TPS7A6333QPWPRQ1 - 300mA 40V Automotive LDO | Texas Instruments
MPN: TPS7A6333QPWPRQ1 β Active| Qty | Unit Price | Extended |
|---|---|---|
| 1 | $0 | $0.00 |
| 10 | $0 | $0.00 |
| 100 | $0 | $0.00 |
| 500 | $0 | $0.00 |
| 1,000 | $0 | $0.00 |
| 3,000 | $0 | $0.00 |
Drop-in alternatives for TPS7A6333QPWPRQ1 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:
TPS7A6301QPWPRQ1
β Drop-Inπ Reference alternative (not in catalog)
TPS7A6350QPWPRQ1
β‘ Same Packageπ Reference alternative (not in catalog)
TPS7A6401QPWPRQ1
β Drop-Inπ Reference alternative (not in catalog)
TPS7A6318QPWPRQ1
β‘ Same Packageπ Reference alternative (not in catalog)
TPS7A6325QPWPRQ1
β‘ Same Packageπ Reference alternative (not in catalog)
TPS7A6333QPWPRQ1 Maximum Ratings & Electrical Characteristics
| Output Type | Fixed |
| Output Voltage | 3.3 V |
| Maximum Output Current | 300 mA |
| Input Voltage (Max) | 40 V |
| Transient Input Voltage | 45 V |
| Dropout Voltage | 300 mV at 300 mA |
| Quiescent Current | 35 Β΅A (typ) at light loads |
| Sleep Current | < 2 Β΅A when EN = Low |
| Package | HTSSOP-14 (PWP) |
| Mounting Type | Surface Mount |
| Watchdog Timer | Integrated programmable window watchdog |
| Overcurrent Protection | Yes |
| Lead Free | Lead Free |
| RoHS Status | RoHS Compliant |
| AEC-Q100 | Qualified |
| Output Voltage Accuracy | [DATA_NEEDED: output voltage accuracy] |
| PSRR | [DATA_NEEDED: PSRR] |
| Operating Temperature Range | [DATA_NEEDED: operating temperature range] |
TPS7A6333QPWPRQ1 Pin Configuration
| Pin 1 | IN β Input supply |
| Pin 2 | IN β Input supply |
| Pin 3 | IN β Input supply |
| Pin 4 | EN β Enable input |
| Pin 5 | WDI β Watchdog input |
| Pin 6 | WDO β Watchdog output |
| Pin 7 | GND β Ground |
| Pin 8 | GND β Ground |
| Pin 9 | NC β No connect |
| Pin 10 | NC β No connect |
| Pin 11 | NC β No connect |
| Pin 12 | OUT β Regulated output |
| Pin 13 | OUT β Regulated output |
| Pin 14 | OUT β Regulated output |
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
TPS7A6333QPWPRQ1 is suitable for 6 applications: Automotive ECU Power Supply, Body Control Module, Infotainment System, Battery Management System, ADAS Sensor Power, Industrial Battery-Powered Sensor.
Automotive ECU Power Supply
The TPS7A6333QPWPRQ1 provides a clean 3.3V rail for automotive ECUs, with 40V input tolerance and 45V transient handling. Its 300mA output can supply microcontrollers and sensors, while the integrated watchdog timer monitors system health. The LDO's low quiescent current of 35Β΅A reduces battery drain in standby modes, critical for always-on automotive systems.
Recommended
Body Control Module
In body control modules, the TPS7A6333QPWPRQ1 delivers a regulated 3.3V from the 12V battery rail. Its 300mV dropout at 300mA ensures efficient operation under battery voltage dips. The watchdog timer provides independent monitoring of the microcontroller, enabling fail-safe reset mechanisms. Off-battery operation up to 40V accommodates load dump conditions without external protection.
Recommended
Infotainment System
The TPS7A6333QPWPRQ1 supplies 3.3V to infotainment processing units, with noise-sensitive audio and display circuitry. The LDO's low quiescent current helps minimize heat in the compact enclosure. Its 45V transient rating protects against automotive voltage spikes from alternator load changes. The 300mA current capability supports multiple peripherals such as USB bridges and display drivers.
Recommended
Battery Management System
The TPS7A6333QPWPRQ1 provides a stable 3.3V reference rail for battery management ICs. Its 35Β΅A quiescent current is essential for minimizing self-discharge in battery packs. The watchdog timer can be used to monitor the BMS controller, ensuring safe operation. The wide 40V input range allows direct connection to the battery voltage, eliminating the need for a pre-regulator.
Recommended
ADAS Sensor Power
For ADAS radar and camera modules, the TPS7A6333QPWPRQ1 provides a clean 3.3V rail to sensitive analog front-ends. The LDO's high input voltage tolerance and automotive qualification meet the stringent reliability requirements of safety-critical systems. Its integrated watchdog offers an additional layer of system protection, while the 300mA output can power image sensors and radar processors.
Recommended
Industrial Battery-Powered Sensor
The TPS7A6333QPWPRQ1 is well suited for industrial sensors operating from 24V or 48V buses. Its low quiescent current extends battery life in wireless sensor nodes. The 40V input capability allows direct connection to industrial supply rails, and the watchdog timer can reset a hung microcontroller. The 300mA output can power sensors, transceivers, and signal conditioning circuits.
Recommended
Recommended Products Summary
Engineering reference data for TPS7A6333QPWPRQ1 β comparison, design guidance, and compliance information.
Selection Guide
Comparison with Alternatives
| Parameter | This Product | TPS7A6301QPWPRQ1 | TPS7A6350QPWPRQ1 | TPS7A6401QPWPRQ1 | TPS7A6318QPWPRQ1 |
|---|---|---|---|---|---|
| Package | HTSSOP-14 (PWP) | HTSSOP-14 (PWP) - same | HTSSOP-14 (PWP) - same | HTSSOP-14 (PWP) - same | HTSSOP-14 (PWP) - same |
| Brand | Texas Instruments | Texas Instruments | Texas Instruments | Texas Instruments | Texas Instruments |
| Output Voltage | 3.3 V (fixed) | Adjustable (1.4V-34V) | 5.0 V (fixed) | [DATA_NEEDED] | 1.8 V (fixed) |
| Maximum Output Current | 300 mA | 300 mA | 300 mA | [DATA_NEEDED] | 300 mA |
| Input Voltage (Max) | 40 V | 40 V | 40 V | 40 V | 40 V |
| Dropout Voltage (at 300mA) | 300 mV | 300 mV | 300 mV | [DATA_NEEDED] | 300 mV |
| Quiescent Current (typ) | 35 Β΅A | 35 Β΅A | 35 Β΅A | [DATA_NEEDED] | 35 Β΅A |
| Watchdog Timer | Yes | Yes | Yes | Yes | Yes |
| AEC-Q100 Qualification | Yes | Yes | Yes | Yes | Yes |
Key Differentiators
- Integrated programmable window watchdog (vs TPS7A6301QPWPRQ1)
- Fixed 3.3V output eliminates external components (vs TPS7A6301QPWPRQ1)
- Automotive off-battery capability (vs A generic LDO)
Design Notes
For a 40V input to 3.3V output at 300mA, the power dissipation is approximately 11W, which exceeds the HTSSOP-14 package's thermal capability without a heatsink. For such operating points, a thermal design evaluation is critical. Use a large copper pour under the exposed pad and consider reducing the input voltage with a pre-regulator to lower dissipation.
Place input and output capacitors as close to the IN and OUT pins as possible. Use a 1Β΅F to 10Β΅F ceramic capacitor on the input and a 1Β΅F to 10Β΅F ceramic capacitor on the output with low ESR, as specified in the datasheet. The exposed pad should be soldered to the ground plane for improved thermal performance.
Do not connect the watchdog output (WDO) to a high-impedance node without proper pull-up. The WDO is an open-drain output and requires an external pull-up resistor. Ensure the watchdog input (WDI) is toggled by the MCU within the programmed window to avoid false resets. Verify the enable threshold to prevent accidental shutdown during power sequencing.
Compliance Information
RoHS compliant and lead-free per digchips data. AEC-Q100 qualified per TI product page. REACH, halogen-free, and conflict minerals status not provided, so set to unknown.
