TLV70018DCKR - 200mA Low-IQ LDO Regulator | Texas Instruments
MPN: TLV70018DCKR ✓ Active| Qty | Unit Price | Extended |
|---|---|---|
| 1 | $0.48 | $0.48 |
| 10 | $0.43 | $4.30 |
| 100 | $0.38 | $38.00 |
| 500 | $0.34 | $170.00 |
| 1,000 | $0.3 | $300.00 |
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📋 Reference alternative (not in catalog)
TLV70015DCKR
✅ Drop-In📋 Reference alternative (not in catalog)
ISL9008AIEMZ-T
⚡ Same Package📋 Reference alternative (not in catalog)
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 (typical) |
| Quiescent Current | 31 µA (typical) |
| PSRR | 68 dB at 1 kHz |
| Output Accuracy | ±2% |
| Enable Pin | Yes (active-high) |
| Package | SC-70-5 (DCK) |
| Operating Temperature Range | -40°C to +125°C |
| Thermal Resistance (θJA) | 250°C/W |
| Maximum Power Dissipation | 555 mW |
| Output Capacitor | 1 µF ceramic (minimum) |
| RoHS Status | Compliant |
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 |
TLV70018DCKR Power Derating Curve
TLV70018DCKR Power Derating Curve
Typical Applications
TLV70018DCKR is suitable for 6 applications: Portable Battery-Powered Devices, IoT and Smart Home Sensors, RF and Wireless Modules, Audio and Analog Circuits, Industrial Sensors and Control, Medical and Healthcare Devices.
Portable Battery-Powered Devices
The TLV70018DCKR's low quiescent current of 31 µA and low dropout voltage of 130 mV make it ideal for battery-powered devices like smartphones and wearables. It efficiently regulates 1.8V from a 3.0-4.2V Li-ion battery, extending battery life. The enable pin allows power gating to reduce standby current to near zero, critical for always-on IoT sensors. Its small SC-70-5 package fits compact PCBs, and the 200mA output is sufficient for low-power MCUs and wireless modules.
Recommended
IoT and Smart Home Sensors
In IoT nodes, the TLV70018DCKR provides a stable 1.8V rail for sensors and microcontrollers, with 68 dB PSRR at 1 kHz to reject noise from intermittent RF transmissions. Its 31 µA quiescent current is ideal for battery-operated sensors that spend most time in sleep mode. The enable pin enables duty-cycled operation, reducing average power consumption. The SC-70-5 package is small enough for smart home devices like thermostats and motion detectors, ensuring reliable operation over -40°C to +125°C.
Recommended
RF and Wireless Modules
The TLV70018DCKR's high PSRR of 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 clean 1.8V rail for VCOs, PLLs, and baseband processors. The 200mA output handles peak currents during transmission, while the low dropout ensures regulation even with a 2V input. The enable pin allows power sequencing to prevent latch-up in multi-rail systems.
Recommended
Audio and Analog Circuits
For audio codecs and analog sensors, the TLV70018DCKR provides a low-noise 1.8V supply with 68 dB PSRR, minimizing audible hum and interference. Its low quiescent current is beneficial for portable audio players. The fixed output simplifies design, and the SC-70-5 package fits in compact audio modules. The 200mA output is sufficient for op-amps and DACs, while the enable pin can mute the supply during standby, reducing power consumption.
Recommended
Industrial Sensors and Control
In industrial environments, the TLV70018DCKR operates over -40°C to +125°C, making it suitable for harsh conditions. It provides a stable 1.8V rail for sensors, ADCs, and microcontrollers in factory automation. The 200mA output handles sensor excitation and signal conditioning circuits. Its high PSRR rejects noise from industrial power lines, and the enable pin allows remote shutdown for safety. The SC-70-5 package is robust for PCB mounting in control modules.
Recommended
Medical and Healthcare Devices
The TLV70018DCKR's low noise and high PSRR make it suitable for medical devices like glucose monitors and pulse oximeters, where clean power is essential for accurate measurements. Its low quiescent current extends battery life in portable medical equipment. The 1.8V output is compatible with low-voltage sensors and MCUs. The enable pin allows power management in duty-cycled devices, and the SC-70-5 package is small enough for wearable health monitors.
Recommended
Recommended Products Summary
Engineering reference data for TLV70018DCKR — comparison, design guidance, and compliance information.
Selection Guide
Comparison with Alternatives
| Parameter | This Product | TLV70018DCKT | TLV70018DSER | TLV70018DDCR | TLV70015DCKR | ISL9008AIEMZ-T |
|---|---|---|---|---|---|---|
| Package | SC-70-5 (DCK) | SC-70-5 (DCK) - same | WSON-6 (DSE) - different | SOT-23-5 (DDC) - different | SC-70-5 (DCK) - same | SC-70-5 - same |
| Brand | Texas Instruments | Texas Instruments | Texas Instruments | Texas Instruments | Texas Instruments | Intersil |
| Output Voltage | 1.8V | 1.8V | 1.8V | 1.8V | 1.5V | 1.8V (fixed) |
| Output Current | 200mA | 200mA | 200mA | 200mA | 200mA | 150mA |
| Quiescent Current | 31 µA | 31 µA | 31 µA | 31 µA | 31 µA | [DATA_NEEDED] |
| Dropout Voltage | 130 mV | 130 mV | 130 mV | 130 mV | 130 mV | [DATA_NEEDED] |
| PSRR | 68 dB at 1 kHz | 68 dB at 1 kHz | 68 dB at 1 kHz | 68 dB at 1 kHz | 68 dB at 1 kHz | [DATA_NEEDED] |
| Enable Pin | Yes | Yes | Yes | Yes | Yes | Yes |
Key Differentiators
- Low quiescent current of 31 µA (vs ISL9008AIEMZ-T)
- High PSRR of 68 dB at 1 kHz (vs ISL9008AIEMZ-T)
- Drop-in compatibility with TLV70018DCKT (vs TLV70018DCKT)
Design Notes
Place input and output capacitors as close to the IN and OUT pins as possible. Use a 1 µF ceramic capacitor on the input and a 1 µF ceramic capacitor on the output, as recommended in the TI datasheet. Keep traces short and wide to minimize parasitic inductance and ensure stability.
The SC-70-5 package has a thermal resistance of 250°C/W. At maximum input-to-output differential (5.5V - 1.8V = 3.7V) and 200mA load, power dissipation is 740mW, which exceeds the 555mW maximum. Ensure adequate copper area on the PCB to dissipate heat, or reduce the input voltage or load current to stay within safe operating limits.
Do not exceed the input voltage range of 5.5V. The enable pin is active-high; leave it unconnected or tie to IN if not used. Ensure the output capacitor is at least 1 µF and has low ESR to maintain stability. Avoid reverse current from output to input, as the device does not have reverse current protection.
Compliance Information
RoHS compliant per TI product page. Not AEC-Q100 qualified. Lead-free per TI datasheet.
