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TMI3113B
Public Made by Adomby adom
TMI DC-DC Converters, SOT-23-5. 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
markdownTMI3113B
TMI · DC-DC Converters · SOT-23-5
TMI3113B from TMI, in a SOT-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 | EN | input | Chip enable pin: drive EN above the EN rising threshold to turn the part on and below the EN falling threshold to turn it off; do not leave EN floating. |
| 2 | GND | power_in | Ground pin. |
| 3 | LX | output | Power switch output and switch node connected to the inductor, tied to the drains of the internal P-ch and N-ch MOSFET switches. |
| 4 | VIN | power_in | Analog supply input; operating input voltage range is 2.7 V to 5.5 V. |
| 5 | FB | input | Output voltage feedback pin; an internal resistive divider scales the output voltage for comparison to the internal 0.6 V reference. |
Key specifications
| Parameter | Value |
|---|---|
| Manufacturer | TMI |
| Package | SOT-23-5 |
| Category | Power Management (PMIC) |
| 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 |
|---|---|---|---|---|---|---|---|
| Input Supply Voltage | -0.3 | 7 | V | 2 | |||
| LX Voltages | -0.3 | 7 | V | 2 | |||
| LX Voltage (<10ns transient) | -2.5 | 7.5 | V | <10ns transient | 2 | ||
| LX Voltage (<5ns transient) | -3.5 | 8.5 | V | <5ns transient | 2 | ||
| EN, FB, PG Voltage | -0.3 | 7 | V | 2 | |||
| Storage Temperature Range | -65 | 150 | °C | 2 | |||
| Junction Temperature (Note2) | 160 | °C | 2 | ||||
| Power Dissipation (SOT23-5) | 1000 | mW | 2 | ||||
| Lead Temperature (Soldering,10s) | 260 | °C | Soldering, 10s | 2 | |||
| Voltage Range IN | 2.7 | 5.5 | V | 3 | |||
| TJ Operating Junction Temperature Range | TJ | -40 | 125 | °C | 3 | ||
| TA Operating Ambient Temperature Range | TA | -40 | 85 | °C | 3 | ||
| Input Voltage Range | 2.7 | 5.5 | V | 4 | |||
| Input UVLO Threshold | 2.35 | 2.5 | 2.65 | V | VIN Rising | 4 | |
| Input UVLO Hysteresis | 0.4 | 0.5 | 0.6 | V | 4 | ||
| Quiescent Current | 50 | 85 | µA | VEN=2.0V, IOUT=0A, VFB=VREF x 105% | 4 | ||
| Shutdown Current | 0.1 | 1 | µA | VEN =0V | 4 | ||
| Regulated Feedback Voltage VFB | VFB | 0.588 | 0.6 | 0.612 | V | PWM operation, TA = 25°C | 4 |
| Output Voltage Accuracy | -3 | 3 | %VOUT | VIN = 2.7V to 5.5V, IOUT=10mA to 3000mA | 4 | ||
| Oscillation Frequency | 0.7 | 1 | 1.3 | MHz | VOUT=100% | 4 | |
| Oscillation Frequency | 150 | 300 | 450 | kHz | VOUT=0V | 4 | |
| Peak Current Limit | 3.3 | 3.5 | 4 | A | VIN= 5V, VOUT=90% | 4 | |
| EN Rising Threshold | 0.9 | 1.1 | 1.4 | V | VIN=5V, TA=25°C | 4 | |
| EN Rising Threshold | 0.75 | 0.9 | 1.1 | V | VIN=3.3V, TA=25°C | 4 | |
| EN Falling Threshold | 0.75 | 1 | 1.1 | V | VIN=5V, TA=25°C | 4 | |
| EN Falling Threshold | 0.65 | 0.9 | 1.15 | V | VIN=3.3V, TA=25°C | 4 | |
| Input OVP Threshold | 6.1 | V | VIN Rising | 4 | |||
| PFM operation, No Load, feedback voltage | 0.609 | V | PFM operation, No Load, TA = 25°C | 4 | |||
| Reference Voltage Line Regulation | 0.1 | %/V | VIN=2.7V to 5.5V | 4 | |||
| On Resistance of PMOS | 95 | mΩ | ILX=100mA | 4 | |||
| On Resistance of NMOS | 50 | mΩ | ILX=-100mA | 4 | |||
| EN Leakage Current | 1 | µA | 4 | ||||
| LX Leakage Current | 1 | µA | VEN=0V, VIN=VLX=5V | 4 | |||
| Thermal Shutdown Threshold | 155 | °C | 4 | ||||
| Thermal Shutdown Hysteresis | 20 | °C | 4 | ||||
| Junction-to-ambient thermal resistance (SOT23-5) | θJA | 135 | °C/W | 3 | |||
| Junction-to-case(top) thermal resistance (SOT23-5) | θJC | 55 | °C/W | 3 | |||
| Junction-to-case(top) characterization parameter (SOT23-5) | ψJC | 12 | °C/W | 3 |
CAD (KiCad official)
- Symbol:
TMI3113B - Footprint:
Package_TO_SOT_SMD:SOT-23-5 - 3D model: SOT-23-5 (KiCad packages3D, STEP)
- 3D model files:
tmi3113b-etched.step/tmi3113b-etched.glbcarry the MPN laser-etched on the die in a toggleableAdom.LaserEtchgroup (Fusion-ready);tmi3113b.step/tmi3113b.glbare the bare package body.
Provenance
Data extracted from the manufacturer datasheet, not a distributor listing:
- Datasheet: TMI datasheet (16 pp, sha256
8ab8c528a0220703, retrieved 2026-10-19, 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).