component
TMI3342
Public Made by Adomby adom
TMI DC-DC Converters, SOT-23-6. Pinout cross-checked by two models against the datasheet, KiCad symbol/footprint/3D.
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TMI3342
TMI · DC-DC Converters · SOT-23-6
TMI3342 from TMI, in a SOT-23-6. 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 | BS | power_out | Bootstrap pin: a capacitor connected between SW (LX) and BS is required to form a floating supply for the high-side switch driver, and BS-to-LX is rated to 6 V maximum. |
| 2 | GND | power_in | Ground pin. |
| 3 | FB | input | Output voltage feedback input that connects to the center point of the external resistor divider; regulated feedback voltage is 0.8 V (VREF) and FB is rated -0.3 V to 6 V. |
| 4 | EN | input | Enable input: drive logic-high to enable the IC and logic-low to disable it into micro-power shutdown; do not leave EN floating (EN rising threshold 0.85 V to 1.3 V, 150 mV hysteresis, absolute maximum -0.3 V to VIN). |
| 5 | IN | power_in | Power supply input; the recommended operating input range is 4.5 V to 30 V, with an absolute maximum supply of 33 V. |
| 6 | LX | output | Switching node that connects to the inductor; absolute maximum LX voltage is -0.3 V to 33 V (-3.0 V to 35 V for transients under 10 ns). |
Key specifications
| Parameter | Value |
|---|---|
| Manufacturer | TMI |
| Package | SOT-23-6 |
| Category | Power Management (PMIC) |
| Pins | 6 |
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 | 33 | V | 2 | |||
| Enable pin, EN | -0.3 | V | 2 | ||||
| LX Voltages | -0.3 | 33 | V | 2 | |||
| LX Voltages (<10ns transient) | -3 | 35 | V | <10ns transient | 2 | ||
| FB Voltage | -0.3 | 6 | V | 2 | |||
| BS to LX Voltage | -0.3 | 6 | V | 2 | |||
| Storage Temperature Range | -65 | 150 | °C | 2 | |||
| Junction Temperature (Note2) | 150 | °C | 2 | ||||
| Power Dissipation | 1000 | mW | 2 | ||||
| Lead Temperature (Soldering, 10s) | 260 | °C | Soldering, 10s | 2 | |||
| Voltage Range IN | 4.5 | 30 | V | 3 | |||
| TJ Operating Junction Temperature | TJ | -40 | 125 | °C | 3 | ||
| Input Voltage Range | 4.5 | 30 | V | 4 | |||
| Regulated Feedback Voltage | 0.784 | 0.8 | 0.816 | V | TA=25°C, 4.5V≤VIN≤18V | 4 | |
| FB Input Leakage Current | -0.5 | 0.5 | μA | 4 | |||
| Oscillation Frequency | 250 | 370 | 500 | kHz | VFB=0.7V | 4 | |
| Soft Start Time | 0.5 | 0.7 | 1 | ms | 4 | ||
| EN Rising Threshold | 0.85 | 1.1 | 1.3 | V | 4 | ||
| EN Input Leakage Current | -1 | 1 | μA | VEN=2V | 4 | ||
| Quiescent Current | 350 | 500 | μA | VEN=2V, VFB=VREF x 105% | 4 | ||
| Shutdown Current | 5 | 10 | μA | VIN=12V, EN=0V | 4 | ||
| High-Side Switch Leakage Current | 1 | 10 | μA | VEN=0V, VSW=0V | 4 | ||
| UVLO Rising Threshold | 4.3 | 4.5 | V | 4 | |||
| Input OVP Threshold | 31.5 | V | 4 | ||||
| UVLO Hysteresis | 0.3 | V | 4 | ||||
| High-Side Switch On-Resistance | 250 | mΩ | 4 | ||||
| Low-Side Switch On-Resistance | 120 | mΩ | 4 | ||||
| Switch Valley Current Limit (Note 4) | 2.7 | A | Minimum Duty Cycle | 4 | |||
| Maximum Duty Cycle | 93 | % | VFB=0.7V, No Load | 4 | |||
| Minimum On-Time (Note 4) | 100 | ns | 4 | ||||
| Minimum Off-Time | 180 | ns | 4 | ||||
| Hiccup on Time | 1 | ms | 4 | ||||
| Hiccup Time Before Restart | 4 | ms | 4 | ||||
| EN Hysteresis | 150 | mV | 4 | ||||
| EN Enable Delay Time (Note 4) | 180 | μs | 4 | ||||
| Thermal Shutdown Threshold (Note 4) | 165 | °C | 4 | ||||
| Thermal Shutdown Hysteresis (Note 4) | 25 | °C | 4 | ||||
| θJA Junction-to-ambient thermal resistance | θJA | 120 | °C/W | 3 | |||
| θJC Junction-to-case(top) thermal resistance | θJC | 45 | °C/W | 3 |
CAD (KiCad official)
- Symbol:
TMI3342 - Footprint:
Package_TO_SOT_SMD:SOT-23-6 - 3D model: SOT-23-6 (KiCad packages3D, STEP)
- 3D model files:
tmi3342-etched.step/tmi3342-etched.glbcarry the MPN laser-etched on the die in a toggleableAdom.LaserEtchgroup (Fusion-ready);tmi3342.step/tmi3342.glbare the bare package body.
Provenance
Data extracted from the manufacturer datasheet, not a distributor listing:
- Datasheet: TMI datasheet (12 pp, sha256
b7d7ae5bf264d971, retrieved 2026-10-18, 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).
# TMI3342
**TMI** · DC-DC Converters · SOT-23-6
TMI3342 from TMI, in a SOT-23-6. 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 | BS | power_out | Bootstrap pin: a capacitor connected between SW (LX) and BS is required to form a floating supply for the high-side switch driver, and BS-to-LX is rated to 6 V maximum. |
| 2 | GND | power_in | Ground pin. |
| 3 | FB | input | Output voltage feedback input that connects to the center point of the external resistor divider; regulated feedback voltage is 0.8 V (VREF) and FB is rated -0.3 V to 6 V. |
| 4 | EN | input | Enable input: drive logic-high to enable the IC and logic-low to disable it into micro-power shutdown; do not leave EN floating (EN rising threshold 0.85 V to 1.3 V, 150 mV hysteresis, absolute maximum -0.3 V to VIN). |
| 5 | IN | power_in | Power supply input; the recommended operating input range is 4.5 V to 30 V, with an absolute maximum supply of 33 V. |
| 6 | LX | output | Switching node that connects to the inductor; absolute maximum LX voltage is -0.3 V to 33 V (-3.0 V to 35 V for transients under 10 ns). |
## Key specifications
| Parameter | Value |
|---|---|
| Manufacturer | TMI |
| Package | SOT-23-6 |
| Category | Power Management (PMIC) |
| Pins | 6 |
## 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 | | 33 | V | | 2 |
| Enable pin, EN | | -0.3 | | | V | | 2 |
| LX Voltages | | -0.3 | | 33 | V | | 2 |
| LX Voltages (<10ns transient) | | -3 | | 35 | V | <10ns transient | 2 |
| FB Voltage | | -0.3 | | 6 | V | | 2 |
| BS to LX Voltage | | -0.3 | | 6 | V | | 2 |
| Storage Temperature Range | | -65 | | 150 | °C | | 2 |
| Junction Temperature (Note2) | | | | 150 | °C | | 2 |
| Power Dissipation | | | | 1000 | mW | | 2 |
| Lead Temperature (Soldering, 10s) | | | | 260 | °C | Soldering, 10s | 2 |
| Voltage Range IN | | 4.5 | | 30 | V | | 3 |
| TJ Operating Junction Temperature | TJ | -40 | | 125 | °C | | 3 |
| Input Voltage Range | | 4.5 | | 30 | V | | 4 |
| Regulated Feedback Voltage | | 0.784 | 0.8 | 0.816 | V | TA=25°C, 4.5V≤VIN≤18V | 4 |
| FB Input Leakage Current | | -0.5 | | 0.5 | μA | | 4 |
| Oscillation Frequency | | 250 | 370 | 500 | kHz | VFB=0.7V | 4 |
| Soft Start Time | | 0.5 | 0.7 | 1 | ms | | 4 |
| EN Rising Threshold | | 0.85 | 1.1 | 1.3 | V | | 4 |
| EN Input Leakage Current | | -1 | | 1 | μA | VEN=2V | 4 |
| Quiescent Current | | | 350 | 500 | μA | VEN=2V, VFB=VREF x 105% | 4 |
| Shutdown Current | | | 5 | 10 | μA | VIN=12V, EN=0V | 4 |
| High-Side Switch Leakage Current | | | 1 | 10 | μA | VEN=0V, VSW=0V | 4 |
| UVLO Rising Threshold | | | 4.3 | 4.5 | V | | 4 |
| Input OVP Threshold | | | 31.5 | | V | | 4 |
| UVLO Hysteresis | | | 0.3 | | V | | 4 |
| High-Side Switch On-Resistance | | | 250 | | mΩ | | 4 |
| Low-Side Switch On-Resistance | | | 120 | | mΩ | | 4 |
| Switch Valley Current Limit (Note 4) | | | 2.7 | | A | Minimum Duty Cycle | 4 |
| Maximum Duty Cycle | | | 93 | | % | VFB=0.7V, No Load | 4 |
| Minimum On-Time (Note 4) | | | 100 | | ns | | 4 |
| Minimum Off-Time | | | 180 | | ns | | 4 |
| Hiccup on Time | | | 1 | | ms | | 4 |
| Hiccup Time Before Restart | | | 4 | | ms | | 4 |
| EN Hysteresis | | | 150 | | mV | | 4 |
| EN Enable Delay Time (Note 4) | | | 180 | | μs | | 4 |
| Thermal Shutdown Threshold (Note 4) | | | 165 | | °C | | 4 |
| Thermal Shutdown Hysteresis (Note 4) | | | 25 | | °C | | 4 |
| θJA Junction-to-ambient thermal resistance | θJA | | 120 | | °C/W | | 3 |
| θJC Junction-to-case(top) thermal resistance | θJC | | 45 | | °C/W | | 3 |
## CAD (KiCad official)
- Symbol: `TMI3342`
- Footprint: `Package_TO_SOT_SMD:SOT-23-6`
- 3D model: SOT-23-6 (KiCad packages3D, STEP)
- 3D model files: `tmi3342-etched.step` / `tmi3342-etched.glb` carry the MPN laser-etched on the die in a toggleable `Adom.LaserEtch` group (Fusion-ready); `tmi3342.step` / `tmi3342.glb` are the bare package body.
## Provenance
Data extracted from the manufacturer datasheet, not a distributor listing:
- **Datasheet:** [TMI datasheet](https://jlcpcb.com/api/file/downloadByFileSystemAccessId/8589041914124881920) (12 pp, sha256 `b7d7ae5bf264d971`, retrieved 2026-10-18, 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/tmi3342-datasheet.pdf)