LDQ40 250mA Low-Dropout (LDO) Voltage Regulator

STMicroelectronics LDQ40 250mA Low-Dropout (LDO) Voltage Regulator is a high-accuracy voltage regulator that provides 250mA of current. It is available in a SOT23 5L, DFN 2x2 6L package to maximize space saving. The device is stabilized with a small ceramic capacitor on the output. The low drop, low quiescent current, and short-circuit protection make the LDQ40 suitable for low-power battery-operated applications.

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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 250 mA low dropout LDO
Datasheet
5,461In Stock
Min.: 1
Mult.: 1
: 3,000

DFN-6 3.3 V 250 mA 1 Output Positive 200 uA 60 dB Fixed - 40 C + 150 C 500 mV LDQ40 Reel, Cut Tape
STMicroelectronics LDO Voltage Regulators 250 mA low dropout LDO
Datasheet
1,460In Stock
Min.: 1
Mult.: 1
: 3,000

DFN-6 5 V 250 mA 1 Output Positive 200 uA 60 dB Fixed - 40 C + 150 C 500 mV LDQ40 Reel, Cut Tape
STMicroelectronics LDO Voltage Regulators 250 mA low dropout LDO
Datasheet
2,989In Stock
MouseReel Available
Min.: 1
Mult.: 1
: 3,000

SMD/SMT DFN-6 5 V 250 mA 1 Output Positive 90 uA 55 dB Fixed - 40 C + 150 C 500 mV AEC-Q100 LDQ40 Reel, Cut Tape, MouseReel
STMicroelectronics LDO Voltage Regulators 250 mA low dropout LDO
Datasheet
3,182In Stock
MouseReel Available
Min.: 1
Mult.: 1
: 3,000

SMD/SMT DFN-6 5 V 250 mA 1 Output Positive 90 uA 55 dB Fixed - 40 C + 150 C 500 mV AEC-Q100 LDQ40 Reel, Cut Tape, MouseReel
STMicroelectronics LDO Voltage Regulators 250 mA Low dropout LDO
Datasheet
4,128In Stock
MouseReel Available
Min.: 1
Mult.: 1
: 3,000

SMD/SMT DFN-6 200 mA 1 Output Positive 2 uA 65 dB Adjustable - 40 C + 150 C 700 mV AEC-Q100 LDQ40 Reel, Cut Tape, MouseReel
STMicroelectronics LDO Voltage Regulators 250 mA low dropout LDO
Datasheet
2,558In Stock
3,000Expected 10/20/2026
MouseReel Available
Min.: 1
Mult.: 1
: 3,000

SMD/SMT DFN-6 5 V 250 mA 1 Output Positive 90 uA 55 dB Fixed - 40 C + 150 C 500 mV AEC-Q100 LDQ40 Reel, Cut Tape, MouseReel
STMicroelectronics LDO Voltage Regulators 250 mA low dropout LDO
Datasheet
1,976In Stock
3,000Expected 10/19/2026
Min.: 1
Mult.: 1
: 3,000

SMD/SMT DFN-6 3.3 V 250 mA 1 Output Positive 500 uA 55 dB Fixed - 40 C + 150 C 500 mV AEC-Q100 Reel, Cut Tape
STMicroelectronics LDO Voltage Regulators 250 mA Low dropout LDO
Datasheet
2,240In Stock
MouseReel Available
Min.: 1
Mult.: 1
: 3,000

SMD/SMT DFN-6 200 mA 1 Output Positive 2 uA 65 dB Adjustable - 40 C + 150 C 700 mV AEC-Q100 LDQ40 Reel, Cut Tape, MouseReel