component
MPQ2459GJ-AEC1-Z
Public Made by Adomby adom
Monolithic Power Systems DC-DC Converters, TSOT-23-6. 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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README
markdownMPQ2459GJ-AEC1-Z
Monolithic Power Systems · DC-DC Converters · TSOT-23-6
MPQ2459GJ-AEC1-Z from Monolithic Power Systems, in a TSOT-23-6. 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 | BST | power_out | Bootstrap pin: connect a capacitor between SW and BST to form a floating supply for the power-switch driver, with VBS limited to VSW + 6V (absolute maximum); the datasheet recommends a 0.1µF to 1µF BST capacitor. |
| 2 | GND | power_in | Ground and voltage reference for the regulated output; requires special layout, placed outside the D1-to-C1 ground path to keep switching spikes from introducing voltage noise. |
| 3 | FB | input | Feedback input that sets the output voltage through an external resistor divider from the output to GND; the frequency foldback comparator lowers the oscillator frequency when VFB is below 250mV to prevent current-limit runaway during a short circuit. |
| 4 | EN | input | ON/OFF control: pull EN above 1.2V to turn the device on, and connect a 100kΩ resistor from EN to IN for automatic enable; all other pins are rated -0.3V to +6V absolute maximum. |
| 5 | IN | power_in | Supply input for the 4.5V to 55V unregulated input range; requires C1 to prevent large voltage spikes at the input, with VIN absolute maximum of 60V. |
| 6 | SW | output | Switch output connecting the internal power MOSFET to the inductor and external Schottky diode, with VSW rated from -0.3V to VIN + 0.3V (absolute maximum). |
Key specifications
| Parameter | Value |
|---|---|
| Manufacturer | Monolithic Power Systems |
| Package | TSOT-23-6 |
| Category | Power Management (PMIC) |
| Pins | 6 |
Electrical characteristics
Limits as printed in the datasheet (page.json metadata.characteristics carries them as data).
| Parameter | Symbol | Min | Typ | Max | Unit | Conditions | Page |
|---|---|---|---|---|---|---|---|
| Feedback Voltage | VFB | 0.796 | 0.812 | 0.828 | V | VIN = 12V, TJ = −40°C to +125°C | 3 |
| Feedback Voltage (TJ=25°C) | VFB | 0.8 | 0.812 | 0.824 | V | TJ=25°C | 3 |
| Switch-ON Resistance | RDS(ON) | 1 | 2 | Ω | 3 | ||
| Current Limit (TJ=25°C) | ILIM | 1 | 1.25 | 1.5 | A | TJ=25°C | 3 |
| Current Limit | ILIM | 0.9 | 1.25 | 1.6 | A | 3 | |
| Oscillator Frequency | fSW | 360 | 480 | 600 | kHz | VFB = 0.6V | 3 |
| Maximum Duty Cycle | DMAX | 90 | 93.5 | % | VFB = 0.6V | 3 | |
| Under-Voltage-Lockout Threshold, Rising | VUVLO R | 2.9 | 3.3 | 3.7 | V | 3 | |
| Under-Voltage-Lockout Threshold, Falling | VUVLO F | 2.65 | 3.05 | 3.45 | V | 3 | |
| EN Threshold Rising | VEN R | 1.1 | 1.35 | 1.6 | V | 3 | |
| EN Threshold Falling | VEN F | 0.9 | 1.17 | 1.3 | V | 3 | |
| EN Input Current | IEN | 3.1 | 5 | μA | VEN = 2V | 3 | |
| EN Input Current | IEN | 0.1 | 1 | μA | VEN = 0V | 3 | |
| Supply Current, Shutdown | IS | 0.1 | 1 | μA | VEN = 0V | 3 | |
| Supply Current, Quiescent | IQ | 0.73 | 0.92 | mA | VEN = 2V, VFB = 1V | 3 | |
| Supply Voltage | VIN | -0.3 | 60 | V | 2 | ||
| Switch Output Voltage | VSW | -0.3 | V | Maximum printed as VIN+0.3V | 2 | ||
| All Other Pins | -0.3 | 6 | V | 2 | |||
| Continuous Power Dissipation | 0.568 | W | TA = +25°C, TSOT23-6 | 2 | |||
| Junction Temperature | 150 | °C | 2 | ||||
| Lead Temperature | 260 | °C | 2 | ||||
| Storage Temperature | -65 | 150 | °C | 2 | |||
| Supply Voltage | VIN | 4.5 | 55 | V | 2 | ||
| Output Voltage | VOUT | 0.81 | V | Maximum printed as 0.95×VIN | 2 | ||
| Operating Junction Temp. | TJ | -40 | 125 | °C | 2 | ||
| Thermal Resistance, Junction-to-Ambient | θJA | 220 | °C/W | Measured on JESD51-7, 4-layer PCB | 2 | ||
| Thermal Resistance, Junction-to-Case | θJC | 110 | °C/W | Measured on JESD51-7, 4-layer PCB | 2 | ||
| Feedback Current | IFB | 0.1 | μA | VFB = 0.85V | 3 | ||
| Switch Leakage Current | ISW LKG | 1 | μA | VEN = 0V, VSW = 0V | 3 | ||
| Foldback Frequency | fSW F | 150 | kHz | VFB = 0V | 3 | ||
| Minimum ON Time | τON | 100 | ns | 3 | |||
| Under-Voltage-Lockout Threshold, Hysteresis | VUVLO_HYS | 250 | mV | 3 | |||
| EN Input Hysteresis | VEN HYS | 180 | mV | 3 | |||
| Thermal Shutdown | TSD | 165 | °C | 3 | |||
| Thermal Shutdown Hysteresis | TSD HYS | 20 | °C | 3 |
CAD (KiCad official)
- Symbol:
MPQ2459GJ-AEC1-Z - Footprint:
Package_TO_SOT_SMD:TSOT-23-6 - 3D model: TSOT-23-6 (KiCad packages3D, STEP)
- 3D model files:
mpq2459gj-aec1-z-etched.step/mpq2459gj-aec1-z-etched.glbcarry the MPN laser-etched on the die in a toggleableAdom.LaserEtchgroup (Fusion-ready);mpq2459gj-aec1-z.step/mpq2459gj-aec1-z.glbare the bare package body.
Provenance
Data extracted from the manufacturer datasheet, not a distributor listing:
- Datasheet: Monolithic Power Systems datasheet (13 pp, sha256
b58e72067d61118a, retrieved 2026-10-18, 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).