component
TC1044SCOA
Public Made by Adomby adom
Microchip Tech DC-DC Converters, SOIC-8. Pinout cross-checked by two models against the datasheet, KiCad symbol/footprint/3D.
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TC1044SCOA
Microchip Tech · DC-DC Converters · SOIC-8
TC1044SCOA from Microchip Tech, in a SOIC-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 | BOOST | input | Frequency boost pin; connecting it to V+ raises the oscillator frequency from 10kHz to 45kHz, and it is left open (or GND) for the nominal 10kHz. |
| 2 | CAP+ | passive | Charge pump capacitor positive terminal; the + terminal of polarized C1 connects here. |
| 3 | GND | power_in | Ground; the + terminal of reservoir capacitor C2 connects to GND and LV is tied here only for supplies below 3.5V. |
| 4 | CAP- | passive | Charge pump capacitor negative terminal, connected to the negative side of pump capacitor C1. |
| 5 | VOUT | power_out | Negative voltage output (-V+ for 1.5V to 12V input), with the reservoir capacitor C2 connected to it. |
| 6 | LV | input | Low voltage pin; connect to GND for supplies below 3.5V to disable the internal regulator, and leave open for supplies above 3.5V. |
| 7 | OSC | input | Oscillator pin; an external capacitor to ground (with pin 1 open) lowers the frequency below 10kHz, or it can be driven by an external clock through a 1kΩ resistor. |
| 8 | V+ | power_in | Positive supply input, 1.5V to 12V operating range with an absolute maximum of +13V. |
Key specifications
| Parameter | Value |
|---|---|
| Manufacturer | Microchip Tech |
| Package | SOIC-8 |
| Category | Power Supply Chip |
| Pins | 8 |
Electrical characteristics
Limits as printed in the datasheet (page.json metadata.characteristics carries them as data).
| Parameter | Symbol | Min | Typ | Max | Unit | Conditions | Page |
|---|---|---|---|---|---|---|---|
| Supply Current | I+ | 80 | 160 | µA | TA=+25°C, V+=5V, RL=∞ | 2 | |
| Supply Current | I+ | 180 | µA | 0°C < TA < +70°C, RL=∞ | 2 | ||
| Supply Current (Boost Pin = V+) | I+ | 300 | µA | 0°C < TA < +70°C, Boost Pin = V+ | 2 | ||
| Supply Voltage Range, High | V+H | 3 | 12 | V | Min ≤ TA ≤ Max, RL = 10 kΩ, LV Open | 2 | |
| Supply Voltage Range, Low | V+L | 1.5 | 3.5 | V | Min ≤ TA ≤ Max, RL = 10 kΩ, LV to GND | 2 | |
| Output Source Resistance | ROUT | 60 | 100 | Ω | IOUT = 20mA, TA=+25°C | 2 | |
| Output Source Resistance | ROUT | 70 | 120 | Ω | IOUT = 20mA, 0°C ≤ TA ≤ +70°C | 2 | |
| Output Source Resistance (low voltage) | ROUT | 250 | Ω | V+ = 2V, IOUT = 3 mA, LV to GND, 0°C ≤ TA ≤ +70°C | 2 | ||
| Power Efficiency | PEFF | 96 | 98 | % | RL = 5 kΩ; Boost Pin Open | 2 | |
| Power Efficiency | PEFF | 95 | 97 | % | TMIN < TA < TMAX; Boost Pin Open | 2 | |
| Voltage Conversion Efficiency | VOUT EFF | 99 | 99.9 | % | RL = ∞ | 2 | |
| Oscillator Frequency | FOSC | 10 | kHz | Pin 7 open; Pin 1 open or GND | 2 | ||
| Oscillator Frequency (Boost) | FOSC | 45 | kHz | Boost Pin = V+ | 2 | ||
| Power Efficiency (Boost) | PEFF | 88 | % | Boost Pin = V+ | 2 | ||
| Oscillator Impedance | ZOSC | 1 | MΩ | V+ = 2V | 2 | ||
| Oscillator Impedance | ZOSC | 100 | kΩ | V+ = 5V | 2 | ||
| Supply Voltage | 13 | V | 2 | ||||
| LV, Boost and OSC Input Voltage | -0.3 | 0.3 | V | for V+ < 5.5V; max is (V+ + 0.3V), Note 1 | 2 | ||
| Current Into LV | 20 | µA | V+ > 3.5V, Note 1 | 2 | |||
| Lead Temperature (Soldering, 10 sec) | 300 | °C | 2 | ||||
| Operating Temperature Range (C Suffix) | 0 | 70 | °C | 2 | |||
| Storage Temperature Range | -65 | 150 | °C | 2 |
CAD (KiCad official)
- Symbol:
TC1044SCOA - Footprint:
Package_SO:SOIC-8_3.9x4.9mm_P1.27mm - 3D model: SOIC-8 (KiCad packages3D, STEP)
- 3D model files:
tc1044scoa-etched.step/tc1044scoa-etched.glbcarry the MPN laser-etched on the die in a toggleableAdom.LaserEtchgroup (Fusion-ready);tc1044scoa.step/tc1044scoa.glbare the bare package body.
Provenance
Data extracted from the manufacturer datasheet, not a distributor listing:
- Datasheet: Microchip Tech datasheet (11 pp, sha256
6fde2d62ef18f2a8, retrieved 2026-10-24, tier: manufacturer) - Extractor: parts-factory
2.0.0/extract_pins 0.3, primaryclaude-sonnet-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).
# TC1044SCOA
**Microchip Tech** · DC-DC Converters · SOIC-8
TC1044SCOA from Microchip Tech, in a SOIC-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 | BOOST | input | Frequency boost pin; connecting it to V+ raises the oscillator frequency from 10kHz to 45kHz, and it is left open (or GND) for the nominal 10kHz. |
| 2 | CAP+ | passive | Charge pump capacitor positive terminal; the + terminal of polarized C1 connects here. |
| 3 | GND | power_in | Ground; the + terminal of reservoir capacitor C2 connects to GND and LV is tied here only for supplies below 3.5V. |
| 4 | CAP- | passive | Charge pump capacitor negative terminal, connected to the negative side of pump capacitor C1. |
| 5 | VOUT | power_out | Negative voltage output (-V+ for 1.5V to 12V input), with the reservoir capacitor C2 connected to it. |
| 6 | LV | input | Low voltage pin; connect to GND for supplies below 3.5V to disable the internal regulator, and leave open for supplies above 3.5V. |
| 7 | OSC | input | Oscillator pin; an external capacitor to ground (with pin 1 open) lowers the frequency below 10kHz, or it can be driven by an external clock through a 1kΩ resistor. |
| 8 | V+ | power_in | Positive supply input, 1.5V to 12V operating range with an absolute maximum of +13V. |
## Key specifications
| Parameter | Value |
|---|---|
| Manufacturer | Microchip Tech |
| Package | SOIC-8 |
| Category | Power Supply Chip |
| Pins | 8 |
## Electrical characteristics
Limits as printed in the datasheet (page.json `metadata.characteristics` carries them as data).
| Parameter | Symbol | Min | Typ | Max | Unit | Conditions | Page |
|---|---|---|---|---|---|---|---|
| Supply Current | I+ | | 80 | 160 | µA | TA=+25°C, V+=5V, RL=∞ | 2 |
| Supply Current | I+ | | | 180 | µA | 0°C < TA < +70°C, RL=∞ | 2 |
| Supply Current (Boost Pin = V+) | I+ | | | 300 | µA | 0°C < TA < +70°C, Boost Pin = V+ | 2 |
| Supply Voltage Range, High | V+H | 3 | | 12 | V | Min ≤ TA ≤ Max, RL = 10 kΩ, LV Open | 2 |
| Supply Voltage Range, Low | V+L | 1.5 | | 3.5 | V | Min ≤ TA ≤ Max, RL = 10 kΩ, LV to GND | 2 |
| Output Source Resistance | ROUT | | 60 | 100 | Ω | IOUT = 20mA, TA=+25°C | 2 |
| Output Source Resistance | ROUT | | 70 | 120 | Ω | IOUT = 20mA, 0°C ≤ TA ≤ +70°C | 2 |
| Output Source Resistance (low voltage) | ROUT | | | 250 | Ω | V+ = 2V, IOUT = 3 mA, LV to GND, 0°C ≤ TA ≤ +70°C | 2 |
| Power Efficiency | PEFF | 96 | 98 | | % | RL = 5 kΩ; Boost Pin Open | 2 |
| Power Efficiency | PEFF | 95 | 97 | | % | TMIN < TA < TMAX; Boost Pin Open | 2 |
| Voltage Conversion Efficiency | VOUT EFF | 99 | 99.9 | | % | RL = ∞ | 2 |
| Oscillator Frequency | FOSC | | 10 | | kHz | Pin 7 open; Pin 1 open or GND | 2 |
| Oscillator Frequency (Boost) | FOSC | | 45 | | kHz | Boost Pin = V+ | 2 |
| Power Efficiency (Boost) | PEFF | | 88 | | % | Boost Pin = V+ | 2 |
| Oscillator Impedance | ZOSC | | 1 | | MΩ | V+ = 2V | 2 |
| Oscillator Impedance | ZOSC | | 100 | | kΩ | V+ = 5V | 2 |
| Supply Voltage | | | | 13 | V | | 2 |
| LV, Boost and OSC Input Voltage | | -0.3 | | 0.3 | V | for V+ < 5.5V; max is (V+ + 0.3V), Note 1 | 2 |
| Current Into LV | | | | 20 | µA | V+ > 3.5V, Note 1 | 2 |
| Lead Temperature (Soldering, 10 sec) | | | | 300 | °C | | 2 |
| Operating Temperature Range (C Suffix) | | 0 | | 70 | °C | | 2 |
| Storage Temperature Range | | -65 | | 150 | °C | | 2 |
## CAD (KiCad official)
- Symbol: `TC1044SCOA`
- Footprint: `Package_SO:SOIC-8_3.9x4.9mm_P1.27mm`
- 3D model: SOIC-8 (KiCad packages3D, STEP)
- 3D model files: `tc1044scoa-etched.step` / `tc1044scoa-etched.glb` carry the MPN laser-etched on the die in a toggleable `Adom.LaserEtch` group (Fusion-ready); `tc1044scoa.step` / `tc1044scoa.glb` are the bare package body.
## Provenance
Data extracted from the manufacturer datasheet, not a distributor listing:
- **Datasheet:** [Microchip Tech datasheet](docs/tc1044scoa-datasheet.pdf) (11 pp, sha256 `6fde2d62ef18f2a8`, retrieved 2026-10-24, tier: manufacturer)
- **Extractor:** parts-factory `2.0.0` / `extract_pins 0.3`, primary `claude-sonnet-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/tc1044scoa-datasheet.pdf)