component
MP4570GF-Z
Public Made by Adomby adom
Monolithic Power Systems Global Sourcing Parts, TSSOP-20-EP. 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
markdownMP4570GF-Z
Monolithic Power Systems · Global Sourcing Parts · TSSOP-20-EP
MP4570GF-Z from Monolithic Power Systems, in a TSSOP-20-EP. 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 | COMP | passive | Compensation network setting: connect an external resistor in series with a capacitor between this pin and GND. |
| 2 | FB | input | Feedback input to the PWM comparator; connect an external resistive divider between the output and GND (VFB is 1V nominal, 0.98V to 1.02V). |
| 3 | FREQ | input | Switching frequency setting pin: a resistor from this pin to GND sets fSW, and an external SYNC clock applied here (HIGH above 1.5V, LOW below 1V, 100kHz to 1MHz recommended) makes the converter follow it. |
| 4 | EN | input | Enable input: drive above 1.6V to turn the regulator on and below 1.3V to turn it off; there is no internal pull-up or pull-down, so the pin must not be left floating. |
| 5 | BST | power_out | Bootstrap pin for the internal floating high-side MOSFET driver; connect a bootstrap capacitor (0.1µF typical) between this pin and SW. |
| 6 | VIN | power_in | Input supply for the internal control circuitry and VDD regulator; place a decoupling capacitor to ground close to this pin, with a recommended supply range of 4.5V to 55V. |
| 7 | VIN | power_in | Input supply for the internal control circuitry and VDD regulator; place a decoupling capacitor to ground close to this pin, with a recommended supply range of 4.5V to 55V. |
| 8 | VIN | power_in | Input supply for the internal control circuitry and VDD regulator; place a decoupling capacitor to ground close to this pin, with a recommended supply range of 4.5V to 55V. |
| 9 | NC | unconnected | Not connected; float this pin in the application. |
| 10 | SW | power_out | Switch node, the output node from the internal high-side MOSFET source; absolute maximum VSW is -0.5V to (VIN+0.5V). |
| 11 | SW | power_out | Switch node, the output node from the internal high-side MOSFET source; absolute maximum VSW is -0.5V to (VIN+0.5V). |
| 12 | NC | unconnected | Not connected; float this pin in the application. |
| 13 | GND | power_in | Power ground pin for the internal power MOSFETs; connect to a large copper ground area for thermal performance. |
| 14 | GND | power_in | Power ground pin for the internal power MOSFETs; connect to a large copper ground area for thermal performance. |
| 15 | GND | power_in | Power ground pin for the internal power MOSFETs; connect to a large copper ground area for thermal performance. |
| 16 | VDD | power_out | Power output for the internal MOSFET driver and BST charging circuit, regulated at 3.6V with BIAS floating and 4.8V with BIAS above 5.4V; a 1µF decoupling capacitor is needed close to the pin. |
| 17 | BIAS | power_in | Optional external 5V supply input that powers the internal circuitry when used, recommended in the 3.3V to 5.5V range; float or connect to GND if not used. |
| 18 | PG | output | Power good open-drain output indicating normal operation after soft start; connect a resistor to a pull-up source (e.g., 100kΩ) if used. |
| 19 | SS | passive | Optional external soft-start setting: connect a capacitor between this pin and GND to set soft-start time, or float the pin to activate the internal 0.5ms soft-start. |
| 20 | AGND | power_in | Ground for the internal logic and signal circuits. |
| 21 | EP | passive | Exposed pad (from the footprint; not named in the datasheet pin table). |
Key specifications
| Parameter | Value |
|---|---|
| Manufacturer | Monolithic Power Systems |
| Package | TSSOP-20-EP |
| Category | Global Sourcing Parts |
| Pins | 21 |
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 | 0.98 | 1 | 1.02 | V | 4.5V ≤ VIN ≤ 55V | 5 |
| Error AMP Transconductance | 430 | 630 | 730 | μA/V | 5 | ||
| COMP Sink/Source Current | ICOMP | 13 | 30 | 52 | μA | 5 | |
| Upper Switch On Resistance | RON_HS | 90 | 120 | mΩ | 5 | ||
| Lower Switch On Resistance | RON_LS | 70 | 100 | mΩ | 5 | ||
| Peak Current Limit | ILIMIT | 4.5 | 5.7 | 7.5 | A | 10% Duty Cycle | 5 |
| Quiescent Supply Current | IQ | 450 | 550 | µA | No load, Without Switching | 5 | |
| Shutdown Supply Current | ISHDN | 7 | 12 | µA | VEN = 0V | 5 | |
| VDD Regulator Output Voltage (BIAS = NC) | VDD | 3.4 | 3.6 | 3.8 | V | BIAS = NC | 5 |
| VDD Regulator Output Voltage (BIAS = External 5V Power) | VDD | 4.6 | 4.8 | V | BIAS = External 5V Power | 5 | |
| EN Rising Threshold | VEN_R | 1.4 | 1.6 | 1.8 | V | 5 | |
| EN Falling Threshold | VEN_F | 1.1 | 1.3 | 1.5 | V | 5 | |
| VIN UVLO Rising Threshold | VINUV R | 3.7 | 3.9 | 4.1 | V | 5 | |
| VIN UVLO Falling Threshold | VINUV F | 3.3 | 3.5 | 3.7 | V | 5 | |
| External Soft Start Capacitor Charging Current | ISS | 2.5 | 4 | 5.5 | μA | VSS=1V | 5 |
| Switching Frequency | fSW | 400 | 520 | 640 | kHz | RFREQ=100k | 6 |
| Output OVP Threshold | VOVP | 108 | 115 | 122 | % | VFB(OVP)/VFB | 6 |
| Power Good Threshold (VOUT Rising) | VPG_TH | 86 | 90 | 94 | % | VOUT Rising, VFB(PG)/VFB | 6 |
| Power Good Threshold (VOUT Falling) | VPG_TH | 81 | 85 | 89 | % | VOUT Falling, VFB(PG)/VFB | 6 |
| Power Good Delay (VOUT Rising) | tPG_DL | 8 | 22 | 37 | μs | VOUT Rising | 6 |
| Power Good Delay (VOUT Falling) | tPG_DL | 8 | 21 | 33 | μs | VOUT Falling | 6 |
| SYNC Frequency Range | fSYNC | 100 | 1000 | kHz | 6 | ||
| Thermal Shutdown | TSD | 150 | 170 | °C | Derived from bench characterization, not tested in production (note 4) | 6 | |
| Upper Switch Leakage Current | ILKG_SW | 10 | 300 | nA | VEN = 0V, VSW = 0V | 5 | |
| FB Current | IFB | 10 | 50 | nA | VFB=1.07V | 5 | |
| SYNC Leakage Current | ILKG_SYNC | 10 | 100 | nA | 6 | ||
| Absolute max: Supply Voltage VIN | VIN | 60 | V | 4 | |||
| Absolute max: VSW | VSW | -0.5 | V | Upper limit printed as VIN+0.5V (not converted) | 4 | ||
| Absolute max: All Other Pins | -0.3 | 6 | V | 4 | |||
| Absolute max: EN Sink Current | 150 | μA | 4 | ||||
| Absolute max: Continuous Power Dissipation TSSOP-20 EP | 2.78 | W | TA = 25°C | 4 | |||
| Absolute max: Junction Temperature | 150 | °C | 4 | ||||
| Absolute max: Lead Temperature | 260 | °C | 4 | ||||
| Absolute max: Storage Temperature | -65 | 150 | °C | 4 | |||
| Recommended: Supply Voltage VIN | VIN | 4.5 | 55 | V | 4 | ||
| Recommended: Output Voltage VOUT | VOUT | 1 | V | Upper limit printed as 0.9·VIN (not converted) | 4 | ||
| Recommended: Operating Junction Temperature | TJ | -40 | 125 | °C | 4 | ||
| Thermal Resistance Junction-to-Ambient | θJA | 45 | °C/W | Measured on JESD51-7, 4-layer PCB | 4 | ||
| Thermal Resistance Junction-to-Case | θJC | 10 | °C/W | 4 | |||
| Minimum Off Time | tOFF MIN | 100 | ns | 5 | |||
| Minimum On Time | tON_MIN | 90 | ns | 5 | |||
| EN Threshold Hysteresis | VEN_HYS | 300 | mV | 5 | |||
| VIN UVLO Threshold Hysteresis | VINUV HYS | 400 | mV | 5 | |||
| Power Good Hysteresis | VPG_HYS | 5 | % | ΔVFB(PG)/VFB | 6 | ||
| Thermal Shutdown Hysteresis | TSD_HYS | 10 | °C | Derived from bench characterization, not tested in production (note 4) | 6 |
CAD (KiCad official)
- Symbol:
MP4570GF-Z - Footprint:
Package_SO:TSSOP-20-1EP_4.4x6.5mm_P0.65mm_EP2.15x3.35mm - 3D model: TSSOP-20-EP, generated from the KiCad footprint (body from the F.Fab outline, terminals on the pads, 1.2 mm nominal TSSOP height). Neither the vendor nor KiCad ships a 3D model for this package, so the dimensions are nominal, not the manufacturer's CAD (STEP)
- 3D model files:
mp4570gf-z-etched.step/mp4570gf-z-etched.glbcarry the MPN laser-etched on the die in a toggleableAdom.LaserEtchgroup (Fusion-ready);mp4570gf-z.step/mp4570gf-z.glbare the bare package body.
Provenance
Data extracted from the manufacturer datasheet, not a distributor listing:
- Datasheet: Monolithic Power Systems datasheet (22 pp, sha256
41b8403f2e52fbe6, 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).