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IL2576-3.3D2T-P

IKSEMICON · DC-DC Converters · TO-263-5L

IL2576-3.3D2T-P from IKSEMICON, in a TO-263-5L. 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	Vin	power_in	Unregulated input supply pin, rated for a maximum supply voltage of 45 V (absolute maximum) and an operating supply voltage of 40 V.
2	Output	power_out	Regulated output from the internal power switch, which sources up to 3.0 A with a saturation voltage of 1.8 V (25°C) or 2.0 V (-40 to +125°C) at 3.0 A and must not be driven below -1.0 V steady-state to ground.
3	Ground	power_in	Circuit ground pin that serves as the return reference for the regulator; it is the ground pin the datasheet refers to when describing the buck-boost configuration bootstrap.
4	Feedback	input	Feedback input that senses the output voltage to close the regulation loop; its bias current is at most 100 nA at 25°C and 500 nA over -40 to +125°C, and it sets the output in the adjustable version via Vout = Vref × (1 + R2/R1) with Vref = 1.23 V.
5	ON/OFF	input	TTL-compatible shutdown input where a high level turns the regulator off and a low level turns it on, with an input voltage range of -0.3 V to +Vin and standby quiescent current of at most 200 µA with the pin at 5.0 V.
6	EP	passive	Exposed pad (from the footprint; not named in the datasheet pin table).

Key specifications

Parameter	Value
Manufacturer	IKSEMICON
Package	TO-263-5L
Category	Power Management (PMIC)
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
Output Voltage (IL2576-3.3)	Vout	3.234		3.366	V		3
Output Voltage over line and load, TJ = 25°C	Vout	3.168		3.432	V	6.0 V ≤ Vin ≤ 40 V, 0.5 A ≤ ILoad ≤ 3.0 A, TJ = 25°C	3
Output Voltage over line and load, TJ = -40 to +125°C	Vout	3.135		3.465	V	6.0 V ≤ Vin ≤ 40 V, 0.5 A ≤ ILoad ≤ 3.0 A, TJ = -40 to +125°C	3
Efficiency		65			%	Vin = 12 V, ILoad = 3.0 A	3
Feedback Bias Current	Ib			100	nA	Vout = 5.0 V (Adjustable version only), TJ = 25°C	4
Feedback Bias Current	Ib			500	nA	Vout = 5.0 V (Adjustable version only), TJ = -40 to +125°C	4
Oscillator Frequency	fosc	42		63	kHz	TJ = -40 to +125°C	4
Saturation Voltage	Vsat			1.8	V	Iout = 3.0 A, TJ = 25°C	4
Saturation Voltage	Vsat			2	V	Iout = 3.0 A, TJ = -40 to +125°C	4
Max Duty Cycle (on)	DC	93			%		4
Current Limit (peak current)	ICL	4.2		6.9	A	Peak current, TJ = 25°C	4
Current Limit (peak current)	ICL	3.5		7.5	A	Peak current, TJ = -40 to +125°C	4
Output Leakage Current	IL			2	mA	Output = 0 V, TJ = 25°C	4
Output Leakage Current	IL			30	mA	Output = -1.0 V, TJ = 25°C	4
Quiescent Current	IQ			10	mA	TJ = 25°C	4
Quiescent Current	IQ			11	mA	TJ = -40 to +125°C	4
Standby Quiescent Current	Istby			200	uA	ON/OFF Pin = 5.0 V (off), TJ = 25°C	4
ON/OFF Pin Logic Input Level High	VIH	2.2			V	Vout = 0 V, TJ = 25°C	4
ON/OFF Pin Logic Input Level High	VIH	2.4			V	Vout = 0 V, TJ = -40 to +125°C	4
ON/OFF Pin Logic Input Level Low	VIL			1	V	Vout = nominal output voltage, TJ = 25°C	4
ON/OFF Pin Logic Input Level Low	VIL			0.8	V	Vout = nominal output voltage, TJ = -40 to +125°C	4
ON/OFF Pin Input Current High (off)	IIH			30	uA	ON/OFF Pin = 5.0 V (off), TJ = 25°C	4
ON/OFF Pin Input Current Low (on)	IIL			10	uA	ON/OFF Pin = 0 V (on), TJ = 25°C	4
Maximum Supply Voltage	Vin			45	V		2
ON/OFF Pin Input Voltage		-0.3			V	-0.3 V ≤ V ≤ +Vin	2
Output Voltage to Ground (steady-state)		-1			V	Steady-state	2
Storage Temperature Range	Tstg	-65		150	°C		2
Minimum ESD Rating (Human Body Model)		2			kV	Human Body Model: C = 100 pF, R = 1.5 kΩ	2
Lead Temperature (soldering)				260	°C	Soldering, 10 seconds	2
Maximum Junction Temperature	TJ			150	°C		2
Operating Junction Temperature Range	TJ	-40		125	°C		3
Supply Voltage	Vin			40	V		3
Thermal Resistance, Junction-to-Ambient (TO-263, 5-Lead)	RθJA		70		°C/W	TO-263 (D2PAK), junction-to-ambient	2
Thermal Resistance, Junction-to-Case (TO-263, 5-Lead)	RθJC		5		°C/W	TO-263 (D2PAK), junction-to-case	2

CAD (KiCad official)

Symbol: IL2576-3.3D2T-P
Footprint: Package_TO_SOT_SMD:TO-263-5_TabPin6
3D model: TO-263-5L (KiCad packages3D, STEP)
3D model files: il2576-3-3d2t-p-etched.step / il2576-3-3d2t-p-etched.glb carry the MPN laser-etched on the die in a toggleable Adom.LaserEtch group (Fusion-ready); il2576-3-3d2t-p.step / il2576-3-3d2t-p.glb are the bare package body.

Provenance

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

Datasheet: IKSEMICON datasheet (10 pp, sha256 3613c6556a860980, retrieved 2026-10-18, tier: lcsc)
Extractor: parts-factory 2.0.0 / extract_pins 0.3, primary claude-haiku-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