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TPS54331DDA
Public Made by Adomby adom
Texas Instruments DC-DC Converters, ESOP-8. 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
markdownTPS54331DDA
Texas Instruments · DC-DC Converters · ESOP-8
TPS54331DDA from Texas Instruments, in a ESOP-8. 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 | BOOT | output | Bootstrap voltage output for high-side MOSFET gate drive; requires 0.1μF capacitor between BOOT and PH pins to maintain gate bias voltage above 2.1V minimum. |
| 2 | VIN | power_in | Input power supply voltage pin; supports 3.5V to 28V operating range. |
| 3 | EN | input | Enable/disable control input; pull below 1.25V to disable converter or leave floating to enable; UVLO threshold programmable using external resistor divider. |
| 4 | SS | input | Slow start input; connect external capacitor to set output rise time from 1ms to 10ms using 2μA charge current. |
| 5 | VSENSE | input | Feedback input to inverting node of transconductance error amplifier for output voltage regulation and current limiting. |
| 6 | COMP | output | Error amplifier output and PWM comparator input; connect external frequency compensation network between this pin and ground. |
| 7 | GND | power_in | Ground reference pin; low-side MOSFET source connection and current return path. |
| 8 | PH | output | High-side MOSFET source output; internal 80mΩ MOSFET switch node with 570kHz fixed switching frequency. |
| 9 | PowerPAD | power_in | Exposed thermal pad for ground connection and heat dissipation; must be connected to ground plane for proper thermal performance (DDA package only). |
Key specifications
| Parameter | Value |
|---|---|
| Manufacturer | Texas Instruments |
| Package | ESOP-8 |
| Category | Power Management (PMIC) |
| Pins | 9 |
Electrical characteristics
Limits as printed in the datasheet (page.json metadata.characteristics carries them as data).
| Parameter | Symbol | Min | Typ | Max | Unit | Conditions | Page |
|---|---|---|---|---|---|---|---|
| VIN input voltage | VIN | -0.3 | 30 | V | 4 | ||
| EN input voltage | EN | -0.3 | 6 | V | 4 | ||
| BOOT input voltage | BOOT | 38 | V | 4 | |||
| VSENSE input voltage | VSENSE | -0.3 | 3 | V | 4 | ||
| COMP input voltage | COMP | -0.3 | 3 | V | 4 | ||
| SS input voltage | SS | -0.3 | 3 | V | 4 | ||
| BOOT-PH output voltage | BOOT-PH | 8 | V | 4 | |||
| PH output voltage | PH | -0.6 | 30 | V | 4 | ||
| PH transient, 10ns, from GND to negative peak | PH | -5 | V | 10ns transient from GND to negative peak | 4 | ||
| EN source current | EN | 100 | μA | 4 | |||
| BOOT source current | BOOT | 100 | mA | 4 | |||
| VSENSE source current | VSENSE | 10 | μA | 4 | |||
| PH source current | PH | 9 | A | 4 | |||
| VIN sink current | VIN | 9 | A | 4 | |||
| COMP sink current | COMP | 100 | μA | 4 | |||
| SS sink current | SS | 200 | μA | 4 | |||
| Operating junction temperature | TJ | -40 | 150 | °C | 4 | ||
| Storage temperature range | Tstg | -65 | 150 | °C | 4 | ||
| ESD human body model (HBM), all pins | V(ESD) | -2 | 2 | kV | ANSI/ESDA/JEDEC JS-001 | 4 | |
| ESD charged device model (CDM), all pins | V(ESD) | -500 | 500 | V | JEDEC JESD22-C101 | 4 | |
| Operating input voltage on VIN pin | VIN | 3.5 | 28 | V | 4 | ||
| Operating junction temperature | TJ | -40 | 150 | °C | 4 | ||
| Internal undervoltage lockout threshold, rising and falling | 3.5 | V | rising and falling | 5 | |||
| Shutdown supply current | 1 | 4 | μA | EN = 0V, VIN = 12V, -40°C to 85°C | 5 | ||
| Operating non-switching supply current | 110 | 190 | μA | VSENSE = 0.85V | 5 | ||
| Enable threshold, rising and falling | 1.25 | 1.35 | V | rising and falling | 5 | ||
| EN input current at enable threshold -50mV | -1 | μA | enable threshold - 50mV | 5 | |||
| EN input current at enable threshold +50mV | -4 | μA | enable threshold + 50mV | 5 | |||
| Voltage reference | 0.772 | 0.8 | 0.828 | V | 5 | ||
| High-side MOSFET on-resistance | 115 | 200 | mΩ | BOOT-PH = 3V, VIN = 3.5V | 5 | ||
| High-side MOSFET on-resistance | 80 | 150 | mΩ | BOOT-PH = 6V, VIN = 12V | 5 | ||
| Error amplifier source and sink current | -7 | 7 | μA | V(COMP) = 1V, 100mV overdrive | 5 | ||
| Current limit threshold | 3.5 | 5.8 | A | VIN = 12V | 5 | ||
| Switching frequency | 456 | 570 | 684 | kHz | VIN = 12V, 25°C | 6 | |
| Minimum controllable on-time | 105 | 130 | ns | VIN = 12V, 25°C | 6 | ||
| Maximum controllable duty cycle | 90 | 93 | % | BOOT-PH = 6V | 6 | ||
| Error amplifier transconductance (gm) | 92 | μmhos | -2μA < I(COMP) < 2μA, V(COMP) = 1V | 5 | |||
| Error amplifier DC gain | 800 | V/V | VSENSE = 0.8V | 5 | |||
| Error amplifier unity gain bandwidth | 2.7 | MHz | 5pF from COMP to GND pin | 5 | |||
| Switch current to COMP transconductance | 12 | A/V | VIN = 12V | 5 | |||
| Eco-mode switch current threshold | 160 | mA | 5 | ||||
| Thermal shutdown | 165 | °C | 5 | ||||
| Soft-start charge current | 2 | μA | V(SS) = 0.4V | 5 | |||
| SS to VSENSE matching | 10 | mV | V(SS) = 0.4V | 5 | |||
| Junction-to-ambient thermal resistance (DDA) | RθJA | 48.7 | °C/W | 5 | |||
| Junction-to-case (top) thermal resistance (DDA) | RθJC(top) | 52.4 | °C/W | 5 | |||
| Junction-to-board thermal resistance (DDA) | RθJB | 25.5 | °C/W | 5 | |||
| Junction-to-top characterization parameter (DDA) | ψJT | 8.4 | °C/W | 5 | |||
| Junction-to-board characterization parameter (DDA) | ψJB | 25.2 | °C/W | 5 | |||
| Junction-to-case (bottom) thermal resistance (DDA) | RθJC(bot) | 2.3 | °C/W | 5 |
CAD (KiCad official)
- Symbol:
TPS54331DDA - Footprint:
Package_SO:SOIC-8-1EP_3.9x4.9mm_P1.27mm_EP2.41x3.3mm - 3D model: ESOP-8 (KiCad packages3D, STEP)
- 3D model files:
tps54331dda-etched.step/tps54331dda-etched.glbcarry the MPN laser-etched on the die in a toggleableAdom.LaserEtchgroup (Fusion-ready);tps54331dda.step/tps54331dda.glbare the bare package body.
Provenance
Data extracted from the manufacturer datasheet, not a distributor listing:
- Datasheet: Texas Instruments datasheet (40 pp, sha256
6ac89d4fddb009ba, retrieved 2026-09-24, tier: lcsc) - Datasheet language: Chinese. Pin names, descriptions, and specs on this page were extracted and translated to English by ds2sf; the linked PDF is the manufacturer original.
- Extractor: parts-factory
2.0.0/extract_pins 0.2, primaryclaude-haiku-4-5-20251001(text), consensusclaude-sonnet-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).