Ultralow Dropout LDOs

STMicroelectronics Ultra Low Dropout LDOs are a wide range of low and medium-power LDO regulators with ultralow dropout and fast transient response. These ultralow LDOs simplify the design of high-efficiency, cost-effective linear power management (from 50mA to 3A of continuous load current). This makes them ideal for DSPs, MCUs, and FPGAs.

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Description Datasheet Availability Pricing (USD) Filter the results in the table by unit price based on your quantity.
Qty. RoHS ECAD Model Mounting Style
Package/Case
Output Voltage
Output Current
Number of Outputs
Polarity
Quiescent Current
Input Voltage - Min
Input Voltage - Max
PSRR / Ripple Rejection - Typ
Output Type
Minimum Operating Temperature
Maximum Operating Temperature
Dropout Voltage
Qualification
Series
Packaging
STMicroelectronics LDO Voltage Regulators 200 mA low quiescent current and high PSRR voltage regulator
Datasheet
13,759In Stock
MouseReel Available
Min.: 1
Mult.: 1
Reel: 3,000

SMD/SMT SOT-23-5 5 V 200 mA 1 Output Positive 70 uA 2.5 V 18 V 48 dB Fixed - 40 C + 125 C 200 mV LDK320 Reel, Cut Tape, MouseReel

STMicroelectronics LDO Voltage Regulators 1.2A Low Drop Linear Regulator IC
Datasheet
46,333In Stock
MouseReel Available
Min.: 1
Mult.: 1
Reel: 2,500

SMD/SMT SOIC-8 Adjustable 1.2 A 1 Output Positive 250 uA 2.5 V 18 V Adjustable - 40 C + 125 C 350 mV LDL212 Reel, Cut Tape, MouseReel
STMicroelectronics LDO Voltage Regulators 1.2A Low Drop Linear Regulator IC
Datasheet
62,766In Stock
MouseReel Available
Min.: 1
Mult.: 1
Reel: 3,000

SMD/SMT DFN-6 Adjustable 1.2 A 1 Output Positive 380 uA 2.5 V 18 V 87 dB, 75 dB Adjustable - 40 C + 125 C 350 mV LDL212 Reel, Cut Tape, MouseReel
STMicroelectronics LDO Voltage Regulators 1.2A Low Drop Linear Regulator IC
Datasheet
13,241In Stock
MouseReel Available
Min.: 1
Mult.: 1
Reel: 3,000

SMD/SMT DFN-6 Adjustable 1.2 A 1 Output Positive 250 uA 2.5 V 18 V 50 dB Adjustable - 40 C + 125 C 350 mV LDL212 Reel, Cut Tape, MouseReel
STMicroelectronics LDO Voltage Regulators 400 mA, 38 V low-dropout regulator, with 45uAA quiescent current
Datasheet
5,995In Stock
MouseReel Available
Min.: 1
Mult.: 1
Reel: 3,000

SMD/SMT DFN-6 3.3 V 400 mA 1 Output Positive 45 uA 3.5 V 38 V 77 dB Fixed - 40 C + 125 C 140 mV AEC-Q100 LDO40L Reel, Cut Tape, MouseReel
STMicroelectronics LDO Voltage Regulators 400 mA, 38 V low-dropout regulator, with 45uAA quiescent current
Datasheet
9,371In Stock
MouseReel Available
Min.: 1
Mult.: 1
Reel: 3,000

SMD/SMT DFN-6 Adjustable 400 mA 1 Output Positive 45 uA 3.5 V 38 V 70 dB Adjustable - 40 C + 125 C 140 mV AEC-Q100 LDO40L Reel, Cut Tape, MouseReel
STMicroelectronics LDO Voltage Regulators 800 mA ultra low drop, high PSRR voltage regulator
Datasheet
4,559In Stock
MouseReel Available
Min.: 1
Mult.: 1
Reel: 2,500

SMD/SMT DFN-8 Adjustable 800 mA 1 Output Positive 150 uA 1 V 5.5 V Adjustable - 40 C + 125 C 70 mV ST1L08 Reel, Cut Tape, MouseReel
STMicroelectronics LDO Voltage Regulators 800 mA ultra low drop, high PSRR voltage regulator
Datasheet
3,750In Stock
MouseReel Available
Min.: 1
Mult.: 1
Reel: 2,500

SMD/SMT DFN-8 3.3 V 800 mA 1 Output Positive 150 uA 1 V 5.5 V 30 dB Fixed - 40 C + 125 C 100 mV ST1L08 Reel, Cut Tape, MouseReel

STMicroelectronics LDO Voltage Regulators 800 mA ultra low drop, high PSRR voltage regulator
Datasheet
8,182In Stock
MouseReel Available
Min.: 1
Mult.: 1
Reel: 2,500

SMD/SMT DFN-8 Adjustable 800 mA 1 Output Positive 150 uA 1 V 5.5 V 80 dB Adjustable - 40 C + 125 C 70 mV ST1L08 Reel, Cut Tape, MouseReel

STMicroelectronics LDO Voltage Regulators 150 mA - ultra low quiescent current linear voltage regulator
Datasheet
7,485In Stock
MouseReel Available
Min.: 1
Mult.: 1
Reel: 3,000

SMD/SMT SOT-23-5 1.8 V 150 mA 1 Output Positive 1.4 uA 1.5 V 5.5 V Fixed - 40 C + 125 C 112 mV STLQ015 Reel, Cut Tape, MouseReel

STMicroelectronics LDO Voltage Regulators 150 mA - ultra low quiescent current linear voltage regulator
Datasheet
9,836In Stock
MouseReel Available
Min.: 1
Mult.: 1
Reel: 3,000

SMD/SMT SOT-23-5 2.1 V 150 mA 1 Output Positive 1.4 uA 1.55 V 5.5 V Fixed - 40 C + 125 C 112 mV STLQ015 Reel, Cut Tape, MouseReel

STMicroelectronics LDO Voltage Regulators 5.0V 0.25A Positive
Datasheet
1,934In Stock
2,500Expected 04/03/2026
MouseReel Available
Min.: 1
Mult.: 1
Reel: 2,500

SMD/SMT SOIC-8 5 V 250 mA 1 Output Positive 1 mA 2.5 V 20 V Fixed - 40 C + 125 C 400 mV L4931 Reel, Cut Tape, MouseReel

STMicroelectronics LDO Voltage Regulators 1.5A Regulator Lo Drop
Datasheet
923In Stock
MouseReel Available
Min.: 1
Mult.: 1
Reel: 1,000

SMD/SMT D2PAK-3 (TO-263-3) 12 V 1.5 A 1 Output Positive 30 mA 6 V 17 V Fixed - 40 C + 150 C 200 mV L4940 Reel, Cut Tape, MouseReel

STMicroelectronics LDO Voltage Regulators 5.0V 1.5A Positive
Datasheet
1,085In Stock
MouseReel Available
Min.: 1
Mult.: 1
Reel: 1,000

SMD/SMT D2PAK-3 (TO-263-3) 5 V 1.5 A 1 Output Positive 30 mA 6 V 17 V Fixed - 40 C + 150 C 200 mV L4940 Reel, Cut Tape, MouseReel

STMicroelectronics LDO Voltage Regulators 3.3V 50mA Positive
Datasheet
2,513In Stock
6,000Expected 27/04/2026
MouseReel Available
Min.: 1
Mult.: 1
Reel: 3,000

SMD/SMT SOT-23-5 3.3 V 50 mA 1 Output Positive 100 uA 2.5 V 16 V Fixed - 40 C + 125 C 7 mV LD2980 Reel, Cut Tape, MouseReel

STMicroelectronics LDO Voltage Regulators 3.0V 100mA Positive
Datasheet
2,696In Stock
MouseReel Available
Min.: 1
Mult.: 1
Reel: 3,000

SMD/SMT SOT-23-5 3 V 100 mA 1 Output Positive 100 uA 2.5 V 16 V Fixed - 40 C + 125 C 1 mV LD2981 Reel, Cut Tape, MouseReel

STMicroelectronics LDO Voltage Regulators 3.3V 100mA Positive
Datasheet
2,655In Stock
MouseReel Available
Min.: 1
Mult.: 1
Reel: 3,000

SMD/SMT SOT-23-5 3.3 V 100 mA 1 Output Positive 100 uA 2.5 V 16 V Fixed - 40 C + 125 C 1 mV LD2981 Reel, Cut Tape, MouseReel

STMicroelectronics LDO Voltage Regulators 5.0V 100mA Positive
Datasheet
3,791In Stock
MouseReel Available
Min.: 1
Mult.: 1
Reel: 3,000

SMD/SMT SOT-23-5 5 V 100 mA 1 Output Positive 100 uA 2.5 V 16 V Fixed - 40 C + 125 C 1 mV LD2981 Reel, Cut Tape, MouseReel

STMicroelectronics LDO Voltage Regulators 3.3V 100mA Positive
Datasheet
2,863In Stock
3,000Expected 27/04/2026
MouseReel Available
Min.: 1
Mult.: 1
Reel: 3,000

SMD/SMT SOT-23-5 3.3 V 100 mA 1 Output Positive 100 uA 2.5 V 16 V Fixed - 40 C + 125 C 1 mV LD2981 Reel, Cut Tape, MouseReel

STMicroelectronics LDO Voltage Regulators 3.3V 100mA Positive
Datasheet
1,344In Stock
5,000Expected 22/04/2026
MouseReel Available
Min.: 1
Mult.: 1
Reel: 2,500

SMD/SMT SOT-89-3 3.3 V 100 mA 1 Output Positive 100 uA 2.5 V 16 V Fixed - 40 C + 125 C 1 mV LD2981 Reel, Cut Tape, MouseReel

STMicroelectronics LDO Voltage Regulators 5.0V 100mA Positive
Datasheet
3,835In Stock
5,000Expected 10/02/2026
MouseReel Available
Min.: 1
Mult.: 1
Reel: 2,500

SMD/SMT SOT-89-3 5 V 100 mA 1 Output Positive 100 uA 2.5 V 16 V Fixed - 40 C + 125 C 1 mV LD2981 Reel, Cut Tape, MouseReel
STMicroelectronics LDO Voltage Regulators Bicmos Vltg Regulatr Ultra Lo Drop
Datasheet
1,404In Stock
2,500Expected 09/03/2026
MouseReel Available
Min.: 1
Mult.: 1
Reel: 2,500

SMD/SMT TO-252-5 1.22 V to 5 V 1.5 A 1 Output Positive 2.5 mA 2.5 V 6 V Adjustable - 40 C + 125 C 40 mV LD39150 Reel, Cut Tape, MouseReel

STMicroelectronics LDO Voltage Regulators 1.8V 0.15A Ultra Low
Datasheet
2,544In Stock
MouseReel Available
Min.: 1
Mult.: 1
Reel: 3,000

SMD/SMT SOT-23-5 1.8 V 150 mA 1 Output Positive 150 uA 2.5 V 6 V Fixed - 40 C + 125 C 400 uV LD3985 Reel, Cut Tape, MouseReel

STMicroelectronics LDO Voltage Regulators 2.5V 0.15A Ultra Low
Datasheet
3,057In Stock
MouseReel Available
Min.: 1
Mult.: 1
Reel: 3,000

SMD/SMT SOT-23-5 2.5 V 150 mA 1 Output Positive 150 uA 2.5 V 6 V Fixed - 40 C + 125 C 400 uV LD3985 Reel, Cut Tape, MouseReel

STMicroelectronics LDO Voltage Regulators Bicmos Vltg Regulatr Ultra Lo Drop Lo
Datasheet
2,436In Stock
MouseReel Available
Min.: 1
Mult.: 1
Reel: 3,000

SMD/SMT SOT-23-5 2.8 V 150 mA 1 Output Positive 150 uA 2.5 V 6 V Fixed - 40 C + 125 C 400 uV LD3985 Reel, Cut Tape, MouseReel