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 (INR) 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 3.3V 50mA Positive
Datasheet
528In Stock
18,000Expected 31-08-2026
MouseReel Available
Min.: 1
Mult.: 1
: 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 3.3V 100mA Positive
Datasheet
2,717In Stock
3,000Expected 31-08-2026
MouseReel Available
Min.: 1
Mult.: 1
: 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
3,595In Stock
6,000Expected 10-03-2027
MouseReel Available
Min.: 1
Mult.: 1
: 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 5.0V 100mA Positive
Datasheet
3,880In Stock
5,000Expected 28-12-2026
MouseReel Available
Min.: 1
Mult.: 1
: 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 3.0V 100mA Positive
Datasheet
3,377In Stock
MouseReel Available
Min.: 1
Mult.: 1
: 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
494In Stock
33,000On Order
MouseReel Available
Min.: 1
Mult.: 1
: 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
3,368In Stock
9,000Expected 14-12-2026
MouseReel Available
Min.: 1
Mult.: 1
: 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 15mA LO QUIESCENT LO NOISE VLTG REG
Datasheet
539In Stock
MouseReel Available
Min.: 1
Mult.: 1
: 3,000

SMD/SMT SOT-23-5 1.25 V 150 mA 1 Output Positive 50 uA 1.5 V 5.5 V Fixed - 40 C + 125 C 80 mV LD39015 Reel, Cut Tape, MouseReel

STMicroelectronics LDO Voltage Regulators IC Regulator LN 150MA, 1.5V
Datasheet
1,033In Stock
MouseReel Available
Min.: 1
Mult.: 1
: 3,000

SMD/SMT SOT-23-5 1.5 V 150 mA 1 Output Positive 50 uA 1.5 V 5.5 V Fixed - 40 C + 125 C 80 mV LD39015 Reel, Cut Tape, MouseReel
STMicroelectronics LDO Voltage Regulators 3.3V 500mA ULTRA LDO
Datasheet
734In Stock
66,000On Order
MouseReel Available
Min.: 1
Mult.: 1
: 3,000

SMD/SMT DFN-6 3.3 V 500 mA 1 Output Positive 50 uA 1.5 V 5.5 V Fixed - 40 C + 125 C 200 mV LD39050 Reel, Cut Tape, MouseReel
STMicroelectronics LDO Voltage Regulators 1 A low quiescent current low noise voltage regulator
Datasheet
251In Stock
MouseReel Available
Min.: 1
Mult.: 1
: 3,000

SMD/SMT DFN-6 1.8 V 1 A 1 Output Positive 200 uA 1.5 V 5.5 V 62 dB Fixed - 40 C + 125 C 200 mV AEC-Q100 LD39100 Reel, Cut Tape, MouseReel
STMicroelectronics LDO Voltage Regulators 1 A low quiescent current low noise voltage regulator
Datasheet
195In Stock
9,000Expected 04-01-2027
MouseReel Available
Min.: 1
Mult.: 1
: 3,000

SMD/SMT DFN-6 3.3 V 1 A 1 Output Positive 200 uA 1.5 V 5.5 V 62 dB Fixed - 40 C + 125 C 200 mV LD39100 Reel, Cut Tape, MouseReel

STMicroelectronics LDO Voltage Regulators 300 mA very low quiescent current Linear regulator IC with automatic Green mode
Datasheet
3,584In Stock
15,000Expected 16-11-2026
MouseReel Available
Min.: 1
Mult.: 1
: 5,000

SMD/SMT DFN-6 Adjustable 300 mA 1 Output Positive 45 uA 1.4 V 5.5 V 65 dB Adjustable - 40 C + 125 C 300 mV LD39130S Reel, Cut Tape, MouseReel
STMicroelectronics LDO Voltage Regulators 2 A high PSRR ultra low drop linear regulator with reverse current protection
Datasheet
7In Stock
3,36,000On Order
MouseReel Available
Min.: 1
Mult.: 1
: 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 1.8V 0.15A Ultra Low
Datasheet
1,485In Stock
3,000Expected 25-09-2026
MouseReel Available
Min.: 1
Mult.: 1
: 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
2,531In Stock
MouseReel Available
Min.: 1
Mult.: 1
: 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 500 mA ultra-low dropout linear regulator with bias supply
Datasheet
2,651In Stock
Min.: 1
Mult.: 1
: 3,000

SMD/SMT DFN-4 1.2 V 500 mA 1 Output Positive 27 uA 800 mV 5.5 V Fixed - 40 C + 85 C 80 mV LD56050 Reel, Cut Tape
STMicroelectronics LDO Voltage Regulators 300 mA very low dropout linear regulator IC
Datasheet
2,414In Stock
MouseReel Available
Min.: 1
Mult.: 1
: 5,000

SMD/SMT DFN-4 3.3 V 300 mA 1 Output Positive 28 uA 1.5 V 5.5 V 75 dB Fixed - 40 C + 125 C 135 mV LD59030 Reel, Cut Tape, MouseReel
STMicroelectronics LDO Voltage Regulators 500 mA very low drop voltage regulator
Datasheet
764In Stock
3,000Expected 22-09-2026
MouseReel Available
Min.: 1
Mult.: 1
: 3,000

SMD/SMT DFN-6 3.3 V 500 mA 1 Output Positive 200 uA 2.5 V 16 V Fixed - 40 C + 125 C 125 mV LDFM Reel, Cut Tape, MouseReel

STMicroelectronics LDO Voltage Regulators 500 mA very low drop voltage regulator
Datasheet
4,854Expected 02-10-2026
MouseReel Available
Min.: 1
Mult.: 1
: 3,000

SMD/SMT DFN-6 Adjustable 500 mA 1 Output Positive 200 uA 2.5 V 16 V 55 dB Adjustable - 40 C + 125 C 125 mV LDFM Reel, Cut Tape, MouseReel
STMicroelectronics LDO Voltage Regulators 200 mA low quiescent Very low noise LDO
Datasheet
6,588In Stock
MouseReel Available
Min.: 1
Mult.: 1
: 3,000

SMD/SMT SOT-323-5 3.3 V 200 mA 1 Output Positive 100 uA 1.9 V 5.5 V Fixed - 40 C + 125 C 100 mV LDK120 Reel, Cut Tape, MouseReel
STMicroelectronics LDO Voltage Regulators 200mA Low Quiescent Crnt low noise LDO
Datasheet
776In Stock
MouseReel Available
Min.: 1
Mult.: 1
: 3,000

SMD/SMT SOT-323-5 3.5 V 200 mA 1 Output Positive 50 uA 1.9 V 5.5 V Fixed - 40 C + 125 C 150 mV LDK120 Reel, Cut Tape, MouseReel
STMicroelectronics LDO Voltage Regulators 200 mA low quiescent Very low noise LDO
Datasheet
7,434In Stock
MouseReel Available
Min.: 1
Mult.: 1
: 3,000

SMD/SMT SOT-23-5 Adjustable 200 mA 1 Output Positive 100 uA 1.9 V 5.5 V Adjustable - 40 C + 125 C 100 mV LDK120 Reel, Cut Tape, MouseReel
STMicroelectronics LDO Voltage Regulators 200 mA low quiescent Very low noise LDO
Datasheet
2,508In Stock
MouseReel Available
Min.: 1
Mult.: 1
: 3,000

SMD/SMT SOT-23-5 2.5 V 200 mA 1 Output Positive 100 uA 1.9 V 5.5 V Fixed - 40 C + 125 C 100 mV LDK120 Reel, Cut Tape, MouseReel
STMicroelectronics LDO Voltage Regulators 200 mA low quiescent Very low noise LDO
Datasheet
1,754In Stock
MouseReel Available
Min.: 1
Mult.: 1
: 3,000

SMD/SMT SOT-23-5 2.8 V 200 mA 1 Output Positive 100 uA 1.9 V 5.5 V Fixed - 40 C + 125 C 100 mV LDK120 Reel, Cut Tape, MouseReel