component
MPQ4420AGJ-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.
Generated by kicad-footprint-generator · KiCad file format 20260206
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MPQ4420AGJ-AEC1-Z
Monolithic Power Systems · DC-DC Converters · TSOT-23-8
MPQ4420AGJ-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 nominal and needs an external pull-up (e.g., 100kΩ) to VCC or another voltage source; it can sink 0.3V max at 4mA. |
| 2 | IN | power_in | Supply voltage input operating from a 4V to 36V input rail, which must be decoupled by C1 and connected with a wide PCB trace. |
| 3 | SW | output | 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, which requires copper traces and vias for best results. |
| 5 | BST | passive | Bootstrap pin that requires a capacitor between SW and BST to form the high-side driver supply, with a 20Ω resistor between SW and BST strongly recommended to reduce SW voltage spikes. |
| 6 | EN/SYNC | input | Enable input that turns the regulator on when driven high and accepts an external 200kHz to 2.2MHz clock for synchronization; the input current must be limited below 150µA via a pull-up resistor, and direct connection requires limiting the voltage to 6V or less. |
| 7 | VCC | power_out | Internal 5V bias regulator output that must be decoupled with a 0.1µF to 0.22µF capacitor, not exceeding 0.22µF. |
| 8 | FB | input | Feedback input connected to the resistor-divider tap to set the output voltage against the 0.8V reference, with frequency foldback active when FB is below 660mV. |
Key specifications
| Parameter | Value |
|---|---|
| Manufacturer | Monolithic Power Systems |
| Package | TSOT-23-8 |
| Category | Power Management (PMIC) |
| 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 |
|---|---|---|---|---|---|---|---|
| VIN input voltage absolute maximum | VIN | -0.3 | 40 | V | 3 | ||
| VSW switch voltage absolute maximum | VSW | -0.3 | 41 | V | 3 | ||
| All other pins absolute maximum | -0.3 | 6 | V | All other pins | 3 | ||
| Continuous power dissipation | 1.25 | W | TA = +25°C, TSOT23-8 | 3 | |||
| Junction temperature absolute maximum | 150 | °C | 3 | ||||
| Storage temperature | -65 | 150 | °C | 3 | |||
| Continuous supply voltage (VIN) | VIN | 4 | 36 | V | 3 | ||
| Output voltage (VOUT) | VOUT | 0.8 | V | Printed as 0.8V to 0.9 x VIN | 3 | ||
| Operating junction temperature (TJ) | TJ | -40 | 125 | °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 | 3 | ||
| 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 | |
| Current limit | ILIMIT | 3.4 | 5.6 | 7.8 | A | Under 40% duty cycle | 4 |
| Oscillator frequency | fSW | 320 | 410 | 500 | kHz | VFB = 750mV | 4 |
| Foldback 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 (full temperature range) | 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 (low) | 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 | 4 | |||
| PG rising threshold | PGVth_RISING | 86 | 90 | 94 | % | as a percentage of VFB | 4 |
| PG falling threshold | PGVth_FALLING | 80 | 84 | 88 | % | as a 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 |
CAD (KiCad official)
- Symbol:
MPQ4420AGJ-AEC1-Z - Footprint:
Package_TO_SOT_SMD:TSOT-23-8 - 3D model: TSOT-23-8 (KiCad packages3D, STEP)
- 3D model files:
mpq4420agj-aec1-z-etched.step/mpq4420agj-aec1-z-etched.glbcarry the MPN laser-etched on the die in a toggleableAdom.LaserEtchgroup (Fusion-ready);mpq4420agj-aec1-z.step/mpq4420agj-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
0f6fe8d1f2a8b86f, retrieved 2026-10-21, 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).