component
MP3430HQ-LF-Z
Public Made by Adomby adom
Monolithic Power Systems Global Sourcing Parts, QFN-16(3x3). Pinout cross-checked by two models against the datasheet, KiCad symbol/footprint/3D.
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MP3430HQ-LF-Z
Monolithic Power Systems · Global Sourcing Parts · QFN-16(3x3)
MP3430HQ-LF-Z from Monolithic Power Systems, in a QFN-16(3x3). 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 | PGND | power_in | Power ground; pins 1 and 16 are connected internally, and for best performance both should be connected to board ground. |
| 2 | VIN | power_in | Input supply with a recommended operating range of 2.7V to 5.5V; locally bypass this pin. |
| 3 | EN | input | Shutdown control: tie to 1.6V or higher to enable the device and to 0.6V or less to disable it. |
| 4 | NC | unconnected | Not connected. |
| 5 | FB | input | Feedback input; connect to the output resistor-divider tap, with a feedback voltage of 0.8V typical (0.77V to 0.824V). |
| 6 | NC | unconnected | Not connected. |
| 7 | MON2 | output | Current-monitor output that sources 50% of the APD current and converts it to a reference voltage through an external resistor, with a design limit of 2.5V (typ) and 2.5mA (typ). |
| 8 | AGND | power_in | Analog ground. |
| 9 | RLIM | input | Current-limit resistor pin; connect a resistor from RLIM to GND to program the APD current-limit threshold. |
| 10 | MON1 | output | Current-monitor output that sources 10% of the APD current and converts it to a reference voltage through an external resistor, with a design limit of 2.5V (typ) and 2.5mA (typ). |
| 11 | NC | unconnected | Not connected. |
| 12 | APD | passive | Connect to the APD cathode; the APD current is mirrored to MON1 and MON2 and limited by the RLIM setting. |
| 13 | MONIN | power_in | Current-monitor supply; connect an external low-pass filter to further reduce supply voltage ripple, with a recommended voltage of 2.7V to 90V. |
| 14 | SW | output | Switch node; minimize the trace length on this pin to reduce EMI, with a recommended voltage of 2.7V to 90V. |
| 15 | SW | output | Switch node; minimize the trace length on this pin to reduce EMI, with a recommended voltage of 2.7V to 90V. |
| 16 | PGND | power_in | Power ground; pins 1 and 16 are connected internally, and for best performance both should be connected to board ground. |
| 17 | EP | passive | Exposed pad (from the footprint; not named in the datasheet pin table). |
Key specifications
| Parameter | Value |
|---|---|
| Manufacturer | Monolithic Power Systems |
| Package | QFN-16(3x3) |
| Category | Global Sourcing Parts |
| Pins | 17 |
Electrical characteristics
Limits as printed in the datasheet (page.json metadata.characteristics carries them as data).
| Parameter | Symbol | Min | Typ | Max | Unit | Conditions | Page |
|---|---|---|---|---|---|---|---|
| Minimum Operating Voltage | VIN MIN | 2.7 | V | 4 | |||
| Maximum Operating Voltage | VIN MAX | 5.5 | V | 4 | |||
| Under-Voltage Lockout Threshold | VUVLO | 2.4 | 2.6 | 2.7 | V | 4 | |
| Under-Voltage Lockout Hysteresis | VUVLOH | 185 | mV | 4 | |||
| EN Threshold | 0.8 | 1.6 | V | EN Rising | 4 | ||
| EN Hysteresis | 150 | mV | 4 | ||||
| Feedback Voltage | VFB | 0.77 | 0.8 | 0.824 | V | 4 | |
| Feedback Line Regulation | RFBL | 0.043 | 0.12 | %/V | 4 | ||
| FB-Pin Bias Current | IFBB | 30 | 100 | nA | VFB=0.8V | 4 | |
| Supply Current | IS | 0.3 | 1 | mA | FB=1V, Not switching | 4 | |
| Supply Current (shutdown) | IS | 0.1 | 0.5 | μA | VEN=0 | 4 | |
| Switching Frequency | fS | 1 | 1.3 | 1.55 | MHz | 4 | |
| Maximum Duty Cycle | DMAX | 76 | 97 | % | 4 | ||
| Switch Current Limit | ISLMT | 0.6 | 0.9 | 1.3 | A | 4 | |
| Switch RDSon | VCESAT | 0.58 | 0.98 | 1.3 | Ω | ISW=150mA | 4 |
| Switch Leakage Current | ISL | 1 | μA | SW=90V, EN=0 | 4 | ||
| EN Pin Pull-Down Current | IENP | 0.2 | μA | EN=0V | 4 | ||
| APD-Current-Monitor Output1 Gain | GCM1 | 0.09 | 0.1 | 0.12 | mA/mA | IAPD=250nA, 10V≤MONIN≤90V | 4 |
| APD-Current-Monitor Output1 Gain | GCM1 | 0.095 | 0.1 | 0.12 | mA/mA | IAPD=2.5mA, 10V≤MONIN≤90V | 4 |
| APD-Current-Monitor Output2 Gain | GCM2 | 0.45 | 0.5 | 0.6 | mA/mA | IAPD=250nA, 10V≤MONIN≤90V | 4 |
| APD-Current-Monitor Output2 Gain | GCM2 | 0.475 | 0.5 | 0.6 | mA/mA | IAPD=2.5mA, 10V≤MONIN≤90V | 4 |
| Monitor-Output1 Voltage Clamp | VMOC | 2.2 | 3.5 | V | 250nA<IAPD<2.5mA | 4 | |
| Monitor-Output2 Voltage Clamp | VMOC | 2.2 | 3.5 | V | 250nA<IAPD<2.5mA | 4 | |
| APD-Monitor Voltage Drop | VADP | 1 | 1.32 | 2 | V | MONIN, ADP at IAPD=1mA, MONIN=40V | 4 |
| APD-Monitor-Current Response Speed (step up) | tdelay1 | 50 | ns | 10μA to 1mA step APD current input | 4 | ||
| APD-Monitor-Current Response Speed (step down) | tdelay2 | 7 | μs | 250nA to 10μA step APD current input | 4 | ||
| APD-Pin Current Limit | IMONINLMT | 2.5 | 4.3 | mA | APD=0V, MONIN=40V, RLIM=16.9kΩ | 4 | |
| APD Current-Limit-Adjustment Range | 2.25 | 3 | mA | RLIM=27.2kΩ, MONIN=10V | 4 | ||
| APD Current-Limit-Adjustment Range | 0.375 | 0.625 | mA | RLIM=137kΩ, MONIN=10V | 4 | ||
| APD Current-Limit-Adjustment Range | 1.85 | 3 | mA | RLIM=27.2kΩ, MONIN=90V | 4 | ||
| APD Current-Limit-Adjustment Range | 0.36 | 0.72 | mA | RLIM=137kΩ, MONIN=90V | 4 | ||
| Input Voltage (recommended) | VIN | 2.7 | 5.5 | V | 3 | ||
| MON1, MON2 (recommended) | 2.2 | V | 3 | ||||
| MONIN, SW, APD Voltage (recommended) | 2.7 | 90 | V | 3 | |||
| Operating Junction Temperature | TJ | -40 | 125 | °C | 3 | ||
| Input Voltage (absolute maximum) | -0.3 | 6.5 | V | 3 | |||
| MONIN, SW, APD Voltage (absolute maximum) | -0.3 | 100 | V | 3 | |||
| EN, FB, RLIM Voltage (absolute maximum) | -0.3 | 6.5 | V | 3 | |||
| MON1, MON2 Voltage (absolute maximum) | -0.3 | 4.5 | V | 3 | |||
| Thermal Resistance Junction-to-Ambient | θJA | 60 | °C/W | QFN16 (3x3mm), JESD51-7 4-layer PCB | 3 | ||
| Thermal Resistance Junction-to-Case | θJC | 12 | °C/W | QFN16 (3x3mm), JESD51-7 4-layer PCB | 3 | ||
| Thermal Shutdown | 160 | °C | 4 | ||||
| Thermal Shutdown Hysteresis | 10 | °C | 4 |
CAD (KiCad official)
- Symbol:
MP3430HQ-LF-Z - Footprint:
Package_DFN_QFN:QFN-16-1EP_3x3mm_P0.5mm_EP1.7x1.7mm - 3D model: QFN-16(3x3) (KiCad packages3D, STEP)
- 3D model files:
mp3430hq-lf-z-etched.step/mp3430hq-lf-z-etched.glbcarry the MPN laser-etched on the die in a toggleableAdom.LaserEtchgroup (Fusion-ready);mp3430hq-lf-z.step/mp3430hq-lf-z.glbare the bare package body.
Provenance
Data extracted from the manufacturer datasheet, not a distributor listing:
- Datasheet: Monolithic Power Systems datasheet (16 pp, sha256
32f2023078cf1ffe, 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).
# MP3430HQ-LF-Z
**Monolithic Power Systems** · Global Sourcing Parts · QFN-16(3x3)
MP3430HQ-LF-Z from Monolithic Power Systems, in a QFN-16(3x3). 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 | PGND | power_in | Power ground; pins 1 and 16 are connected internally, and for best performance both should be connected to board ground. |
| 2 | VIN | power_in | Input supply with a recommended operating range of 2.7V to 5.5V; locally bypass this pin. |
| 3 | EN | input | Shutdown control: tie to 1.6V or higher to enable the device and to 0.6V or less to disable it. |
| 4 | NC | unconnected | Not connected. |
| 5 | FB | input | Feedback input; connect to the output resistor-divider tap, with a feedback voltage of 0.8V typical (0.77V to 0.824V). |
| 6 | NC | unconnected | Not connected. |
| 7 | MON2 | output | Current-monitor output that sources 50% of the APD current and converts it to a reference voltage through an external resistor, with a design limit of 2.5V (typ) and 2.5mA (typ). |
| 8 | AGND | power_in | Analog ground. |
| 9 | RLIM | input | Current-limit resistor pin; connect a resistor from RLIM to GND to program the APD current-limit threshold. |
| 10 | MON1 | output | Current-monitor output that sources 10% of the APD current and converts it to a reference voltage through an external resistor, with a design limit of 2.5V (typ) and 2.5mA (typ). |
| 11 | NC | unconnected | Not connected. |
| 12 | APD | passive | Connect to the APD cathode; the APD current is mirrored to MON1 and MON2 and limited by the RLIM setting. |
| 13 | MONIN | power_in | Current-monitor supply; connect an external low-pass filter to further reduce supply voltage ripple, with a recommended voltage of 2.7V to 90V. |
| 14 | SW | output | Switch node; minimize the trace length on this pin to reduce EMI, with a recommended voltage of 2.7V to 90V. |
| 15 | SW | output | Switch node; minimize the trace length on this pin to reduce EMI, with a recommended voltage of 2.7V to 90V. |
| 16 | PGND | power_in | Power ground; pins 1 and 16 are connected internally, and for best performance both should be connected to board ground. |
| 17 | EP | passive | Exposed pad (from the footprint; not named in the datasheet pin table). |
## Key specifications
| Parameter | Value |
|---|---|
| Manufacturer | Monolithic Power Systems |
| Package | QFN-16(3x3) |
| Category | Global Sourcing Parts |
| Pins | 17 |
## Electrical characteristics
Limits as printed in the datasheet (page.json `metadata.characteristics` carries them as data).
| Parameter | Symbol | Min | Typ | Max | Unit | Conditions | Page |
|---|---|---|---|---|---|---|---|
| Minimum Operating Voltage | VIN MIN | 2.7 | | | V | | 4 |
| Maximum Operating Voltage | VIN MAX | | | 5.5 | V | | 4 |
| Under-Voltage Lockout Threshold | VUVLO | 2.4 | 2.6 | 2.7 | V | | 4 |
| Under-Voltage Lockout Hysteresis | VUVLOH | | 185 | | mV | | 4 |
| EN Threshold | | 0.8 | | 1.6 | V | EN Rising | 4 |
| EN Hysteresis | | | 150 | | mV | | 4 |
| Feedback Voltage | VFB | 0.77 | 0.8 | 0.824 | V | | 4 |
| Feedback Line Regulation | RFBL | 0.043 | | 0.12 | %/V | | 4 |
| FB-Pin Bias Current | IFBB | | 30 | 100 | nA | VFB=0.8V | 4 |
| Supply Current | IS | | 0.3 | 1 | mA | FB=1V, Not switching | 4 |
| Supply Current (shutdown) | IS | | 0.1 | 0.5 | μA | VEN=0 | 4 |
| Switching Frequency | fS | 1 | 1.3 | 1.55 | MHz | | 4 |
| Maximum Duty Cycle | DMAX | 76 | | 97 | % | | 4 |
| Switch Current Limit | ISLMT | 0.6 | 0.9 | 1.3 | A | | 4 |
| Switch RDSon | VCESAT | 0.58 | 0.98 | 1.3 | Ω | ISW=150mA | 4 |
| Switch Leakage Current | ISL | | 1 | | μA | SW=90V, EN=0 | 4 |
| EN Pin Pull-Down Current | IENP | | 0.2 | | μA | EN=0V | 4 |
| APD-Current-Monitor Output1 Gain | GCM1 | 0.09 | 0.1 | 0.12 | mA/mA | IAPD=250nA, 10V≤MONIN≤90V | 4 |
| APD-Current-Monitor Output1 Gain | GCM1 | 0.095 | 0.1 | 0.12 | mA/mA | IAPD=2.5mA, 10V≤MONIN≤90V | 4 |
| APD-Current-Monitor Output2 Gain | GCM2 | 0.45 | 0.5 | 0.6 | mA/mA | IAPD=250nA, 10V≤MONIN≤90V | 4 |
| APD-Current-Monitor Output2 Gain | GCM2 | 0.475 | 0.5 | 0.6 | mA/mA | IAPD=2.5mA, 10V≤MONIN≤90V | 4 |
| Monitor-Output1 Voltage Clamp | VMOC | 2.2 | | 3.5 | V | 250nA<IAPD<2.5mA | 4 |
| Monitor-Output2 Voltage Clamp | VMOC | 2.2 | | 3.5 | V | 250nA<IAPD<2.5mA | 4 |
| APD-Monitor Voltage Drop | VADP | 1 | 1.32 | 2 | V | MONIN, ADP at IAPD=1mA, MONIN=40V | 4 |
| APD-Monitor-Current Response Speed (step up) | tdelay1 | | 50 | | ns | 10μA to 1mA step APD current input | 4 |
| APD-Monitor-Current Response Speed (step down) | tdelay2 | | 7 | | μs | 250nA to 10μA step APD current input | 4 |
| APD-Pin Current Limit | IMONINLMT | 2.5 | 4.3 | | mA | APD=0V, MONIN=40V, RLIM=16.9kΩ | 4 |
| APD Current-Limit-Adjustment Range | | 2.25 | | 3 | mA | RLIM=27.2kΩ, MONIN=10V | 4 |
| APD Current-Limit-Adjustment Range | | 0.375 | | 0.625 | mA | RLIM=137kΩ, MONIN=10V | 4 |
| APD Current-Limit-Adjustment Range | | 1.85 | | 3 | mA | RLIM=27.2kΩ, MONIN=90V | 4 |
| APD Current-Limit-Adjustment Range | | 0.36 | | 0.72 | mA | RLIM=137kΩ, MONIN=90V | 4 |
| Input Voltage (recommended) | VIN | 2.7 | | 5.5 | V | | 3 |
| MON1, MON2 (recommended) | | | | 2.2 | V | | 3 |
| MONIN, SW, APD Voltage (recommended) | | 2.7 | | 90 | V | | 3 |
| Operating Junction Temperature | TJ | -40 | | 125 | °C | | 3 |
| Input Voltage (absolute maximum) | | -0.3 | | 6.5 | V | | 3 |
| MONIN, SW, APD Voltage (absolute maximum) | | -0.3 | | 100 | V | | 3 |
| EN, FB, RLIM Voltage (absolute maximum) | | -0.3 | | 6.5 | V | | 3 |
| MON1, MON2 Voltage (absolute maximum) | | -0.3 | | 4.5 | V | | 3 |
| Thermal Resistance Junction-to-Ambient | θJA | | 60 | | °C/W | QFN16 (3x3mm), JESD51-7 4-layer PCB | 3 |
| Thermal Resistance Junction-to-Case | θJC | | 12 | | °C/W | QFN16 (3x3mm), JESD51-7 4-layer PCB | 3 |
| Thermal Shutdown | | | 160 | | °C | | 4 |
| Thermal Shutdown Hysteresis | | | 10 | | °C | | 4 |
## CAD (KiCad official)
- Symbol: `MP3430HQ-LF-Z`
- Footprint: `Package_DFN_QFN:QFN-16-1EP_3x3mm_P0.5mm_EP1.7x1.7mm`
- 3D model: QFN-16(3x3) (KiCad packages3D, STEP)
- 3D model files: `mp3430hq-lf-z-etched.step` / `mp3430hq-lf-z-etched.glb` carry the MPN laser-etched on the die in a toggleable `Adom.LaserEtch` group (Fusion-ready); `mp3430hq-lf-z.step` / `mp3430hq-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/8603419732792131584) (16 pp, sha256 `32f2023078cf1ffe`, retrieved 2026-10-21, 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/mp3430hq-lf-z-datasheet.pdf)