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MP8859GQ-0000-Z

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MPS Others, QFN-16(3x3). Pinout cross-checked by two models against the datasheet, KiCad symbol/footprint/3D.

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Generated by kicad-footprint-generator · KiCad file format 20260206
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docs Publish 0.1.0 · Ray 10h ago
viewers mp8859gq-0000-z: viewers · Ray 10h ago
mp8859gq-0000-z-etched.glb Publish 0.1.0 · Ray 10h ago
mp8859gq-0000-z-etched.step mp8859gq-0000-z: factory component page (tier=lcsc) · Ray 10h ago
mp8859gq-0000-z-hero.glb mp8859gq-0000-z: hero GLB from the etched model (keeps the MPN mark) · Ray 10h ago
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mp8859gq-0000-z.glb Publish 0.1.0 · Ray 10h ago
mp8859gq-0000-z.kicad_mod Publish 0.1.0 · Ray 10h ago
mp8859gq-0000-z.kicad_sym Publish 0.1.0 · Ray 10h ago
mp8859gq-0000-z.lbr Publish 0.1.0 · Ray 10h ago
mp8859gq-0000-z.step Publish 0.1.0 · Ray 10h ago
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README.md Publish 0.1.0 · Ray 10h ago

MP8859GQ-0000-Z

MPS · Others · QFN-16(3x3)

MP8859GQ-0000-Z from MPS, in a QFN-16(3x3). 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 IN power_in IN is the supply input for the chip and operates from 2.8V to 22V, with a capacitor CIN placed as close to the IC as possible to limit voltage spikes.
2 GND power_in GND is the power ground and reference for the regulated output voltage, and requires copper traces and vias with extra care in PCB layout.
3 EN input EN is the on/off control for the entire chip, driven high to turn the chip on and low or floating to turn it off, with an internal 2MΩ pull-down to ground.
4 ADD input ADD is the I2C slave address programming pin, set by a resistor divider from VCC to select one of four I2C slave addresses.
5 SCL input SCL is the I2C clock pin and supports an I2C clock up to 3.4MHz.
6 SDA bidirectional SDA is the data pin of the I2C interface.
7 OC passive OC is the output constant-current limit set pin, configured by an external resistor.
8 ALT output ALT is the alert output that is pulled to logic low to indicate a fault or warning has occurred.
9 VCC power_out VCC is the internal 3.6V LDO regulator output and must be decoupled with a 1µF capacitor.
10 AGND power_in AGND is the analog ground and must be connected to GND.
11 GND power_in GND is the power ground and reference for the regulated output voltage, and requires copper traces and vias with extra care in PCB layout.
12 OUT power_out OUT is the output power pin, with the output capacitor placed close to OUT and GND.
13 BST2 passive BST2 is the bootstrap pin, connected through a 0.1µF capacitor to SW2 to form a floating supply for the high-side switch driver.
14 SW2 passive SW2 is the switching node of the second half bridge, with one end of the inductor connected to SW2.
15 SW1 passive SW1 is the switching node of the first half bridge, with one end of the inductor connected to SW1.
16 BST1 passive BST1 is the bootstrap pin, connected through a 0.1µF capacitor to SW1 to form a floating supply for the high-side switch driver.
17 EP passive Exposed pad (from the footprint; not named in the datasheet pin table).

Key specifications

Parameter Value
Manufacturer MPS
Package QFN-16(3x3)
Category Others
Pins 17

Materials and finish

As the datasheet states them (page.json metadata.appearance; the 3D model's colours follow it).

Part Material Colour / plating Datasheet says Page
contacts copper close to the IC's VIN-to-GND and OUT-to￾GND pins, respectively. 2. Use a large copper plane for PGND. 30

CAD (KiCad official)

  • Symbol: MP8859GQ-0000-Z
  • Footprint: Package_DFN_QFN:QFN-16-1EP_3x3mm_P0.5mm_EP1.7x1.7mm
  • 3D model: QFN-16(3x3) (KiCad packages3D, STEP)
  • 3D model files: mp8859gq-0000-z-etched.step / mp8859gq-0000-z-etched.glb carry the MPN laser-etched on the die in a toggleable Adom.LaserEtch group (Fusion-ready); mp8859gq-0000-z.step / mp8859gq-0000-z.glb are the bare package body.

Provenance

Data extracted from the manufacturer datasheet, not a distributor listing:

  • Datasheet: MPS datasheet (32 pp, sha256 a88e314c593a29c2, retrieved 2026-10-27, tier: lcsc)
  • Extractor: parts-factory 2.0.0 / extract_pins 0.3, primary claude-haiku-5-5 (text), consensus off (skipped (clean text read)), 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