TLV743P - 300mA Low-Dropout Regulator | Texas Instruments
MPN: TLV743P β Active| Qty | Unit Price | Extended |
|---|---|---|
| 1 | $0.35 | $0.35 |
| 10 | $0.3 | $3.00 |
| 100 | $0.25 | $25.00 |
| 500 | $0.2 | $100.00 |
| 1,000 | $0.18 | $180.00 |
Drop-in alternatives for TLV743P 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:
TLV74333PDBVR
β Drop-Inπ Reference alternative (not in catalog)
TLV74310PDBVR
β Drop-Inπ Reference alternative (not in catalog)
TLV74318PDBVR
β Drop-Inπ Reference alternative (not in catalog)
AP2127K-3.3TRG1
β Drop-Inπ Reference alternative (not in catalog)
MIC5205-3.3YM5
β Drop-Inπ Reference alternative (not in catalog)
TLV743P Maximum Ratings & Electrical Characteristics
| Output Current | 300 mA |
| Accuracy | 1% typical |
| Output Capacitor | 1 Β΅F |
| Quiescent Current | [DATA_NEEDED: Quiescent Current] |
| Dropout Voltage | [DATA_NEEDED: Dropout Voltage] |
| Input Voltage Range | [DATA_NEEDED: Input Voltage Range] |
| Output Voltage Options | Fixed options available (e.g., TLV74333PDBVR for 3.3V) |
| Package | SOT-23 (DBV), X2SON (DQN) |
| Operating Temperature Range | [DATA_NEEDED: Operating Temperature Range] |
| Active Pulldown | Yes |
| Foldback Current Control | Yes |
| Line Transient Performance | Good |
| Load Transient Performance | Good |
| RoHS | Compliant |
| Mounting Type | Surface Mount |
TLV743P Pin Configuration
| Pin 1 | OUT β Regulated output voltage |
| Pin 2 | GND β Ground |
| Pin 3 | EN β Enable (active high) |
| Pin 4 | IN β Input supply 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
TLV743P is suitable for 6 applications: Portable Electronics, IoT Devices, Wearable Devices, Battery-Powered Sensors, Consumer Electronics, Industrial Control.
Portable Electronics
The TLV743P's low quiescent current and small SOT-23 package make it ideal for battery-powered portable devices. Its 1% accuracy ensures stable voltage for microcontrollers and sensors, while the active pulldown aids in power sequencing. The 300mA output is sufficient for most portable applications, and the 1Β΅F output capacitor minimizes board space.
Recommended
IoT Devices
In IoT devices, the TLV743P provides a stable, low-noise supply for wireless modules and sensors. Its low quiescent current extends battery life in always-on applications. The small package allows integration into compact designs. The active pulldown ensures quick discharge during shutdown, preventing false wake-ups. The 1% accuracy is sufficient for most IoT sensors.
Recommended
Wearable Devices
The TLV743P's ultra-small X2SON package and low quiescent current are perfect for wearables. It can power sensors, displays, and microcontrollers with minimal power loss. The 1% accuracy ensures reliable operation of sensitive components. The active pulldown helps in power management, and the 1Β΅F capacitor reduces component count, saving space in compact designs.
Recommended
Battery-Powered Sensors
For battery-powered sensors, the TLV743P provides a stable voltage rail with minimal quiescent current, extending battery life. Its small package fits into compact sensor nodes. The 1% accuracy ensures consistent sensor readings. The active pulldown allows rapid power-down, and the foldback current control protects the sensor during startup.
Recommended
Consumer Electronics
In consumer electronics, the TLV743P powers audio codecs, display drivers, and other peripherals. Its low noise and 1% accuracy ensure high-quality performance. The small package allows for slim designs. The active pulldown prevents pop noises in audio circuits during shutdown. The 300mA output is adequate for most consumer peripherals.
Recommended
Industrial Control
The TLV743P can be used in industrial control systems to provide a stable reference voltage for sensors and ADCs. Its 1% accuracy and low quiescent current are beneficial in always-on monitoring equipment. The small package allows for high-density PCB layouts. The active pulldown ensures safe shutdown in safety-critical systems.
Recommended
Recommended Products Summary
Engineering reference data for TLV743P β comparison, design guidance, and compliance information.
Selection Guide
Comparison with Alternatives
| Parameter | This Product | TLV74333PDBVR | TLV74310PDBVR | AP2127K-3.3TRG1 | MIC5205-3.3YM5 |
|---|---|---|---|---|---|
| Package | SOT-23 (DBV) | SOT-23 (DBV) | SOT-23 (DBV) | SOT-23 | SOT-23-5 |
| Brand | Texas Instruments | Texas Instruments | Texas Instruments | Diodes Incorporated | Microchip Technology |
| Output Current | 300 mA | 300 mA | 300 mA | 300 mA | 150 mA |
| Accuracy | 1% | 1% | 1% | 2% | 1% |
| Output Capacitor | 1 Β΅F | 1 Β΅F | 1 Β΅F | 1 Β΅F | 1 Β΅F |
| Active Pulldown | Yes | Yes | Yes | No | No |
| Quiescent Current | [DATA_NEEDED] | [DATA_NEEDED] | [DATA_NEEDED] | 50 Β΅A | 150 Β΅A |
| Dropout Voltage | [DATA_NEEDED] | [DATA_NEEDED] | [DATA_NEEDED] | 300 mV at 300 mA | 165 mV at 150 mA |
Key Differentiators
- Active pulldown for fast discharge (vs AP2127K-3.3TRG1)
- Higher accuracy (1%) (vs AP2127K-3.3TRG1)
- Same-brand family compatibility (vs MIC5205-3.3YM5)
Design Notes
Place the 1 Β΅F output capacitor as close as possible to the OUT pin to ensure stability and minimize noise. Use a low-ESR ceramic capacitor. The input capacitor is also recommended to filter input noise and improve transient response.
The TLV743P in SOT-23 package has limited thermal dissipation. For high input-to-output voltage differences, power dissipation may be significant. Ensure adequate copper area on the PCB to dissipate heat. For continuous operation above 100 mA, consider the thermal impedance of the package.
Do not exceed the maximum input voltage rating. The active pulldown will discharge the output when disabled, but ensure the EN pin is properly driven. Avoid using output capacitors larger than specified, as this may affect stability. Always verify the exact pinout from the datasheet before layout.
Compliance Information
RoHS compliance is indicated in the datasheet. Other compliance details are not specified in the available data.
