component
TMI32561
Public Made by Adomby adom
TMI 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
markdownTMI32561
TMI · DC-DC Converters · ESOP-8
TMI32561 from TMI, 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 | EN | input | Drive to logic-high to enable the IC and to logic-low to disable it into micro-power shutdown mode; do not leave EN floating. |
| 2 | FB | input | Output voltage feedback input that connects to the center point of the external resistor divider, regulated to a 0.765 V reference. |
| 3 | NC | unconnected | No connection. |
| 4 | NC | unconnected | No connection. |
| 5 | GND | power_in | Ground pin. |
| 6 | LX | output | Switching pin; LX voltage is rated -0.3 V to 20 V, or -4.5 V to 22 V for transients under 10 ns. |
| 7 | BS | passive | Bootstrap pin; a capacitor between LX and BS is required to form the floating supply for the high-side switch driver. |
| 8 | IN | power_in | Power supply pin; input voltage range is 4.5 V to 18 V. |
| 9 | GND | power_in | Ground and exposed pad; it should be connected to GND. |
Key specifications
| Parameter | Value |
|---|---|
| Manufacturer | TMI |
| 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 |
|---|---|---|---|---|---|---|---|
| Feedback Voltage Accuracy | -1.5 | 1.5 | % | Feature list: 0.765V ±1.5% | 1 | ||
| Input Voltage Range (IN) | IN | 4.5 | 18 | V | 3 | ||
| Junction Temperature (operating) | TJ | -40 | 125 | °C | 3 | ||
| Input Supply Voltage, EN | -0.3 | 20 | V | 2 | |||
| LX Voltages | -0.3 | 20 | V | 2 | |||
| LX Voltages (<10ns transient) | -4.5 | 22 | V | <10ns transient | 2 | ||
| FB Voltage | -0.3 | 6 | V | 2 | |||
| BS Voltage | -0.3 | 23 | V | 2 | |||
| Storage Temperature Range | -65 | 150 | °C | 2 | |||
| Junction Temperature | 160 | °C | 2 | ||||
| Power Dissipation | 1500 | mW | 2 | ||||
| Lead Temperature (Soldering) | 260 | °C | Soldering, 10s | 2 | |||
| ESD Human Body Model (all pins) | VESD_HBM | -2000 | 2000 | V | JEDEC JS-001 | 3 | |
| ESD Charged Device Model (all pins) | VESD_CDM | -1000 | 1000 | V | JEDEC JS-001 | 3 | |
| OVP Threshold | 18 | 19 | 20 | V | 4 | ||
| Quiescent Current | 340 | 600 | μA | VEN=2V, VFB=VREF x 105% | 4 | ||
| Shutdown Current | 5 | 15 | μA | VIN=12V, EN=0V | 4 | ||
| Regulated Feedback Voltage | VREF | 0.753 | 0.765 | 0.776 | V | TA=25°C | 4 |
| High-Side Switch Leakage Current | 1 | 10 | μA | VEN=0V, VLX=0V | 4 | ||
| On Time | 132 | 166 | 200 | ns | VIN=12V, VOUT=1.2V, IOUT=1A | 4 | |
| Oscillation Frequency | 450 | 600 | 750 | kHz | 4 | ||
| Minimum On-Time | 70 | 80 | 100 | ns | 4 | ||
| Soft Start Time | 0.7 | 1 | 1.3 | ms | 4 | ||
| EN Rising Threshold | 0.95 | 1.1 | 1.25 | V | 4 | ||
| EN Input Leakage Current | -1 | 1 | μA | VEN=2V | 4 | ||
| Junction-to-ambient thermal resistance | θJA | 25 | °C/W | Note 3: measured on JESD51-7, 4-layer PCB | 3 | ||
| Junction-to-case (top) thermal resistance | θJC | 5 | °C/W | Note 3: measured on JESD51-7, 4-layer PCB | 3 |
CAD (KiCad official)
- Symbol:
TMI32561 - Footprint:
Package_SO:SOIC-8-1EP_3.9x4.9mm_P1.27mm_EP2.41x3.3mm - 3D model: ESOP-8 (KiCad packages3D, STEP)
- 3D model files:
tmi32561-etched.step/tmi32561-etched.glbcarry the MPN laser-etched on the die in a toggleableAdom.LaserEtchgroup (Fusion-ready);tmi32561.step/tmi32561.glbare the bare package body.
Provenance
Data extracted from the manufacturer datasheet, not a distributor listing:
- Datasheet: TMI datasheet (14 pp, sha256
d5a2dba9e7a43cfc, retrieved 2026-10-17, 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).