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LM1086IS-ADJ

IC REG LDO ADJ 1.5A 3-PIN TO-220

LM1086IS-ADJ is a 1.5-A adjustable positive linear voltage regulator with a maximum input-to-output differential of 29 V, operating temperature range of -40°C to 125°C, in a DDPAK/TO-263 package, featuring current limiting and thermal protection.Checked against the datasheet

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Technical parameters

Key specs

Output current1.5 AMax

Input voltage≥ 29 V

Dropout voltage1.5 VMax · Max 1.5 V (at IOUT=1.5 A，ΔVOUT=1%)

Quiescent current5 mATyp · Max 10.0 mA (VIN ≤ 18 V for fixed versions

Datasheet-verified parameters

20 items

Parameter	Value and test conditions	Source
Output Voltage	Adjustable, Minimum 1.25 V (VOUT = 1.25V (1 + R2/R1))
Output Current	1.5 A
Input Voltage Range	Max Input to Output Voltage Differential: 29 V (LM1086-ADJ)
Dropout Voltage	Typ 1.3 V, Max 1.5 V (at IOUT=1.5 A, ΔVREF, ΔVOUT=1%)
Quiescent Current	Typ 5.0 mA, Max 10.0 mA (VIN ≤ 18 V for fixed versions; ADJ version not explicitly listed in table but implied similar or see Adjust Pin Current)
Package	DDPAK/TO-263 (KTT), 3 Pins
Operating Temperature	-40°C to 125°C
Grade	Industrial (Inferred from -40 to 125°C range, though 'Industrial' label not explicitly in text, standard TI convention for this range)
RoHS	ROHS Exempt
Reference Voltage	Min 1.225 V, Typ 1.250 V, Max 1.270 V (over full temp range, IOUT=10 mA, VIN-VOUT=3 V)
Line Regulation	Typ 0.035%, Max 0.2% (over full temp range, IOUT=10 mA, 1.5 V ≤ VIN-VOUT ≤ 15 V)
Load Regulation	Typ 0.2%, Max 0.4% (over full temp range, VIN-VOUT=3 V, 10 mA ≤ IOUT ≤ IFULL LOAD)
Current Limit	Min 1.50 A, Typ 2.7 A (VIN-VOUT=5 V, 25 V)
Minimum Load Current	Typ 5.0 mA, Max 10.0 mA (VIN-VOUT=25 V)
Ripple Rejection	Min 60 dB, Typ 75 dB (CADJ=25 μF, VIN-VO=3 V)
Adjust Pin Current	Typ 55 μA, Max 120 μA
Absolute Maximum Rating: Input to Output Voltage Differential	Max 29 V (LM1086-ADJ)
Absolute Maximum Rating: Junction Temperature	Max 150 °C
Absolute Maximum Rating: Storage Temperature	Min -65 °C, Max 150 °C
Protection Features	Current Limiting and Thermal Protection

All parameters (8)ExpandCollapse

Power
Dropout Voltage	1.5 V (Max)
Maximum Input to Output Voltage Differential	29 V (Max)
Output Current	1.5 A
Reference Voltage	1.250 V (Typ)
AC and DC characteristics
Line Regulation	0.015% (Typ)
Load Regulation	0.1% (Typ)
Environment and package
Package	TO-220 (3)
Temperature Range	-40°C to 125°C

Pinout and package

Pin	Name	Function	Source
1		ADJ/GND: Adjust pin for the adjustable output voltage version. Ground pin for the fixed output voltage versions.
2		VOUT: Output voltage pin for the regulator.
3		VIN: Input voltage pin for the regulator.
TAB		VOUT: Output voltage pin for the regulator (Tab).

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DatasheetDatasheet · 2.2 MB · 2026-10-29

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