LM1117IDTX-3.3

IC REG LDO 3.3V 800MA SOT-223

LM1117IDTX-3.3 is an 800 mA low-dropout linear regulator with a fixed 3.3 V output, WSON-8 package, operating temperature -40°C to 125°C, featuring current limiting and thermal protection.Checked against the datasheet

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Technical parameters

Key specs

Output voltage3.267 ~ 3.333 VMax: 3.333 V (IOUT = 10 mA，VIN = 5 V，TJ = 25°C)，Max: 3.365 V (0 ≤ IOUT ≤ 800 mA，4.75 V ≤ VIN ≤ 10 V

Output current800 mAMax

Input voltage≤ 15 V

Dropout voltage1.2 VMax

Datasheet-verified parameters

17 items

Parameter	Value and test conditions	Source
Output voltage	Min: 3.267 V, Typ: 3.3 V, Max: 3.333 V (IOUT = 10 mA, VIN = 5 V, TJ = 25°C); Min: 3.235 V, Max: 3.365 V (0 ≤ IOUT ≤ 800 mA, 4.75 V ≤ VIN ≤ 10 V, over junction temperature range 0°C to 125°C)
Output current	800 mA
Input voltage range	Max: 15 V (Recommended Operating Conditions); Max: 20 V (Absolute Maximum Ratings)
Dropout voltage	1.2 V at 800 mA of load current
Package	WSON (NGN), 8-Pin, 4.00 mm × 4.00 mm
Operating temperature	-40°C to 125°C (LM1117I)
Grade	Industrial (LM1117I)
Line regulation	Typ: 1 mV (IOUT = 0 mA, 4.75 V ≤ VIN ≤ 15 V, TJ = 25°C); Max: 6 mV (over junction temperature range 0°C to 125°C)
Load regulation	Typ: 1 mV (VIN = 4.75 V, 0 ≤ IOUT ≤ 800 mA, TJ = 25°C); Max: 10 mV (over junction temperature range 0°C to 125°C)
PSRR	75 dB (120 Hz)
Maximum input voltage	Max: 20 V (VIN to GND)
Junction temperature	Max: 150°C (Absolute Maximum); Recommended: -40°C to 125°C (LM1117I)
Storage temperature	Min: -65°C, Max: 150°C
ESD	±2000 V (Human-body model, HBM)
Protection features	Current limiting and thermal shutdown
Reference voltage	Typ: 1.25 V (IOUT = 10 mA, VIN-VOUT = 2 V, TJ = 25°C)
Thermal resistance	39.3 °C/W (WSON-8, TJA)

All parameters (6)ExpandCollapse

Power
Dropout voltage	1.2 V (Typ)
Input voltage (VIN to GND)	15 V (Max)
Output current	800 mA
Output voltage	3.3 V (Typ)
Environment and package
Junction temperature (TJ)	-40 °C to 125 °C
Package	SOT-223

Pinout and package

PackageWSON (NGN), 8-Pin, 4.00 mm × 4.00 mm

Pin	Name	Function	Source
1		ADJ/GND: Adjust pin for adjustable output option. Ground pin for fixed output option.
2, 3, 4		VIN: Input voltage pin for the regulator.
5, 6, 7, TAB		VOUT: Output voltage pin for the regulator.

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DatasheetDatasheet · 2.8 MB · 2026-10-29

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