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MPQ2315GJ-Z

Monolithic Power Systems · DC-DC Converters · TSOT-23-8

MPQ2315GJ-Z from Monolithic Power Systems, in a TSOT-23-8. 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 AAM input A resistor from the AAM pin to ground sets the AAM voltage that forces non-synchronous mode at small load, and driving AAM high (=VCC) forces CCM.
2 IN power_in Supply voltage input; the MPQ2315 operates from a +4.5V to +24V input rail and requires C1 decoupling with a wide PCB trace.
3 SW power_out Switch output node that must be connected with a wide PCB trace.
4 GND power_in System ground and reference for the regulated output voltage, to be connected to GND with copper and vias per the layout care stated.
5 BST passive Bootstrap pin; a capacitor and a 20Ω resistor connected between SW and BST are required to form a floating supply for the high-side switch driver.
6 EN/SYNC input Enable input where EN=1 enables the MPQ2315, and an external clock applied here changes switching frequency over 200kHz to 2MHz with logic high above 2V.
7 VCC power_out Internal 5V bias supply; decouple with 0.1μF to 0.22μF, with capacitance no more than 0.22μF.
8 FB input Feedback input where the external resistor divider from the output taps in; the frequency fold-back comparator lowers the oscillator frequency when FB is below 400mV.

Key specifications

Parameter Value
Manufacturer Monolithic Power Systems
Package TSOT-23-8
Category Power Management (PMIC)
Pins 8

CAD (KiCad official)

  • Symbol: MPQ2315GJ-Z
  • Footprint: Package_TO_SOT_SMD:TSOT-23-8
  • 3D model: TSOT-23-8 (KiCad packages3D, STEP)
  • 3D model files: mpq2315gj-z-etched.step / mpq2315gj-z-etched.glb carry the MPN laser-etched on the die in a toggleable Adom.LaserEtch group (Fusion-ready); mpq2315gj-z.step / mpq2315gj-z.glb are the bare package body.

Provenance

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

  • Datasheet: Monolithic Power Systems datasheet (21 pp, sha256 a99429993ba6cf76, retrieved 2026-10-28, tier: lcsc)
  • 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