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Contents

Pinout
Key specifications
Electrical characteristics
CAD (KiCad official)
Provenance

README

markdown

TC7660EOA

Microchip Tech · DC-DC Converters · SOIC-8

TC7660EOA 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	NC	unconnected	No connection.
2	CAP+	passive	Positive terminal of the charge pump (flying) capacitor, used to transfer charge from the input source to the output; a low-ESR capacitor is recommended.
3	GND	power_in	Ground terminal, the input and output zero volt reference.
4	CAP-	passive	Negative terminal of the charge pump (flying) capacitor; correct orientation is imperative when using a polarized capacitor.
5	VOUT	power_out	Negative output voltage, connected to the negative terminal of the output capacitor; a low-ESR capacitor is recommended, and larger values lower the output ripple.
6	LV	input	Low voltage pin that ensures proper internal oscillator operation below 3.5V; connect to GND for V+ below 3.5V, otherwise leave floating.
7	OSC	input	Oscillator control input; bypass with an external capacitor to ground to slow the oscillator (nominal 10 kHz), or overdrive it to speed it up.
8	V+	power_in	Positive power supply input, 1.5V to 10V operating range; bypass to GND with a low-ESR capacitor.

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	180	µA	V+ = 5V, RL = ∞, over operating temperature range	2
Supply Voltage Range, High	V+H	3		10	V	Min TA to Max, RL = 10 kΩ, LV Open	2
Supply Voltage Range, Low	V+L	1.5		3.5	V	Min TA to Max, RL = 10 kΩ, LV to GND	2
Output Source Resistance	ROUT		70	100	Ω	IOUT = 20 mA, TA = +25°C	2
Output Source Resistance (E and I Device)	ROUT			130	Ω	IOUT = 20 mA, TA ≤ +85°C (E and I Device)	2
Power Efficiency	PEFF	95	98		%	RL = 5 kΩ	2
Voltage Conversion Efficiency	VOUTEFF	97	99.9		%	RL = ∞	2
Oscillator Frequency	fOSC		10		kHz	Pin 7 open	2
Oscillator Impedance	ZOSC		1		MΩ	V+ = 2V	2
Oscillator Impedance	ZOSC		100		kΩ	V+ = 5V	2
Supply Voltage	V+			10.5	V		2
Current into LV				20	µA	V+ > 3.5V	2
Operating Temperature Range, E Suffix		-40		85	°C	E Suffix	2
Storage Temperature Range		-65		160	°C		2
ESD protection on all pins (HBM)				3	kV	HBM	2
Maximum Junction Temperature	TJ			150	°C		2

CAD (KiCad official)

Symbol: TC7660EOA
Footprint: Package_SO:SOIC-8_3.9x4.9mm_P1.27mm
3D model: SOIC-8 (KiCad packages3D, STEP)
3D model files: tc7660eoa-etched.step / tc7660eoa-etched.glb carry the MPN laser-etched on the die in a toggleable Adom.LaserEtch group (Fusion-ready); tc7660eoa.step / tc7660eoa.glb are the bare package body.

Provenance

Data extracted from the manufacturer datasheet, not a distributor listing:

Datasheet: Microchip Tech datasheet (20 pp, sha256 6002a8cdc2b164f1, retrieved 2026-10-23, 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