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Contents

Pinout
Key specifications
Electrical characteristics
CAD (KiCad official)
Provenance

README

markdown

SPX1117M3-L-2-5

MaxLinear · Voltage Regulators - Linear, Low Drop Out (LDO) Regulators · SOT-223-3

SPX1117M3-L-2-5 from MaxLinear, in a SOT-223-3. 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	GND	power_in	Ground reference pin for the fixed 2.5V version (labelled ADJ/GND; it is the ADJ pin only on the adjustable version).
2	VOUT	power_out	Regulated 2.5V output (±2% over temperature, 800mA guaranteed), needs at least 2.2µF ceramic/tantalum output capacitor; the tab is also connected to VOUT.
3	VIN	power_in	Unregulated input supply, 20V absolute maximum, with 3.9V to 10V specified for the 2.5V version.

Key specifications

Parameter	Value
Manufacturer	MaxLinear
Package	SOT-223-3
Category	Power Management (PMIC)
Pins	3

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 (2.5V version, over temperature)	VOUT	2.45		2.55	V	5mA≤IOUT≤800mA, 3.9V≤VIN≤10V	2
Output Voltage (2.5V version, TJ=25°C)	VOUT	2.475	2.5	2.525	V	IOUT=5mA, VIN=4.0V, TJ=25°C	2
Reference Voltage (over temperature)	VREF	1.225		1.27	V	5mA≤IOUT≤800mA, 1.4V≤(VIN-VOUT)≤10V	2
Reference Voltage (TJ=25°C)	VREF	1.238	1.25	1.262	V	IOUT=5mA, (VIN, VOUT)=2V, TJ=25°C	2
Line Regulation			3	7	mV	VINMIN≤VIN≤12V, VOUT = Fixed/Adj., IOUT=5mA	2
Load Regulation			6	12	mV	5mA≤IOUT≤800mA, VOUT = Fixed/Adj.	2
Dropout Voltage at 100mA			1	1.2	V	IOUT=100mA	2
Dropout Voltage at 500mA			1.05	1.25	V	IOUT=500mA	2
Dropout Voltage at 800mA			1.1	1.3	V	IOUT=800mA	2
Quiescent Current			5	10	mA	4.25V≤VIN≤6.5V	2
Adjust Pin Current			50	120	µA		2
Current Limit		1	1.5	2	A	(VIN, VOUT)=5V	2
Thermal Regulation			0.01	0.1	%/W	25°C, 30ms pulse	2
Ripple Rejection		60	75		dB	fRIPPLE=120Hz, (VIN, VOUT)=2V, VRIPPLE=1VPP	2
Input Supply Voltage				20	V		2
Operating Junction Temperature Range	TJ	-40		125	°C		2
Storage Temperature		-65		150	°C		2
Lead Temperature (Soldering)				260	°C	Soldering, 5 sec	2
ESD Rating (HBM)				2	kV	HBM - Human Body Model	2
Thermal Resistance, Junction to Tab			15		°C/W	SOT-223 package	6
Thermal Resistance, Tab to Ambient			31		°C/W	SOT-223 package	6
Thermal Resistance, Junction to Ambient			46		°C/W	Table 1, 2500 mm² topside and 2500 mm² backside copper	8

CAD (KiCad official)

Symbol: SPX1117M3-L-2-5
Footprint: Package_TO_SOT_SMD:SOT-223-3_TabPin2
3D model: SOT-223-3 (KiCad packages3D, STEP)
3D model files: spx1117m3-l-2-5-etched.step / spx1117m3-l-2-5-etched.glb carry the MPN laser-etched on the die in a toggleable Adom.LaserEtch group (Fusion-ready); spx1117m3-l-2-5.step / spx1117m3-l-2-5.glb are the bare package body.

Provenance

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

Datasheet: MaxLinear datasheet (11 pp, sha256 0156e5e2a82dff86, retrieved 2026-10-19, 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