible to this pin. |+| 36 | PGND2 | power_in | Power ground of buck2; place the input capacitor ground as close as possible to this pin. |+| 37 | Thermal Pad | power_in | Exposed thermal pad connected to power ground that must be soldered to the board with as many vias as possible; no electrical signal is bonded to it inside the package. |++## Key specifications++| Parameter | Value |+|---|---|+| Manufacturer | Texas Instruments |+| Package | VQFN-36-EP(6x6) |+| Category | Power Management (PMIC) |+| Pins | 37 |++## CAD (KiCad official)++- Symbol: `TPS65279RHHR`+- Footprint: `Package_DFN_QFN:QFN-36-1EP_6x6mm_P0.5mm_EP3.7x3.7mm`+- 3D model: VQFN-36-EP(6x6) (KiCad packages3D, STEP)+- 3D model files: `tps65279rhhr-etched.step` / `tps65279rhhr-etched.glb` carry the MPN laser-etched on the die in a toggleable `Adom.LaserEtch` group (Fusion-ready); `tps65279rhhr.step` / `tps65279rhhr.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/cn/lit/gpn/tps65279) (42 pp, sha256 `f4d0f302ae36ca39`, retrieved 2026-10-07, tier: lcsc)+- **Datasheet language:** Chinese. Pin names, descriptions, and specs on this page were extracted and translated to English by ds2sf; the linked PDF is the manufacturer original.+- **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/tps65279rhhr-datasheet.pdf)
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connection to V7V enables pulse-skipping mode (PSM) at light load."+ },+ {+ "number": "5",+ "name": "V7V",+ "type": "power_out",+ "description": "Internal LDO output regulating to a typical 6.3 V for driver and control circuits; decouple to power ground with a minimum 1 µF ceramic capacitor, and V7V is slightly below VIN if VIN is lower than 6.3 V."+ },+ {+ "number": "6",+ "name": "VIN",+ "type": "power_in",+ "description": "Supply input for the internal LDO and controllers, specified at 4.5 V to 18 V."+ },+ {+ "number": "7",+ "name": "PVIN1",+ "type": "power_in",+ "description": "Power input supplying the power switches of converter 1 (buck1)."+ },+ {+ "number": "8",+ "name": "PVIN1",+ "type": "power_in",+ "description": "Power input supplying the power switches of converter 1 (buck1)."+ },+ {+ "number": "9",+ "name": "PGND1",+ "type": "power_in",+ "description": "Power ground of buck1; place the input capacitor ground as close as possible to this pin."+ },+ {+ "number": "10",+ "name": "PGND1",+ "type": "power_in",+ "description": "Power ground of buck1; place the input capacitor ground as close as possible to this pin."+ },+ {+ "number": "11",+ "name": "PGND1",+ "type": "power_in",+ "description": "Power ground of buck1; place the input capacitor ground as close as possible to this pin."+ },+ {+ "number": "12",+ "name": "PGOOD1",+ "type": "output",+ "description": "Open-drain power-good output for buck1 that goes high impedance when output is in range; a 100 kΩ pull-up resistor is recommended."+ },+ {+ "number": "13",+ "name": "PGOOD2",+ "type": "output",+ "description": "Open-drain power-good output for buck2 that goes high impedance when output is in range; a 100 kΩ pull-up resistor is recommended."+ },+ {+ "number": "14",+ "name": "FB1",+ "type": "input",+ "description": "Feedback sense input for buck1 output via resistor divider, with a 0.6 V ±1% reference; absolute maximum 3.6 V."+ },+ {+ "number": "15",+ "name": "RLIM1",+ "type": "input",+ "description": "Current-limit threshold set pin for buck1; a resistor to GND sets the overcurrent protection level."+ },+ {+ "number": "16",+ "name": "BST1",+ "type": "power_out",+ "description": "Bootstrap capacitor pin between BST1 and LX1 that supplies the high-side MOSFET gate drive; absolute maximum 7 V referenced to LX1."+ },+ {+ "number": "17",+ "name": "LX1",+ "type": "output",+ "description": "Switching node of buck1; absolute maximum −4.5 V to 23 V (transient below 20 ns)."+ },+ {+ "number": "18",+ "name": "LX1",+ "type": "output",+ "description": "Switching node of buck1; absolute maximum −4.5 V to 23 V (transient below 20 ns)."+ },+ {+ "number": "19",+ "name": "LX1",+ "type": "output",+ "description": "Switching node of buck1; absolute maximum −4.5 V to 23 V (transient below 20 ns)."+ },+ {+ "number": "20",+ "name": "SS1",+ "type": "passive",+ "description": "Soft-start and tracking pin for buck1 whose external capacitor sets the reference rise time; voltage here overrides the internal reference, and in current-sharing use it serves as soft-start; absolute maximum 3.6 V."+ },+ {+ "number": "21",+ "name": "COMP1",+ "type": "passive",+ "description": "Error amplifier output and loop compensation pin for buck1; in current-sharing use it serves as the compensation pin; absolute maximum 3.6 V."+ },+ {+ "number": "22",+ "name": "ROSC",+ "type": "input",+ "description": "Oscillator frequency programming pin set by an external resistor (200 kHz to 1.6 MHz); it synchronizes to an external clock when one is applied."+ },+ {+ "number": "23",+ "name": "AGND",+ "type": "power_in",+ "description": "Analog ground of the controllers; must be tied to power ground at a single point at the V7V capacitor return per the layout guidance."+ },+ {+ "number": "24",+ "name": "COMP2",+ "type": "passive",+ "description": "Error amplifier output and loop compensation pin for buck2; float this pin in current-sharing mode; absolute maximum 3.6 V."+ },+ {+ "number": "25",+ "name": "SS2",+ "type": "passive",+ "description": "Soft-start and tracking pin for buck2 whose external capacitor sets the reference rise time; float this pin in current-sharing mode; absolute maximum 3.6 V."+ },+ {+ "number": "26",+ "name": "LX2",+ "type": "output",+ "description": "Switching node of buck2; absolute maximum −4.5 V to 23 V (transient below 20 ns)."+ },+ {+ "number": "27",+ "name": "LX2",+ "type": "output",+ "description": "Switching node of buck2; absolute maximum −4.5 V to 23 V (transient below 20 ns)."+ },+ {+ "number": "28",+ "name": "LX2",+ "type": "output",+ "description": "Switching node of buck2; absolute maximum −4.5 V to 23 V (transient below 20 ns)."+ },+ {+ "number": "29",+ "name": "BST2",+ "type": "power_out",+ "description": "Bootstrap capacitor pin between BST2 and LX2 that supplies the high-side MOSFET gate drive; absolute maximum 7 V referenced to LX2."+ },+ {+ "number": "30",+ "name": "RLIM2",+ "type": "input",+ "description": "Current-limit threshold set pin for buck2; a resistor to GND sets the overcurrent protection level."+ },+ {+ "number": "31",+ "name": "FB2",+ "type": "input",+ "description": "Feedback sense input for buck2 output via resistor divider, with a 0.6 V ±1% reference; connect to ground in current-sharing mode; absolute maximum 3.6 V."+ },+ {+ "number": "32",+ "name": "EN1",+ "type": "input",+ "description": "Enable pin for buck1 that also sets input undervoltage lockout via two resistors; enable voltage range 0 V to 6 V."+ },+ {+ "number": "33",+ "name": "EN2",+ "type": "input",+ "description": "Enable pin for buck2 that also sets input undervoltage lockout via two resistors; enable voltage range 0 V to 6 V."+ },+ {+ "number": "34",+ "name": "PGND2",+ "type": "power_in",+ "description": "Power ground of buck2; place the input capacitor ground as close as possible to this pin."+ },+ {+ "number": "35",+ "name": "PGND2",+ "type": "power_in",+ "description": "Power ground of buck2; place the input capacitor ground as close as possible to this pin."+ },+ {+ "number": "36",+ "name": "PGND2",+ "type": "power_in",+ "description": "Power ground of buck2; place the input capacitor ground as close as possible to this pin."+ },+ {+ "number": "37",+ "name": "Thermal Pad",+ "type": "power_in",+ "description": "Exposed thermal pad connected to power ground that must be soldered to the board with as many vias as possible; no electrical signal is bonded to it inside the package."+ }+ ],+ "provenance": {+ "extractor": "extract_pins 0.3",+ "factory_chain": {+ "factory": "2.0.0",+ "extractor": "extract_pins 0.3",+ "primary_model": "claude-haiku-5-5",+ "primary_mode": "text",+ "consensus_model": "claude-sonnet-5-5",+ "consensus": "agreed",+ "guards": "pin_guards 0.1: passed",+ "guard_notes": [+ "extractor flagged: The datasheet pin table merges the SS1 row (HTSSOP 22, 27; VQFN 20, 25). The SS2 row lists VQFN 25, ; The exposed thermal pad is listed as pin 37 in the VQFN column of the pin table, outside the 36 numb; Pin types for BST1/BST2 (power_out), V7V (power_out), and SS/COMP (passive) are inferred from their "+ ],+ "pages_sent": 9,+ "cost_usd": 0.092,+ "at": "2026-10-07T22:23:05"+ },+ "datasheet": {+ "url": "https://www.ti.com/cn/lit/gpn/tps65279",+ "pages": 42,+ "sha256": "f4d0f302ae36ca39",+ "source_tier": "lcsc"+ },+ "cad": "KiCad official (CC-BY-SA 4.0)",+ "pins": {+ "total": 37,+ "described": 37,+ "cites_pages": true,+ "refuses_to_fabricate": true+ }+ },+ "viewers": {+ "symbol": "viewers/symbol.html",+ "footprint": "viewers/footprint.html"+ },+ "models_3d": [+ {+ "file": "tps65279rhhr.step",+ "role": "plain",+ "up": "Z",+ "units": "mm",+ "origin": "footprint origin = pad-pattern centre",+ "seat": "z = 0",+ "extents_mm": [+ 6,+ 6,+ 0.77+ ],+ "zmin_mm": 0,+ "centre_offset_mm": 0,+ "footprint_binding": "identity",+ "sha256": "6212c4fd2463ccb7c6ae2c35f5e24c80884153fcaeaf8e86549c0e49087bc8bb",+ "checked": "2026-10-07",+ "checked_by": "factory/step_pose.py (Z-up, origin, seat, binding)"+ },+ {+ "file": "tps65279rhhr-etched.step",+ "role": "eda",+ "up": "Z",+ "units": "mm",+ "origin": "footprint origin = pad-pattern centre",+ "seat": "z = 0",+ "extents_mm": [+ 6,+ 6,+ 0.77+ ],+ "zmin_mm": 0,+ "centre_offset_mm": 0,+ "footprint_binding": "identity",+ "sha256": "7b30e6e1081dc96328cda5d0c407ce24f7dd552c25db2d717422dc15efa8c965",+ "checked": "2026-10-07",+ "checked_by": "factory/step_pose.py (Z-up, origin, seat, binding)"+ }+ ]+ },+ "visibility": "public",+ "org": "adom",+ "author": {+ "name": "Ray",+ "email": "[email protected]"+ }+}