component
MP1541DJ-LF-Z
Public Made by Adomby adom
Monolithic Power Systems Global Sourcing Parts, TSOT-23-5. Pinout cross-checked by two models against the datasheet, KiCad symbol/footprint/3D.
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MP1541DJ-LF-Z
Monolithic Power Systems · Global Sourcing Parts · TSOT-23-5
MP1541DJ-LF-Z from Monolithic Power Systems, in a TSOT-23-5. 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 | SW | output | Power switch output and drain of the internal MOSFET; connect the power inductor and output rectifier to SW, which can swing between GND and 22V. |
| 2 | GND | power_in | Ground pin; the ground return of the input and output capacitors should be tied close to this pin. |
| 3 | FB | input | Feedback input with a 1.25V feedback voltage; connect a resistor divider to FB. |
| 4 | EN | input | Regulator on/off control input where a high input turns the converter on and a low input turns it off, and EN cannot be left floating. |
| 5 | IN | power_in | Input supply pin that must be locally bypassed. |
Key specifications
| Parameter | Value |
|---|---|
| Manufacturer | Monolithic Power Systems |
| Package | TSOT-23-5 |
| Category | Global Sourcing Parts |
| Pins | 5 |
Electrical characteristics
Limits as printed in the datasheet (page.json metadata.characteristics carries them as data).
| Parameter | Symbol | Min | Typ | Max | Unit | Conditions | Page |
|---|---|---|---|---|---|---|---|
| Operating Input Voltage | VIN | 2.5 | 6 | V | 4 | ||
| Switching Frequency | fSW | 1 | 1.3 | 1.6 | MHz | 4 | |
| EN Threshold | VEN | 1 | 1.3 | 1.6 | V | VEN Rising | 4 |
| FB Voltage | VFB | 1.21 | 1.25 | 1.29 | V | 4 | |
| Undervoltage Lockout | 2.25 | 2.45 | V | 4 | |||
| Supply Current (Shutdown) | 0.1 | 1 | µA | VEN = 0V | 4 | ||
| Supply Current (Quiescent) | 635 | 850 | µA | VFB = 1.3V | 4 | ||
| Maximum Duty Cycle | 80 | 85 | % | VFB = 0V | 4 | ||
| FB Input Bias Current | -100 | -30 | nA | VFB = 1.25V | 4 | ||
| Absolute Maximum SW Pin Voltage | -0.3 | 25 | V | SW Pin | 3 | ||
| Absolute Maximum All Other Pins Voltage | -0.3 | 6.5 | V | All other pins | 3 | ||
| Absolute Maximum Storage Temperature | -65 | 150 | °C | 3 | |||
| Absolute Maximum Junction Temperature | 150 | °C | 3 | ||||
| Absolute Maximum Lead Temperature | 260 | °C | 3 | ||||
| Continuous Power Dissipation | 0.47 | W | TA = +25°C, TSOT23-5 | 3 | |||
| Supply Voltage | VIN | 2.5 | 6 | V | 3 | ||
| Output Voltage | VOUT | 3 | 22 | V | 3 | ||
| Operating Temperature | -40 | 85 | °C | 3 | |||
| Maximum Junction Temperature | TJ | 125 | °C | 3 | |||
| Thermal Resistance Junction-to-Ambient | θJA | 220 | C/W | JESD51-7 4-layer board, TSOT23-5 (printed as TSOT25) | 3 | ||
| Thermal Resistance Junction-to-Case | θJC | 110 | C/W | TSOT23-5 (printed as TSOT25) | 3 | ||
| Undervoltage Lockout Hysteresis | 92 | mV | 4 | ||||
| EN Threshold Rising at VIN = 2.5V | VEN | 1.1 | V | VEN Rising, VIN = 2.5V | 4 | ||
| EN Hysteresis | 100 | mV | 4 | ||||
| EN Input Bias Current | 1 | µA | VEN = 0V, 6V | 4 | |||
| SW On-Resistance | RDS(ON) | 0.65 | Ω | Guaranteed by design (note 5) | 4 | ||
| SW Current Limit | 1.9 | A | Guaranteed by design (note 5) | 4 | |||
| SW Leakage | 1 | µA | VSW = 15V | 4 | |||
| Thermal Shutdown | 160 | °C | Guaranteed by design (note 5) | 4 |
CAD (KiCad official)
- Symbol:
MP1541DJ-LF-Z - Footprint:
Package_TO_SOT_SMD:TSOT-23-5 - 3D model: TSOT-23-5 (KiCad packages3D, STEP)
- 3D model files:
mp1541dj-lf-z-etched.step/mp1541dj-lf-z-etched.glbcarry the MPN laser-etched on the die in a toggleableAdom.LaserEtchgroup (Fusion-ready);mp1541dj-lf-z.step/mp1541dj-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
76b6bc359ddc81fc, 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).
# MP1541DJ-LF-Z
**Monolithic Power Systems** · Global Sourcing Parts · TSOT-23-5
MP1541DJ-LF-Z from Monolithic Power Systems, in a TSOT-23-5. 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 | SW | output | Power switch output and drain of the internal MOSFET; connect the power inductor and output rectifier to SW, which can swing between GND and 22V. |
| 2 | GND | power_in | Ground pin; the ground return of the input and output capacitors should be tied close to this pin. |
| 3 | FB | input | Feedback input with a 1.25V feedback voltage; connect a resistor divider to FB. |
| 4 | EN | input | Regulator on/off control input where a high input turns the converter on and a low input turns it off, and EN cannot be left floating. |
| 5 | IN | power_in | Input supply pin that must be locally bypassed. |
## Key specifications
| Parameter | Value |
|---|---|
| Manufacturer | Monolithic Power Systems |
| Package | TSOT-23-5 |
| Category | Global Sourcing Parts |
| Pins | 5 |
## Electrical characteristics
Limits as printed in the datasheet (page.json `metadata.characteristics` carries them as data).
| Parameter | Symbol | Min | Typ | Max | Unit | Conditions | Page |
|---|---|---|---|---|---|---|---|
| Operating Input Voltage | VIN | 2.5 | | 6 | V | | 4 |
| Switching Frequency | fSW | 1 | 1.3 | 1.6 | MHz | | 4 |
| EN Threshold | VEN | 1 | 1.3 | 1.6 | V | VEN Rising | 4 |
| FB Voltage | VFB | 1.21 | 1.25 | 1.29 | V | | 4 |
| Undervoltage Lockout | | 2.25 | | 2.45 | V | | 4 |
| Supply Current (Shutdown) | | 0.1 | | 1 | µA | VEN = 0V | 4 |
| Supply Current (Quiescent) | | 635 | | 850 | µA | VFB = 1.3V | 4 |
| Maximum Duty Cycle | | 80 | | 85 | % | VFB = 0V | 4 |
| FB Input Bias Current | | -100 | | -30 | nA | VFB = 1.25V | 4 |
| Absolute Maximum SW Pin Voltage | | -0.3 | | 25 | V | SW Pin | 3 |
| Absolute Maximum All Other Pins Voltage | | -0.3 | | 6.5 | V | All other pins | 3 |
| Absolute Maximum Storage Temperature | | -65 | | 150 | °C | | 3 |
| Absolute Maximum Junction Temperature | | | | 150 | °C | | 3 |
| Absolute Maximum Lead Temperature | | | | 260 | °C | | 3 |
| Continuous Power Dissipation | | | | 0.47 | W | TA = +25°C, TSOT23-5 | 3 |
| Supply Voltage | VIN | 2.5 | | 6 | V | | 3 |
| Output Voltage | VOUT | 3 | | 22 | V | | 3 |
| Operating Temperature | | -40 | | 85 | °C | | 3 |
| Maximum Junction Temperature | TJ | | | 125 | °C | | 3 |
| Thermal Resistance Junction-to-Ambient | θJA | | 220 | | C/W | JESD51-7 4-layer board, TSOT23-5 (printed as TSOT25) | 3 |
| Thermal Resistance Junction-to-Case | θJC | | 110 | | C/W | TSOT23-5 (printed as TSOT25) | 3 |
| Undervoltage Lockout Hysteresis | | | 92 | | mV | | 4 |
| EN Threshold Rising at VIN = 2.5V | VEN | | 1.1 | | V | VEN Rising, VIN = 2.5V | 4 |
| EN Hysteresis | | | 100 | | mV | | 4 |
| EN Input Bias Current | | | 1 | | µA | VEN = 0V, 6V | 4 |
| SW On-Resistance | RDS(ON) | | 0.65 | | Ω | Guaranteed by design (note 5) | 4 |
| SW Current Limit | | | 1.9 | | A | Guaranteed by design (note 5) | 4 |
| SW Leakage | | | 1 | | µA | VSW = 15V | 4 |
| Thermal Shutdown | | | 160 | | °C | Guaranteed by design (note 5) | 4 |
## CAD (KiCad official)
- Symbol: `MP1541DJ-LF-Z`
- Footprint: `Package_TO_SOT_SMD:TSOT-23-5`
- 3D model: TSOT-23-5 (KiCad packages3D, STEP)
- 3D model files: `mp1541dj-lf-z-etched.step` / `mp1541dj-lf-z-etched.glb` carry the MPN laser-etched on the die in a toggleable `Adom.LaserEtch` group (Fusion-ready); `mp1541dj-lf-z.step` / `mp1541dj-lf-z.glb` are the bare package body.
## Provenance
Data extracted from the manufacturer datasheet, not a distributor listing:
- **Datasheet:** [Monolithic Power Systems datasheet](https://jlcpcb.com/api/file/downloadByFileSystemAccessId/8586171930617516032) (11 pp, sha256 `76b6bc359ddc81fc`, retrieved 2026-10-17, 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](docs/mp1541dj-lf-z-datasheet.pdf)