component
MP2359DJ-LF-Z
Public Made by Adomby adom
Monolithic Power Systems Global Sourcing Parts, TSOT-23-6. 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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MP2359DJ-LF-Z
Monolithic Power Systems · Global Sourcing Parts · TSOT-23-6
MP2359DJ-LF-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 | passive | Bootstrap pin: a capacitor connected between SW and BST forms a floating supply that drives the power switch gate above the supply voltage. |
| 2 | GND | power_in | Ground and voltage reference for the regulated output; it should be routed outside the D1-to-C1 ground path so switching current spikes do not couple noise into the part. |
| 3 | FB | input | Feedback input from the external resistor divider that sets VOUT (0.81V reference); the frequency foldback comparator lowers the oscillator frequency when FB is below 250mV. |
| 4 | EN | input | On/off control input that must be pulled above 1.2V to turn the device on, and a 100kΩ resistor to VIN gives automatic enable; maximum input current into EN is 300μA. |
| 5 | IN | power_in | Unregulated supply input operating from +4.5V to +24V, requiring input capacitor C1 to prevent large voltage spikes. |
| 6 | SW | output | Switch output connecting the internal power MOSFET to the inductor and external Schottky rectifier. |
Key specifications
| Parameter | Value |
|---|---|
| Manufacturer | Monolithic Power Systems |
| Package | TSOT-23-6 |
| Category | Global Sourcing Parts |
| 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 | 0.79 | 0.81 | 0.83 | V | 4.5V ≤ VIN ≤ 24V | 3 |
| Oscillator Frequency | fSW | 1.2 | 1.4 | 1.7 | MHz | VFB = 0.6V | 3 |
| Under Voltage Lockout Threshold Rising | 2.5 | 2.8 | 3.1 | V | 3 | ||
| Supply Current (Shutdown) | IS | 0.1 | 1 | μA | VEN = 0V | 3 | |
| Supply Current (Quiescent) | IQ | 0.8 | 1 | mA | VEN = 2V, VFB = 1V | 3 | |
| Feedback Current | IFB | 0.1 | μA | VFB = 0.8V | 3 | ||
| Switch-On Resistance | RDS(ON) | 0.35 | Ω | 3 | |||
| Switch Leakage | 10 | μA | VEN = 0V, VSW = 0V | 3 | |||
| Current Limit | 1.8 | A | 3 | ||||
| Fold-back Frequency | 460 | kHz | VFB = 0V | 3 | |||
| Maximum Duty Cycle | 87 | % | VFB = 0.6V | 3 | |||
| Minimum On-Time | tON | 100 | ns | 3 | |||
| Under Voltage Lockout Threshold Hysteresis | 150 | mV | 3 | ||||
| EN Input Low Voltage | 0.4 | V | 3 | ||||
| EN Input High Voltage | 1.2 | V | 3 | ||||
| EN Input Current | 0.1 | μA | VEN = 0V | 3 | |||
| EN Input Current | 2.1 | VEN = 2V | 3 | ||||
| Thermal Shutdown | 150 | °C | 3 | ||||
| Supply Voltage VIN | VIN | 26 | V | 2 | |||
| Supply Voltage VSW | VSW | 27 | V | 2 | |||
| All Other Pins | -0.3 | 6 | V | 2 | |||
| Continuous Power Dissipation | PD | 0.568 | W | TA = +25°C, TSOT23-6 | 2 | ||
| Junction Temperature | TJ | 150 | °C | 2 | |||
| Storage Temperature | TSTG | -65 | 150 | °C | 2 | ||
| Supply Voltage VIN | VIN | 4.5 | 24 | V | 2 | ||
| Output Voltage VOUT | VOUT | 0.81 | 15 | V | 2 | ||
| Ambient Temperature | TA | -40 | 85 | °C | 2 | ||
| Max input current into the EN pin | 300 | μA | 2 | ||||
| Thermal Resistance junction-to-ambient TSOT23-6 | θJA | 220 | °C/W | Measured on JESD51-7, 4-layer PCB | 2 | ||
| Thermal Resistance junction-to-case TSOT23-6 | θJC | 110 | °C/W | Measured on JESD51-7, 4-layer PCB | 2 |
CAD (KiCad official)
- Symbol:
MP2359DJ-LF-Z - Footprint:
Package_TO_SOT_SMD:TSOT-23-6 - 3D model: TSOT-23-6 (KiCad packages3D, STEP)
- 3D model files:
mp2359dj-lf-z-etched.step/mp2359dj-lf-z-etched.glbcarry the MPN laser-etched on the die in a toggleableAdom.LaserEtchgroup (Fusion-ready);mp2359dj-lf-z.step/mp2359dj-lf-z.glbare the bare package body.
Provenance
Data extracted from the manufacturer datasheet, not a distributor listing:
- Datasheet: Monolithic Power Systems datasheet (11 pp, sha256
faf7e8160f22b7be, retrieved 2026-10-17, 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).