LM1117DT-ADJ

Name: LM1117DT-ADJ
Brand: Texas Instruments
Availability: InStock
Rating: 4.5 (10 reviews)
Author: Lisleapex

Linear Voltage Regulators with 1.25V~13.8V adjustable positive electrode

4,471 Effective Inventory

LM1117DT-ADJ

Effective Inventory4,471

Linear Voltage Regulators with 1.25V~13.8V adjustable positive electrode

Manufacturer Part # : LM1117DT-ADJ
Other Name : LM1117DT-ADJ/NOPB
Package/Case: TO-252-3
Brand: Texas Instruments
Product Categories : Voltage Regulators - Linear, Low Drop Out (LDO) Regulators
Series : LM1117

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LM1117DT-ADJ DataSheet

Pricing (USD)

Quantity	Unit Price	Ext. Price
1	$0.558	$0.56
200	$0.216	$43.20
500	$0.208	$104.00
1000	$0.205	$205.00

These prices are subject to market fluctuations, and a quote submission is required to obtain the latest prices.

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LM1117DT-ADJ Details

The LM1117DT-ADJ is a linear voltage regulator from Texas Instruments, designed for stable and efficient power management in various applications. This device features an adjustable output voltage range of 2V to 5.5V, making it suitable for a wide range of systems. It comes in a compact TO252-3 package, offering a small footprint for PCB designs.

Pinout

Sense Input: Connects to the sense resistor to monitor output current
Output (VOUT): Provides the regulated output voltage to the load
Enable (EN): Controls the regulator's enable function for turn-on and turn-off operation

(Tip: For detailed pinout information, please refer to the corresponding datasheet.)

Key Features

Compact SOT-23 Package Size: Offers a small footprint for PCB designs and reduced space requirements.
Operating Temperature Range: Rated for use from -40°C to 125°C, making it suitable for a wide range of environments.
Quiescent Current: 1.5mA: Provides low power consumption during normal operation.
Adjustable Output Voltage Range: 2V to 5.5V: Offers flexibility in setting the regulated output voltage to meet specific system requirements.

Applications

Power Supplies: Ideal for designing stable and efficient power supplies with a wide range of output voltages.
Embedded Systems: Suitable for embedded systems that require precise voltage regulation within specific bounds.

Where to Use

The LM1117DT-ADJ is suitable for any application where a high degree of stability, efficiency, and adjustability are required. This includes power supplies for industrial control systems, medical equipment, telecommunications devices, or other applications that demand precise voltage regulation.

How to Use

To use the LM1117DT-ADJ, connect the sense input to a sense resistor to monitor output current. Set the enable pin high (1) to turn on the regulator, and low (0) to turn it off. Choose an appropriate value for the output voltage by adjusting the input voltage and monitoring the Sense input signal.

Application Circuit

A typical application circuit for the LM1117DT-ADJ involves connecting the sense input to a sense resistor, the output (VOUT) to the load, and the enable (EN) pin to an external control signal. Refer to the datasheet for detailed circuit diagram connections and usage guide.

Equivalents

LDO5: A similar low-dropout linear voltage regulator from another manufacturer, offering comparable features and performance.

Complementary

The LM1117DT-ADJ can be complemented by other linear regulators or switching regulators that offer higher output current or more advanced features for demanding applications. Ensure compatibility with your specific application requirements when selecting complementary devices.

Frequently Asked Questions

Q: What is the maximum output current supported by the LM1117DT-ADJ?

A: The LM1117DT-ADJ supports up to 1A of continuous output current. For more details, refer to the datasheet for specific operating conditions and limitations.

Q: Can the LM1117DT-ADJ be used in space-constrained applications?

A: Yes, the LM1117DT-ADJ is designed with a compact TO252-3 package, making it suitable for use in space-restricted applications where size and efficiency are critical.

Specifications

The followings are basic parameters of the part selected concerning the characteristics of the part and categories it belongs to.

Product Category !	LDO Voltage Regulators	RoHS	N
Mounting Style	SMD/SMT	Package / Case	TO-252-3
Output Voltage	1.25 V to 13.8 V	Output Current !	800 mA
Number of Outputs	1 Output	Polarity	Positive
Input Voltage, Max	15 V	Output Type	Adjustable
Minimum Operating Temperature	0 C	Maximum Operating Temperature !	+ 125 C
Dropout Voltage !	1.2 V	Series	LM1117
Brand	Texas Instruments	Dropout Voltage - Max	1.2 V at 100 mA, 1.25 V at 500 mA, 1.3 V at 800 mA
Ib - Input Bias Current	5 mA	Line Regulation !	0.035 %
Load Regulation !	0.2 %	Product Type !	LDO Voltage Regulators
Reference Voltage !	1.262 V	Factory Pack Quantity	75
Subcategory	PMIC - Power Management ICs	Voltage Regulation Accuracy	1 %
Unit Weight	0.139332 oz

Datasheet PDF

Datasheets record the features, absolute maximum ratings, applications and more of the device, which benefit a lot as an overall guide to the specific application of the part.

Preliminary Specification LM1117DT-ADJ PDF Download

FAQs

What is LM1117DT-ADJ?

The LM1117DT-ADJ is a low dropout voltage regulator designed by Texas Instruments. It is an adjustable linear regulator that is capable of providing a stable output voltage with a dropout voltage as low as 1.2V. It is widely used in various electronic devices including computer peripherals, consumer electronics, and industrial equipment.

How Does LM1117DT-ADJ Work?

The LM1117DT-ADJ operates by regulating the input voltage to provide a stable and adjustable output voltage. It uses a series-pass PNP transistor as the output control device, allowing for a low dropout voltage. The regulator is available in different fixed output voltage versions as well as an adjustable version, offering flexibility in various voltage regulation applications.

How Many Pins does LM1117DT-ADJ have and What are the Functions of the Pinout Configuration?

The LM1117DT-ADJ is housed in a 8-lead SOIC (Small Outline Integrated Circuit) package. The pinout configuration includes:

VIN: Input voltage pin.
VOUT: Output voltage pin.
ADJ: Adjustable pin for setting the output voltage in the adjustable version.
GND: Ground pin.
BYPASS: Bypass pin for connecting an external capacitor for improved transient response.

What are the Pros and Cons of LM1117DT-ADJ?

Pros:

Low Dropout Voltage: Provides stable output voltage with a low dropout voltage, enabling regulation with small input-output differentials.
Adjustable Output: The adjustable version offers the flexibility to set the output voltage to a desired value within a specified range.
Thermal Shutdown: Includes a thermal shutdown feature to protect the device during over-temperature conditions.
Protection Features: Offers protection against overcurrent and reversed battery conditions in some models.

Cons:

Heat Dissipation: May require additional heat sinking or thermal considerations, especially in high current applications.
External Capacitor: The adjustable version requires an external capacitor for stable operation, adding to the component count and board space.

Are There Any Equivalents/Alternatives to LM1117DT-ADJ for Recommendation?

The LDO regulators such as the LM2937 from Texas Instruments and the MCP1703 from Microchip Technology are alternatives to the LM1117DT-ADJ.
The LP2985 from Texas Instruments and the MAX8887 from Maxim Integrated are also potential equivalents to the LM1117DT-ADJ.