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Contents

Pinout
Key specifications
Electrical characteristics
Materials and finish
CAD (KiCad official)
Provenance

README

markdown

D2577SAD

Silicore · DC-DC Converters · TO-263-5

D2577SAD from Silicore, in a TO-263-5. 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	Comp	passive	Compensation pin at the error amplifier output, where the RC/CC compensation network connects; CC of at least 0.22 µF is also required for the soft-start circuit.
2	Feedback	input	Feedback input to the error amplifier, compared with the 1.230V reference on the ADJ version (VOUT = 1.23V(1+R1/R2)) and tied directly to the output on the 12V and 15V versions.
3	Ground	power_in	Ground pin, and the package tab is also connected to ground.
4	Switch	output	Collector of the internal 3.0A NPN output switch, which can stand off 65V (absolute maximum), recommended 0 to 60V.
5	VIN	power_in	Supply input, recommended 3.5V to 40V (absolute maximum 45V), which should be bypassed close to the VIN and Ground pins.
6	EP	passive	Exposed pad (from the footprint; not named in the datasheet pin table).

Key specifications

Parameter	Value
Manufacturer	Silicore
Package	TO-263-5
Category	Power Supply Chip
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
Supply voltage				45	V		2
Output switch voltage				65	V		2
Output switch current				6	A		2
Storage temperature range		-65		150	℃		2
Lead temperature				260	℃	soldering, 10 sec.	2
Maximum junction temperature				150	℃		2
Minimum ESD rating		2			kV	C=100pF, R=1.5kΩ	2
Supply voltage		3.5		40	V		2
Output switch voltage		0		60	V		2
Output switch current				3	A		2
Junction temperature range		-40		125	℃		2
Thermal resistance, junction to ambient (TO-263)	θJA		37		°C/W	TO-263, junction to ambient; 1 sq in copper area (footnote *7)	6
Oscillator frequency	fO	42	52	62	kHz	Measured at switch pin, ISWITCH=100mA	3
Input supply undervoltage lockout	VUV	2.65	2.9	3.15	V	ISWITCH=100mA	3

Materials and finish

As the datasheet states them (page.json metadata.appearance; the 3D model's colours follow it).

Part	Material	Colour / plating	Datasheet says	Page
contacts	copper		accuracy in measuring AVOL. In actual applications, this pin’s load resistance should be ≥10 MΩ, resulting in AVOL that is typically twice the guaranteed minimum limit. *7: If the TO-263 package is us	7

CAD (KiCad official)

Symbol: D2577SAD
Footprint: Package_TO_SOT_SMD:TO-263-5_TabPin6
3D model: TO-263-5 (KiCad packages3D, STEP)
3D model files: d2577sad-etched.step / d2577sad-etched.glb carry the MPN laser-etched on the die in a toggleable Adom.LaserEtch group (Fusion-ready); d2577sad.step / d2577sad.glb are the bare package body.

Provenance

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

Datasheet: Silicore datasheet (28 pp, sha256 7b07b696027306d4, retrieved 2026-10-20, tier: lcsc)
Extractor: parts-factory 2.0.0 / extract_pins 0.3, primary claude-sonnet-5-5 (text+vision), consensus claude-opus-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