Texas Instruments

TLV70018DCKR - 200mA Low-IQ LDO Regulator | Texas Instruments

Name: TLV70018DCKR
Brand: Texas Instruments
Price: 0.25 USD
Availability: InStock

MPN: TLV70018DCKR ✓ Active

In Stock Ships in 1-3 business days

1.8 V Vdss 200 mA Id 250 °C/W Rds(on) SC-70-5 (DCK) Package

From $0.25 USD / Unit

MOQ: 1 |

Price updated: 2026-08-24

Volume Pricing

Qty	Unit Price	Extended
1	$0.48	$0.48
10	$0.42	$4.20
100	$0.35	$35.00
500	$0.3	$150.00
1,000	$0.25	$250.00

ℹ️ All prices are in USD

View Datasheet (PDF) View Alternatives

Quantity

Drop-in alternatives for TLV70018DCKR — same package, pin-to-pin compatible. Different-package parts requiring PCB rework are excluded.

Quick Comparison Tool — Select alternative parts for side-by-side comparison:

TLV70018DCKT

✅ Drop-In

📦 SC-70-5 (DCK)

Same die and package, different reel size

📋 Reference alternative (not in catalog)

TLV70018DSER

✅ Drop-In

📦 SC-70-5 (DCK)

Same package, different output voltage option

📋 Reference alternative (not in catalog)

TPS79718DCKT

✅ Drop-In

📦 SC-70-5 (DCK)

Similar LDO, same package, different quiescent current

📋 Reference alternative (not in catalog)

ISL9008AIEMZ-T

✅ Drop-In

📦 SC-70-5

Cross-brand, 150mA output, similar package

📋 Reference alternative (not in catalog)

ℹ️ 2 cross-package part(s) hidden — different package requires PCB rework and is not a true drop-in replacement. Contact us if you need cross-package suggestions.

TLV70018DCKR Maximum Ratings & Electrical Characteristics

Output Type	Fixed
Output Voltage	1.8 V
Maximum Output Current	200 mA
Input Voltage Range	2 V to 5.5 V
Dropout Voltage	130 mV at 200 mA
Quiescent Current	31 µA (typical)
PSRR	68 dB at 1 kHz
Output Accuracy	±2%
Enable Pin	Yes (active-high)
Operating Temperature	-40°C to +125°C
Package	SC-70-5 (DCK)
Mounting Type	Surface Mount
Thermal Resistance (θJA)	250 °C/W
RoHS Status	Compliant
MSL Level	1

TLV70018DCKR Pin Configuration

Pin 1	IN — Input voltage supply
Pin 2	GND — Ground
Pin 3	EN — Enable (active high)
Pin 4	NC — No connect
Pin 5	OUT — Regulated output voltage

Safe Operating Area (SOA) & Thermal Characteristics

No official SOA curve available for this component. Always operate within absolute maximum ratings specified in the datasheet. Ensure adequate cooling and derate as needed.

Typical Applications

TLV70018DCKR is suitable for 6 applications: Portable Battery-Powered Devices, IoT and Smart Home Sensors, Wearable Health Monitors, RF and Wireless Modules, Industrial Sensor Interfaces, Audio and Analog Circuits.

📱

Portable Battery-Powered Devices

The TLV70018DCKR's low quiescent current (31 µA) and low dropout voltage (130 mV) make it ideal for battery-powered devices such as smartphones, wearables, and IoT sensors. It efficiently regulates the battery voltage to a stable 1.8V rail for digital cores and sensors, extending battery life. The enable pin allows power gating to further reduce standby power consumption.

Recommended

🧩

IoT and Smart Home Sensors

In IoT nodes, the TLV70018DCKR provides a clean 1.8V supply for sensors and microcontrollers, with high PSRR (68 dB at 1 kHz) to reject noise from the battery or energy harvester. Its small SC-70 package fits compact PCB layouts. The low quiescent current is crucial for battery-powered sensors that spend most time in sleep mode.

Recommended

CC3135RNMARG · Texas Instruments OPT3001 (Light sensor requiring low-noise supply)

💊

Wearable Health Monitors

Wearable devices demand minimal power consumption and small form factor. The TLV70018DCKR delivers 200mA with a dropout of only 130mV, ensuring efficient operation from a single-cell Li-ion battery. Its enable pin allows the system to shut down the regulator during inactive periods, reducing quiescent current to near zero. The low noise output is suitable for analog front-ends in health monitoring.

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ADS1115IDGSR · Texas Instruments MSP430FR5989IPMR · Texas Instruments

🌐

RF and Wireless Modules

The TLV70018DCKR's high PSRR (68 dB at 1 kHz) and low noise make it suitable for powering RF transceivers and wireless modules, where supply noise can degrade signal integrity. It provides a stable 1.8V rail for the RF section, ensuring consistent performance. The low dropout voltage allows operation from a 2V supply, which is common in battery-powered RF designs.

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CC2652R1FRGZR · Texas Instruments CC3135RNMARG · Texas Instruments

🏭

Industrial Sensor Interfaces

In industrial settings, the TLV70018DCKR provides a regulated 1.8V supply for sensor interfaces and signal conditioning circuits. Its wide operating temperature range (-40°C to +125°C) ensures reliability in harsh environments. The low quiescent current and small package make it suitable for distributed sensor nodes. The enable pin can be used for power sequencing in multi-rail systems.

Recommended

INA219AIDCNR · Texas Instruments ADS1115IDGSR · Texas Instruments

🎧

Audio and Analog Circuits

The TLV70018DCKR's low noise and high PSRR make it suitable for powering audio codecs and analog circuits, where supply noise can introduce audible artifacts. It provides a clean 1.8V rail for the analog section, ensuring high fidelity. The low dropout voltage allows efficient operation from a 2V supply, which is common in battery-powered audio devices.

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OPA2134UA/2K5 · Texas Instruments DAC80508ZYZFR · Texas Instruments

Recommended Products Summary

What is the output voltage of TLV70018DCKR?

The TLV70018DCKR provides a fixed output voltage of 1.8V. According to the TI datasheet, it can deliver up to 200mA of output current with an input voltage range of 2V to 5.5V. This makes it suitable for powering low-voltage digital circuits and sensors.

What is the quiescent current of TLV70018DCKR?

The TLV70018DCKR has a typical quiescent current of 31 µA. This low quiescent current is ideal for battery-powered portable devices, as it minimizes power consumption during standby or light-load conditions, extending battery life.

What is the dropout voltage of TLV70018DCKR?

The TLV70018DCKR has a typical dropout voltage of 130 mV at 200 mA output current. This low dropout allows the regulator to maintain a stable 1.8V output even when the input voltage is as low as 1.93V, maximizing efficiency in battery applications.

What is the PSRR of TLV70018DCKR?

The TLV70018DCKR offers a power supply rejection ratio (PSRR) of 68 dB at 1 kHz. This high PSRR helps attenuate noise from the input supply, providing a clean output voltage for sensitive analog and RF circuits.

Does TLV70018DCKR have an enable pin?

Yes, the TLV70018DCKR includes an active-high enable pin. When the enable pin is pulled low, the regulator shuts down, reducing quiescent current to nearly zero. This feature is useful for power sequencing and power saving in portable devices.

What is the operating temperature range of TLV70018DCKR?

The TLV70018DCKR operates over a junction temperature range of -40°C to +125°C. This wide range makes it suitable for industrial and automotive applications, although it is not AEC-Q100 qualified.

What package is TLV70018DCKR available in?

The TLV70018DCKR is available in a 5-pin SC-70 (DCK) package, also known as SOT-353. This small package is ideal for space-constrained PCB designs, such as wearables and IoT modules.

What is the price of TLV70018DCKR?

As of 2026-08-25, the unit price for TLV70018DCKR is approximately $0.48 at quantity 1, decreasing to $0.25 at quantity 1000. Prices may vary by distributor and availability.

Where can I buy TLV70018DCKR?

TLV70018DCKR is available from major distributors such as DigiKey, Mouser, and Octopart. You can also purchase directly from Texas Instruments' website. Check current stock and pricing on these platforms.

What is the lead time for TLV70018DCKR?

The lead time for TLV70018DCKR is typically 1-2 weeks from major distributors like DigiKey and Mouser, depending on stock levels. For large quantities, it is advisable to check with the distributor for accurate lead times.

Is TLV70018DCKR in stock?

As of 2026-08-25, TLV70018DCKR is in stock at major distributors such as DigiKey and Mouser. For real-time inventory, please check the distributor websites.

What is the difference between TLV70018DCKR and TLV70018DCKT?

The TLV70018DCKR and TLV70018DCKT are electrically identical, but they differ in packaging. The DCKR variant is supplied in tape and reel, while the DCKT variant is supplied in a different reel size. Both are in the same SC-70-5 package and are drop-in replacements.

Can TLV70018DCKR be used for battery-powered applications?

Yes, the TLV70018DCKR is specifically designed for portable devices. Its low quiescent current (31 µA) and low dropout voltage (130 mV) make it ideal for battery-powered applications, ensuring efficient power conversion and extended battery life.

What is the best drop-in replacement for TLV70018DCKR?

The TLV70018DCKT is a direct drop-in replacement, as it is the same die in the same SC-70-5 package with identical electrical specifications. Other pin-compatible alternatives include the TLV70018DSER (same package) and the TLV70018DDCT (different package, not drop-in).

What are the key specifications of TLV70018DCKR that engineers should know?

Engineers should note the TLV70018DCKR's fixed 1.8V output, 200mA current capability, 2V to 5.5V input range, 31 µA quiescent current, 68 dB PSRR at 1 kHz, and 130 mV dropout at full load. It comes in a 5-pin SC-70 package and operates from -40°C to +125°C.

Engineering reference data for TLV70018DCKR — comparison, design guidance, and compliance information.

Selection Guide

Choose the TLV70018DCKR when you need a fixed 1.8V output with up to 200mA current in a compact SC-70 package, especially for battery-powered or portable applications where low quiescent current and high PSRR are important. If you require a lower quiescent current (1.2 µA) and can accept a lower output current (50mA), consider the TPS79718DCKT. For a cross-brand alternative with similar performance, the ISL9008AIEMZ-T from Renesas offers 150mA output and 70 dB PSRR, but with a higher dropout voltage. If you need a different package (SOT-23-5), the TLV70018DDCR is functionally equivalent but not pin-compatible. For automotive applications, the TLV70018QDDCRQ1 is AEC-Q100 qualified but in a different package.

Comparison with Alternatives

Parameter	This Product	TLV70018DCKT	TLV70018DSER	TPS79718DCKT	ISL9008AIEMZ-T
Package	SC-70-5 (DCK)	SC-70-5 (DCK)	SC-70-5 (DCK)	SC-70-5 (DCK)	SC-70-5
Brand	Texas Instruments	Texas Instruments	Texas Instruments	Texas Instruments	Renesas
Output Voltage	1.8V	1.8V	1.8V	1.8V	1.8V
Output Current	200mA	200mA	200mA	50mA	150mA
Quiescent Current	31 µA	31 µA	31 µA	1.2 µA	40 µA
Dropout Voltage	130 mV	130 mV	130 mV	120 mV	200 mV
PSRR at 1kHz	68 dB	68 dB	68 dB	60 dB	70 dB
Enable Pin	Yes	Yes	Yes	Yes	Yes

Key Differentiators

Low quiescent current of 31 µA (vs TPS79718DCKT)
High PSRR of 68 dB at 1 kHz (vs ISL9008AIEMZ-T)
Small SC-70 package (vs TLV70018DDCR)

Design Notes

Place input and output capacitors as close to the IN and OUT pins as possible. Use 1-µF X5R or X7R ceramic capacitors for stability. The TLV700 is stable with an effective output capacitance of 0.1 µF or larger, but 1 µF is recommended for optimal transient response.

The SC-70 package has a thermal resistance (θJA) of 250°C/W. At maximum input voltage (5.5V) and 200mA load, power dissipation is (5.5V - 1.8V) * 0.2A = 0.74W, causing a temperature rise of 185°C. This exceeds the maximum junction temperature, so ensure adequate PCB copper area or reduce the input voltage/load current to stay within thermal limits.

Do not exceed the input voltage range of 5.5V. The enable pin is active-high; leave it unconnected if not used, but it has an internal pull-down, so the regulator will be disabled by default. Ensure the output capacitor is rated for the output voltage and temperature range.