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Generated by kicad-footprint-generator · KiCad file format 20260206

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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.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 (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