TPS7A26-Q1 - 500mA 18V Ultra-Low IQ LDO | Texas Instruments
MPN: TPS7A26-Q1 β Active| Qty | Unit Price | Extended |
|---|---|---|
| 1 | $1.2 | $1.20 |
| 10 | $1.08 | $10.80 |
| 100 | $0.96 | $96.00 |
| 500 | $0.85 | $425.00 |
| 1,000 | $0.76 | $760.00 |
Drop-in alternatives for TPS7A26-Q1 β same package, pin-to-pin compatible. Different-package parts requiring PCB rework are excluded.
Quick Comparison Tool β Select alternative parts for side-by-side comparison:
TPS7A2601DRVR
β Drop-Inπ Reference alternative (not in catalog)
TPS7A2633DRVR
β Drop-Inπ Reference alternative (not in catalog)
TLV755P
β Drop-Inπ Reference alternative (not in catalog)
LP2989
β Drop-Inπ Reference alternative (not in catalog)
TPS745-Q1
β Drop-Inπ Reference alternative (not in catalog)
TPS7A26-Q1 Maximum Ratings & Electrical Characteristics
| Output Type | Adjustable/Fixed |
| Output Voltage Range | Fixed: 1.25 V to 5.5 V; Adjustable: 1.24 V to 17.4 V |
| Maximum Output Current | 500 mA |
| Input Voltage Range | 2.4 V to 18 V |
| Quiescent Current | 2.0 uA |
| Dropout Voltage | 590 mV (max) at 500 mA |
| Output Accuracy | 1% over temperature |
| Power Good | Open-drain output |
| Package | 6-WSON (2x2) |
| Mounting Type | Surface Mount |
| Operating Temperature | -40C to +125C |
| Automotive Qualification | AEC-Q100 |
| RoHS Status | Compliant |
| Thermal Shutdown | Yes |
| Current Limiting | Yes |
TPS7A26-Q1 Pin Configuration
| Pin 1 | IN β Input voltage |
| Pin 2 | GND β Ground |
| Pin 3 | EN β Enable (active high) |
| Pin 4 | PG β Power good (open-drain) |
| Pin 5 | OUT β Regulated output voltage |
| Pin 6 | NC β No connect |
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
TPS7A26-Q1 is suitable for 6 applications: Automotive Body Control Module, Infotainment System, Battery-Powered Portable Device, Industrial Sensor Node, Standby Power Supply, Medical Monitoring Device.
Automotive Body Control Module
The TPS7A26-Q1 provides a clean 3.3V rail for body control modules (BCM) in vehicles. With 2.4-18V input, it handles cold-crank and load-dump transients. Its 2.0-uA quiescent current keeps standby power low, critical for always-on BCM functions. The power-good output enables proper sequencing of MCU and peripherals, ensuring reliable power-on reset.
Recommended
Infotainment System
The TPS7A26-Q1 powers audio and display subsystems in infotainment systems. Its low noise and high PSRR reduce interference with audio signals, while the 500mA output handles powering codecs and small displays. The 1% accuracy ensures precise supply for sensitive analog components. Power-good enables coordinated startup of multiple rails.
Recommended
Battery-Powered Portable Device
The TPS7A26-Q1 extends battery life in portable devices with its 2.0-uA quiescent current. Operating from a single Li-ion cell, it regulates 2.4-18V input down to a stable rail for MCUs and sensors. The wide input range supports various battery chemistries. Compact 6-WSON package saves space in handheld designs.
Recommended
Industrial Sensor Node
The TPS7A26-Q1 regulates supply for industrial sensor nodes, ensuring clean power for precision measurement. Its high accuracy and low quiescent current suit field instruments with limited power budgets. The power-good output signals the MCU of supply validity, enabling safe startup. Wide input range accommodates 24V field power with reverse protection.
Recommended
Standby Power Supply
The TPS7A26-Q1 is ideal for standby power supplies in appliances, providing always-on voltage with ultra-low IQ. It meets stringent standby power standards, drawing only 2.0 uA. The 500mA output supports wake-up circuits, RTCs, and communication interfaces. Power-good enables the main system controller to monitor standby rail readiness.
Recommended
Medical Monitoring Device
The TPS7A26-Q1 provides reliable power for medical monitoring devices, such as patient monitors and portable diagnostic equipment. Its low noise and high accuracy ensure signal integrity for sensitive biosignal circuits. Battery operation is extended by the 2.0-uA IQ. Power-good output helps implement safety-oriented power sequencing.
Recommended
Recommended Products Summary
Engineering reference data for TPS7A26-Q1 β comparison, design guidance, and compliance information.
Selection Guide
Comparison with Alternatives
| Parameter | This Product | TPS7A2601DRVR | TPS7A2633DRVR | TLV755P |
|---|---|---|---|---|
| Package | 6-WSON (2x2) | 6-WSON (2x2) | 6-WSON (2x2) | 6-WSON (2x2) |
| Brand | Texas Instruments | Texas Instruments | Texas Instruments | Texas Instruments |
| Maximum Output Current | 500 mA | 500 mA | 500 mA | 500 mA |
| Input Voltage Range | 2.4 V to 18 V | 2.4 V to 18 V | 2.4 V to 18 V | 2.5 V to 5.5 V |
| Quiescent Current | 2.0 uA | 2.0 uA | 2.0 uA | 30 uA |
| Dropout Voltage | 590 mV max | 590 mV max | 590 mV max | 350 mV typ |
| Output Accuracy | 1% | 1% | 1% | 1% |
| Automotive Qualified | Yes (AEC-Q100) | No | No | No |
Key Differentiators
- Ultra-low quiescent current (2.0 uA) (vs TLV755P)
- AEC-Q100 automotive qualification (vs TPS7A2601DRVR)
- Integrated power-good output (vs LP2989)
Design Notes
At maximum dropout (590mV) and 500mA, power dissipation is 0.295 W. The 6-WSON (2x2) package with exposed pad has a thermal resistance of approximately 60 C/W, resulting in a 17.7 C rise above ambient. Ensure a solid ground plane and adequate copper under the pad to keep junction temperature within limits.
Place the input and output capacitors close to the IC pins to minimize loop inductance. TI recommends a 1-uF input capacitor and a 1-uF output capacitor (ceramic, X7R) for stability. Use wide traces for output current paths to reduce IR drop and improve thermal performance.
Avoid exceeding the 18V input absolute maximum. Ensure the enable pin is properly driven for power sequencing. The power-good output is open-drain; a pull-up resistor is required. Without it, the PG signal floats and can cause false fault detection.
Compliance Information
TPS7A26-Q1 is AEC-Q100 qualified for automotive applications.
