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MPQ4420GJ-AEC1-Z
Public Made by Adomby adom
Monolithic Power Systems DC-DC Converters, TSOT-23-8. 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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Contents
README
markdownMPQ4420GJ-AEC1-Z
Monolithic Power Systems · DC-DC Converters · TSOT-23-8
MPQ4420GJ-AEC1-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 | PG | output | Power Good open-drain output that goes high when the output voltage exceeds 90% of the nominal voltage. |
| 2 | IN | power_in | Supply voltage input operating from 4V to 30V, requiring input capacitor C1 for decoupling and a wide PCB trace. |
| 3 | SW | power_out | Switch output node, to be connected using a wide PCB trace. |
| 4 | GND | power_in | System ground and reference ground of the regulated output voltage, connected with copper traces and vias with careful PCB layout. |
| 5 | BST | passive | Bootstrap pin requiring a capacitor between SW and BST to form the floating high-side driver supply, with a 20Ω resistor in series with the capacitor strongly recommended to reduce SW spike voltage. |
| 6 | EN/SYNC | input | Enable input (high enables the device) that also accepts an external clock of 200kHz to 2.2MHz to set the switching frequency. |
| 7 | VCC | power_out | Bias supply (internal regulator output) to be decoupled with a 0.1μF to 0.22μF capacitor not exceeding 0.22μF. |
| 8 | FB | input | Feedback input connected to the tap of an external resistor divider from the output to GND to set the output voltage, with frequency fold-back when FB is below 660mV. |
Key specifications
| Parameter | Value |
|---|---|
| Manufacturer | Monolithic Power Systems |
| Package | TSOT-23-8 |
| Category | Power Management |
| Pins | 8 |
Electrical characteristics
Limits as printed in the datasheet (page.json metadata.characteristics carries them as data).
| Parameter | Symbol | Min | Typ | Max | Unit | Conditions | Page |
|---|---|---|---|---|---|---|---|
| Supply Current (Quiescent) | IQ | 0.5 | 0.7 | mA | VEN = 2V, VFB = 1V | 4 | |
| Supply Current (Shutdown) | ISHDN | 8 | μA | VEN = 0V | 4 | ||
| HS Switch-ON Resistance | RON_HS | 90 | 155 | mΩ | VBST-SW=5V | 4 | |
| LS Switch-ON Resistance | RON_LS | 55 | 105 | mΩ | VCC =5V | 4 | |
| Switch Leakage | ILKG_SW | 1 | μA | VEN = 0V, VSW =12V | 4 | ||
| Current Limit | ILIMIT | 3 | 4.2 | 5.5 | A | Under 40% Duty Cycle | 4 |
| Oscillator Frequency | fSW | 320 | 410 | 500 | kHz | VFB=750mV | 4 |
| Fold-Back Frequency | fFB | 70 | 100 | 130 | kHz | VFB<400mV | 4 |
| Maximum Duty Cycle | DMAX | 92 | 95 | % | VFB=750mV, 410kHz | 4 | |
| Sync Frequency Range | fSYNC | 0.2 | 2.4 | MHz | 4 | ||
| Feedback Voltage | VFB | 780 | 792 | 804 | mV | TJ=25°C | 4 |
| Feedback Voltage | VFB | 776 | 808 | mV | 4 | ||
| Feedback Current | IFB | 10 | 100 | nA | VFB=820mV | 4 | |
| EN Rising Threshold | VEN_RISING | 1.15 | 1.4 | 1.65 | V | 4 | |
| EN Falling Threshold | VEN_FALLING | 1.05 | 1.25 | 1.45 | V | 4 | |
| EN Input Current | IEN | 4 | 6 | μA | VEN=2V | 4 | |
| EN Input Current | IEN | 0 | 0.2 | μA | VEN=0 | 4 | |
| VIN Under-Voltage Lockout Threshold-Rising | INUVRISING | 3.3 | 3.5 | 3.7 | V | 4 | |
| VIN Under-Voltage Lockout Threshold-Falling | INUVFALLING | 3.1 | 3.3 | 3.5 | V | 4 | |
| VCC Regulator | VCC | 4.6 | 4.9 | 5.2 | V | ICC=0mA | 4 |
| VCC Load Regulation | 1.5 | 4 | % | ICC=5mA | 4 | ||
| Soft-Start Period | tSS | 0.55 | 1.45 | 2.45 | ms | VOUT from 10% to 90% | 4 |
| Thermal Shutdown | 150 | 170 | °C | Derived from bench characterization. Not tested in production | 4 | ||
| PG Rising Threshold | PGVth_RISING | 86.5 | 90 | 93.5 | % | as percentage of VFB | 4 |
| PG Falling Threshold | PGVth_FALLING | 80.5 | 84 | 87.5 | % | as percentage of VFB | 4 |
| PG Rising Delay | PGTd_RISING | 40 | 90 | 160 | μs | 5 | |
| PG Falling Delay | PGTd_FALLING | 30 | 55 | 95 | μs | 5 | |
| PG Sink Current Capability | VPG | 0.1 | 0.3 | V | Sink 4mA | 5 | |
| PG Leakage Current | ILKG_PG | 10 | 100 | nA | 5 | ||
| Minimum ON Time | tON_MIN | 70 | ns | Derived from bench characterization. Not tested in production | 4 | ||
| EN Threshold Hysteresis | VEN_HYS | 150 | mV | 4 | |||
| VIN Under-Voltage Lockout Threshold-Hysteresis | INUVHYS | 200 | mV | 4 | |||
| Thermal Hysteresis | 30 | °C | Derived from bench characterization. Not tested in production | 4 | |||
| PG Threshold Hysteresis | PGVth_HYS | 6 | % | as percentage of VFB | 5 | ||
| Input Voltage | VIN | -0.3 | 40 | V | 3 | ||
| Switch Voltage | VSW | -0.3 | 41 | V | 3 | ||
| All Other Pins | -0.3 | 6 | V | 3 | |||
| Continuous Power Dissipation | 1.25 | W | TA = +25°C, TSOT23-8 | 3 | |||
| Junction Temperature | TJ | 150 | °C | 3 | |||
| Storage Temperature | -65 | 150 | °C | 3 | |||
| Continuous Supply Voltage | VIN | 4 | 30 | V | 3 | ||
| Output Voltage | VOUT | 0.8 | V | 0.8V to 0.9xVIN | 3 | ||
| Operating Junction Temperature | TJ | -40 | 150 | °C | 3 | ||
| Thermal Resistance Junction-to-Ambient | θJA | 100 | °C/W | TSOT23-8, JESD51-7 4-layer PCB | 3 | ||
| Thermal Resistance Junction-to-Case | θJC | 55 | °C/W | TSOT23-8, JESD51-7 4-layer PCB | 3 |
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 | 4 GND System Ground. This pin is the reference ground of the regulated output voltage, and PCB layout requires special care. For best results, connect to GND with copper traces and vias. | 6 |
CAD (KiCad official)
- Symbol:
MPQ4420GJ-AEC1-Z - Footprint:
Package_TO_SOT_SMD:TSOT-23-8 - 3D model: TSOT-23-8 (KiCad packages3D, STEP)
- 3D model files:
mpq4420gj-aec1-z-etched.step/mpq4420gj-aec1-z-etched.glbcarry the MPN laser-etched on the die in a toggleableAdom.LaserEtchgroup (Fusion-ready);mpq4420gj-aec1-z.step/mpq4420gj-aec1-z.glbare the bare package body.
Provenance
Data extracted from the manufacturer datasheet, not a distributor listing:
- Datasheet: Monolithic Power Systems datasheet (20 pp, sha256
364317dbc2502319, retrieved 2026-10-27, tier: lcsc) - Extractor: parts-factory
2.0.0/extract_pins 0.3, primaryclaude-sonnet-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).