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 (SGD) 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 2 A high PSRR ultra low drop linear regulator with reverse current protection
Datasheet
441,644In Stock
MouseReel Available
Min.: 1
Mult.: 1
Reel: 4,500

SMD/SMT DFN-8 Adjustable 2 A 1 Output Positive 1 mA 1.25 V 6 V 40 dB Adjustable - 40 C + 125 C 130 mV LD39200 Reel, Cut Tape, MouseReel
STMicroelectronics LDO Voltage Regulators 1A Low Quiescent Reg 1.5 to 5.5 V 200mV
Datasheet
83,041In Stock
MouseReel Available
Min.: 1
Mult.: 1
Reel: 3,000

SMD/SMT DFN-6 800 mV to 4.5 V 1 A 1 Output Positive 200 uA 1.5 V 5.5 V Adjustable - 40 C + 125 C 200 mV LD39100 Reel, Cut Tape, MouseReel
STMicroelectronics LDO Voltage Regulators 2 A high PSRR ultra low drop linear regulator with reverse current protection
Datasheet
53,727In Stock
5Expected 12/2/2026
MouseReel Available
Min.: 1
Mult.: 1
Reel: 3,000

SMD/SMT DFN-6 3.3 V 2 A 1 Output Positive 1 mA 1.25 V 6 V 40 dB Fixed - 40 C + 125 C 130 mV LD39200 Reel, Cut Tape, MouseReel
STMicroelectronics LDO Voltage Regulators 1.5 A Low Dropout Linear Regulator with Programmable Soft-Start
Datasheet
40,859In Stock
MouseReel Available
Min.: 1
Mult.: 1
Reel: 4,000

SMD/SMT DFN-10 800 mV to 3.6 V 1.5 A 1 Output Positive 800 mV 5.5 V 70 dB Adjustable - 40 C + 125 C 65 mV AEC-Q100 LD59150 Reel, Cut Tape, MouseReel
STMicroelectronics LDO Voltage Regulators 2 A high PSRR ultra low drop linear regulator with reverse current protection
Datasheet
213,683In Stock
MouseReel Available
Min.: 1
Mult.: 1
Reel: 3,000

SMD/SMT DFN-6 Adjustable 2 A 1 Output Positive 1 mA 1.25 V 6 V 40 dB Adjustable - 40 C + 125 C 130 mV LD39200 Reel, Cut Tape, MouseReel
STMicroelectronics LDO Voltage Regulators 200 mA low quiescent current and high PSRR voltage regulator
Datasheet
206,751In 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 5.0V 0.25A Positive
Datasheet
13,417In Stock
MouseReel Available
Min.: 1
Mult.: 1
Reel: 2,500

SMD/SMT SOIC-8 5 V 250 mA 1 Output Positive 600 uA 4 V 20 V Fixed - 40 C + 125 C 400 mV L4931 Reel, Cut Tape, MouseReel

STMicroelectronics LDO Voltage Regulators 3.0V 50mA Positive
Datasheet
12,960In Stock
MouseReel Available
Min.: 1
Mult.: 1
Reel: 3,000

SMD/SMT SOT-23-5 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 BICMOS 300mA V Reg Ultra Lo Drop Lo
Datasheet
4,720In Stock
MouseReel Available
Min.: 1
Mult.: 1
Reel: 3,000

SMD/SMT TSOT-23-5 1.8 V 300 mA 1 Output Positive 150 uA 2.5 V 6 V Fixed - 40 C + 125 C 400 uV LDS3985 Reel, Cut Tape, MouseReel

STMicroelectronics LDO Voltage Regulators Bicmos Vltg Regulatr Ultra Lo Drop
Datasheet
11,334In Stock
MouseReel Available
Min.: 1
Mult.: 1
Reel: 2,500

SMD/SMT TO-252-3 2.5 V 1.5 A 1 Output Positive 2.5 mA 2.5 V 6 V Fixed - 40 C + 125 C 40 mV LD39150 Reel, Cut Tape, MouseReel

STMicroelectronics LDO Voltage Regulators LOW NOISE REGULATOR
Datasheet
8,509In Stock
MouseReel Available
Min.: 1
Mult.: 1
Reel: 3,000

SMD/SMT SOT-23-5 2.7 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 3.3V 0.25A Positive
Datasheet
4,051In Stock
MouseReel Available
Min.: 1
Mult.: 1
Reel: 2,500

SMD/SMT TO-252-3 3.3 V 250 mA 1 Output Positive 600 uA 4 V 20 V Fixed - 40 C + 125 C 400 mV L4931 Reel, Cut Tape, MouseReel

STMicroelectronics LDO Voltage Regulators 3.3V 200mA Linear
Datasheet
7,263In Stock
MouseReel Available
Min.: 1
Mult.: 1
Reel: 3,000

SMD/SMT SOT-23-5 3.3 V 150 mA 1 Output Positive 250 uA 3.8 V 14 V Fixed - 40 C + 125 C 170 mV LK112S Reel, Cut Tape, MouseReel

STMicroelectronics LDO Voltage Regulators 5V 100mA Linear
Datasheet
7,677In Stock
MouseReel Available
Min.: 1
Mult.: 1
Reel: 3,000

SMD/SMT SOT-23-5 5 V 150 mA 1 Output Positive 250 uA 5.5 V 14 V Fixed - 40 C + 125 C 170 mV LK112S Reel, Cut Tape, MouseReel

STMicroelectronics LDO Voltage Regulators 5.0V 100mA Positive
Datasheet
10,005In Stock
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 5.0V 0.25A Positive
Datasheet
10,907In Stock
MouseReel Available
Min.: 1
Mult.: 1
Reel: 2,500

SMD/SMT TO-252-3 5 V 250 mA 1 Output Positive 600 uA 4 V 20 V Fixed - 40 C + 125 C 400 mV L4931 Reel, Cut Tape, MouseReel

STMicroelectronics LDO Voltage Regulators 5.0V 1.0A Positive
Datasheet
7,304In Stock
MouseReel Available
Min.: 1
Mult.: 1
Reel: 2,500

SMD/SMT TO-252-3 5 V 1 A 1 Output Positive 20 mA 6 V 16 V Fixed - 40 C + 150 C 250 mV L4941 Reel, Cut Tape, MouseReel
STMicroelectronics LDO Voltage Regulators 200 mA low quiescent current and high PSRR voltage regulator
Datasheet
61,072In Stock
MouseReel Available
Min.: 1
Mult.: 1
Reel: 3,000

SMD/SMT SOT-23-5 Adjustable 200 mA 1 Output Positive 70 uA 2.5 V 18 V 58 dB Adjustable - 40 C + 125 C 100 mV LDK320 Reel, Cut Tape, MouseReel
STMicroelectronics LDO Voltage Regulators 300 mA very low dropout linear regulator IC
Datasheet
13,155In Stock
MouseReel Available
Min.: 1
Mult.: 1
Reel: 5,000

SMD/SMT DFN-4 1.2 V 300 mA 1 Output Positive 305 uA 1.5 V 5.5 V 75 dB Fixed - 40 C + 125 C 155 mV LD59030 Reel, Cut Tape, MouseReel

STMicroelectronics LDO Voltage Regulators 150 mA - ultra low quiescent current linear voltage regulator
Datasheet
71,316In Stock
MouseReel Available
Min.: 1
Mult.: 1
Reel: 3,000

SMD/SMT SOT-23-5 3.3 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 300mA current Linear Reg IC
Datasheet
18,351In Stock
MouseReel Available
Min.: 1
Mult.: 1
Reel: 5,000

SMD/SMT FlipChip-4 1.8 V 300 mA 1 Output Positive 45 uA 1.4 V 5.5 V 70 dB Fixed - 40 C + 125 C 300 mV LD39130S Reel, Cut Tape, MouseReel
STMicroelectronics LDO Voltage Regulators 1A Ultra Low-Dropout regulator with Reverse Current Protection
Datasheet
10,128In Stock
MouseReel Available
Min.: 1
Mult.: 1
Reel: 3,000

SMD/SMT DFN-8 Adjustable 1 A 1 Output Positive 280 uA 2.2 V 5.5 V 70 dB Adjustable - 40 C + 125 C 200 mV LD59100 Reel, Cut Tape, MouseReel

STMicroelectronics LDO Voltage Regulators 300mA current very low noise LDO
Datasheet
14,885In Stock
MouseReel Available
Min.: 1
Mult.: 1
Reel: 3,000

SMD/SMT SOT-23-5 800 mV 300 mA 1 Output Positive 30 uA 1.9 V 5.5 V 55 dB Fixed - 40 C + 125 C 100 mV AEC-Q100 LDK130 Reel, Cut Tape, MouseReel
STMicroelectronics LDO Voltage Regulators 1 A low quiescent current low noise voltage regulator
Datasheet
24,156In Stock
MouseReel Available
Min.: 1
Mult.: 1
Reel: 3,000

SMD/SMT DFN-6 Adjustable 1 A 1 Output Positive 200 uA 1.5 V 5.5 V Adjustable - 40 C + 125 C 200 mV AEC-Q100 LD39100 Reel, Cut Tape, MouseReel
STMicroelectronics LDO Voltage Regulators 1.2 A low quiescent current LDO with reverse current protection
Datasheet
10,011In Stock
MouseReel Available
Min.: 1
Mult.: 1
Reel: 3,000

SMD/SMT DFN-6 Adjustable 1.2 A 1 Output Positive 240 uA 1.6 V 5.5 V 53 dB Adjustable - 40 C + 125 C 350 mV LDL112 Reel, Cut Tape, MouseReel